沉积与特提斯地质2009，Vol.29Issue(2)：107-111,5.
辽西凌源雾迷山组碳酸盐岩碳氧同位素特征研究
limestones and fossils [J]. Geochim Cosmochim Acta,1964,18:1787-1816.Carbon and oxygen isotopic evolution in the carbonate rocks from the Wumishan Formation in Lingyuan, western Liaoning
摘要
Abstract
The original deposits of the carbonate rocks from the Wumishan Formation in Lingyuan, western Liaoning are explored on the basis of carbon and oxygen isotopic and Mn/Sr ratios. The δ13CPDB values range between -2‰ and 2‰ and δ18O values range between -10‰ and -4‰, with an average of 0.15‰ and -6.2‰, respectively. The δ13C values exhibit a markedly positive shift in the carbonate rocks from the upper and middle parts of the first member of the Wumishan Formation. This shift may be caused by abundant algal production and organic carbon increase. The climatic cooling down and glaciation gave rise to the increase of δ18O values, especially in the levels with negativeδ13C values. The carbon and oxygen isotopic evolution in the carbonate rocks may be correlated to the sea-level changes.关键词
辽西/凌源/雾迷山组/碳氧同位素/海平面变化Key words
Western Liaoning/Lingyuan/Wumishan Formation/carbon and oxygen isotopes/sea-level changes分类
能源科技引用本文复制引用
李鑫,罗顺社,旷红伟,苏洁,银晓..辽西凌源雾迷山组碳酸盐岩碳氧同位素特征研究[J].沉积与特提斯地质,2009,29(2):107-111,5.基金项目
国家自然科学基金"辽东地区臼齿碳酸盐岩显微组构与岩石地球化学研究"(40772078) （40772078）
中石化海相前瞻性项目"燕山地区中新元古界层序地层学与沉积相研究(G0800-06-ZS-350) （G0800-06-ZS-350）
