Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/8283
DC Field | Value | Language |
---|---|---|
dc.contributor.authorall | Musumeci, G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Pisa, Pisa, Italia | en |
dc.contributor.authorall | Vaselli, L.; Consiglio Nazionale delle Ricerche (CNR)–Istituto di Geoscienze e Georisorse-Sezione di Pisa, Pisa, Italy | en |
dc.date.accessioned | 2012-10-18T13:54:57Z | en |
dc.date.available | 2012-10-18T13:54:57Z | en |
dc.date.issued | 2012-04 | en |
dc.identifier.uri | http://hdl.handle.net/2122/8283 | en |
dc.description.abstract | In the northern Tyrrhenian Sea, late Miocene intrusions (Monte Capanne pluton and Porto Azzurro pluton) were emplaced at upper crustal levels (<0.2 GPa) in the thrust systems of Elba Island. The emplacement of intrusive rocks is currently explained in the context of late Miocene extensional tectonics. New detailed structural data collected along a continuous natural cross section through the contact aureole of the Porto Azzurro pluton (eastern Elba) where strain localization has occurred within two west-dipping decameter-scale carbonate shear zones, namely the Calanchiole and Felciaio shear zones, are reported here. These shear zones, characterized by a lithological difference with calcite and dolomite marbles dominant in the Calanchiole and Felciaio shear zones, respectively, exhibit a similar rheological behavior. They represent two weakened layers in which west-dipping mylonitic foliation, sheath folds, boudinage structures, and upright folds developed within the contact aureole. Moreover, in correspondence with the Felciaio shear zone, the inversion of metamorphic facies occurs. Meso- and microstructural data give evidence that most of the deformation and displacement in the shear zones was coeval with contact metamorphism and developed under metamorphic conditions retrograde from pyroxene hornfels to hornblende-hornfels facies. Geometric and kinematic features indicate that both shear zones correspond to ductile thrusts, which led to internal stacking of the contact aureole. Therefore, at Elba Island, emplacement of intrusive rocks coeval with late Miocene crustal shortening gives a new perspective on relations between tectonics and magmatism in the northern Apennines. | en |
dc.language.iso | English | en |
dc.publisher.name | Geological Society of America | en |
dc.relation.ispartof | Geosphere | en |
dc.relation.ispartofseries | 2/8(2012) | en |
dc.subject | granite emplacement | en |
dc.subject | contact aureole | en |
dc.subject | deformation and metamorphism | en |
dc.subject | Neogene | en |
dc.subject | northern Apennines | en |
dc.subject | Elba Island | en |
dc.title | Neogene deformation and granite emplacement in the metamorphic units of northern Apennines (Italy): Insights from mylonitic marbles in the Porto Azzurro pluton contact aureole (Elba Island) | en |
dc.type | article | en |
dc.description.status | Published | en |
dc.type.QualityControl | Peer-reviewed | en |
dc.description.pagenumber | 470-490 | en |
dc.identifier.URL | http://geosphere.gsapubs.org/content/8/2/470.abstract | en |
dc.subject.INGV | 04. Solid Earth::04.04. Geology::04.04.09. Structural geology | en |
dc.subject.INGV | 04. Solid Earth::04.07. Tectonophysics::04.07.02. Geodynamics | en |
dc.subject.INGV | 04. Solid Earth::04.07. Tectonophysics::04.07.07. Tectonics | en |
dc.identifier.doi | 10.1130/GES00665.1 | en |
dc.description.obiettivoSpecifico | 1.10. TTC - Telerilevamento | en |
dc.description.obiettivoSpecifico | 3.3. Geodinamica e struttura dell'interno della Terra | en |
dc.description.journalType | JCR Journal | en |
dc.description.fulltext | restricted | en |
dc.relation.eissn | 1553-040X | en |
dc.contributor.author | Musumeci, G. | en |
dc.contributor.author | Vaselli, L. | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia, Sezione Pisa, Pisa, Italia | en |
dc.contributor.department | Consiglio Nazionale delle Ricerche (CNR)–Istituto di Geoscienze e Georisorse-Sezione di Pisa, Pisa, Italy | en |
item.openairetype | article | - |
item.cerifentitytype | Publications | - |
item.languageiso639-1 | en | - |
item.grantfulltext | restricted | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | Università di Pisa | - |
crisitem.author.dept | Istituto di Geoscienze e Georisorse, UO Pisa, Pisa, Italy | - |
crisitem.author.orcid | 0000-0001-5343-4708 | - |
crisitem.classification.parent | 04. Solid Earth | - |
crisitem.classification.parent | 04. Solid Earth | - |
crisitem.classification.parent | 04. Solid Earth | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
Appears in Collections: | Article published / in press |
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Geosphere_Musumeci_etal_2012.pdf | 5.55 MB | Adobe PDF |
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