Pingo growth ages in the delta area, Adventdalen, Spitsbergen

ABSTRACT The open-system pingos of Spitsbergen are formed outside terminal moraines, fault zones, and delta areas. Pingos in this study area were located near the shore in active geologic uplift areas. Three open-system pingos in the Adventdalen delta area of Spitsbergen were examined. Pingos closer...

Full description

Bibliographic Details
Published in:Polar Record
Main Authors: Yoshikawa, Kenji, Nakamura, Toshio
Format: Article in Journal/Newspaper
Language:English
Published: Cambridge University Press (CUP) 1996
Subjects:
General Earth and Planetary Sciences
Ecology
Geography, Planning and Development
Adventdalen
Shore Pingo
permafrost
Polar Record
Spitsbergen
Online Access:http://dx.doi.org/10.1017/s0032247400067565
https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0032247400067565
Description
Summary:ABSTRACT The open-system pingos of Spitsbergen are formed outside terminal moraines, fault zones, and delta areas. Pingos in this study area were located near the shore in active geologic uplift areas. Three open-system pingos in the Adventdalen delta area of Spitsbergen were examined. Pingos closer to shore are younger in age and those farther away are older. Growth of these pingos occurs rapidly after initial submarine uplift and a minimum thickness of permafrost is established. Hut pingo, which is farthest from the sea, was formed after 6980±70 a BP (NUTA-3856). Driftwood associated with Longyear pingo, in the middle part of the delta, was dated at 2800±90 a BP. The radiocarbon age of peat near the shore pingo, Lagoon pingo, was 140±20 a BP. The growth of the pingos is related to transgression and development of permafrost.

Similar Items