Impactites of the Haughton impact structure, Devon Island, Canadian High Arctic
Contrary to the previous interpretation of a single allochthonous impactite lithology, combined field, optical, and analytical scanning electron microscopy (SEM) studies have revealed the presence of a series of impactites at the Haughton impact structure. In the crater interior, there is a consiste...
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ftunivarizonaojs:oai:journals.uair.arizona.edu:article/15210 2023-05-15T15:04:11+02:00 Impactites of the Haughton impact structure, Devon Island, Canadian High Arctic Osinski, Gordon R. Spray, John G. Lee, Pascal 2005-01-01 application/pdf https://journals.uair.arizona.edu/index.php/maps/article/view/15210 eng eng Meteoritics & Planetary Science Archives https://journals.uair.arizona.edu/index.php/maps/article/view/15210/15198 https://journals.uair.arizona.edu/index.php/maps/article/view/15210 Meteoritics & Planetary Science Archives; Vol 40, No 12 (2005); 1789-1812 1945-5100 1086-9379 Impact melt breccias;Carbonate melts;Haughton impact structure;Impactites;Crystalline versus sedimentary targets info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article 2005 ftunivarizonaojs 2020-11-14T17:53:00Z Contrary to the previous interpretation of a single allochthonous impactite lithology, combined field, optical, and analytical scanning electron microscopy (SEM) studies have revealed the presence of a series of impactites at the Haughton impact structure. In the crater interior, there is a consistent upward sequence from parautochthonous target rocks overlain by parautochthonous lithic (monomict) breccias, through allochthonous lithic (polymict) breccia, into pale grey allochthonous impact melt breccias. The groundmass of the pale grey impact melt breccias consists of microcrystalline calcite, silicate impact melt glass, and anhydrite. Analytical data and microtextures indicate that these phases represent a series of impact-generated melts that were molten at the time of, and following, deposition. Impact melt glass clasts are present in approximately half of the samples studied. Consideration of the groundmass phases and impact glass clasts reveal that impactites of the crater interior contain shock-melted sedimentary material from depths of >920 to 200 to Article in Journal/Newspaper Arctic Devon Island Journals at the University of Arizona Arctic Devon Island ENVELOPE(-88.000,-88.000,75.252,75.252) |
institution |
Open Polar |
collection |
Journals at the University of Arizona |
op_collection_id |
ftunivarizonaojs |
language |
English |
topic |
Impact melt breccias;Carbonate melts;Haughton impact structure;Impactites;Crystalline versus sedimentary targets |
spellingShingle |
Impact melt breccias;Carbonate melts;Haughton impact structure;Impactites;Crystalline versus sedimentary targets Osinski, Gordon R. Spray, John G. Lee, Pascal Impactites of the Haughton impact structure, Devon Island, Canadian High Arctic |
topic_facet |
Impact melt breccias;Carbonate melts;Haughton impact structure;Impactites;Crystalline versus sedimentary targets |
description |
Contrary to the previous interpretation of a single allochthonous impactite lithology, combined field, optical, and analytical scanning electron microscopy (SEM) studies have revealed the presence of a series of impactites at the Haughton impact structure. In the crater interior, there is a consistent upward sequence from parautochthonous target rocks overlain by parautochthonous lithic (monomict) breccias, through allochthonous lithic (polymict) breccia, into pale grey allochthonous impact melt breccias. The groundmass of the pale grey impact melt breccias consists of microcrystalline calcite, silicate impact melt glass, and anhydrite. Analytical data and microtextures indicate that these phases represent a series of impact-generated melts that were molten at the time of, and following, deposition. Impact melt glass clasts are present in approximately half of the samples studied. Consideration of the groundmass phases and impact glass clasts reveal that impactites of the crater interior contain shock-melted sedimentary material from depths of >920 to 200 to |
format |
Article in Journal/Newspaper |
author |
Osinski, Gordon R. Spray, John G. Lee, Pascal |
author_facet |
Osinski, Gordon R. Spray, John G. Lee, Pascal |
author_sort |
Osinski, Gordon R. |
title |
Impactites of the Haughton impact structure, Devon Island, Canadian High Arctic |
title_short |
Impactites of the Haughton impact structure, Devon Island, Canadian High Arctic |
title_full |
Impactites of the Haughton impact structure, Devon Island, Canadian High Arctic |
title_fullStr |
Impactites of the Haughton impact structure, Devon Island, Canadian High Arctic |
title_full_unstemmed |
Impactites of the Haughton impact structure, Devon Island, Canadian High Arctic |
title_sort |
impactites of the haughton impact structure, devon island, canadian high arctic |
publisher |
Meteoritics & Planetary Science Archives |
publishDate |
2005 |
url |
https://journals.uair.arizona.edu/index.php/maps/article/view/15210 |
long_lat |
ENVELOPE(-88.000,-88.000,75.252,75.252) |
geographic |
Arctic Devon Island |
geographic_facet |
Arctic Devon Island |
genre |
Arctic Devon Island |
genre_facet |
Arctic Devon Island |
op_source |
Meteoritics & Planetary Science Archives; Vol 40, No 12 (2005); 1789-1812 1945-5100 1086-9379 |
op_relation |
https://journals.uair.arizona.edu/index.php/maps/article/view/15210/15198 https://journals.uair.arizona.edu/index.php/maps/article/view/15210 |
_version_ |
1766336000743702528 |