Results 91 to 100 of about 2,647 (217)
, 2020 This dataset include the whole rock major and trace element compositions of harzburgite from the Xigaze ophiolites in southern Tibet. It also includes the major and trace element compositions of olivine, orthopyroxene, clinopyroxene, spinel, tremolite ...
Chen, Y (via Mendeley Data) +1 more
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Petrology, geochemistry and tectonic significance of serpentinized ultramafic rocks from the South Arm of Sulawesi, Indonesia [PDF]
, 2015 Serpentinized ultramafic rocks occur in two separate basement complexes in the South Arm of Sulawesi, the Bantimala and Barru Blocks. We present petrographic, mineral chemical and geochemical data for these rocks, and interpret them in terms of ...
Ellis, David J. +2 more
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Evolution in Fluid Composition During Subduction
Geochemistry, Geophysics, GeosystemsFluid‐rock reactions play important roles in seismicity, arc‐magma chemistries, and volatile cycling at convergent plate boundaries. In subduction environments, metamorphic reactions involving hydrous fluids facilitate metasomatic alteration and mass ...
A. A. Helm, M. J. Caddick, R. J. Bodnar
doaj +1 more source
Substantial Global Radial Variations of Basalt Content Near the 660‐km Discontinuity
AGU AdvancesMid‐ocean ridges generate basalt and harzburgite, which are introduced into the mantle through subduction as a mechanical mixture, contributing to both lateral and radial compositional heterogeneity.
Shangqin Hao +2 more
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Mineral chemistry and alteration patterns of Cr-spinel in serpentinized peridotites from NW Iran
Journal of Asian Earth Sciences: XThe Late Cretaceous ophiolite mélange in the Salmas area of NW Iran is a part of the Neotethys ophiolites. The mélange includes serpentinized harzburgite, serpentinites, mafic rocks, radiolarite, layered red pelagic limestones and grey and white marbles.
Mohssen Moazzen +3 more
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, 2006 The Limousin ophiolite (French Massif Central) occurs as elongate bodies forming a (nearly) continuous suture zone between two major lithotectonic units of the French Variscan belt.
Mercier, Jean-Claude +3 more
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, 2019 The Edessa ophiolite complex of northern Greece consists of remnants of oceanic lithosphere emplaced during the Upper Jurassic-Lower Cretaceous onto the Palaeozoic-Mesozoic continental margin of Eurasia.
Aikaterini Rogkala +4 more
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, 2020 International audienceIn Archean and Paleoproterozoic greenstone belts, ultramafic (UM) rock occurrences are commonly found in close association within basic and differentiated magmatic series.
Béziat, Didier +14 more
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Basalt magma interaction with harzburgite and the formation of high‐magnesium andesites
Geophysical Research Letters, 1986 The interaction of basalt melt with mantle harzburgite at low pressure might result in silica enrichment of the melt by assimilation of orthopyroxene. Experimental tests of this hypothesis show that silica‐rich liquids (56 wt %) are produced by melt‐orthopyroxene reaction at 1200° to 1250°C.
openaire +1 more source
There are many ultramafic complexes in the Sangun zone in central Chugoku district, Southwest Japan: they are Shiratakiyama, Tari-Misaka, Inazumiyama, Mochimaru, Yagami, Kasamatsu, Takase, Mimuro, Ashidachi, Yufune, Yanomine, Suishoyama, Niimi, Osa ...
村岡, 弘康 +8 more
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