Sanukite of late Archaean and early Earth evolution.

	Sanukite of late Archaean and early Earth evolution.
	Zhang, Q ; Wang, Y ; Qian, Q ; Zhai, MG ; Jin, WJ ; Wang, YL ; Jian, P
刊名	ACTA PETROLOGICA SINICA
	2004-11-01
卷号	20 期号:6 页码:1355-1362
关键词	Sanukite Ttg Late Archaean Generation Forming Settings Plate Tectonics
ISSN号	1000-0569
文献子类	Article
英文摘要	Some Archean high-Mg diorites suite originally were recognized and termed sanukitoids by Shirey and Hanson (1984), which are similar to those of high-Mg andesites found in the Setouchi Miocene (11 similar to 15 Ma) volcanic belt in Japan. The sanukitoids are composed of diorite-monzodiorites-granodiorite and different from those of TTG suite (trondhjemite-tonalite-granodiorite). Sanukitoids have the following chemical characteristics: Mg numbers > 0.60, Ni and Cr are both > 100 ppm, Sr and Ba both typically > 500 ppm, and light rare earth elements are strongly enriched (> 100 chondritic values) with no Eu anomaly. High-Mg andesite is rare in the Archaean, but the intrusive equivalent, high-Mg diorite or sanukitoid, forms a minor but widespread component of most late Archaean terrains. The source region for sanukitoid parent magmas is thought to be the melting of the metasomatized mantle wedge, followed by extensive fractional crystallization in the crust. TTG and the sanukitoid suite may be continuous with each other, and both the products of slab melting, either directly (TTG) or indirectly (sanukitoid). Sanukitoids appear to concentrate in the Late Archaean, suggesting that subduction may have become an important process only after similar to 3.0 Ga.
WOS关键词	WESTERN SUPERIOR PROVINCE ; SETOUCHI VOLCANIC BELT ; HIGH-MG ANDESITES ; SOUTHWEST JAPAN ; SUBDUCTING SEDIMENTS ; GEOCHEMICAL EVIDENCE ; GREENSTONE-BELT ; DHARWAR CRATON ; CRUSTAL GROWTH ; GRANODIORITE
WOS研究方向	Geology
语种	英语
出版者	SCIENCE CHINA PRESS
WOS记录号	WOS:000226179100005
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/64584]
专题	中国科学院地质与地球物理研究所
通讯作者	Zhang, Q
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.Univ Hong Kong, Dept Earth Sci, Hong Kong, Hong Kong, Peoples R China 3.Chinese Acad Geol Sci, Inst Geol, Beijing 100037, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Q,Wang, Y,Qian, Q,et al. Sanukite of late Archaean and early Earth evolution.[J]. ACTA PETROLOGICA SINICA,2004,20(6):1355-1362.
APA	Zhang, Q.,Wang, Y.,Qian, Q.,Zhai, MG.,Jin, WJ.,...&Jian, P.(2004).Sanukite of late Archaean and early Earth evolution..ACTA PETROLOGICA SINICA,20(6),1355-1362.
MLA	Zhang, Q,et al."Sanukite of late Archaean and early Earth evolution.".ACTA PETROLOGICA SINICA 20.6(2004):1355-1362.