Asked • 07/03/19

To what extent has the Earth's surface been geologically mapped?

To what extent has the Earth's surface been geologically mapped? For instance, what fraction has been surveyed at 1:10 000, 1:100 000 or 1:1 000 000 scale? Edit: By 'surface' I mean land surface, not covered by water. By 'geologically mapped' I mean 'described by a conventional geological map which shows the exposed surface lithologies and their structures'.

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Stanton D. answered • 06/05/20

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