New High-Pressure Phase of CaCO3 at the Topmost Lower Mantle: Implication for the Deep-Mantle Carbon Transportation

doi:10.1002/2017GL076536

	New High-Pressure Phase of CaCO3 at the Topmost Lower Mantle: Implication for the Deep-Mantle Carbon Transportation
	Li, Xinyang 1; Zhang, Zhigang 2,3; Lin, Jung-Fu 4; Ni, Huaiwei 1; Prakapenka, Vitali B.5; Mao, Zhu 1
刊名	GEOPHYSICAL RESEARCH LETTERS
	2018-02-16
卷号	45 期号:3 页码:1355-1360
ISSN号	0094-8276
DOI	10.1002/2017GL076536
文献子类	Article
英文摘要	In this study, we have investigated the stability of CaCO3 at high pressures and temperatures using synchrotron X-ray diffraction in laser-heated diamond anvil cells. Our experimental results have shown that CaCO3 in the aragonite structure transforms into CaCO3-VII (P2(1)/c) at 27 GPa and 1,500 K with a negative Clapeyron slope of -4.3(9) MPa/K. CaCO3-VII is stable between 23 and 38 GPa at 2,300 K and transforms into post-aragonite at 42 GPa and 1,400 K. Furthermore, it reacts with stishovite, an abundant form of SiO2 in subducted oceanic crust, forming CaSiO3-perovskite. The occurrence of CaSiO3-perovskite via the reaction of CaCO3-VII and stishovite provides an explanation for the observation of the high concentrations of CaSiO3-perovskite and some amount of CaCO3 in deep-mantle inclusions. CaCO3-VII is thus an important carbon-bearing phase at the topmost lower mantle and may provide necessary carbon to produce deep-mantle diamonds.
WOS关键词	EARTHS LOWER MANTLE ; X-RAY-DIFFRACTION ; HIGH-TEMPERATURE ; CRYSTAL-STRUCTURE ; CALCITE-III ; ARAGONITE ; TRANSITION ; DIAMONDS ; INCLUSIONS ; SUBDUCTION
WOS研究方向	Geology
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000426161800019
资助机构	Strategic Priority Research Program of the Chinese Academy of Sciences(XDB18000000) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB18000000) ; China National Science Foundation(41522403) ; China National Science Foundation(41522403) ; National Basic Research Program of China(2014CB845904) ; National Basic Research Program of China(2014CB845904) ; National Natural Science Foundation of China(41020134003) ; National Natural Science Foundation of China(41020134003) ; Deep Carbon Observatory of the Sloan Foundation ; Deep Carbon Observatory of the Sloan Foundation ; NSF Geophysics ; NSF Geophysics ; Center for High Pressure Science and Technology Advanced Research (HPSTAR) ; Center for High Pressure Science and Technology Advanced Research (HPSTAR) ; National Science Foundation-Earth Sciences(EAR-1128799) ; National Science Foundation-Earth Sciences(EAR-1128799) ; Department of Energy-GeoSciences(DE-FG02-94ER14466) ; Department of Energy-GeoSciences(DE-FG02-94ER14466) ; DOE-BES(DE-AC02-06CH11357) ; DOE-BES(DE-AC02-06CH11357) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB18000000) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB18000000) ; China National Science Foundation(41522403) ; China National Science Foundation(41522403) ; National Basic Research Program of China(2014CB845904) ; National Basic Research Program of China(2014CB845904) ; National Natural Science Foundation of China(41020134003) ; National Natural Science Foundation of China(41020134003) ; Deep Carbon Observatory of the Sloan Foundation ; Deep Carbon Observatory of the Sloan Foundation ; NSF Geophysics ; NSF Geophysics ; Center for High Pressure Science and Technology Advanced Research (HPSTAR) ; Center for High Pressure Science and Technology Advanced Research (HPSTAR) ; National