化工矿产地质2024，Vol.46Issue(2)：107-114,8.
贵州遵义沙坝沟地区茅口组硅质岩-粘土岩沉积建造成因研究
Study on the Genesis of Sedimentary Formation of Silicalite-Claystone of Maokou Group in the Shabagou Area of Zunyi,Guizhou Province
摘要
Abstract
A special sedimentary formation of silicalite-claystone occurs in the middle-upper part of the Maokou group of the Middle Permian in Zunyi county,Guizhou has important indicative significance for regional sedimentation,tectonics and paleogeographic evolution.This paper studies the sedimentary formation of the middle-upper part of the Maokou group in the Middle Permian in Shabagou area,Zunyi county.The material source and genesis of silicalite and claystone are analyzed by field profile observation,and petrology and mineralogy and geochemical means.The silicalite-claystone sedimentary formation is characterized by thick layer-block,brecciated,banded or vesicular structures.Combined with the characteristics of the trace elements and rare earth elements,it is believed that the silicalite-claystone sedimentary formation is formed in an oxidation environment on the continental margin.The silicalites are typical of genesis of hydrothermal sediment,and the claystones are a mixture of hydrothermal components and terrigenous components,which is significantly related to the mantle plume activity in the mid-late Maokou period of the Middle Permian.关键词
硅质岩/粘土岩/茅口组/成因/遵义地区Key words
Silicalite/Claystone/Maokou Formation/Genesis/Zunyi county分类
天文与地球科学引用本文复制引用
张露,刘坤,程玛莉,张俊杰..贵州遵义沙坝沟地区茅口组硅质岩-粘土岩沉积建造成因研究[J].化工矿产地质,2024,46(2):107-114,8.基金项目
黔科合基础 贵州二叠系锰矿控矿因素及成因研究(编号:[2016]1404)、黔科合基础 地幔柱活动对贵州二叠系锰成矿作用影响(编号:[2020]1Y160)、黔教合资金项目 遵义地区锰成矿作用与"硅质岩"关系研究(编号:KY字[2018]224)、贵州理工学院高层次人才启动经费晚二叠世构造事件对水城-遵义成锰作用的约束(编号:XJGC20190612) （编号:[2016]1404）
