摘要
我国南方末元古代间冰期的锰矿层 (大塘坡期 )出现了普遍超过 +4 0‰的异常高δ3 4 S值的沉积黄铁矿 ,这是全球性的“雪球”事件的响应。全球海洋从“冰室”到“温室”的剧烈环境变化不仅诱发“早寒武世生物大爆发” ,也是产生海洋硫和碳同位素巨大漂移的原因。
The ultra-high δ 34S values of sedimentary pyrite, exceeded +40‰, occurring in interglacial manganese mineralization beds (Datangpo Stage) of terminal Proterozoic in southern China are response to global “snowball Earth”. From “Ice House” to “Green House”, a dramatic environment change in global oceans not only incurs 'the early Cambrian bio-radiation', but also results in enormous excursion of sulfur and carbon isotopes of ocean water.
出处
《矿物岩石地球化学通报》
CAS
CSCD
2001年第4期320-322,共3页
Bulletin of Mineralogy, Petrology and Geochemistry
基金
国家自然科学基金资助项目 ( 4 99730 0 8)
关键词
硫同位素
"雪球"事件
大塘坡期锰矿层
sulfur isotope
“Snowball Earth”event
manganese mineralization beds in Datangpo Stage
