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The Quaternary Lancaster Sound trough-mouth fan, NW Baffin Bay
The development of the Lancaster Sound Trough Mouth Fan (TMF) and glacial history in Arctic Canada were studied using a high‐resolution seismic profile across the entire fan and two piston cores. Stacked tills separated by erosion surfaces on the shelf pass seaward through till deltas into thick tra...
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Published in: | Journal of quaternary science 2011-07, Vol.26 (5), p.511-522 |
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creator | Li, Gang Piper, David J.W. Calvin Campbell, D. |
description | The development of the Lancaster Sound Trough Mouth Fan (TMF) and glacial history in Arctic Canada were studied using a high‐resolution seismic profile across the entire fan and two piston cores. Stacked tills separated by erosion surfaces on the shelf pass seaward through till deltas into thick transparent glacigenic debris flow (GDF) deposits on the slope, separated by thin, well‐stratified glaciomarine layers. An age model was built by ties to the Ocean Drilling Program Site 645. The deepest GDF on the seismic profile was indicative of the onset of shelf‐crossing glaciation in the Early Pleistocene. The transition of the growth of Lancaster Sound TMF from an aggradational sequence (unit M) to an aggradational–progradational sequence (unit F) occurred at the Middle Pleistocene transition in glacial cyclicity. In the most recent glacial cycle, GDF sheets were deposited during Heinrich events 4 and 2 according to the correlation of the main detrital carbonate beds in two piston cores. The outmost till wedge reflects the maximum advance of the grounding glacier, far seaward of previously proposed Last Glacial Maximum ice extent. Copyright © 2011 John Wiley & Sons, Ltd. |
doi_str_mv | 10.1002/jqs.1479 |
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Stacked tills separated by erosion surfaces on the shelf pass seaward through till deltas into thick transparent glacigenic debris flow (GDF) deposits on the slope, separated by thin, well‐stratified glaciomarine layers. An age model was built by ties to the Ocean Drilling Program Site 645. The deepest GDF on the seismic profile was indicative of the onset of shelf‐crossing glaciation in the Early Pleistocene. The transition of the growth of Lancaster Sound TMF from an aggradational sequence (unit M) to an aggradational–progradational sequence (unit F) occurred at the Middle Pleistocene transition in glacial cyclicity. In the most recent glacial cycle, GDF sheets were deposited during Heinrich events 4 and 2 according to the correlation of the main detrital carbonate beds in two piston cores. The outmost till wedge reflects the maximum advance of the grounding glacier, far seaward of previously proposed Last Glacial Maximum ice extent. 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In the most recent glacial cycle, GDF sheets were deposited during Heinrich events 4 and 2 according to the correlation of the main detrital carbonate beds in two piston cores. The outmost till wedge reflects the maximum advance of the grounding glacier, far seaward of previously proposed Last Glacial Maximum ice extent. Copyright © 2011 John Wiley & Sons, Ltd.</description><subject>Aggradation</subject><subject>chronology</subject><subject>Deposition</subject><subject>glacigenic debris flow</subject><subject>Mouth</subject><subject>petrology</subject><subject>Pistons</subject><subject>sedimentology</subject><subject>Seismic engineering</subject><subject>Seismic phenomena</subject><subject>Sound</subject><subject>stacking patterns</subject><subject>trough-mouth fan</subject><issn>0267-8179</issn><issn>1099-1417</issn><issn>1099-1417</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><recordid>eNqF0E1Lw0AQgOFFFKxV8Cfk6MHU2WSzHxfBz6qUamml4GXZJLs2NU3a3QTtv3dLRfEgnoZhHubwInSMoYcBorP5yvUwYWIHdTAIEWKC2S7qQERZyDET--jAuTmAv1HooPPJTAejVjXaVsqug4GqMuX8FozrtsqDxtbt6yxc1G0zC4yqToPhNLhUxhSVH-tDtGdU6fTR1-yi59ubydVdOHjs319dDEIVi0iEBptMEA2aRJlIFVGQmogZmuQ0iVkOGZBcpJSmlLEsAczjNNUkj7HKdaY4j7voZPt3aetVq10jF4XLdFmqStetk5gyTBLKOfufQgScABP4h2a2ds5qI5e2WPgMHslNTelryk1NT8MtfS9Kvf7TyYfR-LcvfMyPb6_sm6QsZomcDvtSMP5yPXqayn78Cdhwg8o</recordid><startdate>201107</startdate><enddate>201107</enddate><creator>Li, Gang</creator><creator>Piper, David J.W.</creator><creator>Calvin Campbell, D.</creator><general>John Wiley & Sons, Ltd</general><scope>BSCLL</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7ST</scope><scope>7UA</scope><scope>C1K</scope><scope>F1W</scope><scope>H96</scope><scope>L.G</scope><scope>SOI</scope><scope>8FD</scope><scope>FR3</scope><scope>KR7</scope></search><sort><creationdate>201107</creationdate><title>The Quaternary Lancaster Sound trough-mouth fan, NW Baffin Bay</title><author>Li, Gang ; Piper, David J.W. ; Calvin Campbell, D.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a3929-f1fc94e0e42c9ba4a0bf27f65d6537d0c04d9b66b677c50183bbe4d31adeca883</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><topic>Aggradation</topic><topic>chronology</topic><topic>Deposition</topic><topic>glacigenic debris flow</topic><topic>Mouth</topic><topic>petrology</topic><topic>Pistons</topic><topic>sedimentology</topic><topic>Seismic engineering</topic><topic>Seismic phenomena</topic><topic>Sound</topic><topic>stacking patterns</topic><topic>trough-mouth fan</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Li, Gang</creatorcontrib><creatorcontrib>Piper, David J.W.</creatorcontrib><creatorcontrib>Calvin Campbell, D.</creatorcontrib><collection>Istex</collection><collection>CrossRef</collection><collection>Environment Abstracts</collection><collection>Water Resources Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Environment Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Civil Engineering Abstracts</collection><jtitle>Journal of quaternary science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Li, Gang</au><au>Piper, David J.W.</au><au>Calvin Campbell, D.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>The Quaternary Lancaster Sound trough-mouth fan, NW Baffin Bay</atitle><jtitle>Journal of quaternary science</jtitle><addtitle>J. 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issn | 0267-8179 1099-1417 1099-1417 |
language | eng |
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source | Wiley-Blackwell Read & Publish Collection |
subjects | Aggradation chronology Deposition glacigenic debris flow Mouth petrology Pistons sedimentology Seismic engineering Seismic phenomena Sound stacking patterns trough-mouth fan |
title | The Quaternary Lancaster Sound trough-mouth fan, NW Baffin Bay |
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