摘要
The Ediacaran Shuram excursion(SE)is widely regarded as oneof the largest carbon isotope(δ^(13)C)negative excursions in Earthhistory,with carbonate δ^(13)C values down to ca.-12%e(VPDB)[1].This event has been reported in Ediacaran strata on a global scale,and is closely associated with the earliest emergence of macro-scopic animal life in fossil record[2].Numerous hypotheses havebeen proposed to account for this profound carbon cycle anomaly,including both primary[2-7]and diagenetic[8-11]origins.Amongall the published hypotheses,a common ground is the long-standing and fundamental assumption of a marine origin for thebedded carbonates that record the SE.
作者
Huan Cui
崔欢(Equipe Géomicrobiologie,Institut de Physique du Globe de Paris(IPGP),Universitéde Paris,Paris 75005,France;Stable Isotope Laboratory and CIFAR Earth 4D Group,Department of Earth Sciences,University of Toronto,Toronto,ON M5S 3B1,Canada)
基金
jointly supported from the CIFAR (Canadian Institute for Advanced Research) “Earth 4D: Subsurface Science and Exploration” Program at the Université de Paris and University of Toronto。
