Continental Drift Continental drift over 2 million years from the continent of pangaea to today's continents. continental drift is a phenomenon which explains how the earth’s continents move on the surface of the ocean bed. abraham ortelius was the first geographer who proposed this phenomenon in 1596. the theory was independently developed in 1912 by alfred. Pangea was once a single unified landmass surrounded by a solitary sea called panthalassa. pangea broke apart in three major stages, as rifts appeared within the earth's crust. it is estimated that pangea was formed some 335 million years ago. nearly 300 million years ago, the geography of the earth was drastically different than it is today.
Continental Drift Read Earth Science Ck 12 Foundation Continental drift describes one of the earliest ways geologists thought continents moved over time. today, the theory of continental drift has been replaced by the science of plate tectonics. the theory of continental drift is most associated with the scientist alfred wegener. in the early 20th century, wegener published a paper explaining his. Description. a continental shelf is the edge of a continent lying beneath the ocean. this shelf extends from the coastline of a continent to a drop off point called the shelf break. the shelf break is where the underwater edge of a continent shelf begins to rapidly slope downwards towards the ocean floor depths. Continental drift, large scale horizontal movements of continents relative to one another and to the ocean basins during one or more episodes of geologic time. this concept was an important precursor to the development of the theory of plate tectonics, which incorporates it. the idea of a large scale displacement of continents has a long history. Continental drift. continental drift is the theory, originating in the early 20th century, that earth's continents move or drift relative to each other over geologic time. [1] the theory of continental drift has since been validated and incorporated into the science of plate tectonics, which studies the movement of the continents as they ride.
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