Results 11 to 20 of about 191 (175)
Widespread abiotic methane in chromitites [PDF]
Scientific Reports, 2018 Recurring discoveries of abiotic methane in gas seeps and springs in ophiolites and peridotite massifs worldwide raised the question of where, in which rocks, methane was generated.
G. Etiope +8 more
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Landsat-8 data for chromite prospecting in the Logar Massif, Afghanistan [PDF]
Heliyon, 2018 Chromite is widely distributed in the east and southeast of Afghanistan, especially in Logar Province. Chromite mineralization is podiform-type and is hosted in the stratigraphically lowest ultramafic rocks of the Logar Ophiolite Complex.
Ramadan Abdelaziz +2 more
doaj +2 more sources
Genesis of Chromitite in Qalander Area, Northern Iraq [PDF]
Kirkuk Journal of Science, 2006 The study area is an isolated ultramafic complex composite of harzburgite-dunite-chromitite association in Qalander area, abut 10 km east of Mergesur, Erbil City, northern Iraq.
doaj +3 more sources
Genetic Link between Podiform Chromitites in the Mantle and Stratiform Chromitites in the Crust: A Hypothesis [PDF]
Minerals, 2021 No genetic link between the two main types of chromitite, stratiform and podiform chromitites, has ever been discussed. These two types of chromitite have very different geological contexts; the stratiform one is a member of layered intrusions, representing fossil magma chambers, in the crust, and the podiform one forms pod-like bodies, representing ...
openaire +1 more source
Hydrothermal Chromitites from the Oman Ophiolite: The Role of Water in Chromitite Genesis
Minerals, 2020 The role of water-rich solutions in the formation of chromitites has been the matter of controversy. We found small chromite concentrations (chromitites) in diopsidites, precipitated from high-temperature hydrothermal fluids, in the mantle to the crust of the Oman ophiolite. Here, we present petrologic characteristics of the hydrothermal chromitites to
Shoji Arai +4 more
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Acta Geologica Sinica - English Edition, Volume 97, Issue 3, Page 727-743, June 2023., 2023 Abstract The Hongshishan chromitite deposits are situated to the north of the Beishan orogenic collage, in the southern part of the Central Asian Orogenic Belt. This study describes the mineral chemistry, Re‐Os isotopes and platinum‐group elements geochemistry of the Hongshishan chromitites for the purpose of constraining the origin, evolution and ...
Zhaolin WANG +6 more
wiley +1 more source
Journal of Metamorphic Geology, Volume 41, Issue 4, Page 491-523, May 2023., 2023 Abstract The petrostructural and geochronological study of a poorly known ultramafic unit from SW Spain (Badajoz–Córdoba belt) combined with previous structural data permits disclosure of a history of metasomatism, tectono‐metamorphism, reworking and isotopic resetting related to a poly‐orogenic evolution in different geodynamic scenarios.
Benito Ábalos +2 more
wiley +1 more source
Geochemistry, Geophysics, Geosystems, 2021 In modern continental serpentinization systems and ultramafic rock‐hosted sub‐seafloor hydrothermal systems, it is believed that chromitite plays an important role in abiotic hydrocarbon generation.
Hisahiro Ueda +2 more
doaj +1 more source
CHROMITITE PROSPECTING USING LANDSAT TM AND ASTER REMOTE SENSING DATA [PDF]
ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2015 Studying the ophiolite complexes using multispectral remote sensing satellite data are interesting because of high diversity of minerals and the source of podiform chromitites.
A. Beiranvand Pour +2 more
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The structure and cryptic layering of the Pados-Tundra ultramafic complex, Serpentinite belt, Kola Peninsula, Russia [PDF]
Bulletin of the Geological Society of Finland, 2017 The Paleoproterozoic Pados-Tundra ultramafic complex, ~6 x 1.5-2.1 km in size and ~2.1 Ga in age, located in the Kola Peninsula of Russia, is the main representative of the Serpentinite belt in the northern Fennoscandian Shield.
A.Y. Barkov, A.A. Nikiforov, R.F. Martin
doaj +1 more source