%0 Journal Article
%T Record and time of Neoproterozoic glaciations on Earth<br>全球新元古代冰期的记录和时限
%A ZHAO YanYan
%A ZHENG YongFei
%A <br>赵彦彦
%A 郑永飞
%J 岩石学报
%D 2011
%I 
%X The chemical carbonates are susceptible to post-depositional alteration, especially diagenetic alteration after chemical deposition. Potential diagenetic fluids include seawater, meteoric water and hydrothermal fluid. Sedimentary carbonates are lithified after a series of diagenetic alteration such as compaction, dissolution, precipitation, recrystallization, and cementation. The primary mineral and geochemical signatures can be either preserved or changed during the post-depositional alteration, which are controlled by the composition of diagenetic fluid and the diagenetic temperature. In many cases, however, the post-depositional alteration may impart a secondary signal, so that the chemical signature of sedimentary carbonate no longer accurately reflects its primary property. Thus, a thorough understanding of diagenetic pathways and extents is necessary when interpreting the chemical archives recorded in the carbonate with respect to the construction of paleoenvironment and paleoclimate.
%K Sedimentary carbonate
%K Diagenetic alteration
%K Isotopes
%K Trace elements
%K Geochemistry<br>沉积碳酸盐
%K 成岩蚀变
%K 同位素
%K 微量元素
%K 地球化学
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=621CF755B1A341E5&jid=2013B5467E3054B1614CEC199353FCED&aid=5A6331C32026E9FA7E5EDC3DFF8AB5B0&yid=9377ED8094509821&vid=DB817633AA4F79B9&iid=0B39A22176CE99FB&sid=6313C162FF75889A&eid=90075EB19043D533&journal_id=1000-0569&journal_name=岩石学报&referenced_num=0&reference_num=134