@article {22, title = {National Geologic Map Database}, publisher = {United States Geological Survey, Association of American State Geologists}, abstract = {

This database houses almost all geologic maps produced by the USGS, and links to almost all maps published by state geologic surveys, including the MGS.

Searching by placename is currenty disabled, but an interactive web-map interface to the NGMDB can be found here:

http://mrdata.usgs.gov/geology/state/map.html?x=-71.8089194224132\&y=42.2562234015901\&z=8


It is also recommended you find the name of the USGS 7.5{\textquoteright} topographic quadrangle your town is in by looking at the DEP Hydrogeologic Information Matrix, and searching the database for that. It is also very useful to search the USGS Publication Warehouse as well for the quadrangle you want.

}, keywords = {$\#$BedrockMaps, $\#$SurficialMaps, bedrock geology, geologic maps, map, surficial geology}, url = {http://ngmdb.usgs.gov} } @Map {224, title = {Bedrock geologic map of the Marlborough quadrangle, Massachusetts}, year = {2004}, publisher = {Massachusetts Geological Survey}, edition = {GM-06-01}, keywords = {$\#$BedrockMaps, $\#$MGSPub, alaskite, amphibolite, Andover Granite, Ashland, Berlin, Bloody Bluff, Burlington Mylonite Zone, epidote, fault zone, gneiss, granite, granofels, Hope Valley Alaskite, Hopkinton, Hudson, Indian Head Hill, Lake Char, Malborough, Milford granite, Milham Reservoir, mylonite, Northborough, quartzite, schist, shear zone, Southborough, volcanic, Waltham Tectonic Melange, Westborough, Wolfpen Lens}, author = {Joseph P Kopera and DiNitto, R.G. and Hepburn, J.C.} } @Map {371, title = {Bedrock geologic map of the Newton 7.5{\textquoteright} quadrangle, Middlesex, Norfolk and Suffolk counties, Massachusetts}, month = {05/2017}, publisher = {Massachusetts Geological Survey}, edition = {GM-17-01}, abstract = {

The Newton quadrangle, located west of Boston, Massachusetts, is mainly underlain by clastic sedimentary and minor igneous rocks occupying the topographic Boston Basin (Crosby, 1880; Emerson, 1917; LaForge, 1932; Billings, 1976 and references therein). Fault blocks dominated by older plutonic and volcanic rocks truncate the Basin sequence on the west and south. Although fossiliferous Cambrian strata overlying plutonic basement had been reported some 30 miles away in North Attleboro, MA (Billings, 1929), the first quadrangle map including the Newton area (1:62,500 Plate I of LaForge, 1932) portrayed the plutonic units as {\textquotedblleft}Early Paleozoic{\textquotedblright} and assigned all the others to the Devonian or Carboniferous periods. By the time the Newton quadrangle appeared at 1:24,000 scale (Kaye, 1980), emerging U-Pb zircon geochronology had revealed Neoproterozoic (Ediacaran in timescale of Gradstein et al., 2012) crystallization ages both for the Mattapan Volcanic Complex and the Dedham Granite on the south side of the map area (Kaye and Zartman, 1980; written communication of Zartman and Naylor, 1980 not published until 1984). The Boston Basin sequence in this map was inferred to be Neoproterozoic in the absence of a break with overlying Cambrian strata (Kaye and Zartman, 1980), an interpretation confirmed shortly thereafter by the discovery of Ediacaran microfossils in the top portion of the sedimentary section ({\textquotedblleft}Vendian{\textquotedblright} in Lenk et al., 1982). In the map presented here, U-Pb zircon dates obtained by the author over twenty years with colleagues at MIT{\textquoteright}s Radiogenic Isotope Lab constrain all map units except mafic dikes. During this interval, U-Pb analyses have become more precise and accurate, leading also to significant refinements to the dates used by Kaye in 1980, as discussed further in the section on Stratigraphy.\ 

}, keywords = {$\#$BedrockMaps, $\#$MGSPub, argillite, Boston, Boston Basin, Cambridge, faults, Lynn, Mattapan, Middlesex Fells, Newton, Roxbury, volcanics}, author = {Thompson, Margaret D.} } @Map {220, title = {[Digital Conversion] Bedrock geologic map of the Gloucester and Rockport quadrangles, Massachusetts}, year = {2007}, publisher = {Massachusetts Geological Survey}, edition = {DC-07-01}, abstract = {

Digitized version of\ U.S. Geological Survey Miscellaneous Investigations Series Map I-2285

