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An early Eocene carbon cycle perturbation at ~52.5 Ma in the Southern Alps: Chronology and biotic response
Author(s)
Language
English
Obiettivo Specifico
2.2. Laboratorio di paleomagnetismo
Status
Published
JCR Journal
JCR Journal
Peer review journal
Yes
Title of the book
Issue/vol(year)
/ 24 (2009)
Publisher
AGU
Pages (printed)
PA2209
Issued date
May 14, 2009
Abstract
At least two transient events of extreme global warming occurred superimposed on the long-term latest
Paleocene and early Eocene warming trend in the Paleocene-Eocene thermal maximum (PETM) (or ETM1
~55.5 Ma) and the Elmo (or ETM2 ~53.6 Ma). Other than warmth, the best known PETM is characterized by
(1) significant injection of 13C-depleted carbon into the ocean-atmosphere system, (2) deep-sea carbonate
dissolution, (3) strong biotic responses, and (4) perturbations of the hydrological cycle. Documentation of the
other documented and suspected "hyperthermals" is, as yet, insufficient to assess whether they are similar in
nature to the PETM. Here we present and discuss biomagnetostratigraphic data and geochemical records across
two lower Eocene successions deposited on a continental margin of the western Tethys: the Farra and Possagno
sections in the Venetian pre-Alps. We recognize four negative carbon isotope excursions within chron C24.
Three of these shifts correlate to known or suspected hyperthermals: the PETM, the Eocene thermal maximum 2
(~53.6 Ma), and the informally named "X event" (~52.5 Ma). The fourth excursion lies within a reverse
subchron and occurred between the latter two. In the Farra section, the X event is marked by a ~0.6% negative
carbon isotope excursion and carbonate dissolution. Furthermore, the event exhibits responses among calcareous
nannofossils, planktic foraminifera, and dinoflagellates that are similar to, though less intense than, those
observed across the PETM. Sedimentological and quantitative micropaleontological data from the Farra section
also suggest increased weathering and runoff as well as sea surface eutrophication during this event.
Paleocene and early Eocene warming trend in the Paleocene-Eocene thermal maximum (PETM) (or ETM1
~55.5 Ma) and the Elmo (or ETM2 ~53.6 Ma). Other than warmth, the best known PETM is characterized by
(1) significant injection of 13C-depleted carbon into the ocean-atmosphere system, (2) deep-sea carbonate
dissolution, (3) strong biotic responses, and (4) perturbations of the hydrological cycle. Documentation of the
other documented and suspected "hyperthermals" is, as yet, insufficient to assess whether they are similar in
nature to the PETM. Here we present and discuss biomagnetostratigraphic data and geochemical records across
two lower Eocene successions deposited on a continental margin of the western Tethys: the Farra and Possagno
sections in the Venetian pre-Alps. We recognize four negative carbon isotope excursions within chron C24.
Three of these shifts correlate to known or suspected hyperthermals: the PETM, the Eocene thermal maximum 2
(~53.6 Ma), and the informally named "X event" (~52.5 Ma). The fourth excursion lies within a reverse
subchron and occurred between the latter two. In the Farra section, the X event is marked by a ~0.6% negative
carbon isotope excursion and carbonate dissolution. Furthermore, the event exhibits responses among calcareous
nannofossils, planktic foraminifera, and dinoflagellates that are similar to, though less intense than, those
observed across the PETM. Sedimentological and quantitative micropaleontological data from the Farra section
also suggest increased weathering and runoff as well as sea surface eutrophication during this event.
References
Agnini, C., E. Fornaciari, L. Giusberti, J. Backman,
P. Grandesso, V. Luciani, D. Scardanzan, and
D. Rio (2006a), In search of early Eocene hyperthermals:
The Farra d’Alpago section
(Southern Alps, Italy), in Climate and Biota
of the Early Paleogene 2006, abstract volume,
edited by F. Caballero et al., p. 2, Croman,
Bilbao, Spain.
Agnini, C., G. Muttoni, D. V. Kent, and D. Rio
(2006b), Eocene biostratigraphy and magnetic
stratigraphy from Possagno, Italy: The calcareous
nannofossil response to climate variability,
Earth Planet. Sci. Lett., 241, 815–830,
doi:10.1016/j.epsl.2005.11.005.
Agnini, C., E. Fornaciari, D. Rio, F. Tateo,
J. Backman, and L. Giusberti (2007a), Responses
of calcareous nannofossil assemblages,
mineralogy and geochemistry to the
environmental perturbations across the
Paleocene/Eocene boundary in the Venetian
pre-Alps, Mar. Micropaleontol., 63, 19 – 38,
doi:10.1016/j.marmicro.2006.10.002.
Agnini, C., E. Fornaciari, I. Raffi, D. Rio,
U. Ro¨hl, and T. Westerhold (2007b), Highresolution
nannofossil biochronology of middle
Paleocene to early Eocene at ODP Site
1262: Implications for calcareous nannoplankton
evolution, Mar. Micropaleontol.,
64, 215 – 248, doi:10.1016/j.marmicro.
2007.05.003.
Alegret, L., E. Molina, and E. Thomas (2003),
Benthic foraminiferal turnover across the
Cretaceous/Paleogene boundary at Agost
(southeastern Spain): Paleoenvironmental inferences,
Mar. Micropaleontol., 48, 251–279,
doi:10.1016/S0377-8398(03)00022-7.
Arenillas, I., E. Molina, and B. Schmitz (1999),
Planktic foraminiferal and 13C isotopic changes
across the Paleocene/Eocene boundary at
Possagno (Italy), Int. J. Earth Sci., 88(2),
352–364, doi:10.1007/s005310050270.
Aubry,M.-P. (1984), Handbook of Cenozoic Calcareous
Nannoplankton, vol. 1, Ortholithae
(Discoaster), 263 pp., Micropaleontology,
Am. Mus. of Nat. Hist., New York.
Aubry,M.-P. (1988), Handbook of Cenozoic Calcareous
Nannoplankton, vol. 2, Ortholithae
(Holococcoliths, Ceratoliths, Ortholiths and
Other), 279 pp., Micropaleontology, Am.
Mus. of Nat. Hist., New York.
Aubry, M.-P. (1989), Handbook of Cenozoic
Calcareous Nannoplankton, vol. 3, Ortholithae
(Pentaliths and Others), Heliolithae
(Fasciculiths, Sphenoliths and Others),
279 pp., Micropaleontology, Am. Mus. of
Nat. Hist., New York.
Aubry, M.-P. (1990), Handbook of Cenozoic
Calcareous Nannoplankton, vol. 4, Heliolithae
(Helicoliths, Cribriliths, Lopadoliths
and Other), 381 pp., Micropaleontology,
Am. Mus. of Nat. Hist., New York.
Aubry, M.-P. (1998), Early Paleogene calcareous
nannoplankton evolution: A tale of climatic
amelioration, in Late Paleocene and Early
Eocene Climatic and Biotic Evolution, edited
by M.-P. Aubry et al., pp. 158–203, Columbia
Univ. Press, New York.
Aubry,M.-P. (1999), Handbook of Cenozoic Calcareous
Nannoplankton, vol. 5, Heliolithae
(Zygoliths and Rhabdoliths), 368 pp.,Micropaleontology,
Am. Mus. of Nat. Hist., New York.
Aubry, M.-P., K. Ouda, C. Dupuis, J. A. Van
Couvering, and the members of the Working
Group on the Paleocene/Eocene Boundary
(2002), Proposal: Global standard stratotypesection
and point (GSSP) at the Dababiya
section (Egypt), internal report, 58 pp., Int.
Subcomm. on Paleogene Stratigr., Trondheim,
Norway.
Backman, J., and N. J. Shackleton (1983), Quantitative
biochronology of Pliocene and early
Pleistocene calcareous nannoplankton from
the Atlantic, Indian and Pacific Oceans, Mar.
Micropaleontol., 8, 141 – 170, doi:10.1016/
0377-8398(83)90009-9.
Berggren, W. A., and P. N. Pearson (2005), A
revised tropical to subtropical Paleogene planktonic
foraminiferal zonation, J. Foraminiferal
Res., 35, 279– 298, doi:10.2113/35.4.279.
Berggren, W. A., D. V. Kent, C. C. Swisher III,
and M.-P. Aubry (1995), A revised Cenozoic
geochronology and chronostratigraphy, in
Geochronology, Time Scales, and Global
Stratigraphic Correlation, edited by W. A.
