The Stratigraphy, Sedimentology, and Fossils of the Haughton Formation: A Post‐Impact Crater‐Fill, Devon Island, N.W.T., Canada

Abstract— After the impact that formed Haughton crater, 22.4 ± 1.4 Ma ago (early Miocene), the cavity filled with water and began to accumulate lacustrine sediments. These preserve detailed evidence of pre‐impact stratigraphy and post‐impact morphology and development of the crater, as well as of th...

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Published in:Meteoritics
Main Authors: Hickey, Leo J., Johnson, Kirk R., Dawson, Mary R.
Format: Article in Journal/Newspaper
Language:English
Published: Wiley 1988
Subjects:
Online Access:http://dx.doi.org/10.1111/j.1945-5100.1988.tb01284.x
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spelling crwiley:10.1111/j.1945-5100.1988.tb01284.x 2024-09-09T19:37:58+00:00 The Stratigraphy, Sedimentology, and Fossils of the Haughton Formation: A Post‐Impact Crater‐Fill, Devon Island, N.W.T., Canada Hickey, Leo J. Johnson, Kirk R. Dawson, Mary R. 1988 http://dx.doi.org/10.1111/j.1945-5100.1988.tb01284.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1945-5100.1988.tb01284.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1945-5100.1988.tb01284.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Meteoritics volume 23, issue 3, page 221-231 ISSN 0026-1114 journal-article 1988 crwiley https://doi.org/10.1111/j.1945-5100.1988.tb01284.x 2024-06-18T04:10:30Z Abstract— After the impact that formed Haughton crater, 22.4 ± 1.4 Ma ago (early Miocene), the cavity filled with water and began to accumulate lacustrine sediments. These preserve detailed evidence of pre‐impact stratigraphy and post‐impact morphology and development of the crater, as well as of the climatic and biotic regime in which it lay. In this report we formally designate these sediments as the Haughton Formation, of which only a 48 m thick remnant covering approximately 7 km 2 still exists. Dolomite‐rich, poorly‐sorted silt, fine sand, and mud are the principal lithologies. The formation unconformably overlies a blanket of allochthonous impact breccia forming the floor of the original crater. Presence of a debris‐flow deposit in the base of the sequence indicates that lacustine deposition began very shortly after crater formation. The Haughton Formation contains a moderately diverse and highly endemic vertebrate fauna as well as palynomorphs and plant macrofossils that indicate a cool‐temperate climatic regime. A small percentage of reworked Late Cretaceous and early Tertiary palynomorphs point to the former existence of the Eureka Sound Formation in the drainage area of the crater. In addition, the distribution of the lake beds indicates the absence of an inner ring on the west side of the crater, and the 3° to 3.5° inward dip of Haughton strata implies that the central mass has subsided approximately 300 to 350 m since deposition began. Article in Journal/Newspaper Devon Island Eureka Sound Wiley Online Library Canada Devon Island ENVELOPE(-88.000,-88.000,75.252,75.252) Eureka ENVELOPE(-85.940,-85.940,79.990,79.990) Eureka Sound ENVELOPE(-84.999,-84.999,79.002,79.002) Meteoritics 23 3 221 231
institution Open Polar
collection Wiley Online Library
op_collection_id crwiley
language English
description Abstract— After the impact that formed Haughton crater, 22.4 ± 1.4 Ma ago (early Miocene), the cavity filled with water and began to accumulate lacustrine sediments. These preserve detailed evidence of pre‐impact stratigraphy and post‐impact morphology and development of the crater, as well as of the climatic and biotic regime in which it lay. In this report we formally designate these sediments as the Haughton Formation, of which only a 48 m thick remnant covering approximately 7 km 2 still exists. Dolomite‐rich, poorly‐sorted silt, fine sand, and mud are the principal lithologies. The formation unconformably overlies a blanket of allochthonous impact breccia forming the floor of the original crater. Presence of a debris‐flow deposit in the base of the sequence indicates that lacustine deposition began very shortly after crater formation. The Haughton Formation contains a moderately diverse and highly endemic vertebrate fauna as well as palynomorphs and plant macrofossils that indicate a cool‐temperate climatic regime. A small percentage of reworked Late Cretaceous and early Tertiary palynomorphs point to the former existence of the Eureka Sound Formation in the drainage area of the crater. In addition, the distribution of the lake beds indicates the absence of an inner ring on the west side of the crater, and the 3° to 3.5° inward dip of Haughton strata implies that the central mass has subsided approximately 300 to 350 m since deposition began.
format Article in Journal/Newspaper
author Hickey, Leo J.
Johnson, Kirk R.
Dawson, Mary R.
spellingShingle Hickey, Leo J.
Johnson, Kirk R.
Dawson, Mary R.
The Stratigraphy, Sedimentology, and Fossils of the Haughton Formation: A Post‐Impact Crater‐Fill, Devon Island, N.W.T., Canada
author_facet Hickey, Leo J.
Johnson, Kirk R.
Dawson, Mary R.
author_sort Hickey, Leo J.
title The Stratigraphy, Sedimentology, and Fossils of the Haughton Formation: A Post‐Impact Crater‐Fill, Devon Island, N.W.T., Canada
title_short The Stratigraphy, Sedimentology, and Fossils of the Haughton Formation: A Post‐Impact Crater‐Fill, Devon Island, N.W.T., Canada
title_full The Stratigraphy, Sedimentology, and Fossils of the Haughton Formation: A Post‐Impact Crater‐Fill, Devon Island, N.W.T., Canada
title_fullStr The Stratigraphy, Sedimentology, and Fossils of the Haughton Formation: A Post‐Impact Crater‐Fill, Devon Island, N.W.T., Canada
title_full_unstemmed The Stratigraphy, Sedimentology, and Fossils of the Haughton Formation: A Post‐Impact Crater‐Fill, Devon Island, N.W.T., Canada
title_sort stratigraphy, sedimentology, and fossils of the haughton formation: a post‐impact crater‐fill, devon island, n.w.t., canada
publisher Wiley
publishDate 1988
url http://dx.doi.org/10.1111/j.1945-5100.1988.tb01284.x
https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1945-5100.1988.tb01284.x
https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1945-5100.1988.tb01284.x
long_lat ENVELOPE(-88.000,-88.000,75.252,75.252)
ENVELOPE(-85.940,-85.940,79.990,79.990)
ENVELOPE(-84.999,-84.999,79.002,79.002)
geographic Canada
Devon Island
Eureka
Eureka Sound
geographic_facet Canada
Devon Island
Eureka
Eureka Sound
genre Devon Island
Eureka Sound
genre_facet Devon Island
Eureka Sound
op_source Meteoritics
volume 23, issue 3, page 221-231
ISSN 0026-1114
op_rights http://onlinelibrary.wiley.com/termsAndConditions#vor
op_doi https://doi.org/10.1111/j.1945-5100.1988.tb01284.x
container_title Meteoritics
container_volume 23
container_issue 3
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