Sedimentology and depositional environment of the Middle Ordovician Black Cove and American Tickle Formations - western Newfoundland
2013 Summer. Includes bibliographical references. The Middle Ordovician (Darriwilian) Black Cove (Nicholsonograptus fasciculatus biozone) and overlying American Tickle Formations (Pterograptus elegans biozone) represent the lower portion of the Goose Tickle Group located in western Newfoundland. The...
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ftmountainschol:oai:mountainscholar.org:10217/80273 2023-06-11T04:14:10+02:00 Sedimentology and depositional environment of the Middle Ordovician Black Cove and American Tickle Formations - western Newfoundland Petrowsky, Matthew J. Egenhoff, Sven Hannah, Judy Borch, Thomas Hill, Ronald 2007-01-03T05:56:00Z born digital masters theses application/pdf http://hdl.handle.net/10217/80273 English eng eng Colorado State University. Libraries 2000-2019 - CSU Theses and Dissertations Petrowsky_colostate_0053N_11790.pdf http://hdl.handle.net/10217/80273 Copyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright. Text 2007 ftmountainschol 2023-04-29T17:47:41Z 2013 Summer. Includes bibliographical references. The Middle Ordovician (Darriwilian) Black Cove (Nicholsonograptus fasciculatus biozone) and overlying American Tickle Formations (Pterograptus elegans biozone) represent the lower portion of the Goose Tickle Group located in western Newfoundland. The succession consists of a total of seven lithofacies, four siliciclastic and three carbonate that are grouped into three distinct facies associations. Facies association 1 (FA1) contains intercalations of clay-rich mudstones (Facies A) with silt-bearing, clay-rich mudstones (Facies B) and in places, foresets of alternating siltstone and clay-rich laminae (Facies C). Facies association 2 (FA2) consists of rocks within FA1 and localized massive, silt-to-sandstones (Facies D). Facies association 3 (FA3) is characterized by carbonate mud-to-wackestones (Facies E), laminated and massive, peloidal, skeletal packstones (Facies F), and skeletal grainstones (Facies G). Each of the three facies associations is interpreted to represent a distinct position on a proximal to distal transect of a shelf that faced the proto-Atlantic. Bedload transport processes are present throughout the succession and are indicated by sedimentary structures such as ripples, planar laminations, mudstone rip-up clasts and lenticular siltstone laminae. These high-energy event deposits likely represent episodically occurring storms and are intercalated into fine-grained fair-weather sediments (Facies A, C, and E). The Black Cove and American Tickle Formations as a whole show an overall shallowing-upward trend that is subdivided into four coarsening-upward parasequences marked by carbonates (FA3) directly overlying fine-grained siliciclastic mudstones (FA1 and FA2). Each of these parasequences is interpreted to represent a lowstand unit attributed to a sea level fall. A comparison with time-equivalent lowstands worldwide suggests that at least two of these lowstands are most likely tectonically-induced. The presence of characteristic shelf sediments ... Text Newfoundland Mountain Scholar (Digital Collections of Colorado and Wyoming) Tickle ENVELOPE(-67.733,-67.733,-67.116,-67.116) Goose Tickle ENVELOPE(-56.017,-56.017,51.260,51.260) American Tickle ENVELOPE(-55.918,-55.918,51.212,51.212) |
institution |
Open Polar |
collection |
Mountain Scholar (Digital Collections of Colorado and Wyoming) |
op_collection_id |
ftmountainschol |
language |
English |
description |
2013 Summer. Includes bibliographical references. The Middle Ordovician (Darriwilian) Black Cove (Nicholsonograptus fasciculatus biozone) and overlying American Tickle Formations (Pterograptus elegans biozone) represent the lower portion of the Goose Tickle Group located in western Newfoundland. The succession consists of a total of seven lithofacies, four siliciclastic and three carbonate that are grouped into three distinct facies associations. Facies association 1 (FA1) contains intercalations of clay-rich mudstones (Facies A) with silt-bearing, clay-rich mudstones (Facies B) and in places, foresets of alternating siltstone and clay-rich laminae (Facies C). Facies association 2 (FA2) consists of rocks within FA1 and localized massive, silt-to-sandstones (Facies D). Facies association 3 (FA3) is characterized by carbonate mud-to-wackestones (Facies E), laminated and massive, peloidal, skeletal packstones (Facies F), and skeletal grainstones (Facies G). Each of the three facies associations is interpreted to represent a distinct position on a proximal to distal transect of a shelf that faced the proto-Atlantic. Bedload transport processes are present throughout the succession and are indicated by sedimentary structures such as ripples, planar laminations, mudstone rip-up clasts and lenticular siltstone laminae. These high-energy event deposits likely represent episodically occurring storms and are intercalated into fine-grained fair-weather sediments (Facies A, C, and E). The Black Cove and American Tickle Formations as a whole show an overall shallowing-upward trend that is subdivided into four coarsening-upward parasequences marked by carbonates (FA3) directly overlying fine-grained siliciclastic mudstones (FA1 and FA2). Each of these parasequences is interpreted to represent a lowstand unit attributed to a sea level fall. A comparison with time-equivalent lowstands worldwide suggests that at least two of these lowstands are most likely tectonically-induced. The presence of characteristic shelf sediments ... |
author2 |
Egenhoff, Sven Hannah, Judy Borch, Thomas Hill, Ronald |
format |
Text |
author |
Petrowsky, Matthew J. |
spellingShingle |
Petrowsky, Matthew J. Sedimentology and depositional environment of the Middle Ordovician Black Cove and American Tickle Formations - western Newfoundland |
author_facet |
Petrowsky, Matthew J. |
author_sort |
Petrowsky, Matthew J. |
title |
Sedimentology and depositional environment of the Middle Ordovician Black Cove and American Tickle Formations - western Newfoundland |
title_short |
Sedimentology and depositional environment of the Middle Ordovician Black Cove and American Tickle Formations - western Newfoundland |
title_full |
Sedimentology and depositional environment of the Middle Ordovician Black Cove and American Tickle Formations - western Newfoundland |
title_fullStr |
Sedimentology and depositional environment of the Middle Ordovician Black Cove and American Tickle Formations - western Newfoundland |
title_full_unstemmed |
Sedimentology and depositional environment of the Middle Ordovician Black Cove and American Tickle Formations - western Newfoundland |
title_sort |
sedimentology and depositional environment of the middle ordovician black cove and american tickle formations - western newfoundland |
publisher |
Colorado State University. Libraries |
publishDate |
2007 |
url |
http://hdl.handle.net/10217/80273 |
long_lat |
ENVELOPE(-67.733,-67.733,-67.116,-67.116) ENVELOPE(-56.017,-56.017,51.260,51.260) ENVELOPE(-55.918,-55.918,51.212,51.212) |
geographic |
Tickle Goose Tickle American Tickle |
geographic_facet |
Tickle Goose Tickle American Tickle |
genre |
Newfoundland |
genre_facet |
Newfoundland |
op_relation |
2000-2019 - CSU Theses and Dissertations Petrowsky_colostate_0053N_11790.pdf http://hdl.handle.net/10217/80273 |
op_rights |
Copyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright. |
_version_ |
1768391989697445888 |