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Data Publisher for Earth & Environmental Science

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.
Keyword(s):
cold subduction zone; hydrous carbonatitic liquids; Ophicarbonate
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):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
File contentContentZhang, Yanfei
Binary ObjectBinaryZhang, Yanfei
Binary Object (Media Type)Binary (Type)Zhang, Yanfei
Binary Object (File Size)Binary (Size)BytesZhang, Yanfei
Size:
6 data points

Data

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Content

Binary

Binary (Type)

Binary (Size) [Bytes]
Compositon of starting materialTable_S1.zipapplication/zip29.3 kBytes
Compositon of mineralsTable_S2.zipapplication/zip78.3 kBytes
Compositon of quench productsTable_S3.zipapplication/zip49 kBytes