Who proposed that all of the present continents were once joined together in a single supercontinent called Pangaea?…
Pangaea: The primeval supercontinent, hypothesized by Alfred Wegner, that broke apart and formed the continents and oceans as we know them today; consisted of two parts- a northern Laurasia and a southern Gondwana.…
A. He proposed a hypothesis that would account for the close “fit” of the shapes of the facing continents. His continental drift hypothesis required a preexisting super continent, Pangaea, which split into the continents of the world.…
On the evening of September 15, 2017, Jackson Johnson, the father of a 10-month old baby, suddenly had a blood clot while riding his bicycle. He was found on the sidewalk in the countryside of Mississauga, Ontario.…
Over the years proceeding the birth of the theory, increasingly convincing evidence has been gathered for proof of the theory of plate tectonics. In 1912, Alfred Wegner proposed the theory that continents are sat upon tectonic plates and that these plates are slowly drifting around the Earth (continental drift). Since then, volcanic and seismic events have made up a large proportion of the evidence towards the theory, including volcanic eruptions at both constructive and destructive boundaries, hotspots, sea floor spreading, paleomagnetism, and seismic earthquakes. However, not all of the evidence supporting plate tectonics comes from volcanic and seismic events; other evidence includes continental fit, geological evidence, biological evidence, climatological evidence and other activity at destructive plate margins.…
The plate tectonics theory was made by a German named Alfred Wegener. He stated that a single continent existed about 300 million years ago named Pangaea and that it split into two continents of Laurasia in the north and Gondwanaland in the south. Today’s continents were formed by further splitting of the two masses.…
In 1912, Alfred Wegener published his theory that a single super continent named Pangaea once existed about 300 million years ago. He proposed that Pangaea then later split into two continents of Laurasia in the north and Gondwanaland in the south and that today’s continents were the result of further splitting of these two land masses. Where the plates split are known as plate boundaries. Wegener’s theory of continental drift was supported by both geological and biological evidence that these areas were once joined. The geological evidence included the rock sequences in Northern Scotland closely agreeing with those found in East Canada, indicating that they were laid down under the same conditions in one location as well as the obvious jig saw fitting appearance of today’s continents, in particular, the bulge of south America fitting into the indent below west Africa. The biological evidence comprised of fossil findings linking different continents. Fossil brachiopods found in Indian limestones were comparable with similar fossils in Australia and the fossil remains of Mesosaurus’ were found in both South America and southern Africa. It is unlikely that the same reptile could have developed in both areas or that it could have migrated across the Atlantic. Despite the evidence, Wegener’s theory was unable to explain how continental movement had occurred. However from the 1940’s additional evidence accumulated after the discovery of the mid-Atlantic ridge and huge oceanic trenches. Examination of the ocean crust either side of the mid-Atlantic ridge suggested that sea-floor spreading was occurring. Magnetic surveys of the ocean floor in the 1950’s, showed regular patterns of paleomagnetic striping surrounding the ridges. It was discovered that when lava erupts on the ocean floor, magnetic domains within iron rich minerals in the lava are aligned with the…
Pangaea was a supercontinent that formed around 300 million years ago and began to break apart around 200 million years ago, during the times of the Pangaea of the land was on one continent and all of the sea was one giant ocean. This theory was coined during a 1927 symposium discussing Alfred Wegener’s theory of continental drift, he posed the idea that prior to the breaking up and drifting to their present locations, all of the continents had at one time been a single supercontinent as seen pictured on the right. The breaking and forming of the supercontinents appears to have been cyclical through the Earth’s history. Alfred Wegeners theory talked about how icebergs may behave the same as moving continents, and how therefore plate tectonics caused the movement of continental crust.…
The Plate Tectonic Theory developed in the late 1960’s, when people noticed how continents either side of the Atlantic Ocean seemed to almost fit together. Francis Bacon, an English Philosopher was aware of this as early as 1620. Topographical and geological evidence built up and allowed Alfred Wegener to publish a theory in 1912, suggesting that the continents were once all joined together in a supercontinent he called Pangaea. Wegener proposed that at some time, the land masses had drifted apart until they occupied their current positions on the globe. There was lots of evidence to support his theory including Continental Fit. Sometimes continents, such as the west of Africa and the eastern seaboard of South America, seem to fit together if placed beside each other. This is particularly true is the continental shelves are taken into account as the true edges of the land masses. There is also Geological Evidence where rocks of the same age and type and displaying the same formations, such as in south-east Brazil and South Africa. The trends of the mountains are also similar in eastern USA and North-west Europe. Similar glacial deposits are found in Antarctica, South America and India, which are now many kilometres apart. Climatological Evidence shows that places as far apart as Antarctica, North America and the UK all contain coal deposits of a similar age that were formed in tropical conditions. They are no longer in tropical climate zones and must have drifted apart since the Carboniferous period. Biological Evidence shows that similar fossil formations are found on either side of the Atlantic. Plant remains from humid swamps that later formed coal deposits have been found in India and Antarctica.…
2.The theory of “Pangaea” exists suggesting that the continents were once nestled together into one mega-continent. The continents then spread out as drifting islands.…
Wegener and his associates found that the fit of the continents, fossil evidence, paleoclimatic evidence, and similarities in rock type and structural features all seemed to bridge together the now-separated continental landmasses.…
| * “Father of Plate Tectonics,” German meteorologist * Introduced his hypothesis in “Origins of Continents and Oceans” in 1915 * Suggested that a super continent called Pangaea (all lands) existed during most of the Paleozoic * 200 Ma (Mz) Pangaea began breaking up into smaller pieces (continents) and moved to their present location…
The plate tectonics theory was put forward by Alfred Wegener suggesting that the continents were at one point all conjoined in one supercontinent known as Pangaea. He then said that Pangaea had drifted apart through the movement of plates to give us the current places of continents we have today. Wegener's theory was linked to a variety of evidence, however it took further research and evidence for this to become a leading theory. This means that although volcanic and seismic events help to prove the plate tectonics theory valid, there is also a range of other factors involved.…
A une passante is one of Charles Baudelaire’s most celebrated poems. This sonnet was first published by the artist in 1855, in the French magazine L’Artiste, and later added to the last edition of Les Fleurs du Mal. It belongs to the section Tableaux Parisiens of the collection, since its content can be easily linked to the theme of contemporary life and to the poet’s experience of modernity. Indeed, this composition delineates the chance meeting between a man (the sonnet’s narrator) and a magnetising unknown woman, in the crowded streets of Paris. My reading of A une passante will focus on the ways in which this sonnet’s form actively emphasises its major contextual subjects, with particular attention to the most modern ones. Firstly, I will…
passion to profit exercise (life change, self-employment, business start-up and development, outplacement and redundancy support, career change, self-determination and independence)…