Results 11 to 20 of about 39,591 (263)

Water in Hawaiian peridotite minerals: A case for a dry metasomatized oceanic mantle lithosphere

open access: yesGeochemistry, Geophysics, Geosystems, 2015
The distribution of water concentrations in the oceanic upper mantle has drastic influence on its melting, rheology, and electrical and thermal conductivities and yet is primarily known indirectly from analyses of OIB and MORB.
Anne H. Peslier, Michael Bizimis
doaj   +2 more sources

Corrigendum to: A Thermodynamic Model for the Subsolidus Evolution and Melting of Peridotite

open access: yesJournal of Petrology, 2021
We present a structural update to the thermodynamic model for calculating peridotite phase relations and melt compositions at 0·01 to 60 kbar and from 600 °C to the peridotite liquidus in the system K2O–Na2O–CaO–FeO–MgO–Al2O3–SiO2–TiO2–Fe2O3–Cr2O3 ...
E. Tomlinson, T. Holland
semanticscholar   +1 more source

Characteristics of Chromite Deposits at North Kabaena District, Bombana Regency, Southeast Sulawesi Province, Indonesia

open access: yesJGEET: Journal of Geoscience, Engineering, Environment and Technology, 2021
The study area is located in North Kabaena District, Bombana Regency, Southeast Sulawesi. This paper is aimed to describe characacristics of chromite deposits.
Hasria   +7 more
doaj   +1 more source

Natural evidence for garnet-spinel transition (GST) in the Earth's mantle [PDF]

open access: yes, 2008
This study based on compiled world-wide garnet peridotite data confirms the GST in high P and T conditions, which was obtained from Al-free experimental system (MgO-Cr~2~O~3~-SiO~2~) by Klemme (2004). A new spinel-phase peridotite zone, garnet peridotite
BenXun Su
core   +3 more sources

Petrology of some oceanic island basalts: PRIMELT2.XLS software for primary magma calculation [PDF]

open access: yes, 2008
PRIMELT2.XLS software is introduced for calculating primary magma composition and mantle potential temperature (TP) from an observed lava composition. It is an upgrade over a previous version in that it includes garnet peridotite melting and it detects ...
Asimow, Paul D., Herzberg, C.
core   +2 more sources

Karakterisasi Mineral Magnetik Batuan Peridotit Daerah Awang Bangkal Kabupaten Banjar Kalimantan Selatan Menggunakan Metode XRD dan King

open access: yesJurnal Fisika Flux, 2012
Study the nature of magnetism in rocks that has been carried out at the research of peridotite rocks in Awang Bangkal Banjar Regency has not finished, still need to do further research.
Shinta Khalidah   +2 more
doaj   +1 more source

Oxygen-isotope and trace element constraints on the origins of silica-rich melts in the subarc mantle [PDF]

open access: yes, 2007
Peridotitic xenoliths in basaltic andesites from Batan island in the Luzon arc contain silica-rich (broadly dacitic) hydrous melt inclusions that were likely trapped when these rocks were within the upper mantle wedge underlying the arc.
Eiler, J. M.   +4 more
core   +5 more sources

MANTLE TERRANES OF THE SIBERIAN CRATON: THEIR INTERACTION WITH PLUME MELTS BASED ON THERMOBAROMETRY AND GEOCHEMISTRY OF MANTLE XENOCRYSTS

open access: yesГеодинамика и тектонофизика, 2019
We have studied variations in the structure and composition of minerals from the pipes of the Yakutian kimberlite province (YKP) in different mantle terranes of the Siberian craton.
I. V. Ashchepkov   +7 more
doaj   +1 more source

The Significance of Multiple Saturation Points in the Context of Polybaric Near-fractional Melting [PDF]

open access: yes, 2004
Experimental petrologists have successfully located basaltic liquid compositions parental to mid-ocean ridge basalt that are, within experimental resolution, multiply saturated with three-phase harzburgite or four-phase lherzolite assemblages on their ...
Asimow, Paul D., Longhi, John
core   +2 more sources

Metasomatized lithospheric mantle for Mesozoic giant gold deposits in the North China craton [PDF]

open access: yes, 2020
The origin of giant lode gold deposits of Mesozoic age in the North China craton (NCC) is enigmatic because high-grade metamorphic ancient crust would be highly depleted in gold.
Becker, Harry   +9 more
core   +1 more source

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