}, keywords = {$\#$BedrockMaps, $\#$MGSPub, Cape Anne granite, Essex, Gloucester, granite, Ipswich, Manchester, MGS Publication, pluton, quarry, Rockport}, author = {Dennen W. and Fernandez M.} } @Map {233, title = {[Draft] Preliminary bedrock geologic map of the Lawrence quadrangle, Massachusetts}, year = {2005}, publisher = {Massachusetts Geological Survey}, keywords = {$\#$BedrockMaps, $\#$MGSPub, Andover, Andover Granite, Bedford, Berwick formation, Clinton-Newbury Fault, Dracut, Elliot formation, Lawrence, Methuen, nashoba, North Andover, tadmuck brook schist, Tewksbury}, author = {Castle, R.O. and Hepburn, J.C. and Joseph P Kopera} } @Map {228, title = {[Draft] Preliminary bedrock geologic map of the Oxford quadrangle, Worcester County, Massachusetts, Providence County, Rhode Island and Windam County, Connecticut}, year = {2005}, publisher = {Massachusetts Geological Survey}, keywords = {$\#$BedrockMaps, $\#$MGSPub, Bloody Bluff, Douglas, faults, gneiss, granite, Lake Char, Marlborough Formation, Nashoba Formation, Nashua Trough, Northbridge granite gneiss, Oxford, Sutton, Webster}, author = {Patrick J Barosh} } @Map {239, title = {[Draft] Preliminary bedrock geologic map of the South Groveland quadrangle, Massachusetts}, year = {2005}, publisher = {Massachusetts Geological Survey}, keywords = {$\#$BedrockMaps, $\#$MGSPub, Andover, Andover Granite, Boxford, Boxford formation, Clinton-Newbury Fault, Fish Brook gneiss, Georgetown, Groveland, Haverhill, Methuen, Middleton, Nashoba terrane, North Andover, Sharpner{\textquoteright}s Pond diorite}, author = {Castle, R.O. and Hepburn, J.C. and Joseph P Kopera} } @Map {232, title = {[Draft] Preliminary bedrock geologic map of the Wilmington quadrangle, Massachusetts}, year = {2005}, publisher = {Massachusetts Geological Survey}, keywords = {$\#$BedrockMaps, $\#$MGSPub, Andover, Andover Granite, Assabet River Fault, Bedford, Billerica, Billerica Schist, Boxford formation, Burlington, Burlington Mylonite Zone, Fish Brook gneiss, nashoba, North Reading, Reading, Spencer Brook Fault, Tewksbury, Waltham Tectonic Melange, Wilmington, Woburn}, author = {Castle, R.O. and Hepburn, J.C. and Joseph P Kopera} } @Map {241, title = {[Draft]Preliminary bedrock geologic map of the Reading quadrangle, Massachusetts}, year = {2005}, publisher = {Massachusetts Geological Survey}, keywords = {$\#$BedrockMaps, $\#$MGSPub, Andover, Bloody Bluff Fault, Boxford formation, Burlington Mylonite Zone, Danvers, Fish Brook gneiss, Lynn, Lynnfield, Middleton, Nashoba terrane, North Andover, North Reading, Peabody, Peabody Granite, Reading, Sharpner{\textquoteright}s Pond diorite, Stoneham, Wakefield, Waltham Tectonic Melange, Woburn}, author = {Castle, R.O. and Hepburn, J.C. and Joseph P Kopera} } @Map {221, title = {Preliminary Bedrock Geologic Map of the area surrounding Shepley{\textquoteright}s Hill, Towns of Ayer and Devens, Massachusetts}, year = {2008}, publisher = {Massachusetts Geological Survey}, edition = {OFR08-05}, keywords = {$\#$BedrockMaps, $\#$MGSPub, army, arsenic, Ayer, ayer granite, chelmsford granite, Clinton Newbury Fault Zone, Devens, landfill}, author = {Joseph P Kopera} } @Map {238, title = {Preliminary bedrock geologic map of the Ayer quadrangle, Massachusetts}, year = {2006}, publisher = {Massachusetts Geological Survey}, edition = {OFR-06-02}, abstract = {

This preliminary version of the Bedrock Map of the Ayer Quadrangle (Kopera, 2006) has been removed pending the release of an updated version in the near future. The above version should be considered outdated. If you would like a copy of this map, please contact Joseph Kopera at jkopera[at]geo[dot]geo[dot] umass[dot]edu

