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In geology, a terrane (/ t ə ˈ r eɪ n, ˈ t ɛr eɪ n /; [1] [2] in full, a tectonostratigraphic terrane) is a crust fragment formed on a tectonic plate (or broken off from it) and accreted or "sutured" to crust lying on another plate. The crustal block or fragment preserves its distinctive geologic history, which is different from the ...
The Keryneia Terrane occupies the northern margin of Cyprus, stretching from Cape Kormakitis in the west to Cape Andreas in the east. The terrane is a sequence of Permian to recent sediments. [3] The carbonate rocks are divided into the Dhikomo, the Hilarion and the Sykhari Formation. [3]
Legend: green: terrane (microplate) boundaries in the continental blocks; cyan: terranes of the oceanic plates; orange: terranes inside the mobile belts; blue: oceanic transform faults; red: fault zones in the continental and mountain belt domain; purple: main subduction zones and suture zones; orange dots: volcanoes. African plate
Obduction often occurs where a small tectonic plate is caught between two larger plates, with the crust (both island arc and oceanic) welding onto an adjacent continent as a new terrane. When two continental plates collide, obduction of the oceanic crust between them is often a part of the resulting orogeny. [citation needed]
The Yakutat Terrane is currently colliding with the continental margin below the central Gulf of Alaska. During the Neogene the terrane's western part was subducted after which a sediment wedge accreted along the northeast Aleutian Trench. This wedge incorporates sediment eroded from the continental margin and marine sediments carried into the ...
Diagram (modified from Fig 3.11 in Irwin, 1990) showing the depositional setting of the Franciscan Assemblage and the contemporaneous Great Valley Sequence,. [ 5 ] The Franciscan Complex is an assemblage of metamorphosed and deformed rocks, associated with east-dipping subduction zone at the western coast of North America. [ 6 ]
In structural geology, a suture is a joining along a major fault zone, of separate terranes, tectonic units that have different plate tectonic, metamorphic and paleogeographic histories. The suture is often represented on the surface by an orogen or mountain range.
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