大洋铁锰结壳的地球化学与古海洋环境示踪

Geochemistry of Ferromanganese Crusts and the Tracing of Paleocean Environment

主要回顾近年来铁锰结壳在深度定年、主量元素、微量元素及Sr ,Nd ,Pb同位素地球化学及其古海洋环境示踪方面的主要研究进展 ,并提出有关认识和展望。

Ferromanganese crusts are one of the most potentially valuable mineral resources. Recently, scientists have found that ferromanganese crusts with lower growth rates and with no or few sediments during their formation can reflect the changes in oceanic environment that took place on ten million-year scales and can reflect the history of deposit gap, which is impossible by studying the pelagic sediments. So research on ferromanganese crusts can provide records of paleocean environment. Ferromanganese crusts can be used as a paleocean environment tracer. This paper mainly presents a review of the latest research of crust's depth-age dating, paleocean environment tracing with major elements, trace elements, and Sr,Nd and Pb istopes.