Tag: sea floor
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PBS Terra: Earth’s Worst Mass Extinction is Actually a Warning
PBS Terra has a new video. This one is about the Permian Mass Extinction. There is a surprising natural wonder in the middle of the vast West Texas desert: a prehistoric ocean reef built from the remains of ancient sea life. This fossil-rich landscape tells the story of Earth’s most devastating mass extinction—and can help…
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How Marie Tharp Changed Geology Forever
Forbes has a story about Marie Tharp and her contributions to geology. During the International Geophysical Year 1857, Marie Tharp noticed a series of valleys and ridges in the middle Atlantic Ocean. These “lines” are essentially the mark of the sea floor spreading at the tectonic plate boundary, although at the time, the concept of…
