摘要
对西藏江孜县沙拉岗锑 (金 )矿区的沉积相进行了划分 ,并重点阐述了颇具特色的各种重力流沉积 (滑动沉积、碎屑流沉积、浊流沉积 ) ,为分析研究锑 (金 )成矿作用提供了丰富的基础资料。
Sedimentary facies is firstly divided in the Shalagang Sb(Au) mining area, and all kinds of characteristic gravity flow sediments, for example, slide, debris flow and turbidity deposits, are significantly documented. The well known gravity flow sediments were formed by the debris, slide and turbidity flows in the Late Jurassic Early Cretaceous, which consisted of the slope clastic rocks and interbeds of siliceous rocks and limestones. The lithofacies assemblages of the upper slope, lower slope and submarine fan emerged in the slope. The upper slope was characterized by kinds of sliding sediments and the lower slope by debris flow sediments . The submarine fan can be divided into progressive and regressive sequences, which are composed of sandstone bodies formed by turbidity flow. They provide abundant informations of sedimentary geology for analysing Sb(Au) mineralization in the Shalagang mining area.
出处
《成都理工学院学报》
CAS
CSCD
北大核心
2001年第2期187-190,共4页
Journal of Chengdu University of Technology
基金
西藏自治区科委重点科技项目!(990 10 7)
西藏自治区地矿厅重点研究项目
