Results 51 to 60 of about 194 (169)

RocMLMs: Predicting Rock Properties Through Machine Learning Models

Journal of Geophysical Research: Machine Learning and Computation, Volume 1, Issue 4, December 2024.
Abstract Mineral phase transformations significantly alter the bulk density and elastic properties of mantle rocks and consequently have profound effects on mantle dynamics and seismic wave propagation. These changes in the physical properties of mantle rocks result from evolution in the equilibrium mineralogical composition, which can be predicted by ...
Buchanan Kerswell, Nestor G. Cerpa, Andréa Tommasi, Marguerite Godard, José Alberto Padrón‐Navarta   +4 more
wiley   +1 more source

Solid-state redistribution of mineral particles in the upwelling mantle flow as a mechanism of chromite concentration in the ophiolite ultramafic rocks (on the example of Kraka ophiolite, the Southern Urals)

Georesursy, 2019
The main regularities of the structure of chromitite-bearing zones of ultramafic rock of the ophiolitic association are considered on the example of Kraka massifs.
D.E. Saveliev, V.B. Fedoseev
doaj   +1 more source

Chromitites of the Akkarginskiy massif (the Southern Urals)

Вестник Пермского университета. Геология, 2018
We consider the geological features of ultramafic rock and chrome ore deposits. It is shown that all studied deposits are podiform in morphology that is typical for the ophiolite ultramafic rocks. Morphological and chemical features of the accessory and oreforming spinels are described.
D. E. Saveliev, I. I. Musabirov
openaire   +3 more sources

Integration of ground geophysical methods to characterize near‐surface aquifer zones within an active mine

Near Surface Geophysics, Volume 22, Issue 5, Page 521-538, October 2024.
Abstract Understanding near‐surface groundwater storage, flow patterns, surface and groundwater interactions in mining areas can assist in making mining more efficient and profitable. This is especially important in opencast mines affected by water inflows that may negatively affect production and increase mining costs. We map and characterize the near‐
Sikelela Gomo, Ndamulelo Mutshafa, Jureya Dildar, Musa S. D. Manzi, Julie E. Bourdeau, Bojan Brodic, Ian James, Gordon R. J. Cooper, Raymond J. Durrheim   +8 more
wiley   +1 more source

Seismic imaging of the complex geological structures in the southwestern edge of the Western limb, Bushveld Complex through focusing pre‐stack depth migration of legacy 2D seismic data

Geophysical Prospecting, Volume 72, Issue 7, Page 2504-2519, September 2024.
Abstract We reprocessed a 50‐km long legacy 2D reflection seismic profile acquired in 1986, under a project funded by the National Geophysics Program to improve the delineation of complex geological structures that host the platinum‐bearing horizons (known as the UG2 reef; a chromitite horizon) on the south‐eastern edge of the Western limb of the ...
Mpofana Sihoyiya, Felix Hloušek, Musa S. D. Manzi, Moyagabo K. Rapetsoa, Stefan Buske, David Khoza   +5 more
wiley   +1 more source

MINERALOGICAL-GEOCHEMICAL AND STRUCTURAL FEATURES OF ULTRAMAFIC ROCKS AND CHROMITITES OF THE MALY BASHART CHROMITE-BEARING ZONE OF THE SOUTH KRAKA MASSIF (SOUTH URALS) [PDF]

Минералогия, 2017
Results of structural-petrological and mineralogical-geochemical studies of chromitite-bearing zone within spinel peridotites of the South Kraka ophiolite massif are presented.
D.E. Saveliev, I.A. Blinov, I.I. Musabirov   +2 more
doaj  

Multi‐geophysical methods for characterizing fractures in an open pit mine, western Bushveld Complex, South Africa

Geophysical Prospecting, Volume 72, Issue 5, Page 1950-1970, June 2024.
Abstract In the Bushveld Complex, South Africa, open pit mines are faced with a challenge of rock slope stability due to geological structures (fractures, faults and dykes) that compartmentalize the rock mass. Geophysical surveys (seismics, magnetics and electrical methods) were conducted in a 0.2 km2 area at Tharisa mine, with the goal to delineate ...
Moyagabo K. Rapetsoa, Sikelela Gomo, Musa S. D. Manzi, Ian James, Jureya Dildar, Mpofana Sihoyiya, Ndamulelo Mutshafa, Raymond J. Durrheim   +7 more
wiley   +1 more source

Probing the 186Os/188Os Precision Barrier: New Recommended Values for the DROsS Reference Material and an Assessment of Mixed 1011 and 1012 Ω Amplifier Arrays

Geostandards and Geoanalytical Research, Volume 48, Issue 1, Page 109-132, March 2024.
Key Points Most precise 184Os/188Os ratio yet measured: 0.0013036 ± 0.0000007. New recommended values for DROsS: 186Os/188Os = 0.1199319 ± 0.0000024, 187Os/188Os = 0.1609227 ± 0.0000022, 189Os/188Os = 1.219709 ± 0.000010, 190Os/188Os = 1.983793 ± 0.000011.
Pedro Waterton, Sarah Woodland, Graham Pearson, Simon Hansen Serre, Kristoffer Szilas   +4 more
wiley   +1 more source

Exhumed Serpentinites and Their Tectonic Significance in Non‐Collisional Orogens

Geochemistry, Geophysics, Geosystems, Volume 25, Issue 2, February 2024.
Abstract Exhumed serpentinites are fragments of ancient oceanic lithosphere or mantle wedge that record deep fluid‐rock interactions and metasomatic processes. While common in suture zones after closure of ocean basins, in non‐collisional orogens their origin and tectonic significance are not fully understood.
Damián Donoso‐Tapia, Kennet E. Flores, Celine Martin, Esteban Gazel, Jeffrey Marsh   +4 more
wiley   +1 more source

Podiform Chromitites in the Sorkhband Ultramafic Complex, Southern Iran: Evidence for [PDF]

Journal of Sciences, Islamic Republic of Iran, 2008
The podiform chromitite deposits of the Ordovician Sorkhband ultramafic complex, southwestern Makran, are the largest chromitite deposits in Iran. The Sorkhband ultramafic complex comprises of a northern part of dunite, podiform chromitite, olivine ...
doaj