Berggren et al., Spec. Publ. SEPM Soc. Sediment.
Geol., vol. 54, pp. 129– 212.
Bignot, G. (1998), Middle Eocene benthic foraminifers
from holes 960A and 960C, central
Atlantic Ocean, Proc. Ocean Drill. Program
Initial Rep., 208, 433– 444.
Boersma, A., N. J. Shackleton, M. Hall, and
Q. Given (1979), Carbon and oxygen isotope
records at DSDP Site 384 (North Atlantic) and
some Paleocene paleotemperatures and carbon
isotope variations in the Atlantic Ocean, Initial
Rep. Deep Sea Drill. Proj., 43, 695– 717.
Boersma, A., I. P. Silva, and N. J. Shackleton
(1987), Atlantic Eocene planktonic foraminiferal
paleohydrographic indicators and stable
isotope paleoceanography, Paleoceanography,
2, 287– 331, doi:10.1029/PA002i003p00287.
Bolli, H. M., (1975), Monografia Micropaleontologica
sul Paleocene e l’Eocene di Possagno,
Provincia di Treviso, Italia, Schweiz. Palaeontol.
Abh., 97, 222 pp.
Bowen, G. J., et al. (2006), Eocene hyperthermal
event offers insight into greenhouse warming,
Eos Trans. AGU, 87(17), doi:10.1029/
2006EO170002.
Bowles, J. (2006), Data report: Revised magnetostratigraphy
and magnetic mineralogy of sediments
from Walvis Ridge, Leg 208, Proc.
Ocean Drill. Program Sci. Results, 208, 1–
24.
Bralower, T. J. (2002), Evidence of surface
water oligotrophy during the Paleocene-
Eocene thermal maximum: Nannofossil assemblage
data from Ocean Drilling Program Site
690, Maud Rise,Weddell Sea, Paleoceanography,
17(2), 1023, doi:10.1029/2001PA000662.
Bralower, T. J., J. C. Zachos, E. Thomas, M.
Parrow, C. K. Paull, D. C. Kelly, I. P. Silva,
W. V. Sliter, and K. C. Lohmann (1995), Late
Paleocene to Eocene paleoceanography of the
equatorial Pacific Ocean: Stable isotopes recorded
at Ocean Drilling Program Site 865,
Allison Guyot, Paleoceanography, 10, 841–
865, doi:10.1029/95PA01143.
Bralower, T. J., et al. (2002), Proceedings of the
Ocean Drilling Program Initial Reports,
vol. 198, doi:10.2973/odp.proc.ir.198.2002,
Ocean Drill. Program, College Station, Tex.
Bujak, J. P., and H. Brinkhuis (1998), Global
warming and dinocyst changes across the
Paleocene/Eocene epoch boundary, in Late
Paleocene– Early Eocene Biotic and Climatic
Events in the Marine and Terrestrial Records,
edited by M.-P. Aubry et al., pp. 277 – 295,
Columbia Univ. Press, New York.
Cande, S. C., and D. V. Kent (1995), Revised
calibration of the geomagnetic polarity timescale
for the Late Cretaceous and Cenozoic,
J. Geophys. Res., 100(B4), 6093 – 6096,
doi:10.1029/94JB03098.
Cati, A., D. Sartorio, and S. Venturini (1989),
Carbonate platforms in the subsurface of the
northern Adriatic area, Mem. Soc. Geol. Ital.,
40, 295– 308.
Coccioni,R., E. Angori, R. Catanzariti, L. Giusberti,
E. Guasti, V. Luciani, A. Marsili, S. Monechi,
M. Sprovieri, and F. Tateo (2006), The early
Paleogene hyperthermal events (EPHES): New insights from the classical tethyan Contessa
Road section (Gubbio, Italy), in Climate
and Biota of the Early Paleogene 2006, abstract
volume, edited by F. Caballero et al., p. 27,
Croman, Bilbao, Spain.
Cramer, B. S., J. D.Wright, D. V. Kent, and M.-P.
Aubry (2003), Orbital climate forcing of d13C
excursions in the late Paleocene– early Eocene
(chrons C24n –C25n), Paleoceanography,
18(4), 1097, doi:10.1029/2003PA000909.
Crouch, E.M.,C.Heilmann-Clausen,H.Brinkhuis,
H. E. G. Morgans, K. M. Rogers, H. Egger, and
B. Schmitz (2001), Global dinoflagellate event
associated with the late Paleocene thermal maximum,
Geology, 29(4), 315– 318, doi:10.1130/
0091-7613(2001)029<0315:GDEAWT>2.0.
CO;2.
Crouch, E. M., G. R. Dickens, H. Brinkhuis,
M.-P. Aubry, G. J. Hollis, K. M. Rogers, and
H. Visscher (2003), The Apectodinium acme
and terrestrial discharge during the Paleocene-
Eocene thermal maximum: New palynological,
geochemical and calcareous nannoplankton
observations at Tawanui, New Zealand, Palaeogeogr.
Palaeoclimatol. Palaeoecol., 194,
3 8 7 – 4 0 3 , d o i : 1 0 . 1 0 1 6 / S 0 0 3 1 -
0182(03)00334-1.
Denman, K. L., et al. (2007), Couplings between
changes in the climate system and biogeochemistry,
in Climate Change 2007: The Physical
Science Basis: Working Group I Contribution
to the Fourth Assessment Report of the IPCC,
edited by S. Solomon et al., pp. 499–588, Cambridge
Univ. Press, New York.
Dickens, G. R., J. R. O’Neil, D. K. Rea, and
R. M. Owen (1995), Dissociation of oceanic
methane hydrate as a cause of the carbon isotope
excursion at the end of the Paleocene,
P a l e o c e a no g raphy, 10, 965 – 971,
doi:10.1029/95PA02087.
Dickens, G. R., M. M. Castillo, and J. C. G.
Walker (1997), A blast of gas in the latest
Paleocene: Simulating first-order effects of
massive dissociation of oceanic methane hydrate,
Geology, 25(3), 259– 262, doi:10.1130/
0091-7613(1997)025<0259:ABOGIT>2.3.
CO;2.
Douglas, R. G., and S. M. Savin (1978), Oxygen
isotopic evidence for the depth stratification of
Tertiary and Cretaceous planktic foraminifera,
Mar. Micropaleontol . , 3, 175 – 196,
doi:10.1016/0377-8398(78)90004-X.
Fensome, R. A., and G. L. Williams (2004), The
Lentin and Williams Index of Fossil Dinoflagellates:
2004 Edition, Contrib. Ser., vol. 42,
909 pp., Am. Assoc. of Stratigr. Palynol.,
Pittsburgh, Pa.
Fisher, R. (1953), Dispersion on a sphere, Proc.
R. Soc. London, Ser. A, 217, 295 – 305,
doi:10.1098/rspa.1953.0064.
Gibbs, S. J., N. J. Shackleton, and J. R. Young
(2004), Orbitally forced climate signals in
mid-Pliocene nannofossil assemblages, Mar.
Micropaleontol., 51, 39 – 56, doi:10.1016/
j.marmicro.2003.09.002.
Gibbs, S. J., T. J. Bralower, P. R. Bown, J. C.
Zachos, and L. M. Bybell (2006), Shelf and
open-ocean calcareous phytoplankton assemblages
across the Paleocene– Eocene thermal
maximum: Implications for global productivity
gradients, Geology, 34(4), 233 – 236,
doi:10.1130/G22381.1.
Giusberti, L., D. Rio, C. Agnini, J. Backman,
E. Fornaciari, F. Tateo, and M. Oddone (2007),
Mode and tempo of the Paleocene Eocene thermal
maximum in an expanded section from the
Venetian pre-Alps, Geol. Soc. Am. Bull., 119,
391–412, doi:10.1130/B25994.1.
Hancock, H. J. L., and G. R. Dickens (2005),
Carbonate dissolution episodes in Paleocene
and Eocene sediment, Shatsky Rise,west-central
Pacific [online], Proc. Ocean Drill. Program
Sci. Results, 198, 24 pp. (Available at http://
www-odp.tamu.edu/publications/198_SR/116/
116.htm)
Haq, B. U., and G. P. Lohmann (1976), Early
Cenozoic calcareous nannoplankton biogeography
of theAtlanticOcean,Mar. Micropaleontol.,
1, 119–194, doi:10.1016/0377-8398(76)90008-6.
