which observation was no instrumental in formulating the hypothesis of seafloor spreading?
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Answer:
Answer Expert Verified. I think identifying the location of glacial deposits is not an instrument in formulating the hypothesis of seafloor spreading because glaciers is out of the question.
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Answer:
Location of Glacial Deposit is not instrumental in formulating the hypothesis of seafloor spreading.
Explanation:
- Seafloor spreading is a geological process that separates tectonic plates (large plates in the Earth's lithosphere). Seafloor spreading and other tectonic activity processes are the result of mantle convection. Mantle convection is a phenomenon in which the Earth's mantle moves slowly and violently.
- Convection transports heat from the lower mantle and core to the lithosphere. Convection also "recycles" material from the lithosphere back to the mantle. Seafloor spreading occurs at diverging plate boundaries. As the tectonic plates slowly pull apart, the convective heat of the mantle makes the crust more plastic and less dense. Less dense material rises, often forming mountains and raised areas on the ocean floor. Eventually the crust will crack. Hot magma, supported by mantle convection, bubbles up and fills these fissures and flows into the crust.
- This bubbling magma is cooled by sea water and becomes igneous rock. This rock (basalt) becomes a new component of the earth's crust. Mid-Ocean Ridges Submarine extensions occur along mid-ocean ridges (large mountain ranges rising from the seafloor).
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