Author: Troy Lewis Péwé
Publisher:
ISBN:
Category : Patterned ground
Languages : en
Pages : 0
Book Description
Origin and Paleoclimatic Significance of Large-scale Patterned Ground in the Donnelly Dome Area, Alaska
Author: Troy Lewis Péwé
Publisher:
ISBN:
Category : Patterned ground
Languages : en
Pages : 0
Book Description
Publisher:
ISBN:
Category : Patterned ground
Languages : en
Pages : 0
Book Description
Origin and Paleoclimatic Significance of Large-scale Patterned Ground in the Donnelly Dome Area, Alaska
Author: Troy Lewis Péwé
Publisher: Geological Society of America
ISBN: 0813721032
Category : Patterned Ground Alaska Donnelly Dome Region
Languages : en
Pages : 98
Book Description
Publisher: Geological Society of America
ISBN: 0813721032
Category : Patterned Ground Alaska Donnelly Dome Region
Languages : en
Pages : 98
Book Description
Origin and Environmental Significance of Large-scale Patterned Ground, Donnelly Dome Area, Alaska
Author: Richard E. Church
Publisher:
ISBN:
Category : Frozen ground
Languages : en
Pages : 102
Book Description
Large-scale patterned ground in the Donnelly Dome area of central Alaska consists of polygons 25 to 46 m in diameter bounded by shallow troughs 1 to 2 m wide that form the sides of the polygons. The troughs are underlain by wedge-shaped masses of sediments that extend downward 2 to 3 m. Texture of the sediments of the wedges is distinct from that of the poorly stratified glacial outwash gravel that the wedges transect. Sediments of the wedge vary texturally along the strike and vertically within a given wedge. The coarsest material in the wedge is about 75 mm in diameter, which is the same size as the coarsest material in the outwash. The fine material in the wedges is silt, the same as that which blankets the area. The patterned ground of the Donnelly Dome area originated during Wisconsin time when the mean annual air temperature was at least 3C colder than now. Wigh the warming of the climate in post-Wisconsin time most of the perennially frozen gravel thawed and the ice wedges melted. The voids created by the melting of the ice wedges were filled with sediment that was washed from the surface or collapsed from the thawed sides of the voids. The troughs bounding the polygons are now, however, no longer underlain with ice wedges but with ice wedge pseudomorphs (fossil ice wedges). (Author).
Publisher:
ISBN:
Category : Frozen ground
Languages : en
Pages : 102
Book Description
Large-scale patterned ground in the Donnelly Dome area of central Alaska consists of polygons 25 to 46 m in diameter bounded by shallow troughs 1 to 2 m wide that form the sides of the polygons. The troughs are underlain by wedge-shaped masses of sediments that extend downward 2 to 3 m. Texture of the sediments of the wedges is distinct from that of the poorly stratified glacial outwash gravel that the wedges transect. Sediments of the wedge vary texturally along the strike and vertically within a given wedge. The coarsest material in the wedge is about 75 mm in diameter, which is the same size as the coarsest material in the outwash. The fine material in the wedges is silt, the same as that which blankets the area. The patterned ground of the Donnelly Dome area originated during Wisconsin time when the mean annual air temperature was at least 3C colder than now. Wigh the warming of the climate in post-Wisconsin time most of the perennially frozen gravel thawed and the ice wedges melted. The voids created by the melting of the ice wedges were filled with sediment that was washed from the surface or collapsed from the thawed sides of the voids. The troughs bounding the polygons are now, however, no longer underlain with ice wedges but with ice wedge pseudomorphs (fossil ice wedges). (Author).
Abstracts of North American Geology
Author:
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 1080
Book Description
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 1080
Book Description
Geological Survey Water-supply Paper
Author:
Publisher:
ISBN:
Category : Floods
Languages : en
Pages : 478
Book Description
Publisher:
ISBN:
Category : Floods
Languages : en
Pages : 478
Book Description
Arctic Stream Processes
Author: Kevin M. Scott
Publisher:
ISBN:
Category : Erosion
Languages : en
Pages : 88
Book Description
Selectively summarizes investigations to 1978 dealing with the physical processes of streams in the arctic. Includes Canadian material.
Publisher:
ISBN:
Category : Erosion
Languages : en
Pages : 88
Book Description
Selectively summarizes investigations to 1978 dealing with the physical processes of streams in the arctic. Includes Canadian material.
Permafrost: North American Contribution [to The] Second International Conference
Author:
Publisher: National Academies
ISBN: 9780309021159
Category : Frozen ground
Languages : en
Pages : 808
Book Description
Publisher: National Academies
ISBN: 9780309021159
Category : Frozen ground
Languages : en
Pages : 808
Book Description
SIPRE Report
Author:
Publisher:
ISBN:
Category : Frozen ground
Languages : en
Pages : 230
Book Description
Publisher:
ISBN:
Category : Frozen ground
Languages : en
Pages : 230
Book Description
Alaskan Papers and Abstracts Published by the Geological Society of America, 1890-1978, Indexed by Quadrangle
Author: Edward Huntington Cobb
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 424
Book Description
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 424
Book Description
Glaciers, Sea Ice, and Ice Formation
Author: John P. Rafferty Associate Editor, Earth Sciences
Publisher: The Rosen Publishing Group, Inc
ISBN: 1615301194
Category : Juvenile Nonfiction
Languages : en
Pages : 255
Book Description
Explores the frozen tundra of the Arctic and Antarctic as the complexities of water are revealed.
Publisher: The Rosen Publishing Group, Inc
ISBN: 1615301194
Category : Juvenile Nonfiction
Languages : en
Pages : 255
Book Description
Explores the frozen tundra of the Arctic and Antarctic as the complexities of water are revealed.