中国地质2016，Vol.43Issue(6)：2173-2191,19.DOI:10.12029/gc20160525
黔北大竹园地区铝土矿含矿岩系沉积环境及形成机制
The sedimentary environment and formation mechanism of bauxite-bearing rock series in Dazhuyuan area, northern Guizhou Province
刘平 1廖友常 1张雅静1
作者信息
- 1. 贵州省地质矿产勘查开发局106地质大队，贵州遵义563000
- 折叠
摘要
Abstract
The lithostratigraphy of the bauxite-bearing rock series of Dazhuyuan area in northern Guizhou is the upper Carboniferous Dazhuyuan Formation, which was deposited in Zhuoshui Lake in the late Carboniferous Maping stage. The lake was one of the offshore lakes in the southwest of Yu’e Bay. In the period of the early Dazhuyuan Formation, the high water lake with the area of 480 km2 was close to the coastline of Yu’e Bay. Sediments were mainly derived from the chemical deposition in the permanent low-energy shallow lake. It deposited amounts of chlorite rock, chlorite clay rock, ferruginous clay rock and a small amount of chamosite iron, hematite. In the period of the late Dazhuyuan Formation, the lake with the area of 288 km2 became shallow and small because of the augmenting of the distance between the lake and the coastline of Yu’e Bay. Then the lake became an intermittent flood control high-energy shallow lake. Huge areas of bauxite (bauxite rock) was deposited from the physical deposition.关键词
铝土矿含矿岩系/大竹园组/沉积环境/形成机制/大竹园地区/黔北Key words
bauxite-bearing rock series/Dazhuyuan Formation/sedimentary environment/formation mechanism/Dazhuyuan area/northern Guizhou分类
天文与地球科学引用本文复制引用
刘平,廖友常,张雅静..黔北大竹园地区铝土矿含矿岩系沉积环境及形成机制[J].中国地质,2016,43(6):2173-2191,19.
