FN Archimer Export Format
PT J
TI Geochemical Characterization of the Oman Crust-Mantle Transition Zone, OmanDP Holes CM1A and CM2B
BT 
AF KOURIM, F.
   ROSPABé, Mathieu
   DYGERT, N.
   CHATTERJEE, S.
   TAKAZAWA, E.
   WANG, K. L.
   GODARD, M.
   BENOIT, M.
   GIAMPOURAS, M.
   ISHII, K.
   TEAGLE, D. A. H.
   COOPER, M. J.
   KELEMEN, P.
AS 1:1;2:2;3:3;4:4;5:4;6:1,5;7:6;8:7;9:8;10:4;11:9;12:9;13:10;
FF 1:;2:;3:;4:;5:;6:;7:;8:;9:;10:;11:;12:;13:;
C1 Acad Sinica, Inst Earth Sci, Taipei, Taiwan.
   Japan Agcy Marine Earth Sci & Technol JAMSTEC, Res Inst Marine Geodynam IMG, Yokosuka, Kanagawa, Japan.
   Univ Tennessee, Dept Earth & Planetary Sci, Knoxville, TN USA.
   Niigata Univ, Fac Sci, Dept Geol, Niigata, Japan.
   Natl Taiwan Univ, Dept Earth Sci, Taipei, Taiwan.
   Univ Montpellier, CNRS, Geosci Montpellier, Montpellier, France.
   Univ Toulouse, CNRS, IRD, Geosci Environm Toulouse GET,Observ Midi Pyrenees, Toulouse, France.
   Univ Granada, CSIC, Inst Andaluz Ciencias Tierra IACT, Granada, Spain.
   Univ Southampton, Natl Oceanog Ctr Southampton, Sch Ocean & Earth Sci, Southampton, Hants, England.
   Columbia Univ, Lamont Doherty Earth Observ, Palisades, NY USA.
C2 ACAD SINICA, TAIWAN
   JAMSTEC, JAPAN
   UNIV TENNESSEE, USA
   NIIGATA UNIV, JAPAN
   UNIV NATL TAIWAN NTU, TAIWAN
   UNIV MONTPELLIER, FRANCE
   UNIV TOULOUSE, FRANCE
   UNIV GRANADA, SPAIN
   UNIV SOUTHAMPTON, UK
   UNIV COLUMBIA, USA
IF 3.9
TC 2
UR https://archimer.ifremer.fr/doc/00773/88506/94178.pdf
   https://archimer.ifremer.fr/doc/00773/88506/94179.docx
   https://archimer.ifremer.fr/doc/00773/88506/94180.xlsx
   https://archimer.ifremer.fr/doc/00773/88506/94181.xlsx
LA English
DT Article
DE ;partial melting versus melt-rock reaction;dunites and harzburgites serpentinization and carbonation;Oman ophiolite crust-mantle transition;holes CM1A and CM2B;ICDP Oman drilling project
AB The transition from the gabbroic oceanic crust to the residual mantle harzburgites of the Oman ophiolite has been drilled at Holes CM1A and CM2B (Wadi Tayin massif) during Phase 2 of the International Continental Scientific Drilling Program Oman Drilling Project (November 2017-January 2018). In order to unravel the formation processes of ultramafic rocks in the Wadi Tayin massif crust-mantle transition zone and deeper in the mantle sections beneath oceanic spreading centers, our study focuses on the whole rock major and trace element compositions (together with CO2 and H2O concentrations) of these ultramafic rocks (56 dunites and 49 harzburgites). Despite extensive serpentinization and some carbonation, most of the trace element contents (REE, HFSE, Ti, Th, U) record high temperature, magmatic process-related signatures. Two major trends are observed, with good correlations between (a) Th and U, Nb and LREE on one hand, and between (b) heavy REE, Ti and Hf on the other hand. We interpret the first trend as the signature of late melt/peridotite interactions as LREE are known to be mobilized by such processes (''lithospheric process'') and the second trend as the signature of the initial mantle partial melting (''asthenospheric process''), with little or no overprint from melt/rock reaction events. 
PY 2022
PD APR
SO Journal Of Geophysical Research-solid Earth
SN 2169-9313
PU Amer Geophysical Union
VL 127
IS 4
UT 000781731300001
DI 10.1029/2021JB022694
ID 88506
ER

EF