| 黑龙江省漠河推覆构造特征及其与金成矿的关系 |
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| 引用本文： | 王晓勇,梁海军,金同和,杨吉波,怀宝峰.黑龙江省漠河推覆构造特征及其与金成矿的关系[J].大地构造与成矿学,2008,32(2):218-225. |
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| 作者姓名： | 王晓勇 梁海军 金同和 杨吉波 怀宝峰 |
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| 作者单位： | 1. 武警黄金第三支队,黑龙江,哈尔滨,150086
2. 武警黄金第一总队,黑龙江,哈尔滨,150086 |
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| 摘 要： | 漠河推覆构造发育于上黑龙江盆地的北西部,是漠河地区的主要构造样式,形成于晚侏罗世-早白垩世之间。推覆方向总体由NW向SE,具有前展式的扩展方式。推覆构造在空间上由一系列近平行排列的逆冲断层组成,剖面上表现为犁式逆冲断裂所构成的单冲式叠瓦状构造,按其变形变质特征可划分为6条构造分带。漠河推覆构造对上黑龙江盆地金矿床的时、空分布具有明显的控制作用,其中砂宝斯金矿床受控于推覆构造脆性断裂破碎带,矿体产于构造界面之上的层间破碎带和SN向陡倾断裂破碎带中;老沟、砂宝斯林场金矿床受控于推覆构造韧性剪切带,矿体产于NE向脆性构造破碎带中。金矿床(点)主成矿期为早白垩世。综合研究漠河推覆构造的控矿特点,对该区实现新的找矿突破具有重要意义。
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| 关 键 词： | 推覆构造 控矿作用 金矿床 漠河 黑龙江省 |
| 文章编号： | 1001-1552(2008)02-0218-08 |
| 修稿时间： | 2007年8月13日 |
MOHE NAPPE STRUCTURE,HEILONGJIANG AND ITS CONTROL TO GOLD MINERALIZATION |
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| WANG Xiaoyong,LIANG Haijun,JIN Tonghe,YANG Jibo,HUAI Baofeng.MOHE NAPPE STRUCTURE,HEILONGJIANG AND ITS CONTROL TO GOLD MINERALIZATION[J].Geotectonica et Metallogenia,2008,32(2):218-225. |
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| Authors: | WANG Xiaoyong LIANG Haijun JIN Tonghe YANG Jibo HUAI Baofeng |
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| Abstract: | The Mohe nappe structure is developed on the northwestern upper Heilongjiang basin, it is the main structural style in the Mohe region, formed during the middle Late Jurassic and Early Cretaceous. It occurred under the S-N compressional tectonic setting, was closely related to the closure of the Mongolia-Okhotsk sea basin and collision orogeny of the Mongolia-Okhotsk belt to the north of this area. The thrusting is generally in NW to SE direction and with the pick-a-back extension pattern. The nappe structure is composed of a series of subparallel thrusts with a plough shape in the cross section, profile form for the plow-thrusts posed by the single-thrust imbricated structures.According to lithology, metamorphism and deformation characteristics of different nappes,it can be divided into six sub-tectonic belt. The Mohe nappe plays a significant role for metallic mineralization in the upper Heilongjiang basin, i.e., the Shabaosi gold deposit is controlled by the napping brittle fracture zones, the Laogou and Shabaosilinchuang gold deposit is controlled by the napping ductile shear zones. The main mineralization period of gold deposits (spots) is the Early Cretaceous. Comprehensive study on the Mohe nappe ore-controlling features is of great significance to the exploration of deposits in the area. |
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| Keywords: | Mohe nappe structure ore-control characteristic gold deposit Heilongjiang Province |
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