Ophiolite and Metamorphic Rocks of the Oman Mountains: A Petrographic Atlas

May 13, 2019 - Oxidation and carbonate veins in the serpentinite, the Oman ophiolite. Serpentinized (dark) olivine is undergoing oxidation (red-brown) and carbonate dike (white) formation. The Semail Ophiolite of the Hajar Mountains of Oman and the United Arab Emirates is a large slab of oceanic crust, made of volcanic rocks and ultramafic rocks from the Earth's upper mantle, that was Permo-Triassic Deposits of the Oman Mountains: from Basin ...

Abstract: The metamorphic rocks associated with the Semail ophiolite in the Oman Mountains represent two different facies series. Amphibolites and greenshists at the base of the Semail ophiolite constitute a metamorphic sole formed in a high-temperature, low- pressure environment. Eclogites, blueschists, lawsonite schists and other metasediments occuring at different structural levels in the

Geology, petrology and tectonomagmatic evolution …

The ophiolite is underlain by a sole of amphibolite- to granulite-facies metamorphic rocks that have traditionally been attributed to over-thrusting of the hot ophiolite lithosphere during initial emplacement (Boudier et al., 1988, Hacker et al., 1996); however, peak metamorphic pressures of 11–13 kbar estimated for granulite mineral assemblages in the sole (Cowan et al., 2014, Gnos, 1998

The Semail Ophiolite of the Hajar Mountains of Oman and the United Arab Emirates is a large slab of oceanic crust, made of volcanic rocks and ultramafic rocks from the Earth's upper mantle, that was overthrust onto continental crust as an ophiolite.