条带状铁建造(BIF)是早前寒武纪特殊环境的产物,记录了当时地壳演化、大气、海洋和生物等方面的重要信息(Bekker et al.,2010)。同时,BIF形成高潮与地壳增生、地幔柱活动和VMS矿床的峰期存在对应关系(Isley and Abbott,1999;Rasmussen et al.,2012)。其原因可能是早前寒武纪地壳快速生长、镁铁质-超镁铁质岩浆广泛发育、海底火山-热液大规模活动,为海洋中溶解-沉淀巨量BIF铁矿提供了物质来源和环 The banded iron construction (BIF) was a product of a particular Precambrian environment that captured important information about the current crustal evolution, atmosphere, oceans, and biology (Bekker et al., 2010). At the same time, the climax of BIF has been correlated with the crustal hyperplasia, mantle plume activity and the peak period of VMS deposits (Isley and Abbott, 1999; Rasmussen et al., 2012). This may be due to the rapid growth of the Early Precambrian crust, the extensive development of mafic-ultramafic magmas and the large-scale volcanic-hydrothermal activity of the seabed, providing a source of material for dissolving and precipitating large amounts of BIF iron ore in the oceans ring