}, keywords = {$\#$BedrockMaps, $\#$MGSPub, arsenic, Ayer, ayer granite, Berwick formation, Boxborough, chelmsford granite, Clinton-Newbury Fault, Devens, Fort Devens, Groton, Harvard, Jahns, LITTLETON, Merrimack Terrane, mylonite, nashoba, Nashua Trough, Oakdale formation, Shepley{\textquoteright}s Hill Landfill, Shirley, tadmuck brook schist, Worcester Formation}, url = {http://www.geo.umass.edu/stategeologist/}, author = {Joseph P Kopera} } @Map {318, title = {Preliminary Bedrock Geologic Map of the Hudson 7.5{\textquoteright} Quadrangle Worcester and Middlesex Counties, Massachusetts}, year = {2014}, month = {09/2014}, publisher = {Massachusetts Geological Survey}, edition = {14-01}, abstract = {The Hudson quadrangle straddles the Clinton-Newbury Fault Zone (CNFZ), which separates low metamorphic grade Silurian turbiditic metasediments and Devonian plutons of the Nashua sub-belt (Robinson and Goldsmith, 1991) of the Merrimack Terrane to the northwest from the high-grade, migmatitic Cambro- Ordovician arc-complex of the Nashoba Terrane (Walsh et al., 2011; Loan 2011). This general area comprises the suture between the Gander and Avalon composite terranes of the Northern Appalachians (cf. Hibbard et al., 2006). Metasedimentary rocks of the Merrimack Terrane are generally poorly exposed, with intrusives (Day, Dayp, SDgdt) and the Clinton-Newbury Fault zone and associated rocks (Ot) forming a prominent northeast trending ridge (Oak Hill in the town of Harvard) marking the eastern bordering slope of the Worcester Plateau (Emerson, 1917, p. 16). Elevation and local topographic relief gradually decreases and glacial cover increases to the east-southeast across the strike of the Nashoba Formation, which, locally, forms low-relief NE-trending strike-parallel ridges. These are cut by dramatic cross-strike cliffs and glacial spillway gorges developed along cross-strike joints and brittle faults, most notably on the western slopes of Rattlesnake Hill, southern slope of Powder House Hill and in Camp Resolute in Bolton in the west-central portion of the quadrangle, and the southern slope of the hill along the west side of Codman Hill Road in Harvard in the north-central portion of the quadrangle. The migmatitic ortho- and paragneisses, schists and associated metavolcanic rocks of the Nashoba Formation (_Sn) form a northeast striking belt underlying the southern two-thirds of the quadrangle. These are intruded by a variety of presumed Ordovician to Silurian intermediate intrusives (OSd, OSaqd) and Devonian or younger tonalites to granites (Dan, Danp, Dac).}, keywords = {$\#$BedrockMaps, $\#$MGSPub, acton granite, ayer granite, Berlin, Bolton, Boxborough, Clinton-Newbury Fault, gneiss, Harvard, Harvard Conglomerate, Hudson, magnetite, Malborough, marble, migmatite, nashoba, Stow, tadmuck brook schist, Vaughn Hills}, author = {Joseph P Kopera and W.R. Hansen} } @Map {226, title = {Preliminary bedrock geologic map of the Hudson quadrangle, Massachusetts}, year = {2005}, publisher = {Massachusetts Geological Survey}, abstract = {This map has been superseded by MGS OFR 14-01: Preliminary Bedrock Geologic Map of the Hudson 7.5{\textquoteright} Quadrangle Worcester and Middlesex Counties, Massachusetts This map is an interim update to W.R. Hansen{\textquoteright}s 1956 Bedrock Geology of the Hudson and Maynard 7.5{\textquoteright} quadrangles (USGS Bulletin 1038). This draft version of the Bedrock Map of the Hudson Quadrangle (Kopera, 2005) has been removed pending the future release of an updated version. The above version should be considered outdated. If you would like a copy of this map, please contact Joseph Kopera at jkopera[at]geo[dot]geo[dot]umass[dot]edu

}, keywords = {$\#$BedrockMaps, $\#$MGSPub, acton granite, ayer granite, Berlin, Bolton, Boxborough, Clinton-Newbury Fault, gneiss, Harvard, Harvard Conglomerate, Hudson, magnetite, Malborough, marble, migmatite, nashoba, Stow, tadmuck brook schist, Vaughn Hills}, author = {Joseph P Kopera and Hansen, W.R.} } @Map {219, title = {Preliminary bedrock geologic Map of the Milford quadrangle}, year = {2007}, publisher = {Massachusetts Geological Survey}, edition = {OFR-07-01}, abstract = {

Fracture Characterization Map is included as sheets 2 and 3. Water Resources data included as sheet 4.

