| 建昌县大石沟金矿床特征及矿床模式 |
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| 引用本文： | 王和胜.建昌县大石沟金矿床特征及矿床模式[J].国土资源,1998(3). |
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| 作者姓名： | 王和胜 |
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| 作者单位： | 辽宁地质矿产研究院 |
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| 摘 要： | 建昌县大石沟金矿床与南大线金矿床相连，二者实为一个金矿床。矿床受控于大青山火山机构，在火山机构的南侧接触带及其附近的中侏罗统髫髻山组安山质火山岩中热液蚀变发育。蚀变有两种类型，即面性围岩蚀变和线性围岩蚀变，面性蚀变岩受接触带控制，线性蚀变岩受断裂构造或劈理（带）控制，前者控制了金矿床或矿化带，后者控制了金矿脉（带），这种控矿断裂或劈理（带）是大青山火山机构破火山口塌陷过程中形成的裂隙系统。依据矿床产出的地质背景、构造环境、矿床地质特征、地球化学特征等建立了矿床模式，以利于今后的成矿预测和资源评价。
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| 关 键 词： | 大石沟 大青山 火山机构 金矿床 矿床特征 矿床模式 |
THE CHARACTERISTICS AND MODEL OF DASHIGOU GOLD DEPOSIT IN JIANCHANG COUNTRY |
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| Wang Hesheng.THE CHARACTERISTICS AND MODEL OF DASHIGOU GOLD DEPOSIT IN JIANCHANG COUNTRY[J].Land & Resources,1998(3). |
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| Authors: | Wang Hesheng |
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| Abstract: | Dashigou gold deposit in Jianchang is linked with Nandaxian gold deposit.In fact, they belong to the same ore deposit.It was controled by the Daqingshan volcanic apparatus. Hydrothermal alteration occured in andesitic volcanic rocks ofTiaojishan F.,Mid Jurassic series in and nearby the south contact zone of the volcanic apparatus, which there were two kinds of alteration:areal and linear wallrock alteration. Areal altered rocks were controlled by the contact zone,but linear altered rocks by fracture structures or cleavages (belts).At the same time,areal wallrock alteration controlled the gold deposit or the metallogenic zone,linear wallrock alteration controlled the gold veins(or belts). The ore controlling fractures and cleavages(belts) are a fissure system,which formed during the collapsing of the caldera of Daqingshan volcanic apparatus. On the basis of geological background, structural environment, geological and geochemical characteristics of the deposit, mineralizating process is discussed and the model of the deposit is constructed for the metallogenic prognosis and resouces judgment in the future. |
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| Keywords: | Dashigou Daqingshan volcanic apparatus gold deposit deposit characteristics deposit model |
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