The tectonic events began with the Penobscottian orogeny in the Cambrian Period that affected northwestern to north-central Maine. |
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The Caledonian orogeny in East Greenland was the result of the collision of Baltica with the margin of Eaurentia. |
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Avalonia drifted rapidly northwards, opening the Rheic ocean until it collided with Laurentia in the Silurian during the Caledonian orogeny. |
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The two rift sequences were subsequently juxtaposed by displacement on the Sgurr Beag thrust and interfolded during the Caledonian orogeny. |
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Granitoids are abundant in the Iberian Massif, and result from melting of the continental crust thickened during the Variscan orogeny. |
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The Dalradian rocks in Arran were initially folded during the Caledonian orogeny into a recumbent structure known as the Aberfoyle synform. |
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Towards the end of the orogeny, several north-south-trending strike-slip faults were active. |
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Several allochthons were thrust onto the Western Gneiss Complex during the Caledonian orogeny. |
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These data clearly demonstrate that parts of the Scottish basement underwent major thick-skinned tectonics during the Grenvillian orogeny. |
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The collision of North America with the Avalon microcontinent during the Devonian Period caused the Acadian orogeny. |
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Ductile thrusts that were active during the Ordovician-Silurian Caledonian orogeny divide the Moine into a scries of major nappes. |
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These periods of mountain building, or orogeny, have produced complex structures of igneous, sedimentary and metamorphic rocks. |
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This could be synchronous with the emplacement of nearby Devonian plutons and the F1 and F2 folds, both produced by the Acadian orogeny. |
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A Devonian CRM is interpreted to be related to hydrothermal fluids associated with Devonian volcanic rocks or to fluids triggered by late stages of the Caledonian orogeny. |
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Following the Columbian orogeny, the third cycle of basin fill was dominated by sediments derived from the west and filling to the east. |
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Cimmeria begins its collision with Laurasia to form the Cimmerian orogeny. |
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These gneiss complexes contain Caledonian eclogites that attest to the deep burial of these rocks in the over-thickened crust resulting from the Caledonian orogeny. |
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The Andean orogeny has three distinct segments, each of which developed in a different geologic setting. |
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Together with the Appalachian, Caledonian and Variscan orogens, the Uralian orogeny contributed to the assembly of the late Palaeozoic supercontinent of Pangaea. |
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Subduction must therefore have taken place beneath a microcontinent or an island-arc that later collided with Baltica to produce the early Caledonian Finnmarkian orogeny. |
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The Permo-Carboniferous Trough of Northern Switzerland formed during the late phase of the Variscan orogeny, about 245 million years ago. |
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The alpine orogeny was followed by the uplift of the Aar Massif, which is still occurring to some extent today. |
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The regions immediately east of the Andes experience a series of changes resulting from the Andean orogeny. |
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The geology of the archipelago is characterized by the effects of the Andean orogeny and the repeated Pleistocene glaciations. |
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The Matterhorn is an example of the ongoing orogeny and shows evidence of great folding. |
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Some of the species of moths and insects show evidence of having been indigenous to the area from as long ago as the Alpine orogeny. |
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Subducting plates can lead to orogeny by bringing oceanic islands, oceanic plateaus, and sediments to convergent margins. |
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Subduction may also cause orogeny without bringing in oceanic material that collides with the overriding continent. |
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Coincidentally they exist in three parallel folds or chains surviving from the orogeny. |
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It was formed from the late Oligocene to middle Miocene, during the Alpine orogeny. |
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The Wear rises in the east Pennines, an upland area raised up during the Caledonian orogeny. |
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Current understanding has it that the Caledonian orogeny encompasses a number of tectonic phases that can laterally be diachronous. |
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The collision of a terrane with the eastern edge of the continent during the Taconic orogeny caused the continental margin to flex and the sedimentary basin to deepen. |
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One mountain-building event, known as the Nevadan orogeny, resulted in the emplacement of massive igneous and metamorphic rocks from Alaska to Baja California. |
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It is now considered to have been a polyphase orogeny consisting of many disparate pulses of deformation that varied in intensity and age from place to place in western North America. |
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The collision of these two landmasses resulted in the Caledonian orogeny. |
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Throughout much of Europe there is evidence of extensive thrusting, implying that there was appreciable thickening of the continental crust and the formation of a Tibetan-style plateau across the Hercynian orogeny. |
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C taken literally, the guideline limits suitable rivers to only those whose courses have been altered during a major era of orogeny or glaciation. |
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During the alpine orogeny, which affected the Grimsel area around 40 million years ago, the rocks of the Aar Massif were passed over by the northward-moving alpine nappes and subsided by around 12 kilometres. |
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Differences in sedimentation in the Early and Middle Devonian in the Northern and Eastern East European craton can, most probably, be explained by the appearance of the Late Caledonian orogeny. |
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Along the major thrust fault of the Variscan orogeny, there are over 30 thermal springs in Aachen and Burtscheid. |
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The Caledonian orogeny is named for Caledonia, the Latin name for Scotland. |
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The Caledonian orogeny was one of several orogenies that would eventually form the supercontinent Pangaea in the Late Paleozoic era. |
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In North America, the collision between Avalonia and Laurentia is called the Acadian orogeny. |
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The basin closed when these Caledonian deformed terranes were accreted again to Laurussia during the Hercynian orogeny. |
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The compression and orogeny continue today, as shown by the ongoing raising of the mountains a small amount each year and the active volcanoes. |
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In western Norway, these gneisses were again deformed during the Caledonian orogeny ca. |
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Similar geologic evidence can be seen in the Alpine orogeny of Europe, where the movement of the African plate raised the Alps. |
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Evidence for Variscan orogeny is seen in the sheared rock and cleaved shales. |
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The processes of orogeny can take tens of millions of years and build mountains from plains or from the seabed. |
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Frequently, rock formations that undergo orogeny are severely deformed and undergo metamorphism. |
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Due to geological folding of the Alpine orogeny, the strata in the main section of the Bay are vertical, with younger rocks to the north. |
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In the Late Oligocene, the motion was reversed and the Apennine Mountains' orogeny took place. |
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Due to geological folding of the Alpine orogeny, the strata in the main section of the bay are near vertical, with younger rocks with progressively lower dips to the west. |
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The orogeny of an orogen is only part of the orogen's orogenic cycle. |
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The fold formed during the Alpine orogeny, from the late Oligocene to middle Miocene as an uplifted form of the Weald basin through inversion of the basin. |
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The Paratethys was separated from the Tethys with the formation of the Alps, Carpathians, Dinarides, Taurus and Elburz mountains during the Alpine orogeny. |
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This event is the Caledonian orogeny, a spate of mountain building that stretched from New York State through conjoined Europe and Greenland to Norway. |
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When I asked Geoff Milnes what age the rocks were before they were turned into uncompromising gneisses by the Alpine orogeny he made a rueful face. |
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In the Pennsylvanian subperiod of the Carboniferous geological period, these rock layers were narrowed and folded as a result of the Variscan orogeny. |
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The Caledonian orogeny is named for Caledonia, a Latin name for Scotland. |
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Further collisions caused the Variscan orogeny in the Devonian and Carboniferous periods, forming the hills of Munster, southwest England, and southern Wales. |
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