GEOLOGY OF THE USA CRREL PERMAFROST TUNNEL, FAIRBANKS, ALASKA
The study provides the pertinent regional and historical geology of the tunnel site and immediate surroundings as well as data on the index properties and seismic velocities of the material through which the tunnel passes. The tunnel, located in the discontinuous permafrost zone, is discussed with e...
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ftdtic:AD0660310 2023-05-15T16:36:44+02:00 GEOLOGY OF THE USA CRREL PERMAFROST TUNNEL, FAIRBANKS, ALASKA Sellmann, Paul V. COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH 1967-07 text/html http://www.dtic.mil/docs/citations/AD0660310 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0660310 en eng http://www.dtic.mil/docs/citations/AD0660310 Availability: Document partially illegible. DTIC AND NTIS Snow Ice and Permafrost *GEOLOGY *PERMAFROST *UNDERGROUND STRUCTURES PHYSICAL PROPERTIES ALASKA GRAVEL ROCK STRATIGRAPHY ICE GEOLOGIC AGE DETERMINATION SILT Text 1967 ftdtic 2016-02-21T09:46:30Z The study provides the pertinent regional and historical geology of the tunnel site and immediate surroundings as well as data on the index properties and seismic velocities of the material through which the tunnel passes. The tunnel, located in the discontinuous permafrost zone, is discussed with emphasis on bedrock, gravel, silt, ground ice, and chemical gradient. A study of the stratigraphy of the section reveals a record of the past climatic history of the area, based on the structure and distribution of the ice wedges, chemical gradients, sedimentary structures, radiocarbon dates, and the lithology of the material exposed along the tunnel section and vertical ventilation shaft. Two recognizable unconformities appear in the section. The large size of the wedges suggests that depositional rates were fairly slow during the period of wedge development. It can also be concluded that within the last 30,000 yr a minimum of 30 ft of silt was deposited, most of which is Wisconsin age. Text Ice permafrost wedge* Alaska Defense Technical Information Center: DTIC Technical Reports database Fairbanks |
institution |
Open Polar |
collection |
Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
Snow Ice and Permafrost *GEOLOGY *PERMAFROST *UNDERGROUND STRUCTURES PHYSICAL PROPERTIES ALASKA GRAVEL ROCK STRATIGRAPHY ICE GEOLOGIC AGE DETERMINATION SILT |
spellingShingle |
Snow Ice and Permafrost *GEOLOGY *PERMAFROST *UNDERGROUND STRUCTURES PHYSICAL PROPERTIES ALASKA GRAVEL ROCK STRATIGRAPHY ICE GEOLOGIC AGE DETERMINATION SILT Sellmann, Paul V. GEOLOGY OF THE USA CRREL PERMAFROST TUNNEL, FAIRBANKS, ALASKA |
topic_facet |
Snow Ice and Permafrost *GEOLOGY *PERMAFROST *UNDERGROUND STRUCTURES PHYSICAL PROPERTIES ALASKA GRAVEL ROCK STRATIGRAPHY ICE GEOLOGIC AGE DETERMINATION SILT |
description |
The study provides the pertinent regional and historical geology of the tunnel site and immediate surroundings as well as data on the index properties and seismic velocities of the material through which the tunnel passes. The tunnel, located in the discontinuous permafrost zone, is discussed with emphasis on bedrock, gravel, silt, ground ice, and chemical gradient. A study of the stratigraphy of the section reveals a record of the past climatic history of the area, based on the structure and distribution of the ice wedges, chemical gradients, sedimentary structures, radiocarbon dates, and the lithology of the material exposed along the tunnel section and vertical ventilation shaft. Two recognizable unconformities appear in the section. The large size of the wedges suggests that depositional rates were fairly slow during the period of wedge development. It can also be concluded that within the last 30,000 yr a minimum of 30 ft of silt was deposited, most of which is Wisconsin age. |
author2 |
COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH |
format |
Text |
author |
Sellmann, Paul V. |
author_facet |
Sellmann, Paul V. |
author_sort |
Sellmann, Paul V. |
title |
GEOLOGY OF THE USA CRREL PERMAFROST TUNNEL, FAIRBANKS, ALASKA |
title_short |
GEOLOGY OF THE USA CRREL PERMAFROST TUNNEL, FAIRBANKS, ALASKA |
title_full |
GEOLOGY OF THE USA CRREL PERMAFROST TUNNEL, FAIRBANKS, ALASKA |
title_fullStr |
GEOLOGY OF THE USA CRREL PERMAFROST TUNNEL, FAIRBANKS, ALASKA |
title_full_unstemmed |
GEOLOGY OF THE USA CRREL PERMAFROST TUNNEL, FAIRBANKS, ALASKA |
title_sort |
geology of the usa crrel permafrost tunnel, fairbanks, alaska |
publishDate |
1967 |
url |
http://www.dtic.mil/docs/citations/AD0660310 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0660310 |
geographic |
Fairbanks |
geographic_facet |
Fairbanks |
genre |
Ice permafrost wedge* Alaska |
genre_facet |
Ice permafrost wedge* Alaska |
op_source |
DTIC AND NTIS |
op_relation |
http://www.dtic.mil/docs/citations/AD0660310 |
op_rights |
Availability: Document partially illegible. |
_version_ |
1766027058840862720 |