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28 Απρ 2020 · Harry Hess proposed the theory of seafloor spreading in 1962, which provided evidence that Wegener's theory of continental drift was correct. Hess theorized that new ocean crust is formed at mid-ocean ridges through volcanic eruptions and then spreads outwards, pushing older crust farther away. 2.
- Sea-Floor Spreading | PPT | Free Download - SlideShare
1. The document discusses sea-floor spreading, which is the...
- Sea-Floor Spreading | PPT | Free Download - SlideShare
Evidence for Seafloor Spreading In 1960, Harry Hess studied Wegener’s theory. Hess proposed the radical idea that the ocean floors move like a conveyer belt , which in turn move the continents.
30 Ιουν 2012 · 1. The document discusses sea-floor spreading, which is the process where new oceanic crust forms at mid-ocean ridges as tectonic plates move away from each other. 2. Evidence that supports sea-floor spreading includes magnetic stripe patterns in the ocean floor and samples from ocean crust that show it is younger near ridges and older further ...
4 Δεκ 2012 · Evidence from molten rock samples, magnetic stripes in the ocean crust, and the ages of rocks drilled from the ocean floor supported Harry Hess' theory from 1960 of sea-floor spreading, where new crust forms at mid-ocean ridges and spreads outward over time.
1) Harry Hess proposed the theory of sea floor spreading in 1962, which suggested that new ocean crust is formed at mid-ocean ridges as tectonic plates move away from each other. 2) Evidence for sea floor spreading includes the flat abyssal plains on the ocean floor and magnetic striping patterns in ocean crust that indicate alternating ...
Key evidence includes the physical fit of continents, fossil evidence, measurements of movement, rock layer sequences, and glacial evidence. Sea floor spreading provides further evidence as new ocean floor is formed at mid-ocean ridges, pushing older rocks away.
This document discusses evidence for sea floor spreading and plate tectonics. It explains that Harry Hess proposed the sea floor spreading theory in 1962, which states that new ocean crust is created at mid-ocean ridges and destroyed at trenches. This supports Wegener's idea of continental drift.