GIS and metadata forthcoming

}, keywords = {$\#$BedrockMaps, $\#$FractureMaps, $\#$MGSPub, acadian, alaskite, alleghenian, amphibolite, antiform, Ashland, avalon, bedrock map, blackstone, fracture, GEOLOGIC MAP, gneiss, granite, Holliston, hopedale quartzite, Hopkinton, ironstone diorite, joints, l-tectonite, Mendon, MGS Publication, Milford, neoproterozoic, Northbridge, proterozoic, quarries, quartzite, Upton, Westborough}, author = {Joseph P Kopera and Shaw, C.E. and Fernandez, M.} } @Map {214, title = {Preliminary bedrock geologic map of the Orange 7.5{\textquoteright} quadrangle, Massachusetts (including portions of the Millers Falls and Athol 7.5{\textquoteright} quadrangles)}, year = {2008}, publisher = {Massachusetts Geological Survey}, edition = {OFR08-04}, address = {Amherst, MA}, abstract = {The culmination of over 50 years of mapping and geologic investigation by U-Mass professor Peter Robinson and his students, this map details the structure and stratigraphy of the Oliverean gneiss domes and the continuation of the Bronson Hill sequence south into central Massachusetts.}, keywords = {$\#$BedrockMaps, $\#$MGSPub, AMMONOOSUC, Athol, ATHOL FAULT, BEARS DEN FAULT, BEDROCK, BRONSON HILL, ERVING, GEOLOGIC MAP, GEOLOGY, LITTLETON, map, METAMORPHIC, MGS Publication, New Salem, Orange, PELHAM DOME, Petersham, Shutesbury, Warwick, Wendell}, author = {Robinson, P. and Fernandez, M.} } @Map {222, title = {Preliminary bedrock geologic Map of the Palmer quadrangle, Massachusetts}, year = {2008}, publisher = {Massachusetts Geological Survey}, edition = {OFR-08-02}, keywords = {$\#$BedrockMaps, $\#$MGSPub, AMMONOOSUC, Belchertown, Belchertown pluton, Brimfield, Clough, Monson, Palmer, Ware, Warren}, author = {Matthew A Massey} } @Map {244, title = {Preliminary bedrock geologic Map of the Webster quadrangle, Massachusetts}, year = {2009}, publisher = {Massachusetts Geological Survey}, edition = {OFR-09-02}, keywords = {$\#$BedrockMaps, $\#$MGSPub, ayer granite, Charlton, Dudley, Eastford granite, Nashua Trough, Oakdale Quartzite, Oxford, Paxton Formation, Paxton Group, Plainville, Plainville Formation, Southbridge, Webster, Worcester Formation}, author = {Patrick J Barosh} } @Map {245, title = {Preliminary bedrock geologic map of the Westford quadrangle, Massachusetts}, year = {2009}, publisher = {Massachusetts Geological Survey}, edition = {OFR-09-01}, abstract = {Bedrock Geologic Map contains brittle fracture data Mapping still in progress. For interim fracture database, please contact Joe Kopera }, keywords = {$\#$BedrockMaps, $\#$MGSPub, Acton, amphibolite, ayer granite, Berwick formation, Boxborough, calc-silicates, Carlisle, Chelmsford, chelmsford granite, Clinton-Newbury Fault, Concord, diorite, gneiss, Groton, LITTLETON, magnetite, marble, migmatite, Nashoba Formation, phyllonite, tadmuck brook schist, Tyngsborough, Westford}, author = {Joseph P Kopera and D.C. Alvord and Richard H Jahns and M.E. Willard and W.S. White} } @Map {217, title = {Preliminary bedrock Geology of the Northern Portion of the Blackstone quadrangle, Massachusetts}, year = {2008}, publisher = {Massachusetts Geological Survey}, edition = {OFR-08-03}, abstract = {

This map is an interim progress report of mapping currently underway.

