GeoJeopardy! Fridays #82

Time for GeoJeopardy! Fridays, because it has been a little while so I will do another one.

- The Earth -

An atoll is a circular one of these that has grown around a sunken volcanic island

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  It's believed the Earth is over 4.5 billion yrs. old, based on 4.6 billion yr. old rocks found on this neighbor

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 Dolomitization is the process by which this rock, including its fossils, turns into dolomite

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Term given to the tundra's always-frozen soil layer


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Until this 19th century French scientist, no one had proved the Earth rotated

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All the answers as well as any other previous GeoJeopardy! questions can be found over at my website by clicking the link.

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Questions, images, and videos courtesy of j-archive.com