supercontinent
অতিবিশাল মহাদেশ
definition
noun
The Tethys Sea also expanded westward, splitting Pangaea into the supercontinents of Gondwana (in the South) and Laurasia (in the North).
each of several large landmasses (notably Pangaea, Gondwana, and Laurasia) thought to have divided to form the present continents in the geological past.
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This in turn has important implications for our understanding of the depositional setting and distribution of the Permian coals that occur across much of the southern 'supercontinent' .
Recent palaeogeographical reconstructions of the Neoproterozoic North Atlantic tract relate formation of the Baltoscandian margin to the fragmentation of the 'supercontinent' Rodinia into Baltica, Laurentia and Siberia.
The salt was formed in a sea that existed when the 'supercontinent' Pangea broke up some 200 million years ago.
The southern Adelaide Fold Belt is part of a Neoproterozoic to Early Palaeozoic orogen that extended over 5000 km along the southeastern edge of the early Gondwana 'supercontinent' .
The Cambrian rifting event defined the outline shape of the southern part of Gondwana, and can be regarded as the initiation of the 'supercontinent' stage, which lasted until Jurassic break-up.
Of the three domains, the Eastern Domain sits farthest inboard, i.e. closest to the core of the former Gondwana 'supercontinent' .
During the Permian, India was a part of the Gondwanan 'supercontinent' .
At longer time-scales, plate tectonic activity appears quasi-periodic and self-organizes into the 'supercontinent' cycle.
The global context of glaciation in the Neoproterozoic is the massive first-order reorganization of the planet's geography, climate and ocean systems resulting from the breakup and dispersal of the 'supercontinent' Rodinia.
Geological evidence shows that all continents remained united as the 'supercontinent' Pangea during Triassic times.
Pangaea itself may have been formed by the aggregation of separate continents that drifted back together after the break-up of an older 'supercontinent' that existed about 550 million years ago.
These constraints envision a similar tectonic evolution with that of eastern Laurentia, which support models of a pre-Grenvillian 'supercontinent' with a long-lived, active margin that reached western Baltica.
Amalgamation of the late Palaeozoic 'supercontinent' Pangaea led to the collision of Gondwana with Laurasia forming the Variscan orogen.
Indeed, unique, almost bizarre, tectonic mechanisms are possible when dealing with 'supercontinents' .
During this period, the world's land was collected into two 'supercontinents' , Gondwana and Euramerica.
The Tethys Sea also expanded westward, splitting Pangaea into the 'supercontinents' of Gondwana (in the South) and Laurasia (in the North).
One hot spot theory states that the 'supercontinents' move over top of a hot spot that heats the crust, causing it to uplift, thin, and eventually pull apart.
First it formed two 'supercontinents' , Laurasia and Gondwanaland.
The movement of the two resulting 'supercontinents' was caused by sea floor spreading at the midocean ridge lying at the bottom of the Tethys Sea, the body of water between Gondwana and Laurasia.
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