| Review of the stable isotope geochemistry of Mesozoic igneous rocks and Cu-Au deposits along the middle-lower Yangtze Metallogenic Belt, China |
| Xiao-Yong Yang; Insung Lee
|
| 2011
|
| 发表期刊 | International Geology Review
 |
| 卷号 | 53期号:5-6页码:741-757 |
| 摘要 | Ore deposition took place in the Yangtze Valley episodically during the Jurassic and Cretaceous periods, generating approximately 200 polymetallic Cu-Fe-Au, Mo, Zn, Pb, and Ag deposits. We analysed the stable isotopes of sulphur, oxygen, and hydrogen from the Cu-Au deposits and correlated our new data with published stable isotope for associated Yanshanian (Mesozoic) igneous rocks. The latter bears a close relationship to Cu-Au mineralization in the area. Cu-Au deposits in the middle-lower Yangtze Valley can be divided into three types: skarn, porphyry, and volcanic. The S-O-H isotopic values allow constraints to be placed on the conditions of origin of these famous Cu-Au ores and their related igneous rocks. Sulphur from the sulphide ores mostly was derived from a magmatic source; however, a few deposits reflect a sedimentary source of sulphur. Oxygen isotope values in quartz from the Shaxi porphyry Cu-Au deposit and from the Tongling skarn Cu-Au deposits range from 2.6 parts per thousand to 12.5 parts per thousand and from -1.3 parts per thousand to 24.5 parts per thousand, respectively; these values represent larger variations compared with those from other Cu-Au deposits in this metallogenic belt. Hydrogen versus oxygen isotope plots of the Cu-Au ore-forming fluids demonstrate that the fluids came from different sources: the most important involved the mixing of magmatic and meteoric water; the second most important was strictly magmatic water; and the third most important may have been a mixture of formation water or meteoric water that had reacted with carbonate wall rocks. |
| 关键词 | Porphyry Cu-au Deposits
Stable Isotope Geochemistry
Sulphur
Hydrogen
Oxygen Isotopes
Middle-lower Yangtze Metallogenic Province
|
| 学科领域 | 矿床地球化学
|
| 收录类别 | SCI
|
| 语种 | 英语
|
| 文献类型 | 期刊论文
|
| 条目标识符 | http://ir.gyig.ac.cn/handle/352002/7063
|
| 专题 | 矿床地球化学国家重点实验室_矿床地球化学国家重点实验室_期刊论文
|
推荐引用方式
GB/T 7714 |
Xiao-Yong Yang,Insung Lee. Review of the stable isotope geochemistry of Mesozoic igneous rocks and Cu-Au deposits along the middle-lower Yangtze Metallogenic Belt, China[J]. International Geology Review,2011,53(5-6):741-757.
|
| APA |
Xiao-Yong Yang,&Insung Lee.(2011).Review of the stable isotope geochemistry of Mesozoic igneous rocks and Cu-Au deposits along the middle-lower Yangtze Metallogenic Belt, China.International Geology Review,53(5-6),741-757.
|
| MLA |
Xiao-Yong Yang,et al."Review of the stable isotope geochemistry of Mesozoic igneous rocks and Cu-Au deposits along the middle-lower Yangtze Metallogenic Belt, China".International Geology Review 53.5-6(2011):741-757.
|
|
文件名：
|
Review of the stable isotope geochemistry of Mesozoic igneous rocks and Cu-Au deposits along the middle-lower Yangtze Metallogenic Belt, China.pdf
|
|
格式：
|
Adobe PDF
|
此文件暂不支持浏览
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。
修改评论