Geochemistry and sedimentology of IODP Hole 307-U1317E

The Plio-Pleistocene intensification of Northern Hemisphere continental ice-sheet development is known to have profoundly affected the global climate system. Evidence for early continental glaciation is preserved in sediments throughout the North Atlantic Ocean, where ice-rafted detritus (IRD) layer...

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Main Authors: Thierens, Mieke, Pirlet, Hans, Colin, C, Latruwe, Kris, Vanhaecke, Frank, Lee, J R, Stuut, Jan-Berend W, Titschack, Jürgen, Huvenne, Veerle A I, Dorschel, Boris, Wheeler, Andrew J, Henriet, Jean-Pierre
Format: Dataset
Language:English
Published: PANGAEA 2010
Subjects:
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.816027
https://doi.org/10.1594/PANGAEA.816027
id ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.816027
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spelling ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.816027 2023-05-15T16:40:45+02:00 Geochemistry and sedimentology of IODP Hole 307-U1317E Thierens, Mieke Pirlet, Hans Colin, C Latruwe, Kris Vanhaecke, Frank Lee, J R Stuut, Jan-Berend W Titschack, Jürgen Huvenne, Veerle A I Dorschel, Boris Wheeler, Andrew J Henriet, Jean-Pierre LATITUDE: 51.379983 * LONGITUDE: -11.717633 2010-06-25 application/zip, 2 datasets https://doi.pangaea.de/10.1594/PANGAEA.816027 https://doi.org/10.1594/PANGAEA.816027 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.816027 https://doi.org/10.1594/PANGAEA.816027 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Thierens, Mieke; Pirlet, Hans; Colