Extensive marine anoxia during the terminal Ediacaran Period

Publication Date:
2018-06-21
Publisher:
American Association for the Advancement of Science (AAAS)
Electronic ISSN:
2375-2548
Topics:
Natural Sciences in General
Published by:
http://www.aaas.org/
_version_ 1836398981050007552
autor Zhang, F., Xiao, S., Kendall, B., Romaniello, S. J., Cui, H., Meyer, M., Gilleaudeau, G. J., Kaufman, A. J., Anbar, A. D.
beschreibung The terminal Ediacaran Period witnessed the decline of the Ediacara biota (which may have included many stem-group animals). To test whether oceanic anoxia might have played a role in this evolutionary event, we measured U isotope compositions ( 238 U) in sedimentary carbonates from the Dengying Formation of South China to obtain new constraints on the extent of global redox change during the terminal Ediacaran. We found the most negative carbonate 238 U values yet reported (–0.95 per mil), which were reproduced in two widely spaced coeval sections spanning the terminal Ediacaran Period (551 to 541 million years ago). Mass balance modeling indicates an episode of extensive oceanic anoxia, during which anoxia covered 〉21% of the seafloor and most U entering the oceans was removed into sediments below anoxic waters. The results suggest that an expansion of oceanic anoxia and temporal-spatial redox heterogeneity, independent of other environmental and ecological factors, may have contributed to the decline of the Ediacara biota and may have also stimulated animal motility.
citation_standardnr 6289325
datenlieferant ipn_articles
feed_id 228416
feed_publisher American Association for the Advancement of Science (AAAS)
feed_publisher_url http://www.aaas.org/
insertion_date 2018-06-21
journaleissn 2375-2548
publikationsjahr_anzeige 2018
publikationsjahr_facette 2018
publikationsjahr_intervall 7984:2015-2019
publikationsjahr_sort 2018
publisher American Association for the Advancement of Science (AAAS)
quelle Science Advances
relation http://advances.sciencemag.org/cgi/content/short/4/6/eaan8983?rss=1
search_space articles
shingle_author_1 Zhang, F., Xiao, S., Kendall, B., Romaniello, S. J., Cui, H., Meyer, M., Gilleaudeau, G. J., Kaufman, A. J., Anbar, A. D.
shingle_author_2 Zhang, F., Xiao, S., Kendall, B., Romaniello, S. J., Cui, H., Meyer, M., Gilleaudeau, G. J., Kaufman, A. J., Anbar, A. D.
shingle_author_3 Zhang, F., Xiao, S., Kendall, B., Romaniello, S. J., Cui, H., Meyer, M., Gilleaudeau, G. J., Kaufman, A. J., Anbar, A. D.
shingle_author_4 Zhang, F., Xiao, S., Kendall, B., Romaniello, S. J., Cui, H., Meyer, M., Gilleaudeau, G. J., Kaufman, A. J., Anbar, A. D.
shingle_catch_all_1 Extensive marine anoxia during the terminal Ediacaran Period
The terminal Ediacaran Period witnessed the decline of the Ediacara biota (which may have included many stem-group animals). To test whether oceanic anoxia might have played a role in this evolutionary event, we measured U isotope compositions ( 238 U) in sedimentary carbonates from the Dengying Formation of South China to obtain new constraints on the extent of global redox change during the terminal Ediacaran. We found the most negative carbonate 238 U values yet reported (–0.95 per mil), which were reproduced in two widely spaced coeval sections spanning the terminal Ediacaran Period (551 to 541 million years ago). Mass balance modeling indicates an episode of extensive oceanic anoxia, during which anoxia covered >21% of the seafloor and most U entering the oceans was removed into sediments below anoxic waters. The results suggest that an expansion of oceanic anoxia and temporal-spatial redox heterogeneity, independent of other environmental and ecological factors, may have contributed to the decline of the Ediacara biota and may have also stimulated animal motility.
Zhang, F., Xiao, S., Kendall, B., Romaniello, S. J., Cui, H., Meyer, M., Gilleaudeau, G. J., Kaufman, A. J., Anbar, A. D.
