Author: Troy Lewis PéwéPublisher: Geological Society of America
ISBN: 0813721032
Category : Patterned Ground Alaska Donnelly Dome Region
Languages : en
Pages : 98
Book Description
Origin and Paleoclimatic Significance of Large-scale Patterned Ground in the Donnelly Dome Area, Alaska
Author: Troy Lewis PéwéPublisher: Geological Society of America
ISBN: 0813721032
Category : Patterned Ground Alaska Donnelly Dome Region
Languages : en
Pages : 98
Book Description
Origin and Paleoclimatic Significance of Large-scale Patterned Ground in the Donnelly Dome Area, Alaska
Author: Troy Lewis PéwéPublisher:
ISBN:
Category : Patterned ground
Languages : en
Pages : 0
Book Description
Origin and Environmental Significance of Large-scale Patterned Ground, Donnelly Dome Area, Alaska
Author: Richard E. ChurchPublisher:
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: Geological Survey Water-supply Paper
Author: Arctic Stream Processes
Author: Kevin M. ScottPublisher:
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
![Permafrost: North American Contribution [to The] Second International Conference PDF](https://books.google.com/books/content/images/frontcover/M4SvF9Qax7EC?fife=w80-h100)
Author: Publisher: National Academies
ISBN: 9780309021159
Category : Frozen ground
Languages : en
Pages : 808
Book Description
SIPRE Report
Author: Alaskan Papers and Abstracts Published by the Geological Society of America, 1890-1978, Indexed by Quadrangle
Author: Edward Huntington CobbPublisher:
ISBN:
Category : Geology
Languages : en
Pages : 424
Book Description
Encyclopedia of Quaternary Science
Author: Publisher: Elsevier
ISBN: 0080547826
Category : Science
Languages : en
Pages : 7184
Book Description
The quaternary sciences constitute a dynamic, multidisciplinary field of research that has been growing in scientific and societal importance in recent years. This branch of the Earth sciences links ancient prehistory to modern environments. Quaternary terrestrial sediments contain the fossil remains of existing species of flora and fauna, and their immediate predecessors. Quaternary science plays an integral part in such important issues for modern society as groundwater resources and contamination, sea level change, geologic hazards (earthquakes, volcanic eruptions, tsunamis), and soil erosion. With over 360 articles and 2,600 pages, many in full-color, the Encyclopedia of Quaternary Science provides broad ranging, up-to-date articles on all of the major topics in the field. Written by a team of leading experts and under the guidance of an international editorial board, the articles are at a level that allows undergraduate students to understand the material, while providing active researchers with the latest information in the field. Also available online via ScienceDirect (2006) – featuring extensive browsing, searching, and internal cross-referencing between articles in the work, plus dynamic linking to journal articles and abstract databases, making navigation flexible and easy. For more information, pricing options and availability visit www.info.sciencedirect.com. 360 individual articles written by prominent international authorities, encompassing all important aspects of quaternary science Each entry provides comprehensive, in-depth treatment of an overview topic and presented in a functional, clear and uniform layout Reference section provides guidence for further research on the topic Article text supported by full-color photos, drawings, tables, and other visual material Writing level is suited to both the expert and non-expert