A case study of impact-induced hydrothermal activity: The Haughton impact structure, Devon Island, Canadian High Arctic
The well-preserved state and excellent exposure at the 39 Ma Haughton impact structure, 23 km in diameter, allows a clearer picture to be made of the nature and distribution of hydrothermal deposits within mid-size complex impact craters. A moderate- to low-temperature hydrothermal system was genera...
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ftunivarizonaojs:oai:journals.uair.arizona.edu:article/15213 2023-05-15T15:17:31+02:00 A case study of impact-induced hydrothermal activity: The Haughton impact structure, Devon Island, Canadian High Arctic Osinski, Gordon R. Lee, Pascal Parnell, John Spray, John G. Baron, Martin 2005-01-01 application/pdf https://journals.uair.arizona.edu/index.php/maps/article/view/15213 eng eng Meteoritics & Planetary Science Archives https://journals.uair.arizona.edu/index.php/maps/article/view/15213/15201 https://journals.uair.arizona.edu/index.php/maps/article/view/15213 Meteoritics & Planetary Science Archives; Vol 40, No 12 (2005); 1859-1877 1945-5100 1086-9379 Geothermometry;Haughton impact structure;Hydrothermal deposits;Impact craters;Fluid inclusions info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article 2005 ftunivarizonaojs 2020-11-14T17:53:00Z The well-preserved state and excellent exposure at the 39 Ma Haughton impact structure, 23 km in diameter, allows a clearer picture to be made of the nature and distribution of hydrothermal deposits within mid-size complex impact craters. A moderate- to low-temperature hydrothermal system was generated at Haughton by the interaction of groundwaters with the hot impact melt breccias that filled the interior of the crater. Four distinct settings and styles of hydrothermal mineralization are recognized at Haughton: a) vugs and veins within the impact melt breccias, with an increase in intensity of alteration towards the base; b) cementation of brecciated lithologies in the interior of the central uplift; c) intense veining around the heavily faulted and fractured outer margin of the central uplift; and d) hydrothermal pipe structures or gossans and mineralization along fault surfaces around the faulted crater rim. Each setting is associated with a different suite of hydrothermal minerals that were deposited at different stages in the development of the hydrothermal system. Minor, early quartz precipitation in the impact melt breccias was followed by the deposition of calcite and marcasite within cavities and fractures, plus minor celestite, barite, and fluorite. This occurred at temperatures of at least 200 C and down to 100-120 C. Hydrothermal circulation through the faulted crater rim with the deposition of calcite, quartz, marcasite, and pyrite, occurred at similar temperatures. Quartz mineralization within breccias of the interior of the central uplift occurred in two distinct episodes (~250 down to 90 C, and 60 C). With continued cooling (90 C), calcite and quartz were precipitated in vugs and veins within the impact melt breccias. Calcite veining around the outer margin of the central uplift occurred at temperatures of ~150 C down to 60 C. Mobilization of hydrocarbons from the country rocks occurred during formation of the higher temperature calcite veins (80 C). Appreciation of the structural features of impact craters has proven to be key to understanding the distribution of hydrothermal deposits at Haughton. 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 |
Geothermometry;Haughton impact structure;Hydrothermal deposits;Impact craters;Fluid inclusions |
spellingShingle |
Geothermometry;Haughton impact structure;Hydrothermal deposits;Impact craters;Fluid inclusions Osinski, Gordon R. Lee, Pascal Parnell, John Spray, John G. Baron, Martin A case study of impact-induced hydrothermal activity: The Haughton impact structure, Devon Island, Canadian High Arctic |
topic_facet |
Geothermometry;Haughton impact structure;Hydrothermal deposits;Impact craters;Fluid inclusions |
description |
The well-preserved state and excellent exposure at the 39 Ma Haughton impact structure, 23 km in diameter, allows a clearer picture to be made of the nature and distribution of hydrothermal deposits within mid-size complex impact craters. A moderate- to low-temperature hydrothermal system was generated at Haughton by the interaction of groundwaters with the hot impact melt breccias that filled the interior of the crater. Four distinct settings and styles of hydrothermal mineralization are recognized at Haughton: a) vugs and veins within the impact melt breccias, with an increase in intensity of alteration towards the base; b) cementation of brecciated lithologies in the interior of the central uplift; c) intense veining around the heavily faulted and fractured outer margin of the central uplift; and d) hydrothermal pipe structures or gossans and mineralization along fault surfaces around the faulted crater rim. Each setting is associated with a different suite of hydrothermal minerals that were deposited at different stages in the development of the hydrothermal system. Minor, early quartz precipitation in the impact melt breccias was followed by the deposition of calcite and marcasite within cavities and fractures, plus minor celestite, barite, and fluorite. This occurred at temperatures of at least 200 C and down to 100-120 C. Hydrothermal circulation through the faulted crater rim with the deposition of calcite, quartz, marcasite, and pyrite, occurred at similar temperatures. Quartz mineralization within breccias of the interior of the central uplift occurred in two distinct episodes (~250 down to 90 C, and 60 C). With continued cooling (90 C), calcite and quartz were precipitated in vugs and veins within the impact melt breccias. Calcite veining around the outer margin of the central uplift occurred at temperatures of ~150 C down to 60 C. Mobilization of hydrocarbons from the country rocks occurred during formation of the higher temperature calcite veins (80 C). Appreciation of the structural features of impact craters has proven to be key to understanding the distribution of hydrothermal deposits at Haughton. |
format |
Article in Journal/Newspaper |
author |
Osinski, Gordon R. Lee, Pascal Parnell, John Spray, John G. Baron, Martin |
author_facet |
Osinski, Gordon R. Lee, Pascal Parnell, John Spray, John G. Baron, Martin |
author_sort |
Osinski, Gordon R. |
title |
A case study of impact-induced hydrothermal activity: The Haughton impact structure, Devon Island, Canadian High Arctic |
title_short |
A case study of impact-induced hydrothermal activity: The Haughton impact structure, Devon Island, Canadian High Arctic |
title_full |
A case study of impact-induced hydrothermal activity: The Haughton impact structure, Devon Island, Canadian High Arctic |
title_fullStr |
A case study of impact-induced hydrothermal activity: The Haughton impact structure, Devon Island, Canadian High Arctic |
title_full_unstemmed |
A case study of impact-induced hydrothermal activity: The Haughton impact structure, Devon Island, Canadian High Arctic |
title_sort |
case study of impact-induced hydrothermal activity: 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/15213 |
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); 1859-1877 1945-5100 1086-9379 |
op_relation |
https://journals.uair.arizona.edu/index.php/maps/article/view/15213/15201 https://journals.uair.arizona.edu/index.php/maps/article/view/15213 |
_version_ |
1766347754948263936 |