| 31. | The sandstone in the Tithonian is mostly rounded quartz grains, but also 14 % of carbonate rock fragments.
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| 32. | As the team searches the desert, Verdeschi mindlessly plods into the gully and shoots off another rock fragment.
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| 33. | Xenoliths, rock fragments that become enveloped in a larger igneous rock, are widespread in the Northern Cordilleran Volcanic Province.
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| 34. | On April 19, 2012, there were reports of superheated rock fragments being hurled into the air by the volcano.
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| 35. | A lahar is a catastrophic slurry of water and rock fragments that rushes down the volcano's tall, steep slopes.
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| 36. | Root throw is the process that occurs when a tree topples, raising its rootwad and the rock fragments in it.
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| 37. | Primitive bacteria could have hitched a ride on rock fragments crossing interplanetary space and seeded life on Earth, he says.
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| 38. | At the bottom of the flow is a layer of coarse rock fragments that burst forth like a shotgun blast.
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| 39. | The volcanic eruption has built the new island to a height of 100 m composed of ash and large rock fragments.
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| 40. | Montserrat's volcano spewed ash and rock fragments Friday farther into the northern safe zone, continuing this week's 12-hour cycle of eruptions.
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