Tag Archives | Rocks

Erratics – by Christian Gronau

A Brief Survey of Cortes Island Beach Rocks DEFINITION: erratic (er-rat’-ic) n. A rock fragment carried by glacial ice, or by floating ice, deposited at some distance from the outcrop from which it was derived, and generally though not necessarily resting on bedrock of different lithology. Size ranges from a pebble to a house-size block. Bates […]

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