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Plate tectonics history timeline
Transcript
Plate tectonics history timeline
by: valentina & sofia
harry hess
- 24 May, 1960
- Developed the idea that oceanic crust forms along mid-ocean ridges and spreads out laterally away from the ridges.
- He published ‘The History of Ocean Basins' in 1962, in which he outlined a theory that could explain how the continents could actually drift.
- This theory later became known as ‘Sea Floor Spreading'.
alfred wegner
- 1 November, 1880
- First to introduce the theory of continental drift to the world (Pangea)
- Until the 1950s and ’60s, however, his idea was rejected by most geologists because he could not describe the driving forces behind continental drift.
Abraham ortelius
arthur holmes
- 1 January, 1596
- Abraham Ortelius, was the one who came up with the continental drift theory.
- Abraham Ortelius was the first cartographer, who named the sources of his maps by mentioning the cartographers.
- Abraham Ortelius also produced a collection of place names "Thesaurus Geographicus", which is of similar importance.
- 1 January, 1929
- Arthur's Theory is that the mantle goes under thermal convection. As magma is heated it tends to rise and then it cools and sinks again.
- Although his ideas were not taken seriously at the time, Holmes’s mantle convection hypothesis later gained support.
james hutton
- This showed to him that granite formed from cooling of molten rock, not precipitation out of water as others at the time believed, and that the granite must be younger than the schists.
- 1 January, 1785
- James Hutton used Steno’s Law of Superposition.
- It compares rock layers to rocks above and below the rock.
- His evidence was that he found granite penetrating metaphoric schists, in a way which indicated that the granite had been molten at the time.
nicolas steno
- 1 January, 1683
- Nicolas Steno's law of superposition was that each layer of rock is older than the layer above it.
- Proposed the Law of Superposition: each layer of rock is older than the layer above it.
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