USGS - science for a changing world

Mineral Resources On-Line Spatial Data

Mineral Resources > Online Spatial Data > Geology > by state > Vermont

Middlebury and Chazy Limestone; Undifferentiated Youngman and Carman Formations

Middlebury and Chazy Limestone, Undifferentiated Youngman and Carman Formations - Dark blue-gray, somewhat nodular and granular limestone with buff dolomite and shaly interbeds a fraction of an inch thick and 2 to 4 inches apart. The Middlebury, which is east of Champlain and Orwell thrusts, and the Youngman, which is east of Highgate Springs thrust, are, due partly to deformation, more slaty in appearance than the Chazy, which is west of the major thrusts. The Carman is a quartz sandstone with shaly partings that underlies the Youngman. The Chazy contains 3 members.
StateVermont
NameMiddlebury and Chazy Limestone; Undifferentiated Youngman and Carman Formations
Geologic ageOrdovician
Original map labelOmi
CommentsPart of Champlain and Vermont Valleys, Chazy Group
Primary rock typelimestone
Secondary rock typedolostone (dolomite)
Other rock typesshale; sandstone
Lithologic constituents
Major
Sedimentary > Carbonate > Limestone (Bed)dark blue-gray, somewhat nodular and granular limestone
Incidental
Sedimentary > Clastic > Sandstone (Bed)The Carman is a quartz sandstone with shaly partings that underlies the Youngman.
Sedimentary > Clastic > Mudstone > Shale (Bed)
Sedimentary > Carbonate > Dolostone (Bed)
Map references
Nicholson, S.W., Dicken, C.L., Horton, J.D., Foose, M.P., Mueller, J.A.L., and Hon, Rudi, 2006, Preliminary integrated geologic map databases for the United States: Connecticut, Maine, Massachusetts, New Hampshire, New Jersey, Rhode Island, and Vermont: U.S. Geological Survey Open-File Report 2006-1272.
Unit references
Doll, C.G., Cady, W.M., Thompson, J.B., Jr., and Billings, M.P., 1961, Centennial Geologic Map of Vermont: Vermont Geological Survey, Miscellaneous Map MISCMAP-01, scale 1:250,000.
Geographic coverageAddison - Franklin - Rutland

Show this information as [XML] - [JSON]

AccessibilityFOIAPrivacyPolicies and Notices

Take Pride in America logoUSA.gov logoU.S. Department of the Interior | U.S. Geological Survey
URL: http://mrdata.usgs.gov/geology/state/sgmc-unit.php?unit=VTOmi;0
Page Contact Information: Peter Schweitzer