Sources of Ore-Forming Substance of Carlin-Type Gold Deposit: A Discussion Based on the Characteristics of Regional Stratigraphic Geochemical Evolution in “Gold-Triangle” Area of Yunnan , Guizhou , Guangxi Provinces
详细信息
- 责任者：Zhou Yuguo (School of Geoscience and Environmental Engineering ; Central-South University ; Changsha 410083 ; China) ; Liu Jishun
- 刊名：Earth Science Frontiers
- 出版年：2009
- 卷期：16(2)
- 关键词：卡林型金矿床 ; Carlin-type gold deposit ; 地球化学块体 ; geochemical blocks ; 云南 ; Yunnan Province
- 页码：p.199-208
- 图表：3 illus., 1 table, 34 refs.
- 分类号：1500
- issnNo：ISSN1005-2321
- isbnNo：CN11-3370/P
摘要
///This study selected the Yunnan-Guizhou-Guangxi Region (E 103°110°, N 22°26°), an area of about 200 000 km 2, as the study object to discuss the relationship between the regional stratigraphic geochemical characteristics and the metallogeny based on the stream sedimentary data from 34 map sheets (1:200 000 scale). The authors come to the following conclusions: 1) compared with South China, there are geochemical blocks of arsenic, antimony, gold, mercury and other low-temperature elements in this area, with deep derived gold, and high background value of arsenic, antimony and mercury; 2) the formation of the high background level of siderophile elements, oxides and mineralizer which are related to basic magmatic activities is the geochemical reflection of the extravasation accompanying the formation of the Youjiang rift valley, the Funing-Guanling north-south strike fault zone, the Wenshan-Funing trust nappe structure and especially the E’mei mantle plume, arising from the magmatic eruption and turbidite volcaniclastic sedimentary geochemistry; 3) the eruption of Permian E’meishan basalt in Southwest Guizhou resulted in the abrupt change of gold and a large number of siderophile elements in Permian and Triassic deposits; and 4) the source substance of Carlin-type gold in “Golden Triangle” of Yunnan, Guizhou, Guangxi Area was related to the rift valley, Tethys and regional deep fault and the deposit of basic igneous rocks and pyroclastic turbidite accompanying the activity of the E’mei mantle plume