Results 61 to 70 of about 7,121 (239)
Jurnal Fisika Flux, 2009 A decaying measurement of Anhysteretic Remanent Magnetization (ARM) has been undertaken to estimation the grain size of magnetic mineral which carries remanent on peridotite igneous rocks.
Rina Reida +2 more
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Diamonds, dunites, and metasomatic rocks formed by melt/rock reaction in craton roots
Communications Earth & Environment, 2022 Reactions of depleted, reduced peridotite with oxidised volatile-rich melts can explain several contentious rock assemblages sampled by kimberlites from the metasomatised zone at the base of the lithosphere, according to high pressure laboratory ...
Zsanett Pintér +2 more
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Bullen's parameter as a seismic observable for spin crossovers in the lower mantle [PDF]
, 2017 Elastic anomalies produced by the spin crossover in ferropericlase have been documented by both first principles calculations and high pressure-temperature experiments. The predicted signature of this spin crossover in the lower mantle is, however, subtle and difficult to geophysically observe within the mantle.
arxiv +1 more source
Lithological structure of the Galápagos Plume
Geochemistry, Geophysics, Geosystems, 2013 We have measured Ni, Ca, and Mn in olivine phenocrysts from volcanoes in the Galápagos Archipelago to infer the mantle source lithologies. Results show that peridotite is the dominant source lithology for Fernandina, Floreana, Genovesa, Wolf Island, and ...
Christopher Vidito +4 more
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European Journal of Remote Sensing, 2020 This study investigates the usage of HyMAP airborne hyperspectral and Sentinel-2, ASTER and Landsat-8 OLI spaceborne multispectral data for detailed mapping of mineral resources in the Arctic. The EnMAP Geological Mapper (EnGeoMAP) and Iterative Spectral
Sara Salehi +2 more
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Jurnal Fisika Flux, 2013 Abstrak : Peridotite rocks are ultra-alkaline rocks that igneous rocks which high in mineral content of FeO, and also a magnetic mineral. Each rock type has specific properties and characteristics are manifested in the magnetic field in magnetic ...
Sudarningsih Sudarningsih +2 more
doaj +3 more sources
Vestnik Permskogo Universiteta: Seriâ Geologiâ, 2017 The article considers a chemical variation of accessory and ore-forming chrome spinels from the Kraka ultramafic massif at the different scales, from the deposit to the thin section.
D. E. Saveliev, I. A. Blinov
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Rudarsko-geološko-naftni ZbornikThe investigated Mt. Zrinska Gora amphibolites are a part of the metamorphic sole of the Banovina ophiolite complex. Mineral composition and other petrographic characteristics of amphibolites and adjacent peridotite were investigated by polarised ...
Marija Putak Juriček, Vesnica Garašić
doaj +1 more source
Geodynamic Information in Peridotite Petrology [PDF]
Journal of Petrology, 2004 Systematic differences are observed in the petrology and major element geochemistry of natural peridotite samples from the sea floor near oceanic ridges and subduction zones, the mantle section of ophiolites, massif peridotites, and xenoliths of cratonic mantle in kimberlite.
openaire +2 more sources
The role of volatiles in reactive melt transport in the asthenosphere [PDF]
, 2015 Experimental studies of mantle petrology find that small concentrations of water and carbon dioxide have a large effect on the solidus temperature and distribution of melting in the upper mantle. However, it has remained unclear what effect small fractions of deep, volatile-rich melts have on melt transport and reactive melting in the shallow ...
arxiv +1 more source