Experimental constraints on trace element partitioning between coesite and hydrous silicate melt at 5 GPa and 1500-1750 degrees C

doi:10.1007/s11430-020-9745-2

	Experimental constraints on trace element partitioning between coesite and hydrous silicate melt at 5 GPa and 1500-1750 degrees C
	Yan, Wei 1,2; Liu, Xi 1,2; Sun, Saijun 3; Sun, Weidong3 ; Wu, Dan 4
	2021-06-15
发表期刊	SCIENCE CHINA-EARTH SCIENCES
ISSN	1674-7313
页码	13
通讯作者	Liu, Xi([email protected])
摘要	Trace element partitioning between coesite and hydrous silicate melt has been investigated at 5 GPa and 1500-1750 degrees C. High-P experiments successfully produced large coesite crystals in equilibrium with large silicate melt pools (plus kyanite and corundum crystals in some cases). Scanning electron microscopy and micro-Raman spectroscopy were employed to characterize the phases and the textures. Wavelength-dispersive electron microprobe analyses were performed to quantify conventional major elements, and laser ablation-inductively coupled plasma-mass spectrometry analyses were successfully conducted to quantify trace elements. Eventually, high-P partition coefficients were obtained for 33 elements. In general coesite is a very pure phase. With a few possible exceptions like Sc, Ti, and V, nearly all other trace elements are incompatible in coesite. Moreover, the partitioning behaviors of nearly all trace elements except some 4+ cations cannot be readily described by the lattice strain model, presumably implying a minor role for the cation size in the trace-element partitioning. Combining our experimental results with the results in the literature, some T and P effects on the element partitioning behavior have been observed: T seemingly has different effects on different trace elements, but P might negatively correlate with the partition coefficients in all cases. Due to its large modal fraction in some subducted materials such as the continental crustal material, coesite might play an important role in the distributions of some trace elements, Ti for example.
关键词	Partition coefficients High-P experiments LA-ICP-MS Coesite Hydrous silicate melt Temperature and pressure dependence
DOI	10.1007/s11430-020-9745-2
收录类别	SCI
语种	英语
资助项目	National Key Research and Development Program of China[2016YFC0600408]; Strategic Priority Research Program (B) of Chinese Academy of Sciences[XDB42000000]; Program of the National Mineral Rock and Fossil Specimens Resource Center from MOST, China
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000663288400001
出版者	SCIENCE PRESS
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/176871
专题	深海极端环境与生命过程研究中心
通讯作者	Liu, Xi
作者单位	1.Minist Educ China, Key Lab Orogen Belts & Crustal Evolut, Beijing 100871, Peoples R China 2.Peking Univ, Sch Earth & Space Sci, Beijing 100871, Peoples R China 3.Chinese Acad Sci, Inst Oceanog, Ctr Deep Sea Res, Qingdao 266071, Peoples R China 4.Chinese Acad Sci, Guangzhou Inst Geochem, Key Lab Mineral & Metallogeny, Guangzhou 510640, Peoples R China
推荐引用方式 GB/T 7714	Yan, Wei,Liu, Xi,Sun, Saijun,et al. Experimental constraints on trace element partitioning between coesite and hydrous silicate melt at 5 GPa and 1500-1750 degrees C[J]. SCIENCE CHINA-EARTH SCIENCES,2021:13.
APA	Yan, Wei,Liu, Xi,Sun, Saijun,Sun, Weidong,&Wu, Dan.(2021).Experimental constraints on trace element partitioning between coesite and hydrous silicate melt at 5 GPa and 1500-1750 degrees C.SCIENCE CHINA-EARTH SCIENCES,13.
MLA	Yan, Wei,et al."Experimental constraints on trace element partitioning between coesite and hydrous silicate melt at 5 GPa and 1500-1750 degrees C".SCIENCE CHINA-EARTH SCIENCES (2021):13.

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