Stable carbon and oxygen isotopic compositions of carbonates in middle Mesoproterozoic Wumishan Formation and sea-level change

作     者：Renwei Li Jinshi Chen Shukun Zhang 

作者机构：Chinese Acad Sci Inst Geol Beijing 100029 Peoples R China Chinese Acad Geol Sci Inst Geomech Beijing 100083 Peoples R China 

出 版 物：《Chinese Science Bulletin》 (科学通报(英文版))

年 卷 期：1999年第44卷第23期

页      面：2130-2136页

核心收录：

学科分类：070902[理学-地球化学] 0709[理学-地质学] 07[理学] 

基　　金：National Natural Science Foundation of China NSFC: 49573199 

主　　题：carbon and oxygen isotopes Mesoproterozoic. sea-level change. 

摘      要：δ13C of dolostones from the Wumishan Formation (1 310-1 207 Ma) in the Ming Tombs area near Beijing ranges from - 1.5 to 1.5‰ (PDB), and generally, the δ18O ranges from - 4 to - 5‰ (PDB). The secular variation of stable carbon isotopic compositions is cyclic. δ13C displays positive shifts from a sequence boundary to 1.5 per mil (PDB), then