Waste Disposal Practices of the Former Soviet Union in the Arctic Environment
This paper summarizes major events in the tectonic evolution of the Arctic from a paleoceanographic perspective focused on the formation of oceanic basins in the Mesozoic and Cenozoic. Despite its present cold climate, the Arctic land masses once lay much farther to the south and were gradually carr...
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ftdtic:ADA280787 2023-05-15T14:29:10+02:00 Waste Disposal Practices of the Former Soviet Union in the Arctic Environment Johnson, G. L. Pogrebitsky, Julian Macnab, Ron JOINT OCEANOGRAPHIC INSTITUTIONS INC WASHINGTON DC 1994-06-24 text/html http://www.dtic.mil/docs/citations/ADA280787 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA280787 en eng http://www.dtic.mil/docs/citations/ADA280787 Approved for public release; distribution is unlimited. DTIC AND NTIS Geography Geology Geochemistry and Mineralogy *WASTE DISPOSAL *ARCTIC REGIONS *TECTONICS *PALEOCLIMATOLOGY USSR OCEAN BOTTOM TOPOGRAPHY OCEAN BASINS OCEAN RIDGES ALKALINE EARTH COMPOUNDS EVOLUTION(GENERAL) ARCTIC BASIN AMERASIAN BASIN PALEOCEANOGRAPHY RADIONUCLIDE MIGRATION Text 1994 ftdtic 2016-02-22T03:28:06Z This paper summarizes major events in the tectonic evolution of the Arctic from a paleoceanographic perspective focused on the formation of oceanic basins in the Mesozoic and Cenozoic. Despite its present cold climate, the Arctic land masses once lay much farther to the south and were gradually carried northward by plate tectonic motions. For example, in the Late Carboniferous northern Greenland, which was part of Pangea, was situated at only 30 deg N with the Panthalassa Sea to the north. By Late Jurassic-Early Cretaceous, a series of allochthonous blocks had collided with both the North American and Siberian plates. The Pacific Ocean was separated from the Arctic Basin by rotation of the North-Slope Chukotka block counterclockwise away from the Canadian Arctic Islands by Mid Cretaceous. It is speculated, based on the magnetic patterns, that the Alpha-Mendeleev Ridge complex may either have been a separate precursor block or may represent oceanic crust modified by a hot spot. Sea floor spreading in Late Cretaceous or Early Paleocene rifted the present Makarov Basin in a wedge-shaped manner, with the Siberian end wider than the Canadian. The Eurasia Basin has a well-ordered set of magnetic anomalies, and thus this basin can be confidently dated to have been created just after the Cretaceous=Tertiary boundary. Creation of the Eurasia Basin eventually opened the pathway for exchange of waters between the Arctic and Atlantic oceans. The cold-oxygen rich waters from the Arctic ventilate the world's oceans and provide an important mechanism for global heat transfer and for the cycling of nutrients and carbon. Text Arctic Basin Arctic Chukotka Greenland makarov basin Defense Technical Information Center: DTIC Technical Reports database Arctic Eurasia Basin ENVELOPE(80.000,80.000,87.000,87.000) Greenland Makarov Basin ENVELOPE(170.000,170.000,87.000,87.000) Pacific |
institution |
Open Polar |
collection |
Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
Geography Geology Geochemistry and Mineralogy *WASTE DISPOSAL *ARCTIC REGIONS *TECTONICS *PALEOCLIMATOLOGY USSR OCEAN BOTTOM TOPOGRAPHY OCEAN BASINS OCEAN RIDGES ALKALINE EARTH COMPOUNDS EVOLUTION(GENERAL) ARCTIC BASIN AMERASIAN BASIN PALEOCEANOGRAPHY RADIONUCLIDE MIGRATION |
spellingShingle |
