U.S. Geological Survey Bulletin

U.S. Geological Survey Bulletin

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mity between caldera fill (intracaldera tuff, wall breccia, or moat deposits) and any older rock. ... exposed in the walls of the depression presumably slumped off and become mixed with intracaldera ash to form megabreccia and mesobreccia.

Title:U.S. Geological Survey Bulletin
Publisher: - 1983


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