Science Foundation-Earth Sciences(EAR-1128799) ; National Science Foundation-Earth Sciences(EAR-1128799) ; Department of Energy-GeoSciences(DE-FG02-94ER14466) ; Department of Energy-GeoSciences(DE-FG02-94ER14466) ; DOE-BES(DE-AC02-06CH11357) ; DOE-BES(DE-AC02-06CH11357) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB18000000) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB18000000) ; China National Science Foundation(41522403) ; China National Science Foundation(41522403) ; National Basic Research Program of China(2014CB845904) ; National Basic Research Program of China(2014CB845904) ; National Natural Science Foundation of China(41020134003) ; National Natural Science Foundation of China(41020134003) ; Deep Carbon Observatory of the Sloan Foundation ; Deep Carbon Observatory of the Sloan Foundation ; NSF Geophysics ; NSF Geophysics ; Center for High Pressure Science and Technology Advanced Research (HPSTAR) ; Center for High Pressure Science and Technology Advanced Research (HPSTAR) ; National Science Foundation-Earth Sciences(EAR-1128799) ; National Science Foundation-Earth Sciences(EAR-1128799) ; Department of Energy-GeoSciences(DE-FG02-94ER14466) ; Department of Energy-GeoSciences(DE-FG02-94ER14466) ; DOE-BES(DE-AC02-06CH11357) ; DOE-BES(DE-AC02-06CH11357) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB18000000) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB18000000) ; China National Science Foundation(41522403) ; China National Science Foundation(41522403) ; National Basic Research Program of China(2014CB845904) ; National Basic Research Program of China(2014CB845904) ; National Natural Science Foundation of China(41020134003) ; National Natural Science Foundation of China(41020134003) ; Deep Carbon Observatory of the Sloan Foundation ; Deep Carbon Observatory of the Sloan Foundation ; NSF Geophysics ; NSF Geophysics ; Center for High Pressure Science and Technology Advanced Research (HPSTAR) ; Center for High Pressure Science and Technology Advanced Research (HPSTAR) ; National Science Foundation-Earth Sciences(EAR-1128799) ; National Science Foundation-Earth Sciences(EAR-1128799) ; Department of Energy-GeoSciences(DE-FG02-94ER14466) ; Department of Energy-GeoSciences(DE-FG02-94ER14466) ; DOE-BES(DE-AC02-06CH11357) ; DOE-BES(DE-AC02-06CH11357)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/82864]
专题	中国科学院地质与地球物理研究所
通讯作者	Mao, Zhu
作者单位	1.Univ Sci & Technol China, Sch Earth & Planetary Sci, Lab Seismol & Phys Earths Interior, Hefei, Anhui, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China 3.Univ Chinese Acad Sci, Coll Earth Sci, Beijing, Peoples R China 4.Univ Texas Austin, Dept Geol Sci, Jackson Sch Geosci, Austin, TX USA 5.Univ Chicago, Ctr Adv Radiat Sources, Chicago, IL 60637 USA
推荐引用方式 GB/T 7714	Li, Xinyang,Zhang, Zhigang,Lin, Jung-Fu,et al. New High-Pressure Phase of CaCO3 at the Topmost Lower Mantle: Implication for the Deep-Mantle Carbon Transportation[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(3):1355-1360.
APA	Li, Xinyang,Zhang, Zhigang,Lin, Jung-Fu,Ni, Huaiwei,Prakapenka, Vitali B.,&Mao, Zhu.(2018).New High-Pressure Phase of CaCO3 at the Topmost Lower Mantle: Implication for the Deep-Mantle Carbon Transportation.GEOPHYSICAL RESEARCH LETTERS,45(3),1355-1360.
MLA	Li, Xinyang,et al."New High-Pressure Phase of CaCO3 at the Topmost Lower Mantle: Implication for the Deep-Mantle Carbon Transportation".GEOPHYSICAL RESEARCH LETTERS 45.3(2018):1355-1360.