Since 2006, the USGS has been releasing compilations of updated surficial geology compilations for Massachusetts under OFR2006-1260 (http://pubs.usgs.gov/of/2006/1260/).
The two most recent ones produced are for the Connecticut Valley Region (Area G), available at http://pubs.usgs.gov/of/2006/1260/G/ and southeastern Massachusetts (Area F) available at http://pubs.usgs.gov/of/2006/1260/F/.
The The MGS maintains an index page for these compilations at: https://mgs.geo.umass.edu/biblio/usgs-surficial-geologic-map-compilation...
Older, more detailed surficial geologic maps (GQs, etc...) for Massachusetts can be downloaded from the National Geologic Map Database (http://ngmdb.usgs.gov) and the USGS Publications Warehouse (http://pubs.usgs.gov)
