Study on Coupling between Yanshannian Tectonic Thermal Events and Gold Mineralization in Jiaodong Ore Concentrating Area in Shandong Province
详细信息
- 责任者：Yu Xuefeng (Key Laboratory of Geological Processes for Mineralization of Metal Minerals and Resources Utilization in Shandong Province ; Key Laboratory of Gold Mineralization Processes and Resources Utilization Subordinated ; Ministry of Land and Resources ; Shandong Institute and Laboratory of Geological Sciences ; Jinan 250013 ; China) ; Li Hongkui
- 刊名：Acta Geologica Sinica
- 出版年：2012
- 卷期：86(12)
- 关键词：构造热事件 ; tectonic thermal event ; 金矿 ; gold ores ; 山东 ; Shandong Province
- 页码：p.1946-1956
- 图表：5 illus., 1 table, 39 refs.
- 分类号：1001,0300
- issnNo：ISSN0001-5717
- isbnNo：CN11-1951/P
摘要
///In this paper, based on collecting 71 groups of SHRIMP U-Pb zircon age datas, a chronological frame pattern of Yanshanian granites had been put forward: Linglong-Kunyushan granite emplacement was in in 160～150 Ma; the formation of Guojialing granodiorite was in 130～126 Ma; Weideshan granodiorite-granite emplacement was in 120～110 Ma; Laoshan A-type miarolitic cavity parlkaline alkali feldspar granite emplacement was in 110～100 Ma and represented the end of Yanshan movement. Gold mineralization in three periods in this area (150 Ma, 120～110 Ma, 100～90 Ma) had coupled relation with Linglong-Kunyushan granite, Guojialing granodiorite and Weideshan granodiorite-granite. Jiaodong tectonic-magmatic events and gold mineralization were controlled by the interactions among Tethyan tectonic domain, Paleo-ocean tectonic domain and the Pacific tectonic domain. The dynamics background of gold ore-forming was the transition of Mesozoic tectonic system and the lithosphere thinning, which was formed by the subduction of the Pacific plate toward the North China Plate.