Silurian and lower Devonian sedimentary successions are uncommon within the remnants of Gondwana. |
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The Elephant Bird's Tale is a tale of Gondwana, and of continental drift or, as it is now called, plate tectonics. |
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The Tethys Sea also expanded westward, splitting Pangaea into the supercontinents of Gondwana and Laurasia. |
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When New Zealand split away from the supercontinent Gondwana some 80 million years ago, its flora and fauna were left to develop in isolation. |
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During this period, the world's land was collected into two supercontinents, Gondwana and Euramerica. |
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However, these rocks do record the earliest presence of dinosaurs in the form of numerous trackways in southwestern Gondwana. |
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Of the three domains, the Eastern Domain sits farthest inboard, i.e. closest to the core of the former Gondwana supercontinent. |
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It is generally agreed that the autochthonous sedimentary sequences were deposited in the northern margin of Gondwana. |
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Amalgamation of the late Palaeozoic supercontinent Pangaea led to the collision of Gondwana with Laurasia forming the Variscan orogen. |
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The collision between Gondwana and Laurasia led to the formation of the Appalachian belt in North America and the Hercynian Mountains in Europe. |
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When the ratite birds first roamed Gondwana, they could walk from any of the places where they later dwelt, to any other. |
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As envisaged by Robertson et al. continental fragments rifted from Gondwana in Triassic time. |
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Preserved sediments record deposition in a periglacial to ice-margin lake that contains one of the earliest assemblages of freshwater arthropods from Gondwana. |
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At the end of the Ordovician, Gondwana finally stopped its migration to the South Pole. |
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South America, Africa, India, Australia, and Antarctica were joined into the Southern Hemisphere continent of Gondwana. |
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The Menderes Massif is part of the Menderes-Tauride Block, a post-Permian microcontinent, which is allochthonous with respect to both Eurasia and Gondwana. |
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The location and role of the Pan-African suture within East Gondwana continues to be debated. |
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Australia developed a unique fauna when it broke away from the super-continent Gondwana more than 50 million years ago. |
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The Cretaceous Period began with Earth's land assembled essentially into two continents, Laurasia in the north and Gondwana in the south. |
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So does the journal Gondwana Research but its logo consists of a bunch of unfamiliar blobs snugly cuddled against each other. |
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Attempts were also made to define the geological characteristics of the suture zone between West and East Gondwana. |
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Major Cambrian and early Ordovician tectonism affected large areas of Gondwana in what are now Australia, Antarctica, and Argentina. |
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Some authors further consider that East Gondwana itself formed at that time, assembling several small crustal blocks. |
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The study will begin by preparing a database of sediment-hosted base metal deposits in Western Gondwana. |
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At the onset of the period there existed two supercontinents, Gondwana in the south and Laurasia in the north. |
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The preparation of a mineral deposit map of sediment-hosted base metal deposits of Western Gondwana is planned. |
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To the east of Laurentia, the Siberian craton was positioned just south of the paleoequator between Laurentia and the western coast of Gondwana. |
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Continental drift has shown that India, Australia, the Antarctic, Madagascar, Southern Africa and America were part of a land called Gondwana. |
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In contrast, the northern basins are considered transtensional rifts that propagated southwards from the opposite margin of Gondwana. |
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Glaciation of Africa resulted in a major drop in sea level, killing off all life that had established along coastal Gondwana. |
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At any event, the far southern continental margins of Antarctica and West Gondwana became increasingly less barren. |
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In Gondwana, England and Wales were largely submerged under a shallow sea studded with volcanic islands. |
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Many Indian species descend from taxa originating in Gondwana, from which the Indian plate separated more than 105 million years before present. |
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In the process, the Iapetus Ocean between Gondwana, Baltica and Laurentia closed. |
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During the Ordovician, the southern continents were collected into Gondwana. |
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Gondwana started the period in equatorial latitudes and, as the period progressed, drifted toward the South Pole. |
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Initially, sea levels were high, but as Gondwana moved south, ice accumulated into glaciers and sea levels dropped. |
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As with North America and Europe, Gondwana was largely covered with shallow seas during the Ordovician. |
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If you look up Gondwana, you will see in the Late Triassic an area between Gondwana and Laurasia called the Tethys Sea. |
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It was, like the various continents, a part of the supercontinent of Gondwana. |
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During this time, the supercontinent Pannotia begins to break up, most of which later became the supercontinent Gondwana. |
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Towards the end of the Permian period, continued warming led to a dry, hot climate over much of Gondwana. |
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As a result of continued warming, the polar ice caps melted and much of Gondwana became a desert. |
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Glacially sculptured landforms now predominate, as they must have some 300 million years ago, in an earlier period of continental glaciation of all of Gondwana. |
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In addition, new collisional events led to the formation of Gondwana, a supercontinent composed of what would become Australia, Antarctica, India, Africa, and South America. |
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In contrast, the bulk of Gondwana was below 30° South latitude and experienced colder conditions that allowed the formation of continental glaciers. |
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About 167 million years ago, the great southern continent called Gondwana began to break apart. |
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A Memorandum of Understanding to promote financial literacy among the extensive staff of Gondwana Collection was signed last week. |
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The Salamat and Doseo Basins formed during the break-up of the super continent of Gondwana in the Mesozoic Era. |
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The lodge is part of the Gondwana Collection which has supported the professor's research project for years. |
