TY - MAP T1 - Bedrock geologic map of the Ayer 7.5’ quadrangle, Worcester and Middlesex Counties, Massachusetts Y1 - 0 A1 - Kopera J.P. KW - Ayer KW - ayer granite KW - Ayer Granodiorite KW - Ayer Quadrangle KW - Berwick KW - Campbell Hill Fault KW - chelmsford granite KW - Clinton Newbury Fault KW - Devens KW - Harvard Conglomerate KW - merrimack KW - Oakdale formation KW - pin hill KW - Shepley's Hill KW - Shirley Fault KW - tadmuck brook schist KW - Worcester Formation AB -
Editing and review are still underway. This map should be available in winter 2015/2016
JF - Open File Report PB - Massachusetts Geological Survey U2 -1:24000
ER -