Hollis, C. J., G. R. Dickens, B. D. Field, C. M.
Jones, and C. P. Strong (2005), The Paleocene-
Eocene transition at Mead Stream, New
Zealand: A southern Pacific record of early
Cenozoic global change, Palaeogeogr. Palaeoclimatol.
Palaeoecol., 215, 313 – 343,
doi:10.1016/j.palaeo.2004.09.011.
Istituto Nazionale di Geofisica e Vulcanologia
(2007), Italian magnetic network and geomagnetic
field maps of Italy at year 2005.0, Boll.
Geod. Sci. Affini., 65, 1 – 47.
Jansen, E., et al. (2007), Palaeoclimate, in Climate
Change 2007: The Physical Science Basis:
Working Group I Contribution to the
Fourth Assessment Report of the IPCC, edited
by S. Solomon et al., pp. 435– 498, Cambridge
Univ. Press, New York.
Kaminski, M. A., and F. M. Gradstein (2005),
Atlas of Paleogene Cosmopolitan Deep-Water
Agglutinated Foraminifera, Spec. Publ., vol.
10, 548 pp., Grzybowski Found., Krakow,
Poland.
Kelly, D. C., T. J. Bralower, J. C. Zachos,
I. Premoli Silva, and E. Thomas (1996), Rapid
diversification of planktonic foraminifera in the
tropical Pacific (ODP Site 865) during the late
Paleocene thermal maximum, Geology, 24(5),
423 – 426, doi:10.1130/0091-7613(1996)024<
0423:RDOPFI>2.3.CO;2.
Kennett, J. P., and L. D. Stott (1991), Abrupt
deep-sea warming, palaeoceanographic
changes and benthic extinctions at the end of
the Palaeocene, Nature, 353, 225 – 229,
doi:10.1038/353225a0.
Kirschvink, J. L. (1980), The least squares line
and plane and the analysis of paleomagnetic
data, Geophys. J. R. Astron. Soc., 62, 699–
718.
Kleypas, J.A., R. A.Feely, V. J.Fabry,C.Langdon,
C. L. Sabine, and L. L. Robbins (2006), Impacts
of ocean acidification on coral reefs and
other marine calcifiers: A guide for future research,
report, 88 pp., NSF, Arlington, Va.
Lirer, F. (2000), A new technique for retrieving
calcareous microfossils from lithified lime deposits,
Micropaleontology, 46, 365– 369.
Lourens, L. J., A. Sluijs, D. Kroon, J. C. Zachos,
E. Thomas, U. Ro¨hl, J. Bowles, and I. Raffi
(2005), Astronomical pacing of late Palaeocene
to early Eocene global warming events, Nature,
435, 1083– 1087, doi:10.1038/nature03814.
Lu, G., and G. Keller (1996), Separating ecological
assemblages using stable isotope signals:
Late Paleocene to early Eocene planktic foraminifera,
DSDP Site 577, J. Foraminiferal
Res., 26, 103– 112.
Luciani, V., L. Giusberti, C. Agnini, J. Backman,
E. Fornaciari, andD. Rio (2007), The Paleocene-
Eocene thermal maximum as recorded by
Tethyan planktonic foraminifera in the Forada
section (northern Italy), Mar. Micropaleontol.,
64, 189 – 214, doi:10.1016/j.marmicro.
2007.05.001.
Mantovani, F., M. Panizza, E. Semenza, and
S. Piacente (1978), L’Alpago (Prealpi bellunesi):
Geologia, geomorfologia, nivopluvimetria, Boll.
Soc. Geol. Ital., 95, 1589–1656.
Martini, E. (1971), Standard Tertiary and Quaternary
calcareous nannoplankton zonation, in
Proceedings of the 2nd Planktonic Conference,
edited by A. Farinacci, vol. 2, pp.
739– 785, Tecnoscienza, Rome.
Molina, E., C. Gonzalvo, M. A. Manchen˜o,
S. Ortiz, B. Schmitz, E. Thomas, and K. von
Salis (2006), Integrated stratigraphy and chronostratigraphy
across the Ypresian-Lutetian
transition in the Fortuna Section (Betic Cordillera,
Spain), Newsl. Stratigr., 42(1), 1 – 19,
doi:10.1127/0078-0421/2006/0042-0001.
Monechi, S., E. Angori, and K. von Salis (2000),
Calcareous nannofossil turnover around the
Paleocene/Eocene transition at Alamedilla
(southern Spain), Bull. Soc. Geol. Fr.,
171(4), 477– 489, doi:10.2113/171.4.477.
Nicolo, M. J., G. R. Dickens, C. J. Hollis, and
J. C. Zachos (2007), Multiple early Eocene
hyperthermals: Their sedimentary expression
on the New Zealand continental margin and
in the deep sea, Geology, 35(8), 699 – 702,
doi:10.1130/G23648A.1.
Nomura, R., and H. Takata (2005), Data report:
Paleocene/Eocene benthic foraminifers, ODP
Leg 199 Sites 1215, 1220, and 1221, equatorial
central Pacific Ocean [online], Proc. Ocean
Drill. Program Sci. Results, 199, 34 pp.
(Available at http://www-odp.tamu.edu/
publications/199_SR/223/223.htm)
Ortiz, S., and E. Thomas (2006), Lower-middle
Eocene benthic foraminifera from the Fortuna
Section (Betic Cordillera, southeastern Spain),
Micropaleontology, 52, 97– 150, doi:10.2113/
gsmicropal.52.2.97.
Pagani,M., N. Pedentchouk, M. Huber, A. Sluijs,
S. Schouten, H. Brinkhuis, J. S. Sinninghe
Damste, G. R. Dickens, and the IODP Expedition
302 Scientists (2006), Arctic hydrology
during global warming at the Palaeocene/
Eocene thermal maximum, Nature, 442,
671– 675, doi:10.1038/nature05043.
Pearson, P. N., R. K. Olsson, B. T. Huber, C.
Hemleben, and W. A. Berggren (2006), Atlas
of Eocene Planktonic Foraminiferas, Spec.
Publ. Cushman Found. Foraminiferal Res.,
41, 514 pp.
Perch-Nielsen, K. (1985), Cenozoic calcareous
nannofossils, in Plankton Stratigraphy, edited
by H. M. Bolli et al., pp. 427– 554, Cambridge
Univ. Press, New York.
Pross, J., and H. Brinkhuis (2005), Organicwalled
dinoflagellate cysts as paleoenvironmental
indicators in the Paleogene: A synopsis
of concepts, Palaeontol. Z., 79, 53– 59.
Quille´ve´re´, F., and R. D. Norris (2003), Ecological
development of acarininids (planktonic
foraminifera) and hydrographic evolution of
Paleocene surface waters, in Causes and Consequences
of Globally Warm Climates in the
Early Paleogene, edited by S. L. Wing et al.,
Spec. Pap. Geol. Soc. Am., vol. 369, pp. 223–
238.
Quille´ve´re´, F., R. D. Norris, I. Moussa, andW. A.
Berggren (2001), Role of photosymbiosis and
biogeography in the diversification of early Paleogene
acarininids (planktonic foraminifera),
Paleobiology, 27, 311 – 326, doi:10.1666/
0094-8373(2001)027<0311:ROPABI>2.0.
CO;2.
Quille´ve´re´, F., R. D. Norris, D. Kroon, and P. A.
Wilson (2008), Transient ocean warming and
shift in carbon reservoir during the early Danian,
Earth Planet. Sci. Lett., 265, 600– 615,
doi:10.1016/j.epsl.2007.10.040.
Raven, J., K. Caldeira, H. Elderfield, O. Hoegh-
Guldberg, P. Liss, U. Riebesell, J. Shepherd,
C. Turley, and A. Watson (2005), Ocean acidification due to increasing atmospheric carbon
dioxide, Policy Doc. 12/05, 60 pp., R. Soc.,
London.
Ravizza, G., R. N. Norris, J. Blusztajn, and M.-P.
Aubry (2001), An osmium isotope excursion
associated with the late Paleocene thermal
maximum: Evidence of intensified chemical
weathering, Paleoceanography, 16, 155–163,
doi:10.1029/2000PA000541.
Ro¨hl, U., J. C. Zachos, E. Thomas, D. C. Kelly,
B. Donner, and T. Westerhold (2004), Multiple
early Eocene thermal maximums, Eos
Trans. AGU, 85(47), Fall Meet. Suppl., Abstract
PP14A-02.
