Zhang, Yanfei; Xu, Qijin; Wang, Chao; Jin, Zhenmin (2020): High-pressure experiments of phase compositions in subducted ophicarbonate [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.923662
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Abstract:
Ophicarbonate is an important type of hydrothermally altered ultramafic rock that occurs in spreading centers and trenches, and in the interface between a subducting slab and the overlying mantle wedge. High-pressure experiments were performed at 10-15 GPa and 700-1100 oC to investigate the phase relations of subducted ophicarbonate. Ten samples were recovered after the experiments. In the recovered experimental charges, hydrous phases include phases A, D, and E; anhydrous minerals include clinopyroxene, orthopyroxene, garnet, magnesite, and olivine/wadsleyite. Phase compositions in the recovered charges were analyzed with an electron probe micro-analyzer (EPMA, JXA-8100), installed at the Key Laboratory of Submarine Geosciences, State Oceanic Administration. The accelerating voltage, beam current and beam size were 15 kv, 20 nA and 1-2 μm, respectively, for minerals, and 15 kv,10 nA and 5-30 μm, respectively, for quench phases. Count times were 10s for each of the measured element and 5s for the background. Standard materials were diopside for SiO2, MgO and CaO, jadeite for Na2O, K-feldspar for K2O, hematite for FeO, pyrope for Al2O3, NiO for NiO, apatite (Ca5P3F) for P2O5, rutile for TiO2, and eskolaite (Cr2O3) for Cr2O3.
Supplement to:
Zhang, Yanfei; Xu, Qijin; Wang, Chao; Jin, Zhenmin (2021): Release of CO 2 in Cold Subduction Zones by Hydrous Carbonatitic Liquids. Geophysical Research Letters, 48(7), e2021GL092550, https://doi.org/10.1029/2021GL092550
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | File content | Content | Zhang, Yanfei | |||
| 2 | Binary Object | Binary | Zhang, Yanfei | |||
| 3 | Binary Object (Media Type) | Binary (Type) | Zhang, Yanfei | |||
| 4 | Binary Object (File Size) | Binary (Size) | Bytes | Zhang, Yanfei |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
6 data points