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黔湘渝毗邻区南华纪“大塘坡式”锰矿是我国最重要的锰资源基地,现已发现沉积型菱锰矿上亿吨,占全国已探明锰矿资源量的50%左右.通过对南华纪地层系统和地层分区的研究,提出在Rodinia超大陆裂解背景下,南华裂谷盆地(I级)西段分别由武陵、雪峰次级裂谷盆地和其间的天柱-怀化隆起(地垒)3个Ⅱ级构造单元构成.武陵次级裂谷盆地控制形成了黔渝湘毗邻区锰矿成矿带,内部由3个Ⅲ级断陷(地堑)盆地、2个Ⅲ级隆起(地垒)和至少16个Ⅳ级断陷(地堑)盆地组成.3个Ⅲ级断陷(地堑)盆地分别控制形成了松桃-古丈、玉屏-芷江以及溪口-小茶园锰矿成矿亚带.其中,松桃-古丈锰矿成矿亚带是武陵次级裂谷盆地的裂陷中心,锰矿成矿作用强烈,形成的锰矿资源量巨大,已成为世界级锰矿资源富集区之一.Ⅳ断陷(地堑)盆地则控制形成研究区各锰矿床;提出南华纪早期同沉积断层是锰矿床形成的前提,并识别恢复出研究区15条同沉积断层及所控制形成的断陷(地堑)盆地和主要锰矿床.同沉积断层不但是深部锰质和古天然气上升的通道,更是连接古天然气渗漏沉积型锰矿成矿系统中地内系统与表层系统的纽带.
Qiaoxiangyu adjacent area South China discipline “Datang slope type ” manganese ore is China’s most important manganese resource base, has been found on the deposit type rhodochrosite hundreds of millions of tons, accounting for about 50% of the country’s proven manganese resources by Based on the study of South China stratigraphic system and stratigraphic division, it is proposed that in the background of the Rodinia supercontinent, the western segment of the South China Rift Basin (Grade I) consists of the Wuling and Xuefeng secondary rift basins and the Tianzhu-Huaihua Uplift Basement), and three Ⅱ-level tectonic units.The Wuling secondary rift basin controlled the formation of the manganese ore zone in the adjacent area of Guizhou-Yuxiang region, and the interior is composed of three Ⅲ-level fault-graben basins and two Ⅲ-level uplift Basement) and at least 16 Ⅳ grade fault (graben) basins, and three Grade Ⅲ fault (graben) basins controlled the formation of Songtao-Guzhang, Yuping-Zhijiang and Xikou-Xiaocen Manganese ore The mineralization subband of Songtao-Guzhang manganese ore is the rifting center of Wuling secondary rift basin. The mineralization of manganese ore is strong and the amount of manganese ore formed is huge. It has become a world-class manganese ore resource enrichment Ⅳ. Fault (Graben) basins control the formation of various manganese deposits in the study area. It is proposed that the synsedimentary fault in the Nanhua period is manganese And the formation of the deposit, and identify the recovery of the study area 15 co-sedimentary faults and controlled by the formation of fault (graben) basin and the main manganese deposits.Discrete sedimentary fault is not only deep manganese and pale gas up the channel, but also Connect the ancient natural gas leakage sedimentary manganese ore mineralization system in the system and the surface layer system of the bond.