Ro¨hl, U., T. Westerhold, S. Monechi, E. Thomas,
J. C. Zachos, and B. Donner (2005),
The third and final early Eocene thermal maximum:
Characteristics, timing, and mechanisms
of the ‘‘X’’ event, Geol. Soc. Am.
Abstr. Programs, 37(7), 264.
Schmitz, B., and V. Pujalte (2007), Abrupt increase
in seasonal extreme precipitation at the
Paleocene-Eocene boundary, Geology, 35(3),
215–218, doi:10.1130/G23261A.1.
Schmitz, B., F. Asaro, E. Molina, S. Monechi,
K. von Salis, and R. P. Speijer (1997), Highresolution
iridium, d13C, d180, foraminifera
and nannofossil profiles across the latest Paleocene
benthic extinction event at Zumaya,
Spain, Palaeogeogr. Palaeoclimatol. Palaeoecol.,
133, 49 – 68, doi:10.1016/S0031-
0182(97)00024-2.
Schmitz, B., V. Pujalte, and K. Nu´n˜ez-Betelu
(2001), Climate and sea-level perturbations
during the incipient Eocene thermal maximum:
Evidence from siliciclastic units in the
Basque Basin (Ermua, Zumaia and Trabakua
Pass), northern Spain, Palaeogeogr. Palaeoclimatol.
Palaeoecol., 165, 299 – 320,
doi:10.1016/S0031-0182(00)00167-X.
Schouten, S., M. Woltering, W. I. C. Rijpstra, A.
Sluijs, H. Brinkhuis, and J. S. Sinninghe
Damste´ (2007), The Paleocene-Eocene carbon
isotope excursion in higher plant organic matter:
Differential fractionation of angiosperms
and conifers in the Arctic, Earth Planet. Sci.
Lett., 258, 581 – 592, doi:10.1016/j.epsl.
2007.04.024.
Shackleton, N. J., R. M. Corfield, and M. A.
Hall (1985), Stable isotope data and the ontogeny
of Paleocene planktonic foraminifera,
J. Foraminiferal Res., 15, 321– 337.
Sluijs, A., H. Brinkhuis, C. E. Stickley, J.Warnaar,
G. L. Williams, and M. Fuller (2003), Dinoflagellate
cysts from the Eocene-Oligocene
transition in the Southern Ocean: Results from
ODP Leg 189 [online], Proc. Ocean Drill.
Program Sci. Results, 189, 42 pp. (Available
at http://www-odp.tamu.edu/publications/
189_SR/VOLUME/CHAPTERS/104.PDF)
Sluijs, A., J. Pross, and H. Brinkhuis (2005),
From greenhouse to icehouse: Organic-walled
dinoflagellate cysts as paleoenvironmental indicators
in the Paleogene, Earth Sci. Rev., 68,
281 – 315, doi:10.1016/j.earscirev.2004.
06.001.
Sluijs,A., G. J. Bowen, H. Brinkhuis, L. J. Lourens,
and E. Thomas (2007a), The Palaeocene-
Eocene thermal maximum super greenhouse:
Biotic and geochemical signatures, age models
and mechanisms of global change, in Deep
Time Perspectives on Climate Change: Marrying
the Signal From Computer Models and
Biological Proxies, Micropaleontol. Soc. Spec.
Publ., vol. 2, edited by M. Williams et al.,
pp. 323–349, Geol. Soc., London.
Sluijs, A., H. Brinkhuis, S. Schouten, J. C.
Zachos, C.M. John, S. Bohaty, J. S. Sinninghe
Damste´, and E. M. Crouch (2007b), Environmental
precursors to light carbon input at the
Paleocene/Eocene boundary, Nature, 450,
1218–1221, doi:10.1038/nature06400.
Sluijs, A., U. Ro¨hl, S. Schouten, H.-J. Brumsack,
F. Sangiorgi, J. S. Sinninghe Damste´, and
H. Brinkhuis (2008a), Arctic late Paleocene–
early Eocene paleoenvironments with special
emphasis on the Paleocene-Eocene thermal
maximum (Lomonosov Ridge, Integrated
Ocean Drilling Program Expedition 302), Paleoceanography,
23, PA1S11, doi:10.1029/
2007PA001495.
Sluijs, A., et al. (2008b), Eustatic variations during
the Paleocene-Eocene greenhouse world,
Paleoceanography, 23, PA4216, doi:10.1029/
2008PA001615.
Speijer, R. P., and B. Schmitz (1998), A benthic
foraminiferal record of Paleocene sea level
and trophic/redox conditions at Gebel Aweina,
Egypt, Palaeogeogr. Palaeoclimatol. Palaeoecol.,
137, 79 – 101, doi:10.1016/S0031-
0182(97)00107-7.
Stap, L., A. Sluijs, E. Thomas, and L. J. Lourens
(2009), Patterns and magnitude of deep sea
carbonate dissolution during Eocene thermal
maximum 2 and H2, Walvis Ridge, southeastern
Atlantic Ocean, Paleoceanography, 24,
PA1211, doi:10.1029/2008PA001655.
Sztra´kos, K. (2005), Les foraminife`res du Pale´oce`ne
et de l’E´ oce`ne basal du sillon nord-pyre´ne´en
(Aquitaine, France), Rev. Micropaleontol., 48,
175–236, doi:10.1016/j.revmic.2005.06.001.
Thierstein, H. R., K. R. Geitzenauer, B. Molfino,
and N. J. Shackleton (1977), Global synchroneity
of late Quaternary coccolith datum levels
validation by oxygen isotopes, Geology, 5(7),
400–404, doi:10.1130/0091-7613(1977)5<400:
GSOLQC>2.0.CO;2.
Thomas, E. (1998), The biogeography of the late
Paleocene benthic foraminiferal extinction, in
Late Paleocene– Early Eocene Biotic and Climatic
Events in the Marine and Terrestrial
Records, edited by M.-P. Aubry, S. G. Lucas,
and W. A. Berggren, pp. 214–243, Columbia
Univ. Press, New York.
Thomas, E. (2005), Benthic foraminifera and
early Eocene hyperthermal events (SE Atlantic
Ocean), Geol. Soc. Am. Abstr. Programs,
37(7), 413.
Thomas, E. (2007), Cenozoic mass extinctions
in the deep sea:What disturbs the largest habitat
on Earth?, in Large Ecosystem Perturbations:
Causes and Consequences, edited by S. Monechi,
R. Coccioni, and M. R. Rampino, Spec.
Pap. Geol. Soc. Am., vol. 424, pp. 1–23.
Thomas, E., and N. J. Shackleton (1996), The
Palaeocene-Eocene benthic foraminiferal extinction
and stable isotope anomalies, in Correlation
of the Early Paleogene in Northwest
Europe, edited by R. W. O. B. Knox, R. M.
Corfield, and R. E. Dunay, Geol. Soc. Spec.
Publ., vol. 101, pp. 401– 441.
Thomas, E., and J. C. Zachos (2000), Was the
late Paleocene thermal maximum a unique
event?, GFF, 122, 169– 170.
Thomas, E., J. C. Zachos, and T. J. Bralower
(2000), Deep sea environments on a warm
Earth: Latest Paleocene – early Eocene, in
Warm Climates in Earth History, edited by
B. T. Huber, K. G. MacLeod, and S. L. Wing,
pp. 132– 160, Cambridge Univ. Press, Cambridge,
U. K.
Thomas, E., U. Ro¨hl, S. Monechi, T.Westerhold,
B. Balestra, and G. Morelli (2006), An early
Eocene hyperthermal event at 52.5 Ma, in
Climate and Biota of the Early Paleogene
2006, abstract volume, edited by F. Caballero
et al., p. 136, Croman, Bilbao, Spain.
Van Morkhoven, F. P. C. M., W. A. Berggren,
and A. S. Edwards (1986), Cenozoic Cosmopolitan
Deep-Water Benthic Foraminifera,
Bull. Cent. Rech. Explor. Prod. Elf Aquitaine,
vol. 11, 421 pp.
Wei, W., and S. W. Wise Jr. (1990), Biogeographic
gradients of middle Eocene-Oligocene
calcareous nannoplankton in the South Atlantic
Ocean, Palaeogeogr. Palaeoclimatol.
Palaeoecol., 79, 29 – 61, doi:10.1016/0031-
0182(90)90104-F.
Westerhold, T., U. Ro¨hl, J. Laskar, I. Raffi, J.
