The mid-carboniferous Arctic Lake Formation, northwestern Stikine terrane, British Columbia
The Lower Devonian to Upper Permian Stikine Assemblage is well exposed in northwestern British Columbia, near the west-central margin of the Stikine terrane. The stratigraphic base of the assemblage is not exposed and the Upper Triassic Stuhini Group disconformably overlies the assemblage locally. T...
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ftunivbruxelles:oai:dipot.ulb.ac.be:2013/166546 2023-05-15T14:57:44+02:00 The mid-carboniferous Arctic Lake Formation, northwestern Stikine terrane, British Columbia Gunning, Michael Fedorowski, Jerzy Orchard, Michael Bamber, F.W. Friedman, R. Rui, Lin Anderson, Robert Mamet, Bernard Mortensen, James Keith 2007-03 No full-text files http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/166546 en eng uri/info:doi/10.2113/gscpgbull.55.1.21 uri/info:scp/56849123252 http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/166546 Bulletin of Canadian petroleum geology, 55 (1 Géologie Pétrologie Géochimie Sciences de la terre et du cosmos Sciences de l'ingénieur info:eu-repo/semantics/article info:ulb-repo/semantics/articlePeerReview info:ulb-repo/semantics/openurl/article 2007 ftunivbruxelles 2022-06-12T20:36:53Z The Lower Devonian to Upper Permian Stikine Assemblage is well exposed in northwestern British Columbia, near the west-central margin of the Stikine terrane. The stratigraphic base of the assemblage is not exposed and the Upper Triassic Stuhini Group disconformably overlies the assemblage locally. The assemblage consists mainly of various types of volcanic rocks, and there is a large, polyphase, Devono-Mississippian sub-volcanic plutonic complex. The assemblage includes a distinctive, but laterally discontinuous mid-Carboniferous limestone named the Arctic Lake Formation. Facies are mainly locally re-worked, well-bedded skeletal wackestone, but whole fossil floatstone and intraformational olistostromal deposits are present. Stratigraphic thickness varies from 32 to 80 metres. Stratigraphic contacts with bounding Lower and Upper Carboniferous successions are conformable and intergradational, but paraconformities may also be present. The formation records weak development of disjointed carbonate ramps on volcanic highlands. Neritic faunal assemblages have warm water, open marine affinity. The formation spans the Serpukhovian-Bashkirian boundary and encompasses microfacies assigned to Global Foraminiferal zones 17, 18 and 20. Integrated foraminiferal-coralconodont biostratigraphy and uranium-lead geochronology support a circa 350 Ma age for the Tournaisian-Visean boundary, and a circa 320 Ma age for the Serpukhovian-Bashkirian (Mississippian-Pennsylvanian) boundary. SCOPUS: ar.j info:eu-repo/semantics/published Article in Journal/Newspaper Arctic Foraminifera* DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB) Arctic Arctic Lake ENVELOPE(-130.826,-130.826,57.231,57.231) Stikine ENVELOPE(-131.803,-131.803,56.699,56.699) |
institution |
Open Polar |
collection |
DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB) |
op_collection_id |
ftunivbruxelles |
language |
English |
topic |
Géologie Pétrologie Géochimie Sciences de la terre et du cosmos Sciences de l'ingénieur |
spellingShingle |
Géologie Pétrologie Géochimie Sciences de la terre et du cosmos Sciences de l'ingénieur Gunning, Michael Fedorowski, Jerzy Orchard, Michael Bamber, F.W. Friedman, R. Rui, Lin Anderson, Robert Mamet, Bernard Mortensen, James Keith The mid-carboniferous Arctic Lake Formation, northwestern Stikine terrane, British Columbia |
topic_facet |
Géologie Pétrologie Géochimie Sciences de la terre et du cosmos Sciences de l'ingénieur |
description |
The Lower Devonian to Upper Permian Stikine Assemblage is well exposed in northwestern British Columbia, near the west-central margin of the Stikine terrane. The stratigraphic base of the assemblage is not exposed and the Upper Triassic Stuhini Group disconformably overlies the assemblage locally. The assemblage consists mainly of various types of volcanic rocks, and there is a large, polyphase, Devono-Mississippian sub-volcanic plutonic complex. The assemblage includes a distinctive, but laterally discontinuous mid-Carboniferous limestone named the Arctic Lake Formation. Facies are mainly locally re-worked, well-bedded skeletal wackestone, but whole fossil floatstone and intraformational olistostromal deposits are present. Stratigraphic thickness varies from 32 to 80 metres. Stratigraphic contacts with bounding Lower and Upper Carboniferous successions are conformable and intergradational, but paraconformities may also be present. The formation records weak development of disjointed carbonate ramps on volcanic highlands. Neritic faunal assemblages have warm water, open marine affinity. The formation spans the Serpukhovian-Bashkirian boundary and encompasses microfacies assigned to Global Foraminiferal zones 17, 18 and 20. Integrated foraminiferal-coralconodont biostratigraphy and uranium-lead geochronology support a circa 350 Ma age for the Tournaisian-Visean boundary, and a circa 320 Ma age for the Serpukhovian-Bashkirian (Mississippian-Pennsylvanian) boundary. SCOPUS: ar.j info:eu-repo/semantics/published |
format |
Article in Journal/Newspaper |
author |
Gunning, Michael Fedorowski, Jerzy Orchard, Michael Bamber, F.W. Friedman, R. Rui, Lin Anderson, Robert Mamet, Bernard Mortensen, James Keith |
author_facet |
Gunning, Michael Fedorowski, Jerzy Orchard, Michael Bamber, F.W. Friedman, R. Rui, Lin Anderson, Robert Mamet, Bernard Mortensen, James Keith |
author_sort |
Gunning, Michael |
title |
The mid-carboniferous Arctic Lake Formation, northwestern Stikine terrane, British Columbia |
title_short |
The mid-carboniferous Arctic Lake Formation, northwestern Stikine terrane, British Columbia |
title_full |
The mid-carboniferous Arctic Lake Formation, northwestern Stikine terrane, British Columbia |
title_fullStr |
The mid-carboniferous Arctic Lake Formation, northwestern Stikine terrane, British Columbia |
title_full_unstemmed |
The mid-carboniferous Arctic Lake Formation, northwestern Stikine terrane, British Columbia |
title_sort |
mid-carboniferous arctic lake formation, northwestern stikine terrane, british columbia |
publishDate |
2007 |
url |
http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/166546 |
long_lat |
ENVELOPE(-130.826,-130.826,57.231,57.231) ENVELOPE(-131.803,-131.803,56.699,56.699) |
geographic |
Arctic Arctic Lake Stikine |
geographic_facet |
Arctic Arctic Lake Stikine |
genre |
Arctic Foraminifera* |
genre_facet |
Arctic Foraminifera* |
op_source |
Bulletin of Canadian petroleum geology, 55 (1 |
op_relation |
uri/info:doi/10.2113/gscpgbull.55.1.21 uri/info:scp/56849123252 http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/166546 |
_version_ |
1766329865196273664 |