前寒武纪系岩系的

基本解释 (translations)

Keewatin

与前寒武纪系岩系的相关的网络例句 [注：此内容来源于网络，仅供参考]

It was thought that the mast important Fe sources occur in Precambrian BIFs. BIFs and ferruginous rock series in them contain abundant usable Au, Cu, Zn, Co and PGEs elements.

前寒武纪条带状铁建造中拥有全球最重要的铁矿资源，BIFs中以及包括BIFs在内的含铁岩系还含有丰富的金、铜、锌、钴、铂族等有用元素。

It was concluded that a noble and base metal metaflogenic series was composed of the inner part of BIFs and ferruginous rock series. And mantle plume had close spatio-temporal and genetic relationships with BIFs. In anoxic environment in Precambrian, the anaerobic bacteria would provide oxygen for ferruginous deposition during photosynthesis.

认为BIFs内部以及包括BIFs在内的含铁岩系均构成贱、贵金属成矿系列；地幔柱与BIFs之间存在密切的时、空和成因联系；在早前寒武纪缺权的环境下，厌氧的细菌类生物通过光合作用为BIFs中铁质沉淀提供了氧。

The feature of earth chemistry of volcanic rock in Xiangshan Group reflects that it belongs to the series of oceanic tholeiite in oceanic spreading tectonic environment.

结果 香山群的时代划归为中晚寒武世较合适；香山群主体是一套由板岩、细、粉砂岩和砂岩组成的浊积岩系，其砂岩类型主要是长石石英砂岩、细粒石英砂岩和粉砂质石英砂岩，前寒武纪变沉积岩和花岗片麻岩为主要碎屑来源和物源区组成；砂岩的岩石地球化学特征指示香山群属发育在被动大陆边缘斜坡环境中的沉积物，火山岩岩石地球化学特征反映其应属大洋扩张构造环境下的大洋拉斑玄武岩系列。

MtTaishan has abundant geologic remains, especially famed for its Early Precambriangeological evolution, Neotectonic Movementand and palaeontological fossils, etc. It isa natural geological museum with gigantic geological value.

公园地质遗迹景观丰富，尤其在早前寒武纪侵入岩、寒武系标准剖面、新构造运动与地貌、古生物化石遗迹等方面，都具有全国和世界意义的巨大地学价值，是一个天然的地学博物馆。