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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 ...
Carolina terrane - map. The Carolina Terrane, also called the Carolina Superterrane or Carolinia, is an exotic terrane [1] running ~370 miles (600 km) approximately North-South from central Georgia to central Virginia in the United States.
The Wrangellia Terrane (named for the Wrangell Mountains, Alaska) is a crustal fragment ...
The Cache Creek Terrane (alternately known as Cache Creek Melange) [1] is a geologic terrane in British Columbia and southern Yukon, Canada. The Cache Creek Terrane consists of Carboniferous to Lower Jurassic volcanic rocks , carbonate rocks , coarse clastic rocks and small amounts of ultramafic rock , chert and argillite .
[17] [18] The Wyoming craton can be differentiated from other Archean terranes by an enriched 207 Pb/ 204 Pb ratio that is hypothesized to represent early crustal extraction, as well as samarium and neodymium ratios providing rock ages of up to 4.0 Ga. [14] Investigation of lead and neodymium isotope ratios in the Grouse Creek block provide ...
Carolina plate – Exotic terrane from central Georgia to central Virginia in the United States; Churchill Craton – Geologic region in Canada (Canada) Farallon plate – Ancient oceanic plate that has mostly subducted under the North American plate (split into the Cocos, Explorer, Juan de Fuca, Gorda plates, Nazca plate, and Rivera plates)
The terrane is located at the junction between the Western Blue Ridge and the Eastern Blue Ridge Mountains. The unique lithology., [1] [2] [3] age, [4] and metamorphic history [5] of the MHT suggest an exotic terrane origin, unrelated to either the Laurentian or peri-Gondwanan terranes that make up most of
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).