Lithogeochemistry and Petrogenesis of Huangshan Intrusion, East Tianshan , Xinjiang
详细信息
- 责任者：Chen Bo (College of Earth Science and Land Recourses ; Chang’an University ; Xi’an 710054 ; China) ; Xia Mingzhe
- 刊名：Journal of Mineralogy and Petrology
- 出版年：2011
- 卷期：31(1)
- 关键词：超镁铁质岩 ; ultramafics ; 岩石地球化学 ; lithogeochemistry ; 天山 ; Tianshan Mountains
- 页码：p.11-21
- 图表：11 illus., 5 tables, 32 refs.
- 分类号：0801
- 出版序号：20120135
- issnNo：ISSN1001-6872
- isbnNo：CN51-1143/TD
摘要
Controlled by the Kangurtag-Huangshan ductile sheer zone, the Huangshan intrusion is located in the central segment of Tudun-Huangshan-Tulaergen mafic-ultramafic rock belt, the northern section of the East Tianshan. The intrusion is characteristic of tholeiitic series and composed of peridotite, olivine pyroxenites, lherzolite, olivine gabbronorite, gabbros and gabbros-diorite. Petrographic and lithogeochemical analysis suggests that the magma was experienced fractional crystallization of olivine, orthopyroxene, clinopyroxene and plagioclase and was subjected to crust assimilation contamination to a certain extent in the late stages of magmatic evolution. Characters of element geochemistry and Nb, Sr, Pb isotope shows that the magma source is composed of asthenosphere components combined with enriched lithospheric mantle.
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