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Pseudo-Ice-Wedge Casts of Connecticut, Northeastern United States

Published online by Cambridge University Press:  20 January 2017

Robert F. Black
Robert F. Black*
Affiliation:
Department of Geology and Geophysics, University of Connecticut, Storrs, Connecticut 06268 USA
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Abstract

Since 1965, ice-wedge casts have been reported in deposits of sand and gravel in Connecticut. These are wedge forms up to 1.1 m wide and many meters high. Most are single forms, not in polygonal array. They are found in adjoining states as well. Their distribution, dimensions, structure, and fabric and an assessment of the former physical environment preclude their origin as permafrost features. They appear to be tension fractures produced by the loading of coarse clastics on fine clastics near and below the water table where sediments creep toward a stream or depression. Locally movement started with kettle formation during deglaciation. However, some wedges cut horizontal layers of iron-coated sand and gravel and must be younger than those distinctly postglacial phenomena. Moreover, modern B horizons of the overlying soil have moved down into some wedges more than 2 m, indicating that fracturing is still active today. Complex fracture fillings in bedrock also have been attributed to a permafrost origin, but this too seems unlikely.

Type
Original Articles
Information
Quaternary Research , Volume 20 , Issue 1 , July 1983 , pp. 74 - 89
Copyright
University of Washington

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References

Andrews, J.T.. 1975. Glacial Systems. Duxbury Press, North Scituate, Mass.Google Scholar
Birman, J.H.. 1952. Pleistocene clastic dikes in weathered granite-gneiss, Rhode Island. American Journal of Science 250. 721–734.Google Scholar
Black, R.F.. 1974. Ice-wedge polygons of northern Alaska. Glacial Geomorphology. Coates, D.K.. Publication in Geomorphology, State University of New York, Binghamton, N.Y. 247–275.Google Scholar
Black, R.F.. 1976. Periglacial features indicative of permafrost: Ice and soil wedges. Quaternary Research 6. 3–26.Google Scholar
Black, R.F.. 1977. Regional stagnation of ice in northeastern Connecticut: An alternative model of deglaciation for part of New England. Geological Society of America Bulletin 88. 1331–1336.Google Scholar
Black, R.F.. 1980. Evidence of permafrost during the latest Wisconsinan ice advance and retreat in Conecticut. American Quaternary Association Abstracts and Program 25.Google Scholar
Black, R.F.. 1982a. Origin of pseudo-ice-wedge casts of Connecticut. Geological Society of America Abstracts with Programs 14. 6.Google Scholar
Black, R.F.. 1982b. Modes of deglaciation of Connecticut: A review. Late Wisconsinan Glaciation of New England. Larson, G.J., Stone, B.D.. Kendall-Hunt, Dubuque, Iowa. 77–100.Google Scholar
Black, R.F.. 1983. Clastic dikes of basal till, southern Connecticut, attributed to thick stagnant ice. Geological Society of America Abstracts with Programs 15. 125.Google Scholar
Brown, R.J.E., Péwé, T.L.. 1973. Distribution of permafrost in North America and its relationship to the environment: A review, 1963–1973 Permafrost: The North American Contribution to the Second International Conference Nat. Acad. Sci 71–100.Google Scholar
Clebnik, S.M.. 1980. The Surficial Geology of the Willimantic Quadrangle. State Geological and Natural History Survey of ConnecticutQuadrangle Report No. 39.Google Scholar
Fastook, J.L., Hughes, T.. 1982. A numerical model for reconstruction and disintegration of the late Wisconsinan glaciation in the Gulf of Maine. Late Wisconsinan Glaciation of New England. Larson, G.J., Stone, B.D.. Kendall-Hunt, Dubuque, Iowa. 229–242.Google Scholar
Harris, S.A.. 1981. Climatic relationships of permafrost zones in areas of low winter snow-cover. Arctic 34. 64–70.CrossRefGoogle Scholar
Larsen, F.D.. 1979. Retreat of Ice Left Eastern Upland of Massachusetts Subject to Deep Freeze 58U.S. Geological Survey Professional Paper 1150.Google Scholar
Minard, J.P., Rhodehamel, E.C.. 1969. Quaternary geology of part of northern New Jersey and the Trenton area. Geology of Selected Areas in New Jersey and Eastern Pennsylvania. Subitzky, S.. Rutgers Univ. Press, New Brunswick, N.J. 279–313.Google Scholar
NOAA, . 1980a. Climatological Data, Annual Summary, Alaska 66. 3.Google Scholar
NOAA, . 1980b. Climatological Data, Annual Summary, New England 92. 2.Google Scholar
Paterson, W.S.B.. 1981. The Physics of Glaciers. Pergamon, Exeter, Great Britain.Google Scholar
Pessl, F.. 1966. A Two-Till Locality in Northeastern Connecticut D89–D93. U.S. Geological Survey Professional Paper 550-D.Google Scholar
Sanger, F.J.. 1965. Degree-days and heat conduction in soils Proceedings, Permafrost International Conference. Nat. Acad. Sci.-Nat. Res. Council. Publication No. 1287 253–262. Washington, D.C..Google Scholar
Schafer, J.P.. 1968a. Retreat of the last ice sheet in New England. Geological Society of America Abstracts for 1967 155. 291Special Paper.Google Scholar
Schafer, J.P.. 1968b. Periglacial features and pre-Wisconsin weathered rock in the Oxford-Waterbury-Thomaston area, western Connecticut. New England Intercollegiate Geological Conference, Guidebook No. 2 for Fieltrips in Connecticut. Orville, P.M.. State Geol. and Nat. Hist. Survey, Hartford, Conn. B–2. 1–5.Google Scholar
Schafer, J.P.. 1979. The late Wisconsinan Laurentide ice sheet in New England. Geological Society of America Abstracts with Programs 11. 52.Google Scholar
Schafer, J.P.. 1981. Glacial geology in southern Rhode Island. Guidebook to Geologic Field Studies in Rhode Island and Adjacent Areas. Boothroyd, J.C., Hermer, O.D. New England Intercollegiate Geologic Conference, University of Rhode Island, Kingston 229–235.Google Scholar
Schafer, J.P., Hartshorn, J.H.. 1965. The Quaternary of New England. The Quaternary of the United States. Wright, H.E., Frey, D.G.. Princeton Univ. Press, Princeton, N.J. 113–128.Google Scholar
Thomas, M.P., Bednar, G.A., Thomas, C.E., Wilson, W.E.. 1967. Water Resources Inventory of Connecticut. 2. Shetucker River Basin. Connecticut Water Resources Bulletin No. 11.Google Scholar
Walters, J.C.. 1978. Polygonal patterned ground in central New Jersey. Quaternary Research 10. 42–54.Google Scholar
Washburn, A.L.. 1980. Geocryology Wiley, New York.Google Scholar
Weidick, A.. 1968. Observations on some Holocene glacier fluctuations in west Greenland. Meddelelser om Groenland 165 No. 6.Google Scholar