四川宁南银厂沟震旦-寒武纪交变期碳、氧同位素地球化学特征  

Geochemical Characteristics of Carbon and Oxygen Isotopic Compositions on the Sinian-Cambrian Boundary In Yinchang Valley, Ningnan

作　　者：李雁龙[1] 钟长洪[1] 马比阿伟 刘炳璋[1] 

机构地区：[1]四川省地矿局攀西地质队,四川西昌615000

出　　处：《四川地质学报》2010年第1期82-85,共4页Acta Geologica Sichuan

摘　　要：扬子地台西缘攀西地区,晚震旦世-早寒武世为一套连续沉积碳酸盐岩,众多科研文献中时代地层、岩性地层和生物地层的划分各异。在此交变期及其近前后,随之发生诸多地质事件,成为地学研究的热点之一。于宁南等四幅1:5万区调工作中,实测灯影组麦地坪段地层剖面,采集新鲜岩样,测试碳、氧同位素,试从稳定同位素地球化学角度阐述其指示意义,提供研究震旦-寒武纪交变期的地球化学资料。The Upper Sinian and Lower Cambrian in the Panzhihua-Xichang region is a set of continuous carbonate deposit. Many geological events occurred near the Sinian-Cambrian boundary. The δ 13C and δ 18O values for carbonate from the Maidiping Member of the Dengying Formation in Yinchang Valley, Ningnan provide very important information for studying these geological events.

关 键 词：碳 、氧同位素 震旦-寒武纪交变期 灯影组麦地坪段 四川宁南 

分 类 号：P593[天文地球—地球化学]