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Bill Wilcox recommended Hall's 1980 paper about a stratigraphic test well on Martha's Vineyard as a good resource for understanding age assignments of sediment on the Vineyard. We are posting it here for review and discussion.

We understand that some of the Vineyard's clay layers, including those visible on Lucy Vincent Beach, date back to 65-80 million years...

This forum will be a place for discussions of human and natural history topics as GeoBook Studio works to complete our Big History of...