This layer stores the status of the Surficial Geology (1:24,000) data development project. Tiles, named "A" through "J", comprise U.S. Geological Survey 7.5-minute topographic quadrangle sheets and represent the units by which USGS develops and distributes the data.
The layer is named SURFGEO24KSTATUS_POLY.
A polygon layer was created by coding the Quadrangle Template and dissolving it by tile name ("A" through "J").
The layer's polygon attribute table has the following fields:
|SG_AREA||Tile name, "A" through "J"|
|SG_AVAIL||Availability of 1:24,000 surficial geology data for this tile.
"Y" for yes, "N" for no
MassGIS maintains this layer and will update the SG_AVAIL field as new geology data become available from the USGS. The most recent update was for the addition of Area "I" in August 2015.
|Date published:||August 19, 2005|
|Last updated:||August 19, 2005|