}, keywords = {$\#$BedrockMaps, $\#$MGSPub, acadian, alleghenian, avalon, bedrock map, Bellingham, blackstone, GEOLOGIC MAP, gneiss, granite, hopedale quartzite, ironstone diorite, Mendon, MGS Publication, Milford, Millville, neoproterozoic, Northbridge, proterozoic, quarries, Upton, Uxbridge}, url = {http://www.geo.umass.edu/stategeologist/}, author = {Joseph P Kopera and Shaw, C.J.} } @Map {251, title = {Progress map of the preliminary bedrock geologic map of the Billerica quadrangle, Massachusetts}, year = {2011}, publisher = {Massachusetts Geological Survey}, edition = {OFR11-03}, abstract = {This map also contains brittle fracture data as part of the GIS files. This map is a progress report of bedrock geologic mapping currently underway in the Billerica quadrangle. It is a compilation of ongoing field mapping (Massey, this study) and previously published work in the area (Alvord, 1973, 1975; Jahns et al.1959). The Billerica quadrangle is located approximately 20 miles northwest of Boston along Route 3, just south of Lowell, in northeastern Massachusetts, encompassing the northwestern most Nashoba terrane and it{\textquoteright}s boundary with the Merrimack belt (Figure 1). In the Billerica quadrangle, the Merrimack Belt consists of limited exposures of highly strained metasediments, or possibly orthoschist derived from reconstituted igne- ous protolith. The Clinton-Newbury fault zone separates the Merrimack Belt from multiply deformed, polymetamorphic biotite gneisses, migmatites, and amphibolites of the Nashoba terrane.}, keywords = {$\#$BedrockMaps, $\#$FractureMaps, $\#$MGSPub, Bedford, Berwick formation, Billerica, Billerica Schist, Boxford formation, Carlisle, Chelmsford, Clinton-Newbury Fault Zone, Concord, fracture, gneiss, joints, Lowell, magnetite, migmatite, nashoba, schist, Spencer Brook Fault, tadmuck brook schist, Tewksbury}, author = {Matthew A Massey} } @Map {247, title = {Progress report of bedrock geologic mapping of the Lowell quadrangle, Massachusetts}, year = {2010}, publisher = {Massachusetts Geological Survey}, edition = {PM-09-01}, abstract = {

Maps in Progress are not distributed to the public. If you would like to see a copy of this map, please contact Joseph Kopera at jkopera[at]geo[dot]geo[dot]umass[dot]edu

}, keywords = {$\#$BedrockMaps, $\#$MGSPub, Berwick formation, Chelmsford, Clinton-Newbury Fault, Dracut, Dracut diorite, Dracut gabbro, Dracut pluton, gabbro, Jahns, Lowell, Methuen, nashoba, Nashoba Formation, Tewksbury, Tyngsborough}, author = {Richard H Jahns and Joseph P Kopera} } @online {129, title = {The Massachusetts DEP Hydrogeologic Information Matrix}, publisher = {MassDEP}, abstract = {An index of all USGS geologic maps and hydrogeologic publications for Massachusetts, cross-referenced and indexed by town and 7.5{\textquoteright} quadrangle. This is an extremely valuable resource for finding geologic data for a given site. }, keywords = {$\#$BedrockMaps, $\#$Hydro, $\#$MapDatabase, $\#$MapsDataPublications, $\#$QuadIndex, $\#$SurficialMaps, aquifer, catalog, data, database, GEOLOGIC MAP, ground source heat pumps, groundwater, hydrogeology, index, maps, quadrangles, water resources}, url = {http://www.mass.gov/eea/docs/dep/water/compliance/hydromat.pdf} } @online {313, title = { U-Mass Geoscience Contribution Series}, year = {1978}, publisher = {Dept. of Geosciences, University of Massachusetts, Amherst}, abstract = {For several decades the Department of Geology and Geography at UMass Amherst published student theses, fieldtrip guidebooks, etc..., as affordable bound paper volumes. These publications represent some of the only geologic maps and data available for many parts of the Commonwealth. This links to a list of these publications, now available via PDF, maintained by the Dept. of Geosciences at U-Mass Amherst. For paper copies, please contact the department office. }, keywords = {$\#$BedrockMap, $\#$BedrockMaps, $\#$ConnecticutValley, $\#$Fieldtrips, $\#$UMGeoPubs}, url = {http://www.geo.umass.edu/research/list.html} } @online {138, title = {The U-Mass Geosciences publication series}, publisher = {U-Mass Amherst Dept. of Geosciences}, abstract = {A series of publications on Massachusetts geology based on Master{\textquoteright}s and PhD theses by U-Mass students from the 1960s-1990s. These are a valuable resource and the only geologic data for many areas. ***Note: This list needs to be re-built in the biblio database and have its own page off of MGS website{\textendash} it{\textquoteright}s no longer online.}, keywords = {$\#$BedrockMaps, $\#$LegacyPublications, $\#$MapsDataPublications, BEDROCK, GEOLOGY, maps, massachusetts, theses, U- Mass}, url = {http://www.geo.umass.edu/dept_info/contrib_series/list.html} }