Bowles, L. J. Lourens, and J. C. Zachos
(2007), On the duration of magnetochrons
C24r and C25n and the timing of early Eocene
global warming events: Implications from the
Ocean Drilling Program Leg 208 Walvis
Ridge depth transect, Paleoceanography, 22,
PA2201, doi:10.1029/2006PA001322.
Zachos, J. C., M. Pagani, L. C. Sloan, K. Billups,
and E. Thomas (2001), Trends, rhythms, and
aberrations in global climate 65 Ma to present,
Science, 292, 686 – 693, doi:10.1126/
science.1059412.
Zachos, J. C., et al. (2004), Proceedings of the
Ocean Drilling Program Initial Reports,
vol. 208, Early Cenozoic Extreme Climates:
The Walvis Ridge Transect, doi:10.2973/odp.
proc.ir.208.2004, Ocean Drill. Program, College
Station, Tex.
Zachos, J. C., et al. (2005), Rapid acidification
of the ocean during the Paleocene-Eocene
thermal maximum, Science, 308, 1611 –
1615, doi:10.1126/science.1109004.
Zachos, J.C., S. Schouten, S. Bohaty,T.Quattlebaum,
A. Sluijs, H. Brinkhuis, S. J. Gibbs, and T. J.
Bralower (2006), Extreme warming of midlatitude
coastal ocean during the Paleocene-
Eocene thermal maximum: Inferences from
TEX86 and isotope data, Geology, 34(9),
737 – 740, doi:10.1130/G22522.1.
Zijderveld, J. D. A. (1967), AC demagnetization
of rocks: Analysis of results, in Methods in
Palaeomagnetism, edited by S. K. Runcorn,
K. M. Creer, and D. W. Collinson, pp. 254–
286, Elsevier, New York.
P. Grandesso, V. Luciani, D. Scardanzan, and
D. Rio (2006a), In search of early Eocene hyperthermals:
The Farra d’Alpago section
(Southern Alps, Italy), in Climate and Biota
of the Early Paleogene 2006, abstract volume,
edited by F. Caballero et al., p. 2, Croman,
Bilbao, Spain.
Agnini, C., G. Muttoni, D. V. Kent, and D. Rio
(2006b), Eocene biostratigraphy and magnetic
stratigraphy from Possagno, Italy: The calcareous
nannofossil response to climate variability,
Earth Planet. Sci. Lett., 241, 815–830,
doi:10.1016/j.epsl.2005.11.005.
Agnini, C., E. Fornaciari, D. Rio, F. Tateo,
J. Backman, and L. Giusberti (2007a), Responses
of calcareous nannofossil assemblages,
mineralogy and geochemistry to the
environmental perturbations across the
Paleocene/Eocene boundary in the Venetian
pre-Alps, Mar. Micropaleontol., 63, 19 – 38,
doi:10.1016/j.marmicro.2006.10.002.
Agnini, C., E. Fornaciari, I. Raffi, D. Rio,
U. Ro¨hl, and T. Westerhold (2007b), Highresolution
nannofossil biochronology of middle
Paleocene to early Eocene at ODP Site
1262: Implications for calcareous nannoplankton
evolution, Mar. Micropaleontol.,
64, 215 – 248, doi:10.1016/j.marmicro.
2007.05.003.
Alegret, L., E. Molina, and E. Thomas (2003),
Benthic foraminiferal turnover across the
Cretaceous/Paleogene boundary at Agost
(southeastern Spain): Paleoenvironmental inferences,
Mar. Micropaleontol., 48, 251–279,
doi:10.1016/S0377-8398(03)00022-7.
Arenillas, I., E. Molina, and B. Schmitz (1999),
Planktic foraminiferal and 13C isotopic changes
across the Paleocene/Eocene boundary at
Possagno (Italy), Int. J. Earth Sci., 88(2),
352–364, doi:10.1007/s005310050270.
Aubry,M.-P. (1984), Handbook of Cenozoic Calcareous
Nannoplankton, vol. 1, Ortholithae
(Discoaster), 263 pp., Micropaleontology,
Am. Mus. of Nat. Hist., New York.
Aubry,M.-P. (1988), Handbook of Cenozoic Calcareous
Nannoplankton, vol. 2, Ortholithae
(Holococcoliths, Ceratoliths, Ortholiths and
Other), 279 pp., Micropaleontology, Am.
Mus. of Nat. Hist., New York.
Aubry, M.-P. (1989), Handbook of Cenozoic
Calcareous Nannoplankton, vol. 3, Ortholithae
(Pentaliths and Others), Heliolithae
(Fasciculiths, Sphenoliths and Others),
279 pp., Micropaleontology, Am. Mus. of
Nat. Hist., New York.
Aubry, M.-P. (1990), Handbook of Cenozoic
Calcareous Nannoplankton, vol. 4, Heliolithae
(Helicoliths, Cribriliths, Lopadoliths
and Other), 381 pp., Micropaleontology,
Am. Mus. of Nat. Hist., New York.
Aubry, M.-P. (1998), Early Paleogene calcareous
nannoplankton evolution: A tale of climatic
amelioration, in Late Paleocene and Early
Eocene Climatic and Biotic Evolution, edited
by M.-P. Aubry et al., pp. 158–203, Columbia
Univ. Press, New York.
Aubry,M.-P. (1999), Handbook of Cenozoic Calcareous
Nannoplankton, vol. 5, Heliolithae
(Zygoliths and Rhabdoliths), 368 pp.,Micropaleontology,
Am. Mus. of Nat. Hist., New York.
Aubry, M.-P., K. Ouda, C. Dupuis, J. A. Van
Couvering, and the members of the Working
Group on the Paleocene/Eocene Boundary
(2002), Proposal: Global standard stratotypesection
and point (GSSP) at the Dababiya
section (Egypt), internal report, 58 pp., Int.
Subcomm. on Paleogene Stratigr., Trondheim,
Norway.
Backman, J., and N. J. Shackleton (1983), Quantitative
biochronology of Pliocene and early
Pleistocene calcareous nannoplankton from
the Atlantic, Indian and Pacific Oceans, Mar.
Micropaleontol., 8, 141 – 170, doi:10.1016/
0377-8398(83)90009-9.
Berggren, W. A., and P. N. Pearson (2005), A
revised tropical to subtropical Paleogene planktonic
foraminiferal zonation, J. Foraminiferal
Res., 35, 279– 298, doi:10.2113/35.4.279.
Berggren, W. A., D. V. Kent, C. C. Swisher III,
and M.-P. Aubry (1995), A revised Cenozoic
geochronology and chronostratigraphy, in
Geochronology, Time Scales, and Global
Stratigraphic Correlation, edited by W. A.
Berggren et al., Spec. Publ. SEPM Soc. Sediment.
Geol., vol. 54, pp. 129– 212.
Bignot, G. (1998), Middle Eocene benthic foraminifers
from holes 960A and 960C, central
Atlantic Ocean, Proc. Ocean Drill. Program
Initial Rep., 208, 433– 444.
Boersma, A., N. J. Shackleton, M. Hall, and
Q. Given (1979), Carbon and oxygen isotope
records at DSDP Site 384 (North Atlantic) and
some Paleocene paleotemperatures and carbon
isotope variations in the Atlantic Ocean, Initial
Rep. Deep Sea Drill. Proj., 43, 695– 717.
Boersma, A., I. P. Silva, and N. J. Shackleton
(1987), Atlantic Eocene planktonic foraminiferal
paleohydrographic indicators and stable
isotope paleoceanography, Paleoceanography,
2, 287– 331, doi:10.1029/PA002i003p00287.
Bolli, H. M., (1975), Monografia Micropaleontologica
sul Paleocene e l’Eocene di Possagno,
Provincia di Treviso, Italia, Schweiz. Palaeontol.
Abh., 97, 222 pp.
Bowen, G. J., et al. (2006), Eocene hyperthermal
event offers insight into greenhouse warming,
Eos Trans. AGU, 87(17), doi:10.1029/
2006EO170002.
Bowles, J. (2006), Data report: Revised magnetostratigraphy
and magnetic mineralogy of sediments
from Walvis Ridge, Leg 208, Proc.
Ocean Drill. Program Sci. Results, 208, 1–
24.
Bralower, T. J. (2002), Evidence of surface
water oligotrophy during the Paleocene-
Eocene thermal maximum: Nannofossil assemblage
data from Ocean Drilling Program Site
690, Maud Rise,Weddell Sea, Paleoceanography,
17(2), 1023, doi:10.1029/2001PA000662.
