冀东地区元古宙多金属硫铁矿矿床地质及其成矿作用

GEOLOGY AND MINERALIZATION OF PROTEROZOIC POLYMETALLIC PYRITE DEPOSITS IN EAST HEBEI

通过对冀东地区元古宙多金属硫铁矿床成矿构造环境背景、喷气沉积岩地球化学以及矿床中大量矿化嗜热微生物的发现与研究 ,以及采用分子生物学对沉积记录中的生物标志物的研究。得知冀东地区多金属硫铁矿的形成主要由海底喷气沉积与嗜热微生物富集成矿作用所致。运用海底喷气成矿热流体活动 嗜热微生物吸附与新陈代谢 多金属硫铁矿床形成的成矿理论 ,指导该区硫铁矿找矿工作已见成效。

Studies of the metallogenic structures and exhalation sedimentary rocks, coupled with discovery of the ore helping, thermophilous microorganisms and identification of the organic marks in the sedimentary records with a method of molecular biology, fully confirm that the molymetallic pyrite deposits in East Hebei have a genetic tie with ore helping of warm addicting microorganisms as well as with submarine hot water sedimentation. According to this confirmation, a metallogenic theory on circulation of exhalative thermal fluids, absorption of thermophilors microorganisms and mineralization of polymetallic pyrite was proposed, guiding the exploration for pyrite deposits in the area.