Results 1 to 10 of about 12,638 (229)

An origin of ultraslow spreading ridges for the Yarlung-Tsangpo ophiolites [PDF]

open access: yesFundamental 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.
Chuan-Zhou Liu   +8 more
doaj   +2 more sources

Archean versus Phanerozoic oceanic crust formation and tectonics: Ophiolites through time

open access: yesGeosystems 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.
Harald Furnes, Yildirim Dilek
doaj   +1 more source

Andaman Ophiolite: An Overview [PDF]

open access: yes, 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

Ultramafic Rocks and Their Alteration Products From Northwestern Allaqi Province, Southeastern Desert, Egypt: Petrology, Mineralogy, and Geochemistry

open access: yesFrontiers 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
doaj   +1 more source

MINERALOGICAL-GEOCHEMICAL FEATURES OF MAGNETITE OCCURRENCES IN SERPENTINITES OF THE KALKAN AREA (MAIN URALIAN FAULT ZONE, SOUTH URALS) [PDF]

open access: yesМинералогия, 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
doaj   +1 more source

The ephemeral history of Earth’s youngest supra-subduction zone type ophiolite from Timor

open access: yesCommunications 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
doaj   +1 more source

MAGMATIC ROCKS OF THE TEKTURMASS ACCRETIONARY COMPLEX, CENTRAL KAZAKHSTAN: GEOLOGICAL POSITION AND GEODYNAMIC SETTINGS OF FORMATION

open access: yesГеодинамика и тектонофизика, 2022
The paper provides an overview of the geological structure and presents new data on petrography and geochemistry of igneous rocks of the Tekturmas accretionary complex (TAC).
A. V. Gurova   +4 more
doaj   +1 more source

Geodynamic setting and models of the emplacement of ophiolitic allochthons in the structure of accreted island arcs of the pacific north-western framing

open access: yesИзвестия высших учебных заведений: Геология и разведка, 2019
Based on the model of an oceanic island-arc breakup followed by accretion of rear and frontal parts of an arc to a continental margin of North-East Asia, the geodynamic nature of the ophiolites of Kamchatka and South Koryakia has been considered.
V. D. Chekhovich, A. N. Sukhov
doaj   +1 more source

Ophiolite complex of Piedmont-Ligurian basin (Northern Apennines)

open access: yesГеофизический журнал, 2023
The Northern Apennines contain remnants of the Piedmont-Ligurian Basin (PLB) or ocean, which during the Late Mesozoic time (mainly in the Jurassic) separated the paleo-Europe (Iberian plate) from the southern paleocontinent Adria at the Africa promontory.
T. Yegorova, A. Murovskaya
doaj   +1 more source

Modelling the closure of narrow oceanic basins by means of numerical simulations [PDF]

open access: yesTehnika, 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

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