The Query on the Source Bed and the Sources of Metallogenic Materials
详细信息
- 责任者：Li Ruifeng (The Fourth Geological Team ; Metallurgical and Geological Exploration Bureau of North China ; Qinhuangdao 066013 ; China) ; Liu Xiaobin
- 刊名：Jilin Geology
- 出版年：2013
- 卷期：32(1)
- 关键词：矿源层 ; source beds ; 成矿物质来源 ; source of ore material
- 页码：p.20-25,31
- 图表：12 refs.
- 分类号：1001
- issnNo：ISSN1001-2427
- isbnNo：CN22-1099/P
摘要
The basic concept of the "source bed" is strata or rocks with plentiful metallogenic materials of one or more.The metallogenic materials of deposits come from source bed predominately;I think that the metallogenic materials in the magmatic rock are activated,removed and precipitated to form ore when the magmatic rock was emplacement.The mineral-forming theory of the "source bed"has been accepted and quoted by the most geologists,it has been quoted in the geologic documents and papers.We think that the strata and rock with rich in merallogenic materials are facts.But the principle of extracting metallogenic materials from the "source bed"need discussed further,that is,during the metallogenic materials activating and removing,why were metallogenic materials removed from low-temperature to high-temperature site? Why were they removed from low-pressure to high-pressure site? Why were they removed from low-concentration to high-concentration site? And why did "source bed" that was extracted not occur hydrothermal alteration? This paper gives an example illustration that Fe,Au and Pb,Zn deposits have undergone hydrothermal activities many times for over 2 000 million in eastern Hebei,they haven’t taken place activation,removal and enrichment to form new ore body.The primary feature still was preserved.It proved that it is impossible to extract metallogenic materials from wall-rock(source bed),remove,accumulate and form new ore body.The author put forward that metallogenic materials come from magma in deep of the earth crust,magmatic hydrothermal solution is main source of metallogenic materials.
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