Terranes

Terranes

A terrane in geology is a shorthand term for a tectonostratigraphic terrane, which is a fragment of crustal material formed on, or broken off from, one tectonic plate and accreted or "sutured" to crust lying on another plate. The crustal block or fragment preserves its own distinctive geologic history, which is different from that of the surrounding areas – hence the term "exotic" terrane. The suture zone between a terrane and the crust it attaches to is usually identifiable as a fault.

Older usage of terrane simply described a series of related rock formations or an area having a preponderance of a particular rock or rock groups.

Read more about Terranes:  Overview

Other articles related to "terranes, terrane":

Continental Collision - Deep Subduction of Continental Crust
... crust returns to the surface as ultra-high pressure (UHP) metamorphic terranes, which contain metamorphic coesite and/or diamond plus or minus unusual silicon-rich ... Examples of UHP terranes are known from the Dabie–Sulu belt of east-central China, the Western Alps, the Himalaya of India, the Kokchetav Massif of Kazakhstan, the Bohemian ... Most UHP terranes consist of an imbricated sheets or nappes ...
Materials Within An Accretionary Wedge
... Accretionary wedges and accreted terranes are not equivalent to tectonic plates, but rather are associated with tectonic plates and accrete as a result of tectonic collision ... (such as Madagascar or Japan), known as terranes, are transported toward the subduction zone and accreted to the continental margin ... beneath the western margin of North America has resulted in several collisions with terranes, each producing a mountain-building event ...
Lachlan Fold Belt - Characteristics - Structure
... Other faults separate the different terranes making up the orogen ... The concept of terranes has been applied to the LFB with the term Lachlan Superterrane being used for the Lachlan Mudpile ... In Victoria van den Berg used the terms Whitelaw Terrane for the Western Lachlan, and Benambra Terrane for the Central and Eastern Lachlan ...
Cadomian Orogeny - Models
... North Armorican Massif was put together from a series of terranes 540 million years ago, their joins are the shear zones ... The terranes are known as St Brieuc, St Malo and Mancellian terranes ...
Geology Of New Zealand - Basement Rocks
... The provinces are further divided into terranes – large slices of crust with different geological histories that have been brought together by tectonic activity (subduction and ... basement rocks are subdivided into the Western Province Buller and Takaka terranes, and the Eastern Province Brook Street, Murihiku, Maitai, Caples, Torlesse Composite (Rakaia and Pahau) and Waipapa Composite (M ... In general, the sedimentary basement terranes become younger from West to East across the country, as the newer terranes were scraped off the subducting paleo-Pacific Plate ...