古代热水沉积成矿中的生物有机分子环境指标研究

Qinling Mountain is an important metallic ore-forming belt.It is a place to study ancient hydrothermal process, because the hydrothermal chert is the comparative advantage rock preserving organic molecules.The project studied the organic matter,the compose of organic molecules and environmental indexs and the ore-forming process about organism-organic matter-fluid in copper,lead, zinc,silver and gold in three deposit fields such as Xicheng,Fengtai and Zhashan. The studies show that：⑴ the organic matter and the compose of organic molecular marks in three ore fields have comparability and difference; ⑵ some organic molecules and parameters of biomarks can be distinguishing signs about hydrothermal deposit. ⑶ the contents of organic matter and the ratio of organic molecules relate strongly with metallic elements.⑷The simulating experiments on mineralization of organism, organic material and fluid show more that organism and organic fluid play an important role in forming deposits of copper,lead, zinc,silver and gold

通过对秦岭典型热水沉积矿床中热水成积岩的生物有机地球化学的研究，对比现代热水沉积物和正常沉积岩的生物地球化学，结合热水和常温环境生物生化成分特征及变化，来探讨代表热水成岩成矿环境的生物有机分子指标，丰富热水成矿作用的新材料、新内容；并从分子水平上来分析在热水环境中有利于成矿的生物有机分子指标，发展和完善生物成矿理论。