Then return here to continue. By studying the geologic record, the fossil record, and climatic record, he found remarkable similarities between Africa and South America. Wegener's accumulated evidence could be most logically explained by continental drift. Continental drift - Wikipedia Look at a map of the Earth like that in Figure \(\PageIndex{3}\). The sediments from India are matched with six different landmasses . Which of the following was an evidence in support of the - Testbook Continental Drift Theory. 32. Richard C. Berg, Director The rocks of the same age state that the age of rocks was calculated by radiometric dating. . Fairly common in the glacial drift of Illinois, these tillites were derived from Canadian Shield rocks (Precambrian Gowganda Formation) of Ontario. Mudstone with dropstones was formed in the sea areas, particularly in the eastern half of Tasmania . tillite, sedimentary rock that consists of consolidated masses of unweathered blocks (large, angular, detached rock bodies) and glacial till (unsorted and unstratified rock material deposited by glacial ice) in a rock flour (matrix or paste of unweathered rock). My wonderfully named e-buddy Martin Bentley recently took a field trip to a quarry in South Africa (between Grahamstown and Fort Beaufort) where the Dwyka Formation is exposed: This poorly sorted sedimentary rock (a 'diamictite') is usually interpreted as glacial deposits (lithified till, or 'tillite'). Legal. Thick tilliation at base shows prolonged glaciation. Evidence in Support of the Continental Drift - QS Study The lithosphere, which is the rigid outermost shell of our planet . It looks like you could "fit" South America up against Africa like a puzzle. Today, most people know that landmasses on Earth move around, but people haven't always believed this. Terms of use (Quaternary to Eocene Continental Sediments and Sedimentary Rocks). Plate Tectonics vs. Continental Drift and See Floor Spreading The top most and youngest layer is lava flows. Wegener's theory of continental drift states that the existing continents of the earth were once glued together forming a super landmass. Continental drift theory UPSC ~ Geography Notes for UPSC , State PCS Apparently, continental drift was first postulated by Abraham Ortelius, who made one of the first atlases, in the third edition of his Thesaurus Geographicus (Ortelius, 1596) to account for the similarity between the coastlines of western Africa, western Europe, and the eastern Americas. As nouns the difference between till and tillite is that till is a cash register or till can be glacial drift consisting of a mixture of clay, sand, pebbles and boulders or till can be a vetch; a tare while tillite is (geology) glacial till cemented into a solid rock. Wegener noted that the rock sequences in South America, Africa, India, and Australia are very similar. You can get the definition (s) of a word in the list below by tapping the question-mark icon next to it. Larasia and Gondwanaland then gradually split into several smaller continents (the present continental form). There are Tillite deposits on the base of the Gondwana system in India. It was first suggested by a German meteorologist, Alfred Wegener in 1912. . As the animation plays through you can watch how the post-Pangaea Earth has formed as that super-continent drifted apart. (Quaternary) at surface, covers . Answer - Continental drift theory was proposed by Alfred Wegener in 1912. As per this theory all the continents formed a single continental mass named by Pangea. . info@isgs.illinois.edu, 2022 University of Illinois Board of Trustees. 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