thumbnail

Holocene history of the estuarine area surrounding Portage, Alaska, as recorded in a 93 m core.

Canadian Journal of Earth Sciences

By:
, ,

Links

  • The Publications Warehouse does not have links to digital versions of this publication at this time

Abstract

Records four prograding cycles of estuarine deposition for the past 8230 + or - 100 years. Analyses of texture, mineralogy, paleontology, and sedimentary structures enable definition of eight lithologic units. Mineralogic studies show that past and present sedimentation at Portage has been largely mud and sand from the Susitna River on the NW side of Cook Inlet. Sedimentation rates for four intervals show rates to be higher and to vary more at depth than rates nearer the surface. Presently, deposition is accomplished 'instantly' as the result of tectonic subsidence and compaction of sediment caused by periodic earthquakes, in combination with a turbid estuarine system. -from Authors

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Holocene history of the estuarine area surrounding Portage, Alaska, as recorded in a 93 m core.
Series title:
Canadian Journal of Earth Sciences
Volume
20
Issue:
5
Year Published:
1983
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Canadian Journal of Earth Sciences
First page:
802
Last page:
820
Number of Pages:
19