In the Trinity ophiolite, California, USA, several mafic-ultramafic plutons intruded a peridotitic host 435 to 405 m.y. ago in tectonic setting interpreted as an arc-related spreading centre. One of these intrusions, Bear Creek area, exposes basal ultramafic cumulates with igneous layering comprising alternation uncommonly thin (down few mm) layers dunite, peridotite and pyroxenite that might b...

We quantified mineral proportions in listvenite (completely carbonated peridotite) Hole BT1B drilled across the basal thrust of Samail ophiolite by International Continental Scientific Drilling Project Oman using 3D X-ray Computed Tomography (XCT). analyzed >250,000 XCT images from a continuous ?200 m core. Histograms intensity attenuation each core-slice image were fitted assuming that listven...

The Semail Thrust in the Oman-UAE mountains is mapped along base of Ophiolite, a 10–15 km thick sequence Cenomanian oceanic crust and upper mantle emplaced from NE to SW onto previously passive, Mid-Permian continental margin Oman. juxtaposition ophiolite with range different rock types sourced depths suggest complex tectonic history for this major fault shear zone. Here we summarize previous w...

the noorabad-kermanshah ophiolite is part of eastern mediterranean-zagros-oman tethyan ophiolites, that this area is located in south-southwest of the main zagros thrust fault. this ophiolite consists of peridotites, serpentinites and pegmatite gabbros as mantle sequence whereas crustal sequences are composed of locally layered gabbros, isotropic gabbros, sheeted dike complex, basaltic to andes...