Geochemistry Characteristics and Tectonic Significance of Diabase Dikes in Halaqi Region, Xinjiang
详细信息
- 责任者：Chen Daixin (Institute of Land Resources and High Techniques ; School of Earth Sciences and Resources ; China University of Geosciences ; Beijing 100083 ; China) ; Sun Jungang
- 刊名：Northwestern Geology
- 出版年：2013
- 卷期：46(4)
- 关键词：辉绿岩 ; diabase ; 新疆 ; Xinjiang
- 页码：p.81-92
- 图表：14 illus., 3 tables, 43 refs.
- 分类号：0801
- issnNo：ISSN1009-6248
- isbnNo：CN61-1149/P
摘要
The outcrop of diabase dikes in Halaqi of Xinjiang has provided important information for tectonic evolution of southwest Tianshan area. The diabase dikes in Halaqi area lack HFSE （Nb, Ta） and HREE （Yb, Y）, and exhibit enrichment in LILE （Ba, St, K） and LREE （La, Ce）. With the geochemical characteristics of depleted mantle, it can be understood as the mantle was transformed by subduction in plate subduction, indicating that during the Late Carboniferous-Early Permian, the region should have been in the island arc environment.