Geography Geology Geochemistry and Mineralogy *WASTE DISPOSAL *ARCTIC REGIONS *TECTONICS *PALEOCLIMATOLOGY USSR OCEAN BOTTOM TOPOGRAPHY OCEAN BASINS OCEAN RIDGES ALKALINE EARTH COMPOUNDS EVOLUTION(GENERAL) ARCTIC BASIN AMERASIAN BASIN PALEOCEANOGRAPHY RADIONUCLIDE MIGRATION Johnson, G. L. Pogrebitsky, Julian Macnab, Ron Waste Disposal Practices of the Former Soviet Union in the Arctic Environment |
topic_facet |
Geography Geology Geochemistry and Mineralogy *WASTE DISPOSAL *ARCTIC REGIONS *TECTONICS *PALEOCLIMATOLOGY USSR OCEAN BOTTOM TOPOGRAPHY OCEAN BASINS OCEAN RIDGES ALKALINE EARTH COMPOUNDS EVOLUTION(GENERAL) ARCTIC BASIN AMERASIAN BASIN PALEOCEANOGRAPHY RADIONUCLIDE MIGRATION |
description |
This paper summarizes major events in the tectonic evolution of the Arctic from a paleoceanographic perspective focused on the formation of oceanic basins in the Mesozoic and Cenozoic. Despite its present cold climate, the Arctic land masses once lay much farther to the south and were gradually carried northward by plate tectonic motions. For example, in the Late Carboniferous northern Greenland, which was part of Pangea, was situated at only 30 deg N with the Panthalassa Sea to the north. By Late Jurassic-Early Cretaceous, a series of allochthonous blocks had collided with both the North American and Siberian plates. The Pacific Ocean was separated from the Arctic Basin by rotation of the North-Slope Chukotka block counterclockwise away from the Canadian Arctic Islands by Mid Cretaceous. It is speculated, based on the magnetic patterns, that the Alpha-Mendeleev Ridge complex may either have been a separate precursor block or may represent oceanic crust modified by a hot spot. Sea floor spreading in Late Cretaceous or Early Paleocene rifted the present Makarov Basin in a wedge-shaped manner, with the Siberian end wider than the Canadian. The Eurasia Basin has a well-ordered set of magnetic anomalies, and thus this basin can be confidently dated to have been created just after the Cretaceous=Tertiary boundary. Creation of the Eurasia Basin eventually opened the pathway for exchange of waters between the Arctic and Atlantic oceans. The cold-oxygen rich waters from the Arctic ventilate the world's oceans and provide an important mechanism for global heat transfer and for the cycling of nutrients and carbon. |
author2 |
JOINT OCEANOGRAPHIC INSTITUTIONS INC WASHINGTON DC |
format |
Text |
author |
Johnson, G. L. Pogrebitsky, Julian Macnab, Ron |
author_facet |
Johnson, G. L. Pogrebitsky, Julian Macnab, Ron |
author_sort |
Johnson, G. L. |
title |
Waste Disposal Practices of the Former Soviet Union in the Arctic Environment |
title_short |
Waste Disposal Practices of the Former Soviet Union in the Arctic Environment |
title_full |
Waste Disposal Practices of the Former Soviet Union in the Arctic Environment |
title_fullStr |
Waste Disposal Practices of the Former Soviet Union in the Arctic Environment |
title_full_unstemmed |
Waste Disposal Practices of the Former Soviet Union in the Arctic Environment |
title_sort |
waste disposal practices of the former soviet union in the arctic environment |
publishDate |
1994 |
url |
http://www.dtic.mil/docs/citations/ADA280787 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA280787 |
long_lat |
ENVELOPE(80.000,80.000,87.000,87.000) ENVELOPE(170.000,170.000,87.000,87.000) |
geographic |
Arctic Eurasia Basin Greenland Makarov Basin Pacific |
geographic_facet |
Arctic Eurasia Basin Greenland Makarov Basin Pacific |
genre |
Arctic Basin Arctic Chukotka Greenland makarov basin |
genre_facet |
Arctic Basin Arctic Chukotka Greenland makarov basin |
op_source |
DTIC AND NTIS |
op_relation |
http://www.dtic.mil/docs/citations/ADA280787 |
op_rights |
Approved for public release; distribution is unlimited. |
_version_ |
1766303245974634496 |