globalchange  > 气候变化与战略
DOI: 10.1073/pnas.2002918117
论文题名:
Calibrating the coevolution of Ediacaran life and environment
作者: Rooney A.D.; Cantine M.D.; Bergmann K.D.; Gómez-Pérez I.; Baloushi B.A.; Boag T.H.; Busch J.F.; Sperling E.A.; Strauss J.V.
刊名: Proceedings of the National Academy of Sciences of the United States of America
ISSN: 0027-8424
出版年: 2020
卷: 117, 期:29
起始页码: 16824
结束页码: 16830
语种: 英语
英文关键词: Carbon isotopes ; Ediacaran ; Neoproterozoic ; Re-Os geochronology ; Shuram
Scopus关键词: carbon ; ancestry group ; animal ; Article ; calibration ; Canada ; coevolution ; conceptual framework ; Ediacaran ; environmental change ; glaciation ; macrofossil ; nonhuman ; paleoenvironment ; priority journal ; Proterozoic ; radiolabeling ; carbon cycle ; environment ; fossil ; geographic and geological phenomena ; Animals ; Biological Coevolution ; Carbon Cycle ; Environment ; Fossils ; Geological Phenomena
英文摘要: The rise of animals occurred during an interval of Earth history that witnessed dynamic marine redox conditions, potentially rapid plate motions, and uniquely large perturbations to global biogeochemical cycles. The largest of these perturbations, the Shuram carbon isotope excursion, has been invoked as a driving mechanism for Ediacaran environmental change, possibly linked with evolutionary innovation or extinction. However, there are a number of controversies surrounding the Shuram, including its timing, duration, and role in the concomitant biological and biogeochemical upheavals. Here we present radioisotopic dates bracketing the Shuram on two separate paleocontinents; our results are consistent with a global and synchronous event between 574.0 ± 4.7 and 567.3 ± 3.0 Ma. These dates support the interpretation that the Shuram is a primary and synchronous event postdating the Gaskiers glaciation. In addition, our Re-Os ages suggest that the appearance of Ediacaran macrofossils in northwestern Canada is identical, within uncertainty, to similar macrofossils from the Conception Group of Newfoundland, highlighting the coeval appearance of macroscopic metazoans across two paleocontinents. Our temporal framework for the terminal Proterozoic is a critical step for testing hypotheses related to extreme carbon isotope excursions and their role in the evolution of complex life. © 2020 National Academy of Sciences. All rights reserved.
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/164135
Appears in Collections:气候变化与战略

Files in This Item:

There are no files associated with this item.


作者单位: Rooney, A.D., Department of Earth and Planetary Sciences, Yale University, New Haven, CT 06520, United States; Cantine, M.D., Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, United States; Bergmann, K.D., Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, United States; Gómez-Pérez, I., Petroleum Development Oman, Exploration Directorate, Muscat, 100, Oman; Baloushi, B.A., Petroleum Development Oman, Exploration Directorate, Muscat, 100, Oman; Boag, T.H., Department of Geological Sciences, Stanford University, Stanford, CA 94305, United States; Busch, J.F., Department of Earth Sciences, Dartmouth College, Hanover, NH 03755, United States; Sperling, E.A., Department of Geological Sciences, Stanford University, Stanford, CA 94305, United States; Strauss, J.V., Department of Earth Sciences, Dartmouth College, Hanover, NH 03755, United States

Recommended Citation:
Rooney A.D.,Cantine M.D.,Bergmann K.D.,et al. Calibrating the coevolution of Ediacaran life and environment[J]. Proceedings of the National Academy of Sciences of the United States of America,2020-01-01,117(29)
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Rooney A.D.]'s Articles
[Cantine M.D.]'s Articles
[Bergmann K.D.]'s Articles
百度学术
Similar articles in Baidu Scholar
[Rooney A.D.]'s Articles
[Cantine M.D.]'s Articles
[Bergmann K.D.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Rooney A.D.]‘s Articles
[Cantine M.D.]‘s Articles
[Bergmann K.D.]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.