Friday, December 12, 2008

An inland glacial eratic. All the big rocks on the Vine-
yard are eratics, having been dragged by the glacier
from points north. This one is in a natural rock garden
in the Indian Hill section of West Tisbury. It may
have been plucked from a ledge in New Hampshire
or Vermont 15 thousand years ago. A good geologist
could probably tell where it came from by what
kind of rock it is.
Picture from 1985.

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