New perspectives on the Popigai impact structure
The record of large-scale cratering on Earth is scant, and the only currently 'proven' 100-km-class impact structure known to have formed within the Cenozoic is Popigai, located in the Siberian Arctic at 71.5 deg N, 111 deg E. Popigai is clearly a multiringed impact basin formed within the...
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ftnasantrs:oai:casi.ntrs.nasa.gov:19930000950 2023-05-15T15:03:00+02:00 New perspectives on the Popigai impact structure Deino, A. L. Garvin, J. B. Unclassified, Unlimited, Publicly available JAN 1, 1992 application/pdf http://hdl.handle.net/2060/19930000950 unknown Document ID: 19930000950 Accession ID: 93N10138 http://hdl.handle.net/2060/19930000950 No Copyright CASI GEOPHYSICS Lunar and Planetary Inst., International Conference on Large Meteorite Impacts and Planetary Evolution; p 27-28 1992 ftnasantrs 2015-03-15T04:40:43Z The record of large-scale cratering on Earth is scant, and the only currently 'proven' 100-km-class impact structure known to have formed within the Cenozoic is Popigai, located in the Siberian Arctic at 71.5 deg N, 111 deg E. Popigai is clearly a multiringed impact basin formed within the crystalline shield rocks (Anabar) and platform sediments of the Siberian taiga, and estimates of the volume of preserved impact melt typically exceed 1700 cu km, which is within a factor of 2-3 of what would be predicted using scaling relationships. We present the preliminary results of an analysis of the present-day topography of the Popigai structure, together with refined absolute age estimates, in order to reconstruct the pre-erosional morphology of the basin, as well as to quantify the erosion or sediment infill rates in the Popigai region. Other/Unknown Material Arctic taiga NASA Technical Reports Server (NTRS) Arctic Anabar ENVELOPE(113.624,113.624,73.286,73.286) |
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Open Polar |
collection |
NASA Technical Reports Server (NTRS) |
op_collection_id |
ftnasantrs |
language |
unknown |
topic |
GEOPHYSICS |
spellingShingle |
GEOPHYSICS Deino, A. L. Garvin, J. B. New perspectives on the Popigai impact structure |
topic_facet |
GEOPHYSICS |
description |
The record of large-scale cratering on Earth is scant, and the only currently 'proven' 100-km-class impact structure known to have formed within the Cenozoic is Popigai, located in the Siberian Arctic at 71.5 deg N, 111 deg E. Popigai is clearly a multiringed impact basin formed within the crystalline shield rocks (Anabar) and platform sediments of the Siberian taiga, and estimates of the volume of preserved impact melt typically exceed 1700 cu km, which is within a factor of 2-3 of what would be predicted using scaling relationships. We present the preliminary results of an analysis of the present-day topography of the Popigai structure, together with refined absolute age estimates, in order to reconstruct the pre-erosional morphology of the basin, as well as to quantify the erosion or sediment infill rates in the Popigai region. |
format |
Other/Unknown Material |
author |
Deino, A. L. Garvin, J. B. |
author_facet |
Deino, A. L. Garvin, J. B. |
author_sort |
Deino, A. L. |
title |
New perspectives on the Popigai impact structure |
title_short |
New perspectives on the Popigai impact structure |
title_full |
New perspectives on the Popigai impact structure |
title_fullStr |
New perspectives on the Popigai impact structure |
title_full_unstemmed |
New perspectives on the Popigai impact structure |
title_sort |
new perspectives on the popigai impact structure |
publishDate |
1992 |
url |
http://hdl.handle.net/2060/19930000950 |
op_coverage |
Unclassified, Unlimited, Publicly available |
long_lat |
ENVELOPE(113.624,113.624,73.286,73.286) |
geographic |
Arctic Anabar |
geographic_facet |
Arctic Anabar |
genre |
Arctic taiga |
genre_facet |
Arctic taiga |
op_source |
CASI |
op_relation |
Document ID: 19930000950 Accession ID: 93N10138 http://hdl.handle.net/2060/19930000950 |
op_rights |
No Copyright |
_version_ |
1766334910445912064 |