Carbonate sedimentation in an evolving Middle Ordovician foreland basin, western Newfoundland
Table Head and Goose Tickle group strata in western Newfoundland are a deepening-upward, carbonate to clastic sequence deposited on the convergent, paleosouth-facing, North American continental margin during Middle Ordovician time. Preceding passive margin platform growth was abruptly terminated by...
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Memorial University of Newfoundland
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ftmemorialuniv:oai:research.library.mun.ca:6764 2023-10-01T03:57:35+02:00 Carbonate sedimentation in an evolving Middle Ordovician foreland basin, western Newfoundland Stenzel, Sheila Rae 1991 application/pdf https://research.library.mun.ca/6764/ https://research.library.mun.ca/6764/5/SheilaRaeStenzel.pdf en eng Memorial University of Newfoundland https://research.library.mun.ca/6764/5/SheilaRaeStenzel.pdf Stenzel, Sheila Rae <https://research.library.mun.ca/view/creator_az/Stenzel=3ASheila_Rae=3A=3A.html> (1991) Carbonate sedimentation in an evolving Middle Ordovician foreland basin, western Newfoundland. Doctoral (PhD) thesis, Memorial University of Newfoundland. thesis_license Thesis NonPeerReviewed 1991 ftmemorialuniv 2023-09-03T06:46:04Z Table Head and Goose Tickle group strata in western Newfoundland are a deepening-upward, carbonate to clastic sequence deposited on the convergent, paleosouth-facing, North American continental margin during Middle Ordovician time. Preceding passive margin platform growth was abruptly terminated by widespread, early Middle Ordovician block-faulting and differential uplift (St. George Unconformity) caused by migration of a peripheral bulge across the platform interior. Subsequent sea level rise led to widespread peritidal, then shallow subtidal, carbonate deposition (Table Point Formation) on a tectonically unstable platform that formed the western flank of the evolving Taconic foreland basin. Synsedimentary faulting and differential subsidence profoundly influenced sedimentation, leading to marked variations in thickness and abrupt lateral and vertical changes in platformal carbonate lithofacies. Episodic seismicity and changes in slope triggered gravitational slides and flows. This platform was in turn tectonically drowned by extensional faulting and differential collapse as it became part of the outer trench slope of the subduction zone. Thin-bedded, hemipelagic and turbiditic limestone and shale (Table Cove Formation) accumulated on discontinuous, gently-dipping carbonate slopes and basin margins of variable duration and facing direction. Massive, polymictic, carbonate debris flow conglomerate, calciturbidite and shale (Cape Cormorant Formation) were deposited in an isolated basin adjacent to a high relief fault scarp that exhumed several hundred metres of buried, older, passive margin platformal carbonate. Laminated black shale (Black Cove Formation) accumulated in remote, sediment-starved basins, and on the tops of isolated, rapidly foundered, relict platforms. As the (collapsed) platform entered the trench it was buried by siliciclastic flysch (American Tickle Formation and Mainland Sandstone) derived from an advancing accretionary prism. Terrigenous mud, silt and sand, transported mostly by turbidity ... Thesis Newfoundland Memorial University of Newfoundland: Research Repository American Tickle ENVELOPE(-55.918,-55.918,51.212,51.212) Goose Tickle ENVELOPE(-56.017,-56.017,51.260,51.260) Table Cove ENVELOPE(-57.532,-57.532,50.350,50.350) Table Head ENVELOPE(-55.698,-55.698,52.083,52.083) Tickle ENVELOPE(-67.733,-67.733,-67.116,-67.116) |
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Open Polar |
collection |
Memorial University of Newfoundland: Research Repository |
op_collection_id |
ftmemorialuniv |
language |
English |
description |
Table Head and Goose Tickle group strata in western Newfoundland are a deepening-upward, carbonate to clastic sequence deposited on the convergent, paleosouth-facing, North American continental margin during Middle Ordovician time. Preceding passive margin platform growth was abruptly terminated by widespread, early Middle Ordovician block-faulting and differential uplift (St. George Unconformity) caused by migration of a peripheral bulge across the platform interior. Subsequent sea level rise led to widespread peritidal, then shallow subtidal, carbonate deposition (Table Point Formation) on a tectonically unstable platform that formed the western flank of the evolving Taconic foreland basin. Synsedimentary faulting and differential subsidence profoundly influenced sedimentation, leading to marked variations in thickness and abrupt lateral and vertical changes in platformal carbonate lithofacies. Episodic seismicity and changes in slope triggered gravitational slides and flows. This platform was in turn tectonically drowned by extensional faulting and differential collapse as it became part of the outer trench slope of the subduction zone. Thin-bedded, hemipelagic and turbiditic limestone and shale (Table Cove Formation) accumulated on discontinuous, gently-dipping carbonate slopes and basin margins of variable duration and facing direction. Massive, polymictic, carbonate debris flow conglomerate, calciturbidite and shale (Cape Cormorant Formation) were deposited in an isolated basin adjacent to a high relief fault scarp that exhumed several hundred metres of buried, older, passive margin platformal carbonate. Laminated black shale (Black Cove Formation) accumulated in remote, sediment-starved basins, and on the tops of isolated, rapidly foundered, relict platforms. As the (collapsed) platform entered the trench it was buried by siliciclastic flysch (American Tickle Formation and Mainland Sandstone) derived from an advancing accretionary prism. Terrigenous mud, silt and sand, transported mostly by turbidity ... |
format |
Thesis |
author |
Stenzel, Sheila Rae |
spellingShingle |
Stenzel, Sheila Rae Carbonate sedimentation in an evolving Middle Ordovician foreland basin, western Newfoundland |
author_facet |
Stenzel, Sheila Rae |
author_sort |
Stenzel, Sheila Rae |
title |
Carbonate sedimentation in an evolving Middle Ordovician foreland basin, western Newfoundland |
title_short |
Carbonate sedimentation in an evolving Middle Ordovician foreland basin, western Newfoundland |
title_full |
Carbonate sedimentation in an evolving Middle Ordovician foreland basin, western Newfoundland |
title_fullStr |
Carbonate sedimentation in an evolving Middle Ordovician foreland basin, western Newfoundland |
title_full_unstemmed |
Carbonate sedimentation in an evolving Middle Ordovician foreland basin, western Newfoundland |
title_sort |
carbonate sedimentation in an evolving middle ordovician foreland basin, western newfoundland |
publisher |
Memorial University of Newfoundland |
publishDate |
1991 |
url |
https://research.library.mun.ca/6764/ https://research.library.mun.ca/6764/5/SheilaRaeStenzel.pdf |
long_lat |
ENVELOPE(-55.918,-55.918,51.212,51.212) ENVELOPE(-56.017,-56.017,51.260,51.260) ENVELOPE(-57.532,-57.532,50.350,50.350) ENVELOPE(-55.698,-55.698,52.083,52.083) ENVELOPE(-67.733,-67.733,-67.116,-67.116) |
geographic |
American Tickle Goose Tickle Table Cove Table Head Tickle |
geographic_facet |
American Tickle Goose Tickle Table Cove Table Head Tickle |
genre |
Newfoundland |
genre_facet |
Newfoundland |
op_relation |
https://research.library.mun.ca/6764/5/SheilaRaeStenzel.pdf Stenzel, Sheila Rae <https://research.library.mun.ca/view/creator_az/Stenzel=3ASheila_Rae=3A=3A.html> (1991) Carbonate sedimentation in an evolving Middle Ordovician foreland basin, western Newfoundland. Doctoral (PhD) thesis, Memorial University of Newfoundland. |
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thesis_license |
_version_ |
1778529236763541504 |