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_____ form(s) only in find-grained sediments that are exposed to air.
Q12: Desert stream channels called _ are characterized
Q17: What is the sequence of crystallization along
Q19: In a _ fault the hanging wall
Q22: Pegmatites are extremely coarse-grained igneous rocks.
Q23: The _ describes the process in which
Q26: The recoverable reserve for coal in the
Q36: The origin of petroleum is very similar
Q37: _ are fragments of country rock that
Q45: Any new mineral that has crystallized under
Q54: _ are low ridges of flood-deposited sediment