地质科技情报2013，Vol.32Issue(1)：46-51,6.
黔北务正道地区铝土矿形成环境的古盐度识别
Analysis On Paleosalinity of Sedimentary Environment of Bauxite in Wuchuan-Zheng'an-Daozhen Area, Northern Guizhou Province
摘要
Abstract
Through research on the element B, Sr, Ba, V, Zr and biomarkers of bauxite in Wuchuan-Zheng'an-Daozhen area of northern Guizhou Province, we concluded that sedimentary of the bauxite was influenced by ocean and the bauxite was mainly deposited in brackish water and fresh water. The sedimentary environment of the bauxite was a partly closed bay which frequently suffered transgression. Fresh water of the partly closed bay changed into brackish water or salt water accompanying transgression. Then fresh water from land decreasing the paleosalinity of the bay, range and degree of the desalination event was controlled by desalination time. The water which had already been desalinated experienced desalination event again, paleosalinity shifting among fresh water and brackish water or salt water.关键词
务正道地区/铝土矿/古盐度/沉积环境Key words
Wuchuan-Zheng'an-Daozhen area/ bauxite/ paleosalinity/ sedimentary environment分类
天文与地球科学引用本文复制引用
崔滔,焦养泉,杜远生,余文超,计波,雷志远,翁申富,金中国,和秀林..黔北务正道地区铝土矿形成环境的古盐度识别[J].地质科技情报,2013,32(1):46-51,6.基金项目
贵州省地勘基金项目"贵州务正道地区铝土矿基础地质与成矿规律研究" （）
