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Plate Tectonic Theory Timeline

Timeline created by scienceclass2 in Science and Technology
Event Date: Event Title: Event Description:
Ortelius rubens small square Abraham Ortelius Abraham Ortelius, was the one who came up with the continental drift theory. His evidence was that some parts of the world like: The Americas, Eurasia, and Africa fit together like a jig-saw puzzle.
Nicolas steno 243x300 small square Nicolas Steno Nicolas Steno's law of superposition was that each layer of rock is older than the layer above it.
James hutton 269x300 small square James Hutton 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. 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.
Wegener2 small square Alfred Wegner Alfred Wegener was the first to introduce the theory of continental drift to the world. His idea was rejected because of missing evidence until 1950 when enough evidence was found to support his theory.
Hess 01 small square Harry Hess Harry Hess was a geologist. He is best known for his work on sea floor spreading. He based and worked the most on the relationships between seafloor gravity anomalies, serpentized peridotite, and island arcs.
Wegener2 small square Alfred Wegener While browsing the university library one day Alfred came across a scientific paper that listed fossils of identical plants and animals found on opposite sides of the Atlantic. Fascinated by this information, Wegener began to look for, and find, more cases of similar organisms separated by great oceans. The continents fit together like a jig-saw puzzle.
6491 arthur%20holmes%20bio small square Arthur Holmes 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. At the time it received very little attention.
Hess 01 small square Harry Hess His sea floor spreading theory evidence in 1962. This led to his discovery of submerged and curiously flat-topped mountains that he named “guyots”. It also produced thousands of miles of echo-sounding surveys of the ocean floor.
Mackenzie 1 small square Dan McKenzie McKenzie's theory is that the lithosphere is divided into a few dozen plates that move across the earth’s surface relative to eachother . He wondered since he was young what happened to the the Continents and how they fit together like a puzzle.
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