邓自贤,李欣文,刘峰, 肖旭华,王宇翔

文章编号：1672-5603（2020）02-05-5

摘 要 邵东铅锌矿区位于清水塘铅锌矿田东外围，地处贑湘桂上古台坳与湘中加里东坳陷的交汇部位，矿区地层为角度不整合的二元结构，铅锌矿体赋存于寒武系下统（∈1）地层的不整合面之上，受寒武系中上统（∈2+3）浅变质细碎屑岩与碳酸盐岩地层控制，具有典型的热水沉积特征。本文是在野外调研和分析总结前人成果的基础上，针对矿区边深部找矿而开展的新探讨。

关键词 邵东县;铅锌矿;热水沉积 ;地质特征

中图分类号：P618.4 文献标识码：A

Hydrothermal Sedimentary Characteristics of Shaodong lead-zinc Mine， Hunan Province

Deng Zixian1 ，  Li Xinwen1 ，  Liu Feng2，  Xiao Xuhua1，  Wang Yuxiang1

（1.The 303rd brigade of Hunan Nuclear Geology Bureau，  Changsha Hunan 410119; 2. Anhua County Natural Resources Bureau， Anhua Hunan  413500）

Abstract： Shaodong lead-zinc mine is located in the East periphery of Qingshuitang lead-zinc mine field， at the intersection of the upper paleotai depression in Jiangxi-Hunan-Guangxi and the Caledonian depression in central Hunan. The strata in the mine area are of angular unconformity binary structures. The lead-zinc ore bodies are located on the unconformity surface of the lower Cambrian （∈1） strata and controlled by the Cambrian system in middle and upper （∈2+3） shallow metamorphic fine clastic rock and carbonate rock strata， which are typical hydrothermal sedimentary characteristics. On the basis of field investigation， analysis and summary of previous achievements， this paper is a new discussion on the exploration of the deep side of the metallogenic area.

Keywords： Shaodong county; lead-zinc mine; hydrotheral deposition; geological characteristics

邵东铅锌矿区位于清水塘铅锌矿田东外围，邵东、衡阳、祁东三县交界处，行政隶属灵官殿镇和石株桥乡管辖。矿区包括金华山、马鞍山、小山头、耳石岭、新坑里、茶果山等六个矿段。

1 区域地质背景

矿区大地构造位置为贑湘桂上古台坳与湘中加里东坳陷的交汇部位、湘桂加里东复式向斜的北东部。区内NNE向和SE向构造发育，褶皱和断层相互叠加，形迹清晰。矿区地层为不整合的二元结构。

基底地層为前泥盆系一套地槽型重力流—滨浅海相碎屑岩—碳酸盐岩沉积建造，盖层为早古生界一套地台型陆棚滞流盆地相的复理石复陆屑—碎屑浊积沉积建造。铅锌矿产于角度不整合面之上的碳酸盐岩地层中。

上覆关帝庙花岗岩为印支期侵入的酸性岩体，呈岩基产出。

2 矿区地质

2.1 地层

矿区出露的地层大部分隐伏于花岗岩之下，主要有震旦系上统、寒武系、奥陶系下统和第四系（图1）。……