Surficial Geology 1:250,000 (Hosted Feature Layer)
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Massachusetts surficial geology data showing the location of sand and gravel deposits delineated atop U.S. Geological Survey 1:250,000 map sheets.
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2026-05-07
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Massachusetts surficial geology data showing the location of sand and gravel deposits delineated atop U.S. Geological Survey 1:250,000 map sheets.