Table of Contents
- 1 Who proposed the seafloor spreading theory?
- 2 What were 2 kinds of evidence were used to prove that the seafloor spread?
- 3 Which theory was proposed by Harry Hess and Robert Dietz?
- 4 Who is Harry Hess theory?
- 5 What are facts about seafloor spreading?
- 6 What is the proposed theory of sea floor spreading?
Who proposed the seafloor spreading theory?
Harry Hess
Harry Hess: One of the Discoverers of Seafloor Spreading.
What were 2 kinds of evidence were used to prove that the seafloor spread?
What 3 kinds of evidence were used to prove that the seafloor spread? What are pieces of lithosphere that carry pieces of crust? When the Earth’s Magnetic field reverses, evidence for sea-floor spreading is provided by ___________. A deep valley along the ocean floor is called a __________.
When was the theory of seafloor spreading proposed?
1960
The seafloor spreading hypothesis was proposed by the American geophysicist Harry H. Hess in 1960.
What is the theory of seafloor spreading?
Seafloor spreading is a geologic process in which tectonic plates—large slabs of Earth’s lithosphere—split apart from each other. As tectonic plates slowly move away from each other, heat from the mantle’s convection currents makes the crust more plastic and less dense.
Which theory was proposed by Harry Hess and Robert Dietz?
Hess and Robert S. Dietz suggested that new ocean crust was formed along mid-oceanic ridges between separating continents; and second, Drummond H. Matthews and Frederick J.
Who is Harry Hess theory?
Harry Hammond Hess (May 24, 1906 – August 25, 1969) was an American geologist and a United States Navy officer in World War II who is considered one of the “founding fathers” of the unifying theory of plate tectonics….
| Harry Hammond Hess | |
|---|---|
| Influenced | Frederick Vine |
What two additional categories of evidence supported the original seafloor spreading hypothesis?
Measurements of the thickness of marine sediments and absolute age determinations of such bottom material have provided additional evidence for seafloor spreading.
What is the evidence for seafloor spreading?
Molten materials and magnetic stripes are the evidence of seafloor spreading. When scientists studied patterns in the rocks of the ocean floor, they found more support for sea-floor spreading.
What are facts about seafloor spreading?
What Happens During the Process of Seafloor Spreading? History. Scientists originally believed that drifting was an occurrence exclusive to continents through continental drifts. Geographic Features. The process of seafloor spreading leads to the formation of numerous geographical features which can be terrestrial, sub-terrestrial, or marine features. Mid-Ocean Ridges.
What is the proposed theory of sea floor spreading?
seafloor spreading, theory of lithospheric evolution that holds that the ocean floors are spreading outward from vast underwater ridges. First proposed in the early 1960s by the American geologist Harry H. Hess, its major tenets gave great support to the theory of continental driftcontinental drift,
How does seafloor spreading support the plate tectonics theory?
Seafloor spreading helps explain continental drift in the theory of plate tectonics. When oceanic plates diverge , tensional stress causes fractures to occur in the lithosphere . The motivating force for seafloor spreading ridges is tectonic plate slab pull at subduction zones , rather than magma pressure, although there is typically