American Association for the Advancement of Science (AAAS)
2375-2548
23752548
shingle_catch_all_2 Extensive marine anoxia during the terminal Ediacaran Period
The terminal Ediacaran Period witnessed the decline of the Ediacara biota (which may have included many stem-group animals). To test whether oceanic anoxia might have played a role in this evolutionary event, we measured U isotope compositions ( 238 U) in sedimentary carbonates from the Dengying Formation of South China to obtain new constraints on the extent of global redox change during the terminal Ediacaran. We found the most negative carbonate 238 U values yet reported (–0.95 per mil), which were reproduced in two widely spaced coeval sections spanning the terminal Ediacaran Period (551 to 541 million years ago). Mass balance modeling indicates an episode of extensive oceanic anoxia, during which anoxia covered >21% of the seafloor and most U entering the oceans was removed into sediments below anoxic waters. The results suggest that an expansion of oceanic anoxia and temporal-spatial redox heterogeneity, independent of other environmental and ecological factors, may have contributed to the decline of the Ediacara biota and may have also stimulated animal motility.
Zhang, F., Xiao, S., Kendall, B., Romaniello, S. J., Cui, H., Meyer, M., Gilleaudeau, G. J., Kaufman, A. J., Anbar, A. D.
American Association for the Advancement of Science (AAAS)
2375-2548
23752548
shingle_catch_all_3 Extensive marine anoxia during the terminal Ediacaran Period
The terminal Ediacaran Period witnessed the decline of the Ediacara biota (which may have included many stem-group animals). To test whether oceanic anoxia might have played a role in this evolutionary event, we measured U isotope compositions ( 238 U) in sedimentary carbonates from the Dengying Formation of South China to obtain new constraints on the extent of global redox change during the terminal Ediacaran. We found the most negative carbonate 238 U values yet reported (–0.95 per mil), which were reproduced in two widely spaced coeval sections spanning the terminal Ediacaran Period (551 to 541 million years ago). Mass balance modeling indicates an episode of extensive oceanic anoxia, during which anoxia covered >21% of the seafloor and most U entering the oceans was removed into sediments below anoxic waters. The results suggest that an expansion of oceanic anoxia and temporal-spatial redox heterogeneity, independent of other environmental and ecological factors, may have contributed to the decline of the Ediacara biota and may have also stimulated animal motility.
Zhang, F., Xiao, S., Kendall, B., Romaniello, S. J., Cui, H., Meyer, M., Gilleaudeau, G. J., Kaufman, A. J., Anbar, A. D.
American Association for the Advancement of Science (AAAS)
2375-2548
23752548
shingle_catch_all_4 Extensive marine anoxia during the terminal Ediacaran Period
The terminal Ediacaran Period witnessed the decline of the Ediacara biota (which may have included many stem-group animals). To test whether oceanic anoxia might have played a role in this evolutionary event, we measured U isotope compositions ( 238 U) in sedimentary carbonates from the Dengying Formation of South China to obtain new constraints on the extent of global redox change during the terminal Ediacaran. We found the most negative carbonate 238 U values yet reported (–0.95 per mil), which were reproduced in two widely spaced coeval sections spanning the terminal Ediacaran Period (551 to 541 million years ago). Mass balance modeling indicates an episode of extensive oceanic anoxia, during which anoxia covered >21% of the seafloor and most U entering the oceans was removed into sediments below anoxic waters. The results suggest that an expansion of oceanic anoxia and temporal-spatial redox heterogeneity, independent of other environmental and ecological factors, may have contributed to the decline of the Ediacara biota and may have also stimulated animal motility.
Zhang, F., Xiao, S., Kendall, B., Romaniello, S. J., Cui, H., Meyer, M., Gilleaudeau, G. J., Kaufman, A. J., Anbar, A. D.
American Association for the Advancement of Science (AAAS)
2375-2548
23752548
shingle_title_1 Extensive marine anoxia during the terminal Ediacaran Period
shingle_title_2 Extensive marine anoxia during the terminal Ediacaran Period
shingle_title_3 Extensive marine anoxia during the terminal Ediacaran Period
shingle_title_4 Extensive marine anoxia during the terminal Ediacaran Period
timestamp 2025-06-30T23:35:42.326Z
titel Extensive marine anoxia during the terminal Ediacaran Period
titel_suche Extensive marine anoxia during the terminal Ediacaran Period
topic TA-TD
uid ipn_articles_6289325