Bralower, T. J., J. C. Zachos, E. Thomas, M.
Parrow, C. K. Paull, D. C. Kelly, I. P. Silva,
W. V. Sliter, and K. C. Lohmann (1995), Late
Paleocene to Eocene paleoceanography of the
equatorial Pacific Ocean: Stable isotopes recorded
at Ocean Drilling Program Site 865,
Allison Guyot, Paleoceanography, 10, 841–
865, doi:10.1029/95PA01143.
Bralower, T. J., et al. (2002), Proceedings of the
Ocean Drilling Program Initial Reports,
vol. 198, doi:10.2973/odp.proc.ir.198.2002,
Ocean Drill. Program, College Station, Tex.
Bujak, J. P., and H. Brinkhuis (1998), Global
warming and dinocyst changes across the
Paleocene/Eocene epoch boundary, in Late
Paleocene– Early Eocene Biotic and Climatic
Events in the Marine and Terrestrial Records,
edited by M.-P. Aubry et al., pp. 277 – 295,
Columbia Univ. Press, New York.
Cande, S. C., and D. V. Kent (1995), Revised
calibration of the geomagnetic polarity timescale
for the Late Cretaceous and Cenozoic,
J. Geophys. Res., 100(B4), 6093 – 6096,
doi:10.1029/94JB03098.
Cati, A., D. Sartorio, and S. Venturini (1989),
Carbonate platforms in the subsurface of the
northern Adriatic area, Mem. Soc. Geol. Ital.,
40, 295– 308.
Coccioni,R., E. Angori, R. Catanzariti, L. Giusberti,
E. Guasti, V. Luciani, A. Marsili, S. Monechi,
M. Sprovieri, and F. Tateo (2006), The early
Paleogene hyperthermal events (EPHES): New insights from the classical tethyan Contessa
Road section (Gubbio, Italy), in Climate
and Biota of the Early Paleogene 2006, abstract
volume, edited by F. Caballero et al., p. 27,
Croman, Bilbao, Spain.
Cramer, B. S., J. D.Wright, D. V. Kent, and M.-P.
Aubry (2003), Orbital climate forcing of d13C
excursions in the late Paleocene– early Eocene
(chrons C24n –C25n), Paleoceanography,
18(4), 1097, doi:10.1029/2003PA000909.
Crouch, E.M.,C.Heilmann-Clausen,H.Brinkhuis,
H. E. G. Morgans, K. M. Rogers, H. Egger, and
B. Schmitz (2001), Global dinoflagellate event
associated with the late Paleocene thermal maximum,
Geology, 29(4), 315– 318, doi:10.1130/
0091-7613(2001)029<0315:GDEAWT>2.0.
CO;2.
Crouch, E. M., G. R. Dickens, H. Brinkhuis,
M.-P. Aubry, G. J. Hollis, K. M. Rogers, and
H. Visscher (2003), The Apectodinium acme
and terrestrial discharge during the Paleocene-
Eocene thermal maximum: New palynological,
geochemical and calcareous nannoplankton
observations at Tawanui, New Zealand, Palaeogeogr.
Palaeoclimatol. Palaeoecol., 194,
3 8 7 – 4 0 3 , d o i : 1 0 . 1 0 1 6 / S 0 0 3 1 -
0182(03)00334-1.
Denman, K. L., et al. (2007), Couplings between
changes in the climate system and biogeochemistry,
in Climate Change 2007: The Physical
Science Basis: Working Group I Contribution
to the Fourth Assessment Report of the IPCC,
edited by S. Solomon et al., pp. 499–588, Cambridge
Univ. Press, New York.
Dickens, G. R., J. R. O’Neil, D. K. Rea, and
R. M. Owen (1995), Dissociation of oceanic
methane hydrate as a cause of the carbon isotope
excursion at the end of the Paleocene,
P a l e o c e a no g raphy, 10, 965 – 971,
doi:10.1029/95PA02087.
Dickens, G. R., M. M. Castillo, and J. C. G.
Walker (1997), A blast of gas in the latest
Paleocene: Simulating first-order effects of
massive dissociation of oceanic methane hydrate,
Geology, 25(3), 259– 262, doi:10.1130/
0091-7613(1997)025<0259:ABOGIT>2.3.
CO;2.
Douglas, R. G., and S. M. Savin (1978), Oxygen
isotopic evidence for the depth stratification of
Tertiary and Cretaceous planktic foraminifera,
Mar. Micropaleontol . , 3, 175 – 196,
doi:10.1016/0377-8398(78)90004-X.
Fensome, R. A., and G. L. Williams (2004), The
Lentin and Williams Index of Fossil Dinoflagellates:
2004 Edition, Contrib. Ser., vol. 42,
909 pp., Am. Assoc. of Stratigr. Palynol.,
Pittsburgh, Pa.
Fisher, R. (1953), Dispersion on a sphere, Proc.
R. Soc. London, Ser. A, 217, 295 – 305,
doi:10.1098/rspa.1953.0064.
Gibbs, S. J., N. J. Shackleton, and J. R. Young
(2004), Orbitally forced climate signals in
mid-Pliocene nannofossil assemblages, Mar.
Micropaleontol., 51, 39 – 56, doi:10.1016/
j.marmicro.2003.09.002.
Gibbs, S. J., T. J. Bralower, P. R. Bown, J. C.
Zachos, and L. M. Bybell (2006), Shelf and
open-ocean calcareous phytoplankton assemblages
across the Paleocene– Eocene thermal
maximum: Implications for global productivity
gradients, Geology, 34(4), 233 – 236,
doi:10.1130/G22381.1.
Giusberti, L., D. Rio, C. Agnini, J. Backman,
E. Fornaciari, F. Tateo, and M. Oddone (2007),
Mode and tempo of the Paleocene Eocene thermal
maximum in an expanded section from the
Venetian pre-Alps, Geol. Soc. Am. Bull., 119,
391–412, doi:10.1130/B25994.1.
Hancock, H. J. L., and G. R. Dickens (2005),
Carbonate dissolution episodes in Paleocene
and Eocene sediment, Shatsky Rise,west-central
Pacific [online], Proc. Ocean Drill. Program
Sci. Results, 198, 24 pp. (Available at http://
www-odp.tamu.edu/publications/198_SR/116/
116.htm)
Haq, B. U., and G. P. Lohmann (1976), Early
Cenozoic calcareous nannoplankton biogeography
of theAtlanticOcean,Mar. Micropaleontol.,
1, 119–194, doi:10.1016/0377-8398(76)90008-6.
Hollis, C. J., G. R. Dickens, B. D. Field, C. M.
Jones, and C. P. Strong (2005), The Paleocene-
Eocene transition at Mead Stream, New
Zealand: A southern Pacific record of early
Cenozoic global change, Palaeogeogr. Palaeoclimatol.
Palaeoecol., 215, 313 – 343,
doi:10.1016/j.palaeo.2004.09.011.
Istituto Nazionale di Geofisica e Vulcanologia
(2007), Italian magnetic network and geomagnetic
field maps of Italy at year 2005.0, Boll.
Geod. Sci. Affini., 65, 1 – 47.
Jansen, E., et al. (2007), Palaeoclimate, in Climate
Change 2007: The Physical Science Basis:
Working Group I Contribution to the
Fourth Assessment Report of the IPCC, edited
by S. Solomon et al., pp. 435– 498, Cambridge
Univ. Press, New York.
Kaminski, M. A., and F. M. Gradstein (2005),
Atlas of Paleogene Cosmopolitan Deep-Water
Agglutinated Foraminifera, Spec. Publ., vol.
10, 548 pp., Grzybowski Found., Krakow,
Poland.
Kelly, D. C., T. J. Bralower, J. C. Zachos,
I. Premoli Silva, and E. Thomas (1996), Rapid
diversification of planktonic foraminifera in the
tropical Pacific (ODP Site 865) during the late
Paleocene thermal maximum, Geology, 24(5),
423 – 426, doi:10.1130/0091-7613(1996)024<
0423:RDOPFI>2.3.CO;2.
Kennett, J. P., and L. D. Stott (1991), Abrupt
deep-sea warming, palaeoceanographic
changes and benthic extinctions at the end of
the Palaeocene, Nature, 353, 225 – 229,
doi:10.1038/353225a0.
