Celadonite (K[Mg2+,Fe2+][Fe3+,Al3+](Si4O10)(OH2)) is a common void-filling mineral in ocean floor and ophiolite lavas that forms during low-temperature, off-axis, hydrothermal alteration. Its occurrence provides important information about the sink of K from seawater into upper oceanic crust. New age determinations for celadonitic samples ~20 km section Troodos ophiolite, along with published a...

Abstract This paper provides an overview of research on core from Oman Drilling Project Hole BT1B and the surrounding area, plus new data calculations, constraining processes in Tethyan subduction zone beneath Samail ophiolite. The area is underlain by gently dipping, broadly folded layers allochthonous Hawasina pelagic sediments, metamorphic sole ophiolite, Banded Unit peridotites at base mant...

High-precision dating of the metamorphic sole ophiolites can provide insight into tectonic evolution and subduction zone processes. To understand initiation beneath a young, well-preserved, well-characterized ophiolite, we performed coupled zircon laser-ablation inductively mass spectrometry (LA-ICP-MS) trace element analyses high-precision isotope dilution-thermal ionization (ID-TIMS) U-Pb on ...

The Urals is one of the reference mobile belts mafic type characterized by a wide development ophiolites which are associated with numerous deposits chromites significant industrial importance. In this regard, estimation age rocks ophiolite association will be useful for analyzing regularities formation chromite deposits. This work presented results dating chromite-bearing Kluchevskoy mafic–ult...

Studies of the high-pressure (HP) As Sifah eclogites in NE Saih Hatat Window, Oman, have used different combinations radiometric dating results (Ar/Ar, Sm-Nd vs. U-Pb, Rb-Sr) to interpret disparate tectonic models for timing, geometry, and cause continental subduction—including its relationship Samail Ophiolite. To determine timing subduction, we coupled petrochronological analyses major (garne...

The Spontang Ophiolite complex represents the most complete ophiolite sequence amongst South Ladakh ophiolites and comprises mantle rocks (depleted harzburgites, dunites minor lherzolites) as well crustal (basalt, isotropic gabbros, layered gabbros etc.). In present study, detailed geochemistry (whole rock mineral chemistry) Sr-Nd isotopic analyses of thirty-six ultramafic- mafic samples have b...

Abstract Recognition of any intra-oceanic arc-trench system (IOAS) could provide invaluable information on the tectonic framework and geodynamic evolution vanished ocean basin. The Tanjianshan Complex mafic-ultramafic rocks along North Qaidam ultra-high pressure metamorphic belt in NW China record subduction process Proto-Tethyan Ocean. Four lithotectonic units, including island arc, ophiolite,...

The Kızıldağ (Hatay) ophiolite in southern Turkey represents a complete, although fault-dissected, remnant of oceanic lithosphere that formed within the South Tethyan ocean during late Cretaceous. forms part Upper Cretaceous belt which includes Troodos (Cyprus), Baer-Bassit (Syria), Amanos (S Tukey), S Iran and Semail (Oman) ophiolites. Ion-probe (SIMS) dating seven samples crustal rocks (cumul...

Mantle-melt evolution processes in the earliest stage of subduction initiation (SI) are still ambiguous. Here, we report systematic petrogeochemical and physical records SI demonstrated by Gomsiqe massif, Mirdita ophiolite. The ultramafic body consists basal lherzolites, upper harzburgites containing lentoid dunites disseminated chromitites, displaying transition petrological (Cr# spinels range...