文献类型：期刊文献

英文题名：Nitrogen cycling perturbations and their links to the biological evolution in the Ediacaran Dengying Formation, South China

作者：Wei, Kai[1]; Cao, Hansheng[2,3,4]; Wang, Zaiyun[2,3,4]; An, Zhihui[1]; Chen, Fajin[2,3,4]; Huang, Hanli[2,3,4]; Chen, Chunqing[2,3,4]; Zeng, Yuda[2,3,4]

机构：[1] Wuhan Center, China Geological Survey, Geosciences Innovation Center of Central South China, Wuhan, 430205, China; [2] Laboratory for Coastal Ocean Variation and Disaster Prediction, College of Ocean and Meterology, Guangdong Ocean University, Zhanjiang, 524088, China; [3] Key Laboratory of Climate, Resources and Environment in Continental Shelf Sea and Deep Sea, Department of Education of Guangdong Province, College of Ocean and Meteorology, Guangdong Ocean University, Zhanjiang, 524088, China; [4] Key Laboratory of Space Ocean Remote Sensing and Application, Ministry of Natural Resources, Beijing, 100081, China

年份：2026

外文期刊名：SSRN

收录：EI(收录号：20260050250)

语种：英文

外文关键词：Biochemistry - Biodiversity - Denitrification - Explosives - Isotopes - Nitrogen - Nitrogen removal - Organic carbon

外文摘要：The terminal Ediacaran period witnessed major environmental and biological turnovers, yet the mechanisms connecting these changes remain poorly constrained. Here, we present high-resolution carbonate carbon isotope (δ13Ccarb), bulk nitrogen isotope (δ15Nbulk), and biogenic silica (BSi) records from the YD-4 drill core in the Ediacaran Dengying Formation. In the aftermath of the Shuram excursion, the Shibantan Member records a coupled geochemical signal, characterized by a distinct positive δ13Ccarb excursion accompanied by a negative δ15N shift (to ? 2026, The Authors. All rights reserved.