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from | Encarta |  |
Breccia |
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| Breccia is a type of rock made of coarse-grain stone cemented together with a finer-grain medium such as sand, clay, or volcanic lava or ash. Breccia can be formed of materials originating from volcanoes or glacier deposits, or from rocks blasted out by impacts from space objects. Breccia is found on the Moon and on Earth. | ||||||
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| Ken M. Johns/Photo Researchers, Inc. | ||||||
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| Breccia | ||||||
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