收稿日期: 1995-05-22
修回日期: 1995-09-18
网络出版日期: 1996-05-01
GLOBAL EVENTS AT THE PALEOCENE-EOCENE BOUNDARY
Received date: 1995-05-22
Revised date: 1995-09-18
Online published: 1996-05-01
王成善，刘志飞 . 古新世—始新世界线的全球事件[J]. 地球科学进展, 1996 , 11(3) : 288 -293 . DOI: 10.11867/j.issn.1001-8166.1996.03.0288
Lots of global changes at the Paleocene-Eocene boundary, Which were discovered by Deep Sea Drilling Project and which have been attracting geologists’ s attention, include: a change in lithology from glauconitic quartz sand to clay; a change in clay mineral suites from illite/smectite-dominated to kaolinite-dominated; the extinction and migration in the terrestrial flora; an increased species turnover rate in marine calcareous nanofossils; the extinction and lower diversity in the benthic foraminiferal assemblages; a considerable excursion in δ18O and δ13C values; a change in the evolution of land mammals; a significant reduction of the intensity of atmospheric circulation; a change in the style of abyssal circulation; an increase in water depth; and one to two order of magnitude increase in hydrothermal activity at the Paleocene-Eocene boundary. The Paleocene-Eocene boundary was the result of global tectonic events by researching lithology, palaeobiology, palaeoclimatology, palaeoceanography of the Paleocene-Eocene stratigraphic sections. The events include that global plate boundary rearrangement, changes in patterns of spreading centers and transform faults, and increase in hydrothermal activity.
Key words： Paleocene; Eocene; Boundary; Global event; Tectonics
[1]David k Rea, James C Zachos, Robert M Owen and Philip D Gingerich. Global change at the Paleocene-Eocene boundary, climates and evolutionary consequences of tectonic events. Palaegeography，Palaeoclimatology，Palaegeography,1990，(?9):117-128.
[2]Thomas G Gibson, Laurel M Bybell and James P Owens. Latest Paleocene lithologic and biotic events in neritic deposits of southwestern New Jersey. Paleoceanography,1993，8(4):495-514.
[3]Christian Robert and James P Kennett. Antarctic subtropical humid episode at the Paleocene-Eocene boundary:Clay-mineral evidence. Geology，1994(22):211-214.
[4]Paul L Koch, Jamas C Zochos and Philip D Gingerich. Correlation between isotope records in marine and continental carbon reservoirs near the Palaeocene/Eocene boundary. Nature,1992,358:23.
[5]Gibson Thomas G and Bybell Laurel M. Paleocene/Eocene ooundary strata and events in the U S Atlantic Coastal Plain.Journal of Vertebrate Paleontology,1993，13(3 suppl.):37.
[6]Kennett J P and Stott L D. Abrupt deep-sea warming, palaeoceanographic changes'and benthic extinctions at the end of the Palaeocene. Nature,1991, 353:225-229.
[7]Steven A Hovan,David K Rea. Paleocene/Eocene boundary changes in atmospheric and oceanic circulation;a southern hemisphere record. Geology，1992，20:15-18.
[8] Christian Robert and James P Kennett. Paleocene and Eocene kaolinite distribution in the South Atlantic and Southern Ocean;Antarctic climatic and paleoceanographic implications. Marine Geology，1992,103:99-110.
[9] Koch Paul L and Zachos James C. Mammalian biochronology of the Paleocene-Eocene boundary in North America,Europe and Asia. Journal of Vertebrate Paleontology，1993，13 ( 3 suppl.):47.
[10] Gunnell Gregg F.Bartels William Sand Gingerich Philip D. Paleocene-Eocene boundary in continental North America: Biostratigraphy and Geochronology. Northern Bighorn Basin, Wyoming. Journal of Vertebrate Paleontology,1993，13 (3 suppl):39.
[11] Williamson Thomas E and Lucas Spencer G. Paleocene-Eocene boundary in the San Juan Basin，New Mexico一Colorado. Journal of Vertebrate Paleontology,1993，13(3 suppl):63.
[12] Shackleton N and Boersma A. The climate of the eocene ocean. Journal of the Geological Society,London，1981,138:153-157.
[13] David K Rea,Margaret Leinen,Thomas R Janecek. Geologic approach to the long-term history of atmospheric circulation. Science，1985,227:721-725.
[14] Robert M Owen and David K Rea. Sea-floor hydrothermal activity links climatic to tectonics;The eocene carbon dioxide greenhouse. Science,1985，227:166-169.
[15] Norman H Sleep. Plate tectonics and the evolution of climate. U S National Report to International Union of Geodesy and Geophysics 1991-1994.1995.7:199-203.
/
| 〈 |
|
〉 |
甘公网安备62010202000687
