Petrology of rodingite derived from eclogite in western Tianshan, China

doi:10.1111/j.1525-1314.2007.00700.x

CORC > 北京大学 > 地球与空间科学学院

	Petrology of rodingite derived from eclogite in western Tianshan, China
	Li, X-P. ; Zhang, L. ; Wei, C. ; Ai, Y. ; Chen, J.
刊名	journal of metamorphic geology
	2007
关键词	rodingite eclogite subduction zone western Tianshan China HIGH-PRESSURE METAMORPHISM ZERMATT-SAAS OPHIOLITE P-T PATH TIEN-SHAN NW CHINA TECTONIC IMPLICATIONS FACIES METAMORPHISM ULTRAMAFIC ROCKS LOWER SILESIA CENTRAL-ASIA
DOI	10.1111/j.1525-1314.2007.00700.x
英文摘要	This study reports a new rodingite type which was derived from eclogite enclosed in the ultramafic rocks of Changawuzi ophiolites, western Tianshan, China. Based on petrographical investigations, rodingite, partial rodingitized rock and completely rodingitized rock are characterized in this paper. These rocks show a continuous variation in their bulk compositions, mineralogy and their textural properties from eclogite to rodingite. The completely rodingitized rocks can be further divided into prehnite rodingites, hydrogrossular-diopside rodingite and vesuvianite rodingites on the basis of the mineral assemblage and textural character. The chemical potential path of mu(SiO(2))-mu(CaO/MgO) can be used to constrain the evolution of two stages of rodingitization. The first rodingitization possibly started under conditions of 410-430 degrees C and 7-9 kbar at upper greenschist facies, and resulted from a secondary serpentinization during exhumation of the subducted slab. A second and pervasive rodingitization took place under conditions of 250-350 degrees C and 2-10 kbar from greenschist to subgreenschist facies. The P-T path presented shows a retrograde evolution from eclogite to rodingite. We conclude that the process of rodingitization may also take place under subduction zone conditions in addition to its more common occurrence under ocean-floor metamorphic conditions.; Geology; SCI(E); 0; ARTICLE; 3; 363-382; 25
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/156007]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	Li, X-P.,Zhang, L.,Wei, C.,et al. Petrology of rodingite derived from eclogite in western Tianshan, China[J]. journal of metamorphic geology,2007.
APA	Li, X-P.,Zhang, L.,Wei, C.,Ai, Y.,&Chen, J..(2007).Petrology of rodingite derived from eclogite in western Tianshan, China.journal of metamorphic geology.
MLA	Li, X-P.,et al."Petrology of rodingite derived from eclogite in western Tianshan, China".journal of metamorphic geology (2007).