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Early in the Mesozoic, Gondwana split from its northern counterpart, Laurasia, to form the Tethys seaway, and the equatorial current became circumglobal. |
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It consisted of a group of northern continents collectively referred to as Laurasia and a group of southern continents collectively referred to as Gondwana. |
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In 1937 Alexander L. Du Toit, a South African geologist, modified Wegener's hypothesis by suggesting two primordial continents: Laurasia in the north and Gondwana in the south. |
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Some areas of Gondwana were tectonically active during Permian time, as evidenced by extensive basaltic, andesitic, and other volcanic rocks in eastern Australia. |
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Whereas Wegener had postulated a single supercontinent, Pangea, Du Toit theorized that there were two such great landmasses: Laurasia in the north and Gondwana in the south, separated by an oceanic area called Tethys. |
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The breakup of Gondwana occurred in stages. |
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Also during the Devonian Period, Gondwana began impinging upon Laurussia. |
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These zones reflect various paleogeographic settings within and marginal to the Iapetus Ocean, which separated ancient North America from Gondwana in the early Paleozoic. |
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Besides conducting a geological survey to clarify the East-West Gondwana collision and dispersion, they will try to recover the Cenozoic glacial history and global environmental changes through a geomorphological survey. |
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The Pacific margin of Gondwana is a long-lived Andean-type active margin, although there has been a great deal of strike-slip motion and opening of marginal basins in some provinces. |
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Recent studies in the New England Fold Belt of Eastern Australia revealed new evidence for the tectonic evolution of the eastern margin of Gondwana. |
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Case histories focus on biogeographic relationships, stratigraphic significance, and palaeoenvironmental signals of important microand macro-fossil assemblages in the Mesozoic Western Gondwana and South Atlantic. |
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The Caledonia Zone is generally considered to represent a crustal fragment rifted from the margin of Gondwana during opening of the Early Paleozoic Iapetus Ocean. |
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It was pointed out that the late Pan-African events within East Gondwana were principally a rejuvenation along the boundary zone of continental blocks within East Gondwana. |
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A major focus of IGCP 450 will be the development of a metallogenic model for this mineralisation, because of its bearing on exploration for similar deposits elsewhere in Western Gondwana. |
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More importantly, the first arthropods went ashore to colonize the empty continent of Gondwana. |
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By the end of the Ordovican, Gondwana was at the south pole, early North America had collided with Europe, closing the Atlantic Ocean. |
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During the Middle Jurassic epoch, Pangaea began to separate into Laurasia and Gondwana, and the Atlantic Ocean formed. |
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These have included Laurasia, Gondwana, Vaalbara, Kenorland, Columbia, Rodinia, and Pangaea. |
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Geologists tend to study plate tectonics, meteorites from outer space, and resources from the breakup of the supercontinent Gondwana. |
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Consequently, trade winds moved water away from Gondwana towards Laurasia in the northern Panthalassa Equatorial Current. |
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The South Polar Current then completes the gyre as the Southwestern Gondwana Current. |
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While all this was happening, Gondwana drifted slowly towards the South Pole. |
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The second step in the formation of Pangaea was the collision of Gondwana with Euramerica. |
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Meanwhile, southern Europe broke off from Gondwana and began to move towards Euramerica across the newly formed Rheic Ocean. |
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In the Devonian Period, Gondwana itself headed towards Euramerica, causing the Rheic Ocean to shrink. |
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In the early Carboniferous movement of Gondwana to the north and its convergence with the Euramerica basin decreased in size. |
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During the Carboniferous, Laurasia and Gondwana collided and thus began the formation of the supercontinent Pangea. |
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All six groups of diamonds were found in areas that would once have lined the edge of the ancient supercontinent Gondwana. |
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Shaking hands are NamPost CEO Festus Hangula and Gondwana MD Mannfred Goldbeck. |
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Contrary to previous supposition, the evolutionary speciation of this genus is no longer thought to have occurred with the breakup of Gondwana through continental drift. |
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The slow merger of Baltica and Laurentia, and the northward movement of bits and pieces of Gondwana created numerous new regions of relatively warm, shallow sea floor. |
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The Jurassic North Atlantic Ocean was relatively narrow, while the South Atlantic did not open until the following Cretaceous period, when Gondwana itself rifted apart. |
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But as dinosaurs were diversifying during the Jurassic, geological forces within the planet were dividing the world into Laurasia, in the north, and Gondwana, in the south. |
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Geologically, the Indian subcontinent is related to the land mass that rifted from Gondwana and merged with the Eurasian plate nearly 55 million years ago. |
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During the Triassic, the Earth's continents were united as Pangaea, with one southern landmass known as Gondwana and one northern one known as Laurasia. |
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By the beginning of the Jurassic, the supercontinent Pangaea had begun rifting into two landmasses, Laurasia to the north and Gondwana to the south. |
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Gondwana had by that time neared the south pole and was largely glaciated. |
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The small continent Avalonia separated from Gondwana and began to move north towards Baltica and Laurentia, opening the Rheic Ocean between Gondwana and Avalonia. |
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With the supercontinent Gondwana covering the equator and much of the southern hemisphere, a large ocean occupied most of the northern half of the globe. |
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Part three describes the time when amphibians and reptiles in North America, the Elgin region, and Gondwana began to resemble modern-day creatures. |
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Gondwana was glaciated as much of it was situated around the south pole. |
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By this time, Gondwana was positioned near the South Pole and glaciers were forming in Antarctica, India, Australia, southern Africa and South America. |
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Then in the Middle Cretaceous, Gondwana fragmented to open up the South Atlantic Ocean as South America started to move westward away from Africa. |
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The Earth was generally cold during the early Cambrian, probably due to the ancient continent of Gondwana covering the South Pole and cutting off polar ocean currents. |
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