Results 1 to 10 of about 5,853 (215)
An origin of ultraslow spreading ridges for the Yarlung-Tsangpo ophiolites [PDF]
Fundamental Research, 2022 As relics of ancient ocean lithosphere, ophiolites are the most important petrological evidence for marking the sutures and also play a key role in reconstructing plate configuration.
Chang Zhang, Chuan-Zhou Liu
exaly +4 more sources
Archean versus Phanerozoic oceanic crust formation and tectonics: Ophiolites through time
Geosystems and Geoenvironment, 2022 A global compilation of structural, lithological, and geochemical data on a selection of Archean, Proterozoic and Phanerozoic magmatic complexes, interpreted as ophiolites, is presented.
exaly +3 more sources
Modelling the closure of narrow oceanic basins by means of numerical simulations [PDF]
Tehnika, 2021 Numerical simulations represent an established approach in investigation of geodynamic processes in the Earth's interior and it is applied to a vast variety of geological problems. The closure of a narrow oceanic realm is modelled in this paper. Firstly,
Stanković Nikola B.
doaj +1 more source
Andaman Ophiolite: An Overview [PDF]
, 2020 The Andaman Ophiolite remained little explored for long but recent studies yielded important first-order findings that hold promise for further research. Here we summarise these first-order constraints on the structure, geochemistry, and evolution of the Andaman Ophiolite and identify key frontiers for future research.
Bandyopadhyay, Debaditya +7 more
openaire +4 more sources
Frontiers in Earth Science, 2022 The ophiolitic rocks, island arc metasediments, and granitic rocks are encountered in the study of the Allaqi province. The present study concentrated on ultramafic rocks and their various forms of hydrothermal alteration.
A. M. Abdel-Rahman +10 more
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MINERALOGICAL-GEOCHEMICAL FEATURES OF MAGNETITE OCCURRENCES IN SERPENTINITES OF THE KALKAN AREA (MAIN URALIAN FAULT ZONE, SOUTH URALS) [PDF]
Минералогия, 2021 Chemical and mineralogical composition of magnetite occurrences from serpentinites of the Kalkan mélange area of the Main Uralian Fault zone (South Urals) is studied. Abundant Cu minerals including native copper, Cu sulfides (covellite, bornite, minerals
D.E. Saveliev
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The ephemeral history of Earth’s youngest supra-subduction zone type ophiolite from Timor
Communications Earth & Environment, 2023 Ophiolites occur widely in orogenic belts, yet their origins remain controversial. Here we present a modern example with a geodynamic model from Timor, eastern Indonesia, where Earth’s youngest supra-subduction zone (SSZ)-type ophiolitic fragments are ...
Yu-Chin Lin +4 more
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Geochemistry, Geophysics, Geosystems, 2022 The deep ocean is generally considered to have changed from anoxic in the Precambrian to oxygenated by the Late Paleozoic (∼420–400 Ma) due to changes in atmospheric oxygen concentrations.
Daniel A. Stolper +5 more
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Геодинамика и тектонофизика, 2021 The Geochemical and mineralogical studies showed, that harzburgites of the Chagan-Uzun massif are restites with a degree of partial melting 15–20 %, which formed at temperatures 1520–1420 °С under the conditions of the mid-oceanic ridge and transformed ...
V. A. Simonov +3 more
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Geochemistry, Geophysics, Geosystems, 2023 A tectonic window into the upper 2,000 m of oceanic crust generated at the superfast spreading (∼142 mm/yr) southern East Pacific Rise exposes a continuous layered structure of basaltic lavas and sheeted dikes over gabbroic rocks.
J. A. Karson +8 more
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