Results 111 to 120 of about 11,823 (188)
GeoresursyThe paper presents new data on the structure and composition of ultramafic rocks in the eastern part of the South Kraka massif. It is shown that the studied area is composed predominantly of spinel peridotites, among which the main role belongs to ...
D. E. Saveliev +4 more
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Alteration of Feldspar‐Rich Rocks on Ancient Mars and Its Possible Link to Ca/Fe‐Rich Carbonates
Journal of Geophysical Research: Planets, Volume 131, Issue 6, June 2026.Abstract Feldspar‐rich rocks have increasingly been discovered on the martian surface. They may have been an important part of the ancient martian crust and may be related to Ca/Fe‐rich carbonates (one of two types of carbonates on Mars and the other being Mg‐rich carbonates), but compared to mafic rocks, their interaction with water on ancient Mars is
C. Wang, T. Usui, M. Melwani Daswani
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The Case for a Completely Solid Martian Mantle—No Basal Magma Layer Extant
Journal of Geophysical Research: Planets, Volume 131, Issue 6, June 2026.Abstract Recent results from the Mars InSight mission suggested the existence of a molten silicate layer atop the core‐mantle boundary. Geophysical modeling of this layer suggested that it must be denser than the overlying mantle but less dense than the core, and have either a viscosity similar to that of the overlying solid mantle or a strong chemical
Megan S. Duncan +2 more
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, 2006 (Appendix 1) Major ion concentrations in water samples leached from serpentinized ultramafic rocks of ODP Site 173 ...
Barnes, Jaime D +3 more
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Geologica Acta, 2017 The Pobei mafic-ultramafic complex in northwestern China comprises magmatic Cu-Ni sulfide ore deposits coexisting with Fe-Ti oxide deposits. The Poshi, Poyi, and Podong ultramafic intrusions host the Cu-Ni ore. The ultramafic intrusions experienced four
Y.G. LIU +4 more
doaj
Arc Heat Flow and Magmatic Heat Budgets
Reviews of Geophysics, Volume 64, Issue 2, June 2026.Abstract We evaluate hydrothermal heat loss from 11 volcanic‐arc segments (∼6,000 km of arc length, ∼10% of the global total), motivated by the observation that much magmatic heat ultimately crosses the land surface as heated aqueous fluid. Heat loss takes place by volcanic eruption, geothermal heat conduction to the surface, fumarolic (vapor ...
S. E. Ingebritsen +7 more
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Fossilized Life in Subseafloor Ultramafic Rocks
, 2018 Ultramafic rocks are hypothesized to support a subseafloor hydrogen-driven biosphere because of extensive production of bioavailable energy sources like H-2 or CH4 from fluid-rock interactions. Hence, the apparent lack of microbial remains in subseafloor
C. Broman +9 more
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Low temperature carbonation and CO2 mineral trapping in altered hydrotalcite-rich ultrmafic rocks
Scientific ReportsMitigating global warming necessitates the immediate reduction of carbon dioxide (CO₂) emissions and its effective sequestration and storage. One promising strategy is geologic carbon sequestration (GCS), which relies on the mineralization of CO2 through
Mahmoud Leila +4 more
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Geophysical Prospecting, Volume 74, Issue 5, June 2026.ABSTRACT Borehole resistivity logging can play an important role in subsurface exploration by enhancing the accuracy of surface data inversion models. However, its application in the mining industry remains limited due to challenges posed by complex geological formations, particularly in vein‐hosted deposits such as orogenic gold and porphyry copper ...
Yasaman Nemati +3 more
wiley +1 more source