Glacial Boulders on the Arctic Coast of Alaska
Reports incidental observations made in the Barrow-Cape Simpson area 1949-50. Pleistocene glaciers of Alaska did not extend north beyond the northern foothills of the Brooks Range, yet glacial boulders have been reported near and along the coast. Altogether 56 such erratic boulders from sheltered sp...
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The Arctic Institute of North America
1958
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Online Access: | http://dx.doi.org/10.14430/arctic3734 http://arctic.journalhosting.ucalgary.ca/arctic/index.php/arctic/article/viewFile/3734/3708 |
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crarcticinstna:10.14430/arctic3734 2024-06-09T07:42:08+00:00 Glacial Boulders on the Arctic Coast of Alaska McCarthy, Gerald R. 1958 http://dx.doi.org/10.14430/arctic3734 http://arctic.journalhosting.ucalgary.ca/arctic/index.php/arctic/article/viewFile/3734/3708 unknown The Arctic Institute of North America ARCTIC volume 11, issue 2, page 70 ISSN 1923-1245 0004-0843 journal-article 1958 crarcticinstna https://doi.org/10.14430/arctic3734 2024-05-14T12:53:43Z Reports incidental observations made in the Barrow-Cape Simpson area 1949-50. Pleistocene glaciers of Alaska did not extend north beyond the northern foothills of the Brooks Range, yet glacial boulders have been reported near and along the coast. Altogether 56 such erratic boulders from sheltered spots on the shore, as far as 8-9 mi inland on the tundra and a few from the present sea floor were examined. Their location and size, rock type with field description and petrographic analysis are tabulated. Of granite (16), diabase (17), quartzite (10), etc., they range in weight from 2-3 lbs. to 4-5 tons. They are thought to represent morainic material left by melting icebergs, and the bergs to have been produced from glaciers in widely separated areas. Article in Journal/Newspaper Arctic Arctic Barrow Brooks Range glaciers Iceberg* Tundra Alaska Arctic Institute of North America Arctic Barrow Cape ENVELOPE(-61.704,-61.704,-63.716,-63.716) Cape Simpson ENVELOPE(-87.066,-87.066,67.351,67.351) Northern Foothills ENVELOPE(163.917,163.917,-74.733,-74.733) ARCTIC 11 2 70 |
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Open Polar |
collection |
Arctic Institute of North America |
op_collection_id |
crarcticinstna |
language |
unknown |
description |
Reports incidental observations made in the Barrow-Cape Simpson area 1949-50. Pleistocene glaciers of Alaska did not extend north beyond the northern foothills of the Brooks Range, yet glacial boulders have been reported near and along the coast. Altogether 56 such erratic boulders from sheltered spots on the shore, as far as 8-9 mi inland on the tundra and a few from the present sea floor were examined. Their location and size, rock type with field description and petrographic analysis are tabulated. Of granite (16), diabase (17), quartzite (10), etc., they range in weight from 2-3 lbs. to 4-5 tons. They are thought to represent morainic material left by melting icebergs, and the bergs to have been produced from glaciers in widely separated areas. |
format |
Article in Journal/Newspaper |
author |
McCarthy, Gerald R. |
spellingShingle |
McCarthy, Gerald R. Glacial Boulders on the Arctic Coast of Alaska |
author_facet |
McCarthy, Gerald R. |
author_sort |
McCarthy, Gerald R. |
title |
Glacial Boulders on the Arctic Coast of Alaska |
title_short |
Glacial Boulders on the Arctic Coast of Alaska |
title_full |
Glacial Boulders on the Arctic Coast of Alaska |
title_fullStr |
Glacial Boulders on the Arctic Coast of Alaska |
title_full_unstemmed |
Glacial Boulders on the Arctic Coast of Alaska |
title_sort |
glacial boulders on the arctic coast of alaska |
publisher |
The Arctic Institute of North America |
publishDate |
1958 |
url |
http://dx.doi.org/10.14430/arctic3734 http://arctic.journalhosting.ucalgary.ca/arctic/index.php/arctic/article/viewFile/3734/3708 |
long_lat |
ENVELOPE(-61.704,-61.704,-63.716,-63.716) ENVELOPE(-87.066,-87.066,67.351,67.351) ENVELOPE(163.917,163.917,-74.733,-74.733) |
geographic |
Arctic Barrow Cape Cape Simpson Northern Foothills |
geographic_facet |
Arctic Barrow Cape Cape Simpson Northern Foothills |
genre |
Arctic Arctic Barrow Brooks Range glaciers Iceberg* Tundra Alaska |
genre_facet |
Arctic Arctic Barrow Brooks Range glaciers Iceberg* Tundra Alaska |
op_source |
ARCTIC volume 11, issue 2, page 70 ISSN 1923-1245 0004-0843 |
op_doi |
https://doi.org/10.14430/arctic3734 |
container_title |
ARCTIC |
container_volume |
11 |
container_issue |
2 |
container_start_page |
70 |
_version_ |
1801371044320116736 |