Which of these volcanically derived deposits can develop into a rock through the lithification process? Group of answer choicesLavaLaharIgnimbriteBasalt
Question
Which of these volcanically derived deposits can develop into a rock through the lithification process? Group of answer choicesLavaLaharIgnimbriteBasalt
Solution
C. Ignimbrite
Ignimbrite is a deposit that forms from a pyroclastic flow during a volcanic eruption. These deposits can become lithified, or turned into rock, over time as they are buried and compacted, and as minerals precipitate from groundwater to cement the grains together. The resulting rock is also called ignimbrite.
While lava and basalt are both related to volcanic activity, they are already in a solid rock state when they are deposited. A lahar, a type of mudflow or debris flow composed of pyroclastic material and water, can also become lithified over time, but it is not a specific type of deposit like ignimbrite.
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