| 张宝华,屈奋雄,张鹏程,刘如琦,王富春,郎福全,吴润友,王继孟.论韧性剪切带对金矿的控制规律[J].地质找矿论丛,1996,(1):8-17 |
| 论韧性剪切带对金矿的控制规律 |
| THE CONTROL OF DUCTILE SHEAR ZONES ON GOLD MINERALIZATION-AN EXAMPLE FROM BAIYUN GOLD DEPOSIT, LIAONING PROVINCE |
| 投稿时间：1995-11-22 修订日期：1996-01-01 |
| DOI：10.6053/j.issn.1001-1412.1996.1. 002 |
| 中文关键词: 韧性剪切带 韧脆性剪切带 控矿构造 褶皱透镜体 构造置换 |
| 英文关键词: |
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| 摘要点击次数: 1285 |
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| 中文摘要: |
| 本文以辽宁省白云金矿为例,阐述了韧性剪切带对金矿床生成与赋存的控制规律。与剪切带有关的金矿床往往产在第二阶段的韧脆性剪切带中,而第一阶段的韧性剪切带对金元素的充分聚集起重要作用。剪切带的多条平行排列、倾向上的陡缓变化和剪切滑动等特征就形成了韧性剪切带中金矿体呈多条带和透镜状断续分布的形式。 |
| 英文摘要: |
| Many geologists dealing with gold deposits usually put stress on the source of the orebearing liquid and the genesis of gold deposits as well as the relationships between the gold deposits and the metamorphism and magmatic activity. In fact the formation and distribution of many gold deposits are mainly controlled by the tectonics, particularly ductile shear zones.This paper takes Baiyun gold deposit as an example to demonstrate the controlling regularities of the ductile shear zones on formation and distribution of the gold deposits. The shear zones can usually be divided into three evolutional stages: the doctile stage, the ductile-brittle stage and the brittle stage. An deposit types are varied with the evolutional stages, for instance ductile stage control the formation of the disseminated ore.The ductile shear zones control the distribution of the gold deposits both in horizontal and verticl directions ie. An ore bodies occur at regular distance in plan and irregular in profile. In other word there should be some orebodies in the deeper part when the upper gold orebodies taper out. Ore bodies in ductile shear zones are commonly lenses. Usually the ductile shear zones control the distribution of the mineralised zones. The S and C foliation in shear zones control the distribution of the orebodies of economic value.It is clear that both the ductile stage and ductile-brittle stage deformations contribute to the formation of gold deposits. The former brings the An element into the strong deformational ductile shear zones to form .the gold mineralization. The later makes An enrichment in The mineralization to form econonic Au deposit. |
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