Search results
Results from the WOW.Com Content Network
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 Hunic superterrane is a terrane that is now attached to Europe and Asia. At the end of the Ordovician or beginning of the Silurian it separated from Gondwana and joined Laurasia at the beginning of the Carboniferous, at the time of the Variscan orogeny. Rather than being a single block, there were apparently two groups of blocks, the ...
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 .
Quesnellia, or the Quesnel terrane, is a terrane in British Columbia, Canada; constituent of the Canadian Cordillera. It formed volcanic arc during the Mesozoic era, in the Triassic and Jurassic periods. [1] The Quesnel terrane forms part of the Intermontane superterrane along with the Stikinia and Cache Creek terranes. [2]
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).
The Yukon–Tanana terrane (YTT) is a tectonic terrane that extends from central Alaska through central Yukon and into northern British Columbia, Canada and Southeast Alaska, USA. Extending over 2000 km, the YTT is the largest tectonostratigraphic terrane in the northern North American Cordillera . [ 1 ]
The terms "Cathaysia", "Cathaysialand" and "Cathaysia Terrane" have been used by various authors for different continental blocks or terranes and assemblages thereof. . During the Devonian, the South China and Indochina continents had separated from Gondwana and they collided during the Carboniferous to finally form a superterrane in the P
The Central Highlands terrane in Scotland, also known as the Grampian terrane, is a sequence of early Paleozoic metamorphic rocks containing many igneous intrusions. It stretches from the Great Glen Fault, south-east down to the Highland Boundary. The terrane contains mostly gabbro and gneiss that show intrusions of granite and dolerite.