川滇黔接壤区石炭纪岩相古地理与铅锌矿关系分析

The Relationship Between Carboniferous Lithofacies Palaeogeography and the Sichuan-Yunnan-Guizhou Lead-Zinc Mine

川滇黔接壤区铅锌矿产主要分布在石炭系地层中,其中石炭系地层中的矿床数占已发现矿床的45.77%.通过研究可知,铅锌矿的赋矿层位主要为下石炭统摆佐组和大塘组和中石炭统黄龙群中.通过对本区石炭纪岩相古地理的分析可知,石炭系仍主要为海相稳定相的沉积.在矿源层形成过程中,生长断裂(同沉积断裂)起着重要作用,造成了铅锌矿产地及成型的铅锌矿床主要局限于凹陷带内,并受其控制,因此,沉积过程中铅锌矿的富集受到了古地理环境的影响很大.

The lead and zinc mineral resources in the contiguous area of Sichuan-Yunnan-Guizhou are mainly distributed in the carboniferous formation in which the number in the carboniferous strata deposits account for 45.77% of the ore deposits have been found. Through the work shows that lead-zinc mine mainly deposit in Lower Carboniferous Series Baizuo groups and Datang groups and in the Middle Carboniferous Series Huanglong groups. Based on the analysis of lithofacies palaeogeography of the carboniferous in this area is still in carboniferous for stable Marine sedimentary facies. In the process of formation of the sources,growth faults（synsedimentary faults） plays an important role in the lead-zinc deposit origin and forming of lead-zinc deposit is mainly confined to the hollow zone,and subject to be controlled,so the sedimentary lead-zinc mine in the process of enrichment is greatly influenced by ancient geographical environment.