@proceedings {351, title = {The influence of ductile structure and rheological heterogeneity on brittle structures as exhibited by Avalonian granites in southeastern Massachusetts}, volume = {40}, year = {2008}, month = {03/2008}, pages = {3}, publisher = {Geological Society of America (GSA) : Boulder, CO, United States}, edition = {2}, address = {Buffalo, NY}, abstract = {The orientation and geographic distribution of joints, veins, and brittle faults show a conspicuous correlation with the heterogeneous distribution of foliation and lineation intensity in Neo-Proterozoic granites and their deformed counterparts in southeastern Massachusetts. Field mapping and stereonet analysis of brittle and ductile structural data collected during 1:24,000-scale geologic mapping of the Milford quadrangle yielded the following general observations, which suggest that the ductile deformational history of this region appears to have strongly influenced the later development of brittle structures in the same rocks: The behavior of these fractures in relation to ductile structure have implications for rheological constraints on tectonic models of the post-Alleghenian core of the New England Appalachians, hydrogeologic models of regional fractured bedrock aquifers, and the interpretation of topographic lineaments.}, keywords = {$\#$StaffPubs, acadian, alleghenian, avalon, BEDROCK, dikes, foliation, fracture, fracture system, fracture trace, fractures, granite, granites, Hopkinton, joints, l-tectonites, lineaments, lineation, Milford, Upton}, url = {https://gsa.confex.com/gsa/2008NE/finalprogram/abstract_134899.htm}, author = {Joseph P Kopera} } @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 {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 {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.} }