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He was responsible for hypothesising two major former geographical features, the supercontinent Gondwana and the Tethys Ocean.
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Was a geologist who made two major contributions to the understanding of geology.He pioneered the use of radiometric dating of minerals and was the first earth scientist to grasp the mechanical and thermal implications of mantle convection,
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He suggested a theory about it.He did lots of proves to make sure this was corrected.
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Was a seismologist. He is famous for his work on deep focus earthquakes and how they are associated with subduction zones. He was the first to propose that subduction zones cause deep focus earthquakes.
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He was the first scientist to propose the theory of two original supercontinents separated by one ocean.At least he noticed the stratigraphy was nearly identical.
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He was geologist.He studied mid-ocean ridges and suggested that a process he called sea-floor spreading continually adds new material to the ocean floor
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was initially sceptical of the theory of Plate Tectonics, but eventually became one of its most famous supporters, proposing two important ideas.
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He was a geologist and geophysicist.He made key contributions to show that the seafloor spreads from mid-ocean ridges with a symmetrical pattern of magnetic reversals in the basalt rocks on either side.
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was a geophysicist.He demonstrated that a better fit between the continents could be made if the continental shelf/slope boundary at a water depth of 1,000 meters was used instead of the current coastlines of the continents.
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He was able to demonstrate a model of motion of six plates that form the earth's crust. He demonstrated that the total crust created at the ocean ridges equaled the amount of crust lost due to subduction.
