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Ordovician ophiolite in Gros Morne National Park, Newfoundland Chromitic serpentinite, Bay of Islands Ophiolite, Lewis Hills, Newfoundland. An ophiolite is a section of Earth's oceanic crust and the underlying upper mantle that has been uplifted and exposed, and often emplaced onto continental crustal rocks.
The left-over ridge may either subduct or ride upward across the trench onto arc trench gap and arc terranes as a hot ophiolite slice. [8] A potential example is the progressive diminution of the Farallon plate off California. Ophiolite obduction would not be expected as the two plates share a dextral transform boundary.
Mirdita Ophiolite, middle Jurassic ophiolite in northern Albania between the Apulian and Pelagonian subcontinents in the Balkan Peninsula [2] Cap Corse ophiolite, Corsica , France Vourinos and Pindos Ophiolites in Northern Greece and their northern extensions (numerous ophiolite bodies) in Albania, Serbia and Bosnia
The Samail Ophiolite, also known as the Semail Ophiolite, is a large, ancient geological formation in Oman and the United Arab Emirates in the Arabian Peninsula. [2] It is one of the world's largest and best-exposed segments of oceanic crust , made of volcanic rocks and ultramafic rocks from the Earth's upper mantle that was overthrust onto the ...
Geologic map depicting the Smartville Complex (in brown) and other accreted terranes in California. [1]The Smartville Block, also called the Smartville Ophiolite, Smartville Complex, or Smartville Intrusive Complex, is a geologic terrane formed in the ocean from a volcanic island arc that was accreted onto the North American Plate during the late Jurassic (~160–150 million years ago).
One of the main drivers of this ophiolite dismemberment is the active San Andreas fault. Kinematic reconstructions of the ophiolite fragments show that the Jurassic Coast Range Ophiolite retains its original lithospheric coherence, meaning geologists are able to re-construct how the ophiolites have been moved by faults moved since its genesis.
VMS deposits are associated with geological environments dominated by mafic rocks, commonly ophiolite sequences. The Cyprus and Oman ophiolites host examples, and ophiolite-hosted deposits are found in the Newfoundland Appalachians, which represent classic districts of this subclass.
The Lizard comprises three main units; the serpentinites, the 'oceanic complex' and the metamorphic basement. Since the pioneering work of Bromley [1] [2] and Kirby [3] these suites have been understood to represent a slice through a section of ocean crust, including the upper level of the mantle, thrust onto continental crust.