Figure 4. A portion of the Weeks Mills bedrock geology map. First note the pattern of symbols shown on the map. Each symbol shows the location of a measurement taken at a bedrock outcrop. Where there are more symbols, the contacts are more accurate. Note also the solid, dashed, and dotted contacts. Solid lines represent known contacts constrained by multiple outcrops, dashed lines represent approximate contacts determined by fewer measurements, and dotted lines represent inferred contacts where there are no outcrops.

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Last updated on October 6, 2005

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