METAMORPHIC: Gneiss, Big Thompson Canyon --- In this high-grade metamorphic rock, the lighter colored layers melted and recrystallized between the darker colored layers.
gneiss
Educational, hands-on videos, produced by the NAD Department of Education in collaboration with GRI,…
A deeper look at the appearance of various phyla in the geologic column
The Geoscience Research Institute partially funded a recently published article modeling erosion rates…
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