• 责任者：Chen Bo (Key Laboratory of Orogenic Belts and Crustal Evolution ; Ministry of Education ; School of Earth and Space Sciences ; Peking University ; Beijing 100871 ; China) ; Zhu Yongfeng
• 刊名：Geological Bulletin of China
• 出版年：2011
• 卷期：30(7)
• 关键词：尖晶石橄榄岩 ; spinel peridotite ; 新疆 ; Xinjiang
• 页码：p.1017-1026
• 图表：6 illus., 2 plates, 3 tables, 16 refs.
• 分类号：0801
• 出版序号：160
• issnNo：ISSN1671-2552
• isbnNo：CN11-4648/P

The ophiolitic mélange extensively developed in Karamay area consists of ultramafic lenses (mainly peridotite, pyroxenite), pillow-lava basalts and siliceous rocks. The peridotite in Baijiantan area consists of olivine, clinopyroxene, orthopyroxene and spinel, which are generally fresh. Previous studies suggested a fast uplifting more than 50 km without partial melting. This paper reports for the first time the discovery of mantle rocks in Baikouquan area, 35 km away from Baijiantan. Pyroxene in Baikouquan peridotite has been widely altered, but olivine and spinel remain relatively fresh. The mantle rock in Baikouquan has the same mineral assemblage as the mantle rocks in Baijiantan area.