Kirschvink, J. L. (1980), The least squares line
and plane and the analysis of paleomagnetic
data, Geophys. J. R. Astron. Soc., 62, 699–
718.
Kleypas, J.A., R. A.Feely, V. J.Fabry,C.Langdon,
C. L. Sabine, and L. L. Robbins (2006), Impacts
of ocean acidification on coral reefs and
other marine calcifiers: A guide for future research,
report, 88 pp., NSF, Arlington, Va.
Lirer, F. (2000), A new technique for retrieving
calcareous microfossils from lithified lime deposits,
Micropaleontology, 46, 365– 369.
Lourens, L. J., A. Sluijs, D. Kroon, J. C. Zachos,
E. Thomas, U. Ro¨hl, J. Bowles, and I. Raffi
(2005), Astronomical pacing of late Palaeocene
to early Eocene global warming events, Nature,
435, 1083– 1087, doi:10.1038/nature03814.
Lu, G., and G. Keller (1996), Separating ecological
assemblages using stable isotope signals:
Late Paleocene to early Eocene planktic foraminifera,
DSDP Site 577, J. Foraminiferal
Res., 26, 103– 112.
Luciani, V., L. Giusberti, C. Agnini, J. Backman,
E. Fornaciari, andD. Rio (2007), The Paleocene-
Eocene thermal maximum as recorded by
Tethyan planktonic foraminifera in the Forada
section (northern Italy), Mar. Micropaleontol.,
64, 189 – 214, doi:10.1016/j.marmicro.
2007.05.001.
Mantovani, F., M. Panizza, E. Semenza, and
S. Piacente (1978), L’Alpago (Prealpi bellunesi):
Geologia, geomorfologia, nivopluvimetria, Boll.
Soc. Geol. Ital., 95, 1589–1656.
Martini, E. (1971), Standard Tertiary and Quaternary
calcareous nannoplankton zonation, in
Proceedings of the 2nd Planktonic Conference,
edited by A. Farinacci, vol. 2, pp.
739– 785, Tecnoscienza, Rome.
Molina, E., C. Gonzalvo, M. A. Manchen˜o,
S. Ortiz, B. Schmitz, E. Thomas, and K. von
Salis (2006), Integrated stratigraphy and chronostratigraphy
across the Ypresian-Lutetian
transition in the Fortuna Section (Betic Cordillera,
Spain), Newsl. Stratigr., 42(1), 1 – 19,
doi:10.1127/0078-0421/2006/0042-0001.
Monechi, S., E. Angori, and K. von Salis (2000),
Calcareous nannofossil turnover around the
Paleocene/Eocene transition at Alamedilla
(southern Spain), Bull. Soc. Geol. Fr.,
171(4), 477– 489, doi:10.2113/171.4.477.
Nicolo, M. J., G. R. Dickens, C. J. Hollis, and
J. C. Zachos (2007), Multiple early Eocene
hyperthermals: Their sedimentary expression
on the New Zealand continental margin and
in the deep sea, Geology, 35(8), 699 – 702,
doi:10.1130/G23648A.1.
Nomura, R., and H. Takata (2005), Data report:
Paleocene/Eocene benthic foraminifers, ODP
Leg 199 Sites 1215, 1220, and 1221, equatorial
central Pacific Ocean [online], Proc. Ocean
Drill. Program Sci. Results, 199, 34 pp.
(Available at http://www-odp.tamu.edu/
publications/199_SR/223/223.htm)
Ortiz, S., and E. Thomas (2006), Lower-middle
Eocene benthic foraminifera from the Fortuna
Section (Betic Cordillera, southeastern Spain),
Micropaleontology, 52, 97– 150, doi:10.2113/
gsmicropal.52.2.97.
Pagani,M., N. Pedentchouk, M. Huber, A. Sluijs,
S. Schouten, H. Brinkhuis, J. S. Sinninghe
Damste, G. R. Dickens, and the IODP Expedition
302 Scientists (2006), Arctic hydrology
during global warming at the Palaeocene/
Eocene thermal maximum, Nature, 442,
671– 675, doi:10.1038/nature05043.
Pearson, P. N., R. K. Olsson, B. T. Huber, C.
Hemleben, and W. A. Berggren (2006), Atlas
of Eocene Planktonic Foraminiferas, Spec.
Publ. Cushman Found. Foraminiferal Res.,
41, 514 pp.
Perch-Nielsen, K. (1985), Cenozoic calcareous
nannofossils, in Plankton Stratigraphy, edited
by H. M. Bolli et al., pp. 427– 554, Cambridge
Univ. Press, New York.
Pross, J., and H. Brinkhuis (2005), Organicwalled
dinoflagellate cysts as paleoenvironmental
indicators in the Paleogene: A synopsis
of concepts, Palaeontol. Z., 79, 53– 59.
Quille´ve´re´, F., and R. D. Norris (2003), Ecological
development of acarininids (planktonic
foraminifera) and hydrographic evolution of
Paleocene surface waters, in Causes and Consequences
of Globally Warm Climates in the
Early Paleogene, edited by S. L. Wing et al.,
Spec. Pap. Geol. Soc. Am., vol. 369, pp. 223–
238.
Quille´ve´re´, F., R. D. Norris, I. Moussa, andW. A.
Berggren (2001), Role of photosymbiosis and
biogeography in the diversification of early Paleogene
acarininids (planktonic foraminifera),
Paleobiology, 27, 311 – 326, doi:10.1666/
0094-8373(2001)027<0311:ROPABI>2.0.
CO;2.
Quille´ve´re´, F., R. D. Norris, D. Kroon, and P. A.
Wilson (2008), Transient ocean warming and
shift in carbon reservoir during the early Danian,
Earth Planet. Sci. Lett., 265, 600– 615,
doi:10.1016/j.epsl.2007.10.040.
Raven, J., K. Caldeira, H. Elderfield, O. Hoegh-
Guldberg, P. Liss, U. Riebesell, J. Shepherd,
C. Turley, and A. Watson (2005), Ocean acidification due to increasing atmospheric carbon
dioxide, Policy Doc. 12/05, 60 pp., R. Soc.,
London.
Ravizza, G., R. N. Norris, J. Blusztajn, and M.-P.
Aubry (2001), An osmium isotope excursion
associated with the late Paleocene thermal
maximum: Evidence of intensified chemical
weathering, Paleoceanography, 16, 155–163,
doi:10.1029/2000PA000541.
Ro¨hl, U., J. C. Zachos, E. Thomas, D. C. Kelly,
B. Donner, and T. Westerhold (2004), Multiple
early Eocene thermal maximums, Eos
Trans. AGU, 85(47), Fall Meet. Suppl., Abstract
PP14A-02.
Ro¨hl, U., T. Westerhold, S. Monechi, E. Thomas,
J. C. Zachos, and B. Donner (2005),
The third and final early Eocene thermal maximum:
Characteristics, timing, and mechanisms
of the ‘‘X’’ event, Geol. Soc. Am.
Abstr. Programs, 37(7), 264.
Schmitz, B., and V. Pujalte (2007), Abrupt increase
in seasonal extreme precipitation at the
Paleocene-Eocene boundary, Geology, 35(3),
215–218, doi:10.1130/G23261A.1.
Schmitz, B., F. Asaro, E. Molina, S. Monechi,
K. von Salis, and R. P. Speijer (1997), Highresolution
iridium, d13C, d180, foraminifera
and nannofossil profiles across the latest Paleocene
benthic extinction event at Zumaya,
Spain, Palaeogeogr. Palaeoclimatol. Palaeoecol.,
133, 49 – 68, doi:10.1016/S0031-
0182(97)00024-2.
Schmitz, B., V. Pujalte, and K. Nu´n˜ez-Betelu
(2001), Climate and sea-level perturbations
during the incipient Eocene thermal maximum:
Evidence from siliciclastic units in the
Basque Basin (Ermua, Zumaia and Trabakua
Pass), northern Spain, Palaeogeogr. Palaeoclimatol.
Palaeoecol., 165, 299 – 320,
doi:10.1016/S0031-0182(00)00167-X.
Schouten, S., M. Woltering, W. I. C. Rijpstra, A.
Sluijs, H. Brinkhuis, and J. S. Sinninghe
Damste´ (2007), The Paleocene-Eocene carbon
isotope excursion in higher plant organic matter:
Differential fractionation of angiosperms
and conifers in the Arctic, Earth Planet. Sci.
