![]() The bold theory has been ignored by academic circles until the 1960 s ocean expansion that appear, to development of continental drift said later to more in this paper, the theory of plate tectonics. The fact that Earth’s surface is separated into solid slabs, which Wegener in his theory referred to as tectonic plates, makes it unique among the planets and distinguishes it from our moon.Continental drift theory initially by autrey uz (Abraham Ortelius) is put forward in 1596, German scientists later Alfred wagener in 1912 are discussed, in the Chinese theory of continental drift, "continental drift hypothesis" shall mean the same concept. Other Theories related to Formation of ContinentsĪccording to the most widely accepted view, the movement of tectonic plates is what causes continents to form. If the continents migrated while the climate zones remained constant.If the climatic zones fluctuated from one region to another while the continents remained stationary in their positions,.The climate changes that occurred may have two different causes: Wegener’s primary motivation for formulating his drift hypothesis was to provide an explanation for significant climatic shifts that have happened in Earth’s previous geological history, such as the Carboniferous Glaciation. In a book titled “Die Entstehung de Kontinente und Ozeane,” published in 1922 and then translated into English in 1924, he expanded on his theory. In 1912, German scientist Alfred Wegener introduced the idea of continental drift. However, it was later found that these two variables were insufficient explanations for continent drift, which is viewed as a criticism of Wegener’s theory.The tidal currents brought on by the earth’s rotation forced the continental drift to move westward.Because the earth is not perfectly spherical and has a bulge at the equator, the continental drift was equatorward due to the combined action of gravity forces, pole-fleeing forces, and buoyancy factors.The fifth stage is the Orogenetic Stage, during which mountain-building activity occurred. The westward movement of North and South America resulted in the formation of the Rockies and Andes. The Atlantic Ocean first appeared in the fourth stage, some 100 million years ago, when North and South America moved westward. Third Stageĭuring the Mesozoic era’s third stage, the Tethys Sea steadily widened and filled the space between Laurasia and Gondwanaland. Pangaea initially split into two massive continental masses, with the northern and southern components being created by Laurasia and Gondwanaland, respectively. The supercontinent Pangaea started to separate in the second stage of the Jurassic epoch about 200 million years ago. Continental Drift Theory for UPSC: Â Various Stages First StageĪ mega-ocean called Panthalassa ringed the supercontinent Pangea during the Carboniferous period’s first stage. Later, Gondwanaland and Laurasia began to fragment into other smaller modern-day continents. The southern and northern modules were formed when Pangaea originally separated into two large continental masses known as Gondwanaland and Laurasia. This idea states that the supercontinent Pangaea started to divide about 200 million years ago. The mega-ocean was known as Panthalassa, and the supercontinent was known as Pangaea (Pangea). Panthalassa is another name for the Mega Ocean.Īlthough until Arthur Holmes subsequently proposed the theory, Wegener’s original theory could not account for mantle convection. According to Wegener’s hypothesis of continental drift, Pangaea, a Mega Ocean surrounding a supercontinent that consisted of all the continents as a single continental mass known as a Super Continent. The hypothesis addresses how the continents and oceans are distributed. It was first suggested by Abraham Ortelius in 1596, and Alfred Wegener completed its development. Limitations of Continental Drift TheoryĬontinental Drift Theory by Alfred WegenerĪlfred Wegener proposed the Continental Drift Theory in 1912.Evidences Supporting Continental Drift Theory.Other Theories related to Formation of Continents.Objective about Continental Drift Theory. ![]() Forces Responsible for Continental Drift.Continental Drift Theory for UPSC: Â Various Stages.Continental Drift Theory by Alfred Wegener.UPSC Geo Scientist Eligibility Criteria.UPSC EPFO Previous Year Question Papers.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |