陆生蜗牛壳体碳氧同位素在古环境中的应用综述  

Implication and Application of Stable Carbon and Oxygen Isotopes of Land Snail Shell Carbonate

作　　者：曾娜[1] 柏松[1] 黄成敏[1] 

机构地区：[1]四川大学建筑与环境学院环境科学与工程系,成都610065

出　　处：《地质调查与研究》2008年第1期75-80,共6页Geological Survey and Research

基　　金：国家重点基础研究发展计划项目:白垩纪重大地质事件与温室气候变化综合研究(2006CB701406)

摘　　要：陆生蜗牛壳体碳、氧稳定同位素组成分别受蜗牛生长时期植被中碳同位素组成和大气水中氧同位素组成的控制,已成为古气候和古环境重建的重要代用指标。本文详细介绍了蜗牛壳体碳酸盐碳、氧同位素古气候重建的指示机理、样品预处理方法及其在14C测年、古气候和古植被研究中的应用现状。在此基础上讨论了蜗牛壳体碳酸盐碳、氧同位素古气候解释中存在的问题,介绍了该领域未来的研究方向与趋势。The compositions of stable carbon and oxygen isotope of land snail shell carbonate depend on the composition of carbon isotope in vegetation of snail living surrounding and the composition of oxygen isotope in meteoric water, and provide a proxy indicator for paleoclimatic and paleoenvironmental reconstruction. The mechanism of stable carbon and oxygen isotopes in land snail shell carbonate for paleoclimatic reconstruction is analyzed, as well as the pre-treatment of samples, the current situation in ^14C dating and studies of paleoclimate and paleovegetation. On the basis, the problem which existing in the paleoclimatic explanation of composition of stable carbon and oxygen isotopes of land snail shell carbonate is discussed deeply. Finally, the research trend of future is suggested.

关 键 词：陆生蜗牛壳体 碳和氧稳定同位素 古气候 古环境 

分 类 号：P579[天文地球—矿物学]