Platinum-group element and gold enrichment in soils monitored by chromium stable isotopes during weathering of ultramafic rocks
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DOI: 10.1016/j.chemgeo.2018.09.008
Abstract: Abstract Weathering of ultramafic rocks can lead to the formation of soil profiles with high contents of Fe, Ni, Co, platinum-group elements (PGE) and gold. Traditionally, these metal-rich soils are known as “laterites” and are… read more here.
Keywords: enrichment; ultramafic rocks; weathering ultramafic; platinum group ... See more keywords
Landsat-8 data for chromite prospecting in the Logar Massif, Afghanistan
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DOI: 10.1016/j.heliyon.2018.e00542
Abstract: 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. This ophiolite… read more here.
Keywords: data chromite; landsat data; logar province; logar ... See more keywords
Effects of geodynamic setting on the redox state of fluids released by subducted mantle lithosphere
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DOI: 10.1016/j.lithos.2016.12.023
Abstract: Abstract Magnetite breakdown during subduction of serpentinised ultramafic rocks may produce oxidised fluids that oxidise the deep Earth and/or the sub-arc mantle, either via direct transport of ferric iron, or via redox reactions between ferric… read more here.
Keywords: state; mantle; ultramafic rocks; subduction ... See more keywords
Petrology and geochemistry of mafic and ultramafic rocks in the north Tianshan ophiolite: Implications for petrogenesis and tectonic setting
Sign Up to like & getrecommendations! Published in 2018 at "Lithos"
DOI: 10.1016/j.lithos.2018.08.012
Abstract: Abstract New petrological and geochemical data for the mafic (pillow basalt, massive basalt, gabbro) and ultramafic rocks (serpentinite, serpentinized harzburgite) in the north Tianshan ophiolite cropping out along the Duku road are combined to constrain… read more here.
Keywords: petrology; basalt; ultramafic rocks; tianshan ophiolite ... See more keywords
Petrogenesis and tectonic implications of the neoproterozoic mafic-ultramafic rocks in the western Jiangnan Orogen: Insights from in situ analysis of clinopyroxenes
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DOI: 10.1016/j.lithos.2021.106156
Abstract: Abstract The Huaqiao clinopyroxenite and Maodu gabbro are Neoproterozoic mafic-ultramafic rocks located in the western Jiangnan Orogen. Both rocks contain fresh clinopyroxenes. The in situ analysis of fresh clinopyroxenes from these rocks provides essential information… read more here.
Keywords: huaqiao clinopyroxenite; neoproterozoic mafic; ppm; ultramafic rocks ... See more keywords
Extensional episodes in the Paleoproterozoic Capricorn Orogen, Western Australia, revealed by petrogenesis and geochronology of mafic–ultramafic rocks
Sign Up to like & getrecommendations! Published in 2018 at "Precambrian Research"
DOI: 10.1016/j.precamres.2017.12.015
Abstract: Abstract Extensional episodes in Precambrian orogens are often difficult to decipher because of subsequent orogenesis and intracontinental reworking. Here, we use geochemical and geochronological constraints of a suite of preserved mafic–ultramafic rocks in the Paleoproterozoic… read more here.
Keywords: mafic ultramafic; ultramafic rocks; bryah sub; trillbar complex ... See more keywords
Petrology and geochemistry of ophiolitic ultramafic rocks and chromitites across the Eastern Desert of Egypt: Insights into the composition and nature of a Neoproterozoic mantle and implication for the evolution of SSZ system
Sign Up to like & getrecommendations! Published in 2020 at "Precambrian Research"
DOI: 10.1016/j.precamres.2019.105565
Abstract: Abstract Large outcrops of ultramafic rocks are common in the Central Eastern Desert (CED) of Egypt and represent residual mantle sections and cumulates of dismembered Neoproterozoic oceanic lithosphere. This study integrates field observations, petrography, geochemistry… read more here.
Keywords: geochemistry; petrology; ultramafic rocks; ssz system ... See more keywords
Fossilized Life in Subseafloor Ultramafic Rocks
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DOI: 10.1080/01490451.2017.1370517
Abstract: ABSTRACT Ultramafic rocks are hypothesized to support a subseafloor hydrogen-driven biosphere because of extensive production of bioavailable energy sources like H2 or CH4 from fluid-rock interactions. Hence, the apparent lack of microbial remains in subseafloor… read more here.
Keywords: ultramafic rocks; subseafloor; subseafloor ultramafic; microbial remains ... See more keywords
Two‐Stage Sulfide Mineral Assemblages in the Mineralized Ultramafic Rocks of the Laowangzhai Gold Deposit (Yunnan, SW China): Implications for Metallogenic Evolution
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DOI: 10.1111/rge.12201
Abstract: The Laowangzhai gold deposit, located in the Ailaoshan gold belt (SW China), is hosted in various types of rocks, including in quartz porphyry, carbonaceous slate, meta‐sandstone, lamprophyre, and altered ultramafic rocks. In contrast to other… read more here.
Keywords: ultramafic rocks; fluid; laowangzhai gold; altered ultramafic ... See more keywords
Identification and Origin of Jurassic (~182 Ma) Zircon Grains from Chromitite within the Peridotite of the Jijal Complex, Kohistan Arc in North Pakistan
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DOI: 10.3390/min10121085
Abstract: The Jijal ultramafic–mafic complex in Pakistan probably preserves the most complete fragments of the petrological Moho. However, a few studies argue for multiple origins (including petrogenetic speculations and tectonic reconstructions) for different lithologies. One of… read more here.
Keywords: zircon; jijal complex; arc; ultramafic rocks ... See more keywords