Petrogenesis of the Olivine Gabbronorite in Pobei Complex, Northeast Tarim Plate

详细信息   

• 责任者：Guo Naxin (College of Earth Science and Resources ; Chang’an University ; Xi’an 710054 ; China) ; Jiang Changyi
• 刊名：Geological Review
• 出版年：2012
• 卷期：58(5)
• 关键词：辉长苏长岩 ; gabbronorite ; 塔里木盆地 ; Tarim Basin
• 页码：p.873-886
• 图表：6 illus., 3 tables, 42 refs.
• 分类号：0801
• issnNo：ISSN0371-5736
• isbnNo：CN11-1952/P

摘要

The Pobei complex, which is located in the northeast Tarim Plate, is composed of intrusions of 5 stages. The olivine gabbronorite intrusions,which formed during the second stage of the magmatism, are mainly composed of olivine gabbronorites. In some places, there are fragmentary gabbronorites or anorthosites. All the rocks are calc-alkalic series, while the composition of clinopyroxenes shows that the parent magma is tholeiitic. The transformations of magmatic evolution and rock chemical series are attributed to contamination. All these factors make it impossible for the olivine gabbronorite intrusions to form Cu—Ni sulfide deposit.