Lett., 258, 581 – 592, doi:10.1016/j.epsl.
2007.04.024.
Shackleton, N. J., R. M. Corfield, and M. A.
Hall (1985), Stable isotope data and the ontogeny
of Paleocene planktonic foraminifera,
J. Foraminiferal Res., 15, 321– 337.
Sluijs, A., H. Brinkhuis, C. E. Stickley, J.Warnaar,
G. L. Williams, and M. Fuller (2003), Dinoflagellate
cysts from the Eocene-Oligocene
transition in the Southern Ocean: Results from
ODP Leg 189 [online], Proc. Ocean Drill.
Program Sci. Results, 189, 42 pp. (Available
at http://www-odp.tamu.edu/publications/
189_SR/VOLUME/CHAPTERS/104.PDF)
Sluijs, A., J. Pross, and H. Brinkhuis (2005),
From greenhouse to icehouse: Organic-walled
dinoflagellate cysts as paleoenvironmental indicators
in the Paleogene, Earth Sci. Rev., 68,
281 – 315, doi:10.1016/j.earscirev.2004.
06.001.
Sluijs,A., G. J. Bowen, H. Brinkhuis, L. J. Lourens,
and E. Thomas (2007a), The Palaeocene-
Eocene thermal maximum super greenhouse:
Biotic and geochemical signatures, age models
and mechanisms of global change, in Deep
Time Perspectives on Climate Change: Marrying
the Signal From Computer Models and
Biological Proxies, Micropaleontol. Soc. Spec.
Publ., vol. 2, edited by M. Williams et al.,
pp. 323–349, Geol. Soc., London.
Sluijs, A., H. Brinkhuis, S. Schouten, J. C.
Zachos, C.M. John, S. Bohaty, J. S. Sinninghe
Damste´, and E. M. Crouch (2007b), Environmental
precursors to light carbon input at the
Paleocene/Eocene boundary, Nature, 450,
1218–1221, doi:10.1038/nature06400.
Sluijs, A., U. Ro¨hl, S. Schouten, H.-J. Brumsack,
F. Sangiorgi, J. S. Sinninghe Damste´, and
H. Brinkhuis (2008a), Arctic late Paleocene–
early Eocene paleoenvironments with special
emphasis on the Paleocene-Eocene thermal
maximum (Lomonosov Ridge, Integrated
Ocean Drilling Program Expedition 302), Paleoceanography,
23, PA1S11, doi:10.1029/
2007PA001495.
Sluijs, A., et al. (2008b), Eustatic variations during
the Paleocene-Eocene greenhouse world,
Paleoceanography, 23, PA4216, doi:10.1029/
2008PA001615.
Speijer, R. P., and B. Schmitz (1998), A benthic
foraminiferal record of Paleocene sea level
and trophic/redox conditions at Gebel Aweina,
Egypt, Palaeogeogr. Palaeoclimatol. Palaeoecol.,
137, 79 – 101, doi:10.1016/S0031-
0182(97)00107-7.
Stap, L., A. Sluijs, E. Thomas, and L. J. Lourens
(2009), Patterns and magnitude of deep sea
carbonate dissolution during Eocene thermal
maximum 2 and H2, Walvis Ridge, southeastern
Atlantic Ocean, Paleoceanography, 24,
PA1211, doi:10.1029/2008PA001655.
Sztra´kos, K. (2005), Les foraminife`res du Pale´oce`ne
et de l’E´ oce`ne basal du sillon nord-pyre´ne´en
(Aquitaine, France), Rev. Micropaleontol., 48,
175–236, doi:10.1016/j.revmic.2005.06.001.
Thierstein, H. R., K. R. Geitzenauer, B. Molfino,
and N. J. Shackleton (1977), Global synchroneity
of late Quaternary coccolith datum levels
validation by oxygen isotopes, Geology, 5(7),
400–404, doi:10.1130/0091-7613(1977)5<400:
GSOLQC>2.0.CO;2.
Thomas, E. (1998), The biogeography of the late
Paleocene benthic foraminiferal extinction, in
Late Paleocene– Early Eocene Biotic and Climatic
Events in the Marine and Terrestrial
Records, edited by M.-P. Aubry, S. G. Lucas,
and W. A. Berggren, pp. 214–243, Columbia
Univ. Press, New York.
Thomas, E. (2005), Benthic foraminifera and
early Eocene hyperthermal events (SE Atlantic
Ocean), Geol. Soc. Am. Abstr. Programs,
37(7), 413.
Thomas, E. (2007), Cenozoic mass extinctions
in the deep sea:What disturbs the largest habitat
on Earth?, in Large Ecosystem Perturbations:
Causes and Consequences, edited by S. Monechi,
R. Coccioni, and M. R. Rampino, Spec.
Pap. Geol. Soc. Am., vol. 424, pp. 1–23.
Thomas, E., and N. J. Shackleton (1996), The
Palaeocene-Eocene benthic foraminiferal extinction
and stable isotope anomalies, in Correlation
of the Early Paleogene in Northwest
Europe, edited by R. W. O. B. Knox, R. M.
Corfield, and R. E. Dunay, Geol. Soc. Spec.
Publ., vol. 101, pp. 401– 441.
Thomas, E., and J. C. Zachos (2000), Was the
late Paleocene thermal maximum a unique
event?, GFF, 122, 169– 170.
Thomas, E., J. C. Zachos, and T. J. Bralower
(2000), Deep sea environments on a warm
Earth: Latest Paleocene – early Eocene, in
Warm Climates in Earth History, edited by
B. T. Huber, K. G. MacLeod, and S. L. Wing,
pp. 132– 160, Cambridge Univ. Press, Cambridge,
U. K.
Thomas, E., U. Ro¨hl, S. Monechi, T.Westerhold,
B. Balestra, and G. Morelli (2006), An early
Eocene hyperthermal event at 52.5 Ma, in
Climate and Biota of the Early Paleogene
2006, abstract volume, edited by F. Caballero
et al., p. 136, Croman, Bilbao, Spain.
Van Morkhoven, F. P. C. M., W. A. Berggren,
and A. S. Edwards (1986), Cenozoic Cosmopolitan
Deep-Water Benthic Foraminifera,
Bull. Cent. Rech. Explor. Prod. Elf Aquitaine,
vol. 11, 421 pp.
Wei, W., and S. W. Wise Jr. (1990), Biogeographic
gradients of middle Eocene-Oligocene
calcareous nannoplankton in the South Atlantic
Ocean, Palaeogeogr. Palaeoclimatol.
Palaeoecol., 79, 29 – 61, doi:10.1016/0031-
0182(90)90104-F.
Westerhold, T., U. Ro¨hl, J. Laskar, I. Raffi, J.
Bowles, L. J. Lourens, and J. C. Zachos
(2007), On the duration of magnetochrons
C24r and C25n and the timing of early Eocene
global warming events: Implications from the
Ocean Drilling Program Leg 208 Walvis
Ridge depth transect, Paleoceanography, 22,
PA2201, doi:10.1029/2006PA001322.
Zachos, J. C., M. Pagani, L. C. Sloan, K. Billups,
and E. Thomas (2001), Trends, rhythms, and
aberrations in global climate 65 Ma to present,
Science, 292, 686 – 693, doi:10.1126/
science.1059412.
Zachos, J. C., et al. (2004), Proceedings of the
Ocean Drilling Program Initial Reports,
vol. 208, Early Cenozoic Extreme Climates:
The Walvis Ridge Transect, doi:10.2973/odp.
proc.ir.208.2004, Ocean Drill. Program, College
Station, Tex.
Zachos, J. C., et al. (2005), Rapid acidification
of the ocean during the Paleocene-Eocene
thermal maximum, Science, 308, 1611 –
1615, doi:10.1126/science.1109004.
Zachos, J.C., S. Schouten, S. Bohaty,T.Quattlebaum,
A. Sluijs, H. Brinkhuis, S. J. Gibbs, and T. J.
Bralower (2006), Extreme warming of midlatitude
coastal ocean during the Paleocene-
Eocene thermal maximum: Inferences from
TEX86 and isotope data, Geology, 34(9),
737 – 740, doi:10.1130/G22522.1.
Zijderveld, J. D. A. (1967), AC demagnetization
of rocks: Analysis of results, in Methods in
Palaeomagnetism, edited by S. K. Runcorn,
K. M. Creer, and D. W. Collinson, pp. 254–
286, Elsevier, New York.
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