Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/9167
DC Field | Value | Language |
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dc.contributor.authorall | Bonardi, Maurizio | en |
dc.contributor.authorall | Percival, Jeanne B. | en |
dc.contributor.authorall | Tosi, Luigi | en |
dc.contributor.editorall | Kodama, H. | en |
dc.contributor.editorall | Mermuth, A.R. | en |
dc.contributor.editorall | Torrance, J.K. | en |
dc.date.accessioned | 2014-12-07T00:43:17Z | en |
dc.date.available | 2014-12-07T00:43:17Z | en |
dc.date.issued | 1997-07-15 | en |
dc.identifier.uri | http://hdl.handle.net/2122/9167 | en |
dc.description.abstract | Mineralogical and textural variations in Upper Pleistocene and Holocene clay sediments from three cores taken in different depositional environments: the Venetian lagoonal littoral zone, the South Yellow Sea and the Yangtze River Delta, are reported. The compositional variations of clay layers from the three sites are attributed to major global climatic changes. Although the compositional difference of clay sediments of the three sites reflects the petrology of their different areas of provenance, the relative abundance and textural variations show a correlation with climatic-driven changes in their depositional environment. In the Venice lagoon the carbonate content decreases from cold to warm periods whereas in the Yangtze River delta and in the South Yellow Sea carbonates are absent or not significant, and the most noticeable changes are given by the total clay mineral content variations (chlorite, smectite, mixed-layer clay minerals and muscovite) and feldspar. There is a general increase in abundance of clay minerals and a decrease in feldspar content during warm periods. The cores from all three study sites have overconsolidated continentally-derived clay layers at the Pleistocenel/Holocene (ca. 10,000 BP) boundary. The overconsolidated nature of these hard clay layers is due to long subaerial exposure under a cold and dry climatic regime before the Holocene (Flandrian) transgression. | en |
dc.language.iso | English | en |
dc.relation.ispartof | 11th International Clay Conference | en |
dc.subject | Mineralogical and textural variations | en |
dc.subject | Upper Pleistocene and Holocene clay sediments | en |
dc.subject | Venetian lagoonal littoral | en |
dc.subject | South Yellow Sea | en |
dc.subject | Yangtze River Delta | en |
dc.title | The compositional relation of selected clay sediments to late Pleistocene-Holocene depositional environments from Italy and China | en |
dc.title.alternative | CLAY SEDIMENTS FROM ITALY AND CHINA | en |
dc.type | Conference paper | en |
dc.description.status | Published | en |
dc.subject.INGV | 04. Solid Earth::04.04. Geology::04.04.05. Mineralogy and petrology | en |
dc.description.ConferenceLocation | Ottawa, Canada | en |
dc.relation.references | Bonardi, M. and Tosi, L. 1994. Effects of Late Quaternary climatic changes on an exposed clay layer in the Lagoon of Venice (Italy). Proc. of the 14th International Sedimentological Congress, Recife, Brazil, D17. Bonardi, M. and Tosi, L. 1995. Caratterizzazione e differenziazione mineralogica dei livelli sabbiosi tardo quaternari del litorale veneziano. II Quaternario, Italian Journal of Quaternary Sciences, 8: 315-322. Bonardi, M. and Tosi, L. 1996. Evidence of climatic variations in Upper Pleistocene and Holocene sediments from the lagoon of Venice (Italy) and the Yellow Sea (China). World Resources Review, 9,1: 101-112. Bonardi, M., Tosi, L., Percival, J., Lirong, C. and Zanucco, A. 1995. Investigation of Late-Quaternary sediments from the South Yellow Sea and the Yangtze River Delta. Italian Contribution to the China-Italy Bilateral Seminar on Marine Geology (4-6 October 1994, Qingdao, China), Tech. Rep. 40, 18-24, Marabini F. Editor, Istituto di Geologia Marina, CNR, Bologna. Bortolami, G.c., Carbognin, L. and Gatto, P. 1984. The natural subsidence in the Lagoon of Venice, Italy. Land Subsidence, lAHS Publ. No 151,777-785. Bortolami, G.C., Fontes, J.c., Markgraf, V. and Saliege, J.F. 1977. Land, sea and climate in the northern Adriatic region during Late Pleistocene and Holocene. Paleogeog. Paleoclim. Paleoecol. 21: 139-156. Ciabatti, M. Curzi, P.V. and Ricci Lucchi, F. 1986. Sedimentazione quaternaria nell' Adriatico Centrale. Atti Riun. Gr. Sedim., C.N.R. Ancona, Italy, 125-139. Gatto, P. and Carbognin, L. 1981. The lagoon of Venice: natural environmental trend and man-induced modification . Hydro!. Sci. Bull. 26: 379-391. Gatto, P. and Previatello, P. 1974. Significato stratigrafico, comportamento meccanico e distribuzione nella Laguna di Venezia di una argilla sovraconsolidata nota come "caranto". C.N.R. TR 70, Venice. Ortolani, F. and Pagliuca, S. 1994. Variazioni c1imatiche e cri si dell'ambiente antropizzato, II Quaternatio. 7: 351-356. Qin, Y. and Zhao, S. 1991. Quaternat), coastline changes in China. XIII INQUA Congress, China Ocean Press, Beijing 192 pp. Qin, Y., Zhao, Y., Chen, L. and Zao, S. 1990. Geology of Bohai Sea. China Ocean Press, Beijing, 354 pp. Tosi, L. 1994. L'evoluzione paleoambientale tardo quaternaria del litorale veneziano nelle attuali conoscenze. II Quaternario, Italian Journal of Quaternary Sciences, 7: 589-596. Veggiani, A. 1994. I deterioramenti c1imatici dell'Eta' del Ferro e dell'Alto Medioevo, Bull. Soc. Torricelliana di Scienze e Lettere. 45: 1-80. Xu, S., Li, P. and Wang, J. 1982. A sedimentaty model of the Ghang Jiang (Yangtze) river Delta. Sinica Quat. Res. 6: 83-88. Yang, Z. and Lin, H. 1991. Quaternary Processes in Eastern China and Their International Correlation. Geological Publishing House, Beijing, China, 139 pp. Zhao, S. and Li, G. 1991. Origin and shallow-layer structure of the sediments in the Yellow Sea Trough. Quaternary Coastline Changes in China, 89-99. IGCP-274 China Working Group. | en |
dc.description.obiettivoSpecifico | 3A. Ambiente Marino | en |
dc.publisher | ICC97 Organizing Committee, Ottawa (CAN) | en |
dc.description.fulltext | open | en |
dc.contributor.author | Bonardi, Maurizio | en |
dc.contributor.author | Percival, Jeanne B. | en |
dc.contributor.author | Tosi, Luigi | en |
dc.contributor.editor | Kodama, H. | en |
dc.contributor.editor | Mermuth, A.R. | en |
dc.contributor.editor | Torrance, J.K. | en |
item.openairetype | Conference paper | - |
item.cerifentitytype | Publications | - |
item.languageiso639-1 | en | - |
item.grantfulltext | open | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
crisitem.classification.parent | 04. Solid Earth | - |
Appears in Collections: | Conference materials |
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