Organic geochemistry characteristics of yangshan super-large gold deposit, gansu province.
文献类型：期刊论文
| 作者 | Qin Yan1; Zhou ZhenJu1,2 |
| 刊名 | Acta petrologica sinica
 |
| 出版日期 | 2009-11-01 |
| 卷号 | 25期号:11页码:2801-2810 |
| 关键词 | Yangshan gold deposit Organic geochemistry Biomarkers Organic matter |
| ISSN号 | 1000-0569 |
| 通讯作者 | Qin yan(qinyan@gig.ac.cn) |
| 英文摘要 | The yangshan gold deposit, wenxian county, gansu province, is the china's largest carlin-like gold deposit hosted in the devonian carbonaceous-siliceous-argillaceous sediments. the yangshan gold field develops with lots of carbonaceous phyllites which contain abundant organic carbon. in this paper we insight the biomarkers of soluble organic matter, the source and maturity of organic matter, and the type and carbon isotope composition of kerogen of the ores and country rocks. the organic geochemistry of the yangshan gold deposit and the relationship between organic matter and mineralization are discussed. the organic matter in the strata was mainly sourced from bacteria and algae which were involved in mineralization. the biomarker compound parameters and atomic ratios of h/c and o/c indicate that the organic matter was highly matured, possibly up to anthracitic phase. ch(4) and c(2)h(6) generated from thermal pyrolysis of organic matter input the ore-fluids and contributed to gold mineralization. organism and organic matter played a role in primary enrichment of gold in the ore-hosting strata in which framboidal pyrite has been recognized. the gold contents do not show obvious correlations with either the contents of organic carbon or the type of organic matter, which means that the organic matter had little influence on hydrothermal gold mineralization, but possibly involved in pre-ore enrichment and hydrothermal transport of gold. |
| WOS关键词 | ISOTOPE GEOCHEMISTRY ; LIAONING PROVINCE ; QINLING OROGEN ; CHINA ; FLUID ; MECHANISM ; GENESIS ; CARLIN ; BELT ; SR |
| WOS研究方向 | Geology |
| WOS类目 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000273455000010 |
| 出版者 | SCIENCE PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2394556 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Qin Yan |
| 作者单位 | 1.Chinese Acad Sci, Guangzhou Inst Geochem, Key Lab Metallogen Dynam, Guangzhou 510640, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Qin Yan,Zhou ZhenJu. Organic geochemistry characteristics of yangshan super-large gold deposit, gansu province.[J]. Acta petrologica sinica,2009,25(11):2801-2810. |
| APA | Qin Yan,&Zhou ZhenJu.(2009).Organic geochemistry characteristics of yangshan super-large gold deposit, gansu province..Acta petrologica sinica,25(11),2801-2810. |
| MLA | Qin Yan,et al."Organic geochemistry characteristics of yangshan super-large gold deposit, gansu province.".Acta petrologica sinica 25.11(2009):2801-2810. |
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来源：中国科学院大学
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