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引用本文:宋才见,李谭伟,叶颖颖,姚伟,曾芳. 南岭地区千里山岩体的空间形态及其与成矿的关系[J]. 中国地质, 2020, 47(4): 998-1009.
SONG Caijian,LI Tanwei,YE Yingying,YAO Wei,ZENG Fang. Spatial morphology of Qianlishan rock mass and its relationship with mineralization in Nanling region[J]. Geology in China, 2020, 47(4): 998-1009(in Chinese with English abstract).
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南岭地区千里山岩体的空间形态及其与成矿的关系
宋才见, 李谭伟, 叶颖颖, 姚伟, 曾芳
湖南省地球物理地球化学勘查院, 湖南 长沙 410116
摘要:
千里山岩体是南岭地区与锡钨等矿产成矿关系密切的重要岩体,研究其空间特征与控矿作用,对于深部地质填图以及深部找矿预测具有重要意义。利用中比例尺重力资料,确定了千里山岩体的隐伏边界;通过对千里山岩体进行二维、三维模拟反演,揭示了千里山岩体与王仙岭岩体的连接关系和空间形态特征以及与围岩的接触关系。推断认为:千里山岩体与王仙岭岩体在深部相连,呈大岩基产出,并受到深大断裂控制;两岩体三维形态整体表现为气球膨胀式轮廓。结合地质资料,探讨了千里山岩体与成矿的关系,分析认为深部岩基和构造为矿床提供了成矿物质来源、热源及上升通道。
关键词:  重力低异常  岩体隐伏边界  岩体空间形态  深部岩基  成矿关系  地质调查工程  湖南
DOI:10.12029/gc20200407
分类号:P588.12+1
基金项目:中国地质调查局“湖南千里山—瑶岗仙地区1:5万区域地质综合调查”子项目(12120114033401)资助。
Spatial morphology of Qianlishan rock mass and its relationship with mineralization in Nanling region
SONG Caijian, LI Tanwei, YE Yingying, YAO Wei, ZENG Fang
Hunan Academy of Geophysical and Geochemical Exploration, Changsha 410116, Hunan, China
Abstract:
Qianlishan rock mass is an important rock mass closely related to tin and tungsten mineralization in Nanling region. Studying its spatial characteristics and ore-controlling role is of great significance for deep geological mapping and deep prospecting and prediction. Using medium-scale gravity data the authors determined the hidden boundary of Qianlishan rock mass. Two-dimensional and three-dimensional simulation inversion revealed the connection relationship between Qianlishan rock mass and Wangxianling rock mass, the spatial morphological characteristics and the contact relationship with surrounding rock masses. It is inferred that the Qianlishan rock mass and the Wangxianling rock mass are connected in depth, and were produced in a large basement and controlled by deep and large faults, with the three-dimensional shape of the two rock masses being balloon expansive contour as a whole. On the basis of geological data, the relationship between Qianlishan rock mass and mineralization was discussed. It is concluded that deep bedrock and structure provided ore-forming material source, heat source and ascending channel for the deposit.
Key words:  gravity low anomaly  hidden boundary of rock mass  spatial morphology of rock mass  deep bedrock  metallogenic relationship  geological survey engineering  Hunan Province