Gregory Walsh
I am a Project Leader and a Supervisory Research Geologist with the Florence Bascom Geoscience Center. I manage bedrock geologic mapping activities for the USGS in the northeastern United States. I managed two international mapping projects in Morocco, the completion of the new bedrock geologic map of Vermont, and I conducted mapping Madagascar.
I have expertise in geologic mapping, structural geology, geochronology, tectonics, digital cartography, and GIS. I specialize in the mapping, structure, and tectonics of complexly deformed rocks, the integration of geologic data with hydrogeologic and mineral resource assessment studies, and the use of GIS as a mapping and analysis tool. I have trained students and geologists in geologic mapping, GIS, GPS, digital mapping, and U-Pb geochronology by SHRIMP. The Publications listed on the tab below is automatically generated and incomplete. Please contact me if you would like a copy of my current CV.
Professional Experience
1992-Present, Research Geologist, U.S. Geological Survey, Reston, Virginia and Montpelier, Vermont
1990-1992, Consulting Geologist, Heindel and Noyes, Inc., Burlington, Vermont
1988-1990, Contractor, Vermont Agency of Natural Resources, Waterbury, Vermont
1986-1988, Teaching Assistant, University of Vermont, Department of Geology, Burlington, Vermont
1986, NAGT Intern Geologist, U.S. Geological Survey, Menlo Park, California
Education and Certifications
M.S. in Geology / University of Vermont, Burlington, Vermont USA, 1989
B.S. in Geology / University of Massachusetts, Amherst, Massachusetts, 1986
Affiliations and Memberships*
2013-Present, Fellow, Geological Society of America
1988-2013, Member, Geological Society of America
2013-2014, Elected Vice-Chair, Geological Society of America, Northeastern Section Management Board
2014-2015, Chair, Geological Society of America, Northeastern Section Management Board
2015-2016, Past-Chair, Geological Society of America, Northeastern Section Management Board
2012-Present, Member, Connecticut Geological Society
1998-Present, Member, New Hampshire Geological Society
1992-Present, Member, Vermont Geological Society
Honors and Awards
Dean’s List five semesters (1982-1986)
Amoco Geophysics Award (1985)
NAGT – USGS Student Internship (1985)
L.R. Wilson Award, UMASS Amherst (1986)
Charles G. Doll Award, Vermont Geological Society (1988)
Twenty-one USGS performance awards (1997-2021)
Elected GSA Fellow (2013)
Science and Products
U-Pb zircon geochronology of the Paleoproterozoic Tagragra de Tata inlier and its Neoproterozoic cover, western Anti-Atlas, Morocco
Bedrock geology in the vicinity of the Knowles and Andreas well sites, West Newbury, Massachusetts
Bedrock geology in the vicinity of the Rockland Avenue well site, Maynard, Massachusetts
Bedrock geologic map of the Hubbard Brook experimental forest, Grafton County, New Hampshire
Contrasting methods of fracture trend characterization in crystalline metamorphic and igneous rocks of the Windham quadrangle, New Hampshire
Bedrock geologic map of the Hubbard Brook experimental forest, Grafton County, New Hampshire
Tectonic and regional metamorphic implications of the discovery of Middle Ordovician conodonts in cover rocks east of the Green Mountain massif, Vermont
U-Pb zircon age of metafelsite from the Pinney Hollow formation: Implications for the development of the Vermont Appalachians
Bedrock geologic map of the Windham quadrangle, Rockingham and Hillsborough counties, New Hampshire
Digital bedrock geologic map of the Mount Carmel 7.5 x 15 minute quadrangle, Vermont
Digital bedrock geologic map of the Vermont part of the Hartland quadrangle, Windsor County, Vermont
Digital and preliminary bedrock geologic map of the Mount Carmel quadrangle, Vermont
Science and Products
U-Pb zircon geochronology of the Paleoproterozoic Tagragra de Tata inlier and its Neoproterozoic cover, western Anti-Atlas, Morocco
Bedrock geology in the vicinity of the Knowles and Andreas well sites, West Newbury, Massachusetts
Bedrock geology in the vicinity of the Rockland Avenue well site, Maynard, Massachusetts
Bedrock geologic map of the Hubbard Brook experimental forest, Grafton County, New Hampshire
Contrasting methods of fracture trend characterization in crystalline metamorphic and igneous rocks of the Windham quadrangle, New Hampshire
Bedrock geologic map of the Hubbard Brook experimental forest, Grafton County, New Hampshire
Tectonic and regional metamorphic implications of the discovery of Middle Ordovician conodonts in cover rocks east of the Green Mountain massif, Vermont
U-Pb zircon age of metafelsite from the Pinney Hollow formation: Implications for the development of the Vermont Appalachians
Bedrock geologic map of the Windham quadrangle, Rockingham and Hillsborough counties, New Hampshire
Digital bedrock geologic map of the Mount Carmel 7.5 x 15 minute quadrangle, Vermont
Digital bedrock geologic map of the Vermont part of the Hartland quadrangle, Windsor County, Vermont
Digital and preliminary bedrock geologic map of the Mount Carmel quadrangle, Vermont
*Disclaimer: Listing outside positions with professional scientific organizations on this Staff Profile are for informational purposes only and do not constitute an endorsement of those professional scientific organizations or their activities by the USGS, Department of the Interior, or U.S. Government