Temperature-induced amorphization in CaCO3 at high pressure and implications for recycled CaCO3 in subduction zones
نویسندگان
چکیده
منابع مشابه
DETERMINATION OF THE DECOMPOSITION BOUNDARY OF CaCO3 AT HIGH TEMPERATURE: IMPLICATIONS FOR IMPACT-INDUCED DEGASSING OF CaCO3
IMPLICATIONS FOR IMPACT-INDUCED DEGASSING OF CaCO3. K. Ishibashi, T. Yagi, and T. Matsui, Dept. of Earth Planet. Sci., Univ. of Tokyo (7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan; ishibashi@eps.s.utokyo.ac.jp), 2 Institute for Solid State Physics, Univ. of Tokyo (5-1-5, Kashiwanoha, Kashiwa, Chiba, 277-8581, Japan), Dept. of Complexity Sci. and Eng., Univ. of Tokyo (5-1-5, Kashiwanoha, Kash...
متن کاملShock temperature in calcite (CaCO3) at 95^160 GPa
The temperatures induced in crystalline calcite (CaCO3) upon planar shock compression (95^160 GPa) are reported from two-stage light gas gun experiments. Temperatures of 3300^5400 K are obtained by fitting six-channel optical pyrometer radiances in the 450^900 nm range to the Planck gray-body radiation law. Thermodynamic calculations demonstrate that these temperatures are some 400^1350 K lower...
متن کاملHigh-pressure phases of CaCO3: Crystal structure prediction and experiment
Post-aragonite phase of CaCO3, experimentally known to be stable above 40 GPa [S. Ono, T. Kikegawa, Y. Ohishi, J. Tsuchiya, Post-aragonite phase transformation in CaCO3 at 40 GPa, Am. Mineral. 90 (2005) 667–671], is believed to be a major carboncontaining mineral in the Earth’s mantle. Crystal structure of this mineral phase could not be solved using experimental data or traditional theoretical...
متن کاملSHOCK TEMPERATURES IN CALCITE (CaCO3): IMPLICATION FOR SHOCK INDUCED DECOMPOSITION
The temperatures induced in crystalline calcite upon planar shock compression (95-160 GPa) are reported from two-stage light gas-gun experiments. The temperatures are obtained fitting 6channel optical pyrometer radiances in the 450 to 900 nm range, to a Planck radiation law temperature varied from 3300 to 5400 K. Calculations demonstrate that the temperatures are some 400 to 1350 K lower than i...
متن کاملNovel high-pressure structures of MgCO3, CaCO3 and CO2 and their role in Earth's lower mantle
a Laboratory of Crystallography, Department of Materials ETH Zurich, HCI G 515, Wolfgang-Pauli-Str. 10, CH-8093 Zurich, Switzerland b Geology Department, Moscow State University, 119992 Moscow, Russia c Institute for Research on Earth Evolution, Japan Agency for Marine-Earth Science and Technology, 2-15 Natsushima-cho, Yokosuka-shi, Kanagawa 237-0061, Japan d National Laboratory of Superhard Ma...
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ژورنال
عنوان ژورنال: Nature Communications
سال: 2019
ISSN: 2041-1723
DOI: 10.1038/s41467-019-09742-5