The controls of the palaeogeographic environments on manganese deposits in eastern Guizhou during the early Datangpoan (Nanhuan)
-
摘要: 贵州东部及邻区的南华纪沉积锰矿是我国重要的锰矿资源之一,具有较大的找矿潜力,但其成矿作用至今仍存在争议。本文在前人研究基础上,从古地理、古环境两方向分别介绍了贵州东部及邻区大塘坡早期古地理环境及其控矿作用的研究现状,总结了古地理环境在锰矿成矿过程中的控矿作用,认为古地理环境控制着锰矿的成矿物质来源、迁移富集、沉淀成矿成岩等过程。分析认为现阶段南华纪大塘坡早期古地理、古环境及其控矿作用研究的系统性、综合性仍显不足。在系统研究古地理、古环境的基础上,将古地理环境各因素置于统一的成矿环境体系中,综合考虑南华纪大塘坡早期古地理、古海洋环境、古生物、海平面变化、海底同生断裂及火山活动等因素的耦合作用,来探讨锰矿的古地理环境综合控矿作用,不失为一种可行的研究思路。Abstract: The Nanhuan sedimentary manganese deposits in eastern Guizhou and its adjacent areas are most important manganese resources of great exploration potential in China. Referenced to the previous results of research, the present paper gives a detailed overview of current states of research concerning the palaeogeographic environments and their controls on the manganese deposits in eastern Guizhou and its adjacent areas during the early Datangpoan (Nanhuan). The controls of the palaeogeographic environments on the manganese deposits are manifested in origin, migration and enrichment, precipitation, mineralization and diagenesis of the ore-forming matter, with the emphasis on palaeogeography, palaeo-oceanography, palaeontology, sea-level changes, submarine contemporaneous faults and volcanic activities in the study areas during the early Datangpoan.
-
计量
- 文章访问数: 81
- HTML全文浏览量: 0
- PDF下载量: 85
下载:
