ARCTIC Clastic Sedimentology of the Beaufort Formation, Prince Patrick Island, Canadian Arctic Islands: Late Tertiary Sandy Braided River Deposits with Woody Detritus Beds
ABSTRACT. The Beaufort Formation (probably of Pliocene age) exposed on Prince Patrick Island in the western Canadian Arctic Islands is an unlithified and poorly exposed unit consisting of the following assemblage of facies: A) clast-supported gravel (channel floor lags, longitudinal bars); B) cross-...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.556.605 2023-05-15T14:19:48+02:00 ARCTIC Clastic Sedimentology of the Beaufort Formation, Prince Patrick Island, Canadian Arctic Islands: Late Tertiary Sandy Braided River Deposits with Woody Detritus Beds Jonathan R. Devaney The Pennsylvania State University CiteSeerX Archives 1990 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.556.605 http://pubs.aina.ucalgary.ca/arctic/Arctic44-3-206.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.556.605 http://pubs.aina.ucalgary.ca/arctic/Arctic44-3-206.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://pubs.aina.ucalgary.ca/arctic/Arctic44-3-206.pdf text 1990 ftciteseerx 2016-01-08T11:48:27Z ABSTRACT. The Beaufort Formation (probably of Pliocene age) exposed on Prince Patrick Island in the western Canadian Arctic Islands is an unlithified and poorly exposed unit consisting of the following assemblage of facies: A) clast-supported gravel (channel floor lags, longitudinal bars); B) cross-bedded sand (transverse bars, channel floor dunes); C) rippled sand; D) horizontally laminated fines- mixed sand, silt and woody detritus; E) clay-rich mud (overbank suspension deposits); and F) woody plant detritus, beds of flat-lying logs, sticks, twigs, wood chips, bark, leaves, needles, seeds, and moss (overbank suspension and traction deposits). Minor facies include pebble bands, plane laminated sand, and a thin bouldery basal gravel horizon. The sediments are interpreted to be sandy braided river deposits that are notable for their egionally abundant beds of coarse woody detritus, a feature uncommon in most ancient braided fluvial deposits. Facies A to C represent bar and channel deposits, with Facies B the most abundant. Facies C to F are relatively minor and are interpreted as low-stage overbank deposits such as abandoned channel fills. Rapid, small-scale lateral facies changes are the norm. Well-defined fining-upward sequences 1.2-2.5 m thick are uncommon. The relative rarity, thinness, and lateral impersistence of overbank facies compared to bar-channel facies suggests that significant amounts of meandering river deposits are not present. The common allochthonous woody fossils were sourced from boreal forests nearby. A thin horizon in one stratigraphic section contains tidal bundles with slack water mud drapes. The Beaufort sediments exposed on Prince Patrick Island appear to be the most proximal portion of a northwest- (offshore-) thickening clastic sheet. The eroded upper surface of the Beaufort Formation, of regional extent on the western arctic coastal plain, is covered with Text Arctic Arctic Prince Patrick Island Unknown Arctic Prince Patrick Island ENVELOPE(-119.507,-119.507,76.751,76.751) |
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Open Polar |
collection |
Unknown |
op_collection_id |
ftciteseerx |
language |
English |
description |
ABSTRACT. The Beaufort Formation (probably of Pliocene age) exposed on Prince Patrick Island in the western Canadian Arctic Islands is an unlithified and poorly exposed unit consisting of the following assemblage of facies: A) clast-supported gravel (channel floor lags, longitudinal bars); B) cross-bedded sand (transverse bars, channel floor dunes); C) rippled sand; D) horizontally laminated fines- mixed sand, silt and woody detritus; E) clay-rich mud (overbank suspension deposits); and F) woody plant detritus, beds of flat-lying logs, sticks, twigs, wood chips, bark, leaves, needles, seeds, and moss (overbank suspension and traction deposits). Minor facies include pebble bands, plane laminated sand, and a thin bouldery basal gravel horizon. The sediments are interpreted to be sandy braided river deposits that are notable for their egionally abundant beds of coarse woody detritus, a feature uncommon in most ancient braided fluvial deposits. Facies A to C represent bar and channel deposits, with Facies B the most abundant. Facies C to F are relatively minor and are interpreted as low-stage overbank deposits such as abandoned channel fills. Rapid, small-scale lateral facies changes are the norm. Well-defined fining-upward sequences 1.2-2.5 m thick are uncommon. The relative rarity, thinness, and lateral impersistence of overbank facies compared to bar-channel facies suggests that significant amounts of meandering river deposits are not present. The common allochthonous woody fossils were sourced from boreal forests nearby. A thin horizon in one stratigraphic section contains tidal bundles with slack water mud drapes. The Beaufort sediments exposed on Prince Patrick Island appear to be the most proximal portion of a northwest- (offshore-) thickening clastic sheet. The eroded upper surface of the Beaufort Formation, of regional extent on the western arctic coastal plain, is covered with |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Jonathan R. Devaney |
spellingShingle |
Jonathan R. Devaney ARCTIC Clastic Sedimentology of the Beaufort Formation, Prince Patrick Island, Canadian Arctic Islands: Late Tertiary Sandy Braided River Deposits with Woody Detritus Beds |
author_facet |
Jonathan R. Devaney |
author_sort |
Jonathan R. Devaney |
title |
ARCTIC Clastic Sedimentology of the Beaufort Formation, Prince Patrick Island, Canadian Arctic Islands: Late Tertiary Sandy Braided River Deposits with Woody Detritus Beds |
title_short |
ARCTIC Clastic Sedimentology of the Beaufort Formation, Prince Patrick Island, Canadian Arctic Islands: Late Tertiary Sandy Braided River Deposits with Woody Detritus Beds |
title_full |
ARCTIC Clastic Sedimentology of the Beaufort Formation, Prince Patrick Island, Canadian Arctic Islands: Late Tertiary Sandy Braided River Deposits with Woody Detritus Beds |
title_fullStr |
ARCTIC Clastic Sedimentology of the Beaufort Formation, Prince Patrick Island, Canadian Arctic Islands: Late Tertiary Sandy Braided River Deposits with Woody Detritus Beds |
title_full_unstemmed |
ARCTIC Clastic Sedimentology of the Beaufort Formation, Prince Patrick Island, Canadian Arctic Islands: Late Tertiary Sandy Braided River Deposits with Woody Detritus Beds |
title_sort |
arctic clastic sedimentology of the beaufort formation, prince patrick island, canadian arctic islands: late tertiary sandy braided river deposits with woody detritus beds |
publishDate |
1990 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.556.605 http://pubs.aina.ucalgary.ca/arctic/Arctic44-3-206.pdf |
long_lat |
ENVELOPE(-119.507,-119.507,76.751,76.751) |
geographic |
Arctic Prince Patrick Island |
geographic_facet |
Arctic Prince Patrick Island |
genre |
Arctic Arctic Prince Patrick Island |
genre_facet |
Arctic Arctic Prince Patrick Island |
op_source |
http://pubs.aina.ucalgary.ca/arctic/Arctic44-3-206.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.556.605 http://pubs.aina.ucalgary.ca/arctic/Arctic44-3-206.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766291524712136704 |