1. Though they sometimes are, rock fragments are not always sedimentary in origin. 2. The sandstone is pale red to brown, and contains scattered rock fragments . 3. Incandescent rock fragments at the upper slope were observed in nearby barangays. 4. Over 2, 000 decorated rock fragments extend to the foot of the mountain. 5. Then, the air must be able to carry the rock fragments to surface. 6. Apart from the mineral content, rock fragments may also be a significant component. 7. Archaeologists such as Fiona Marshall fitted rock fragments back together like a puzzle. 8. These rock fragments include chalky-white chert derived from the middle member. 9. Phreatic eruptions typically include steam and rock fragments ; the inclusion of lava is unusual. 10. The ash matrix typically contains varying amounts of pea-to cobble-sized rock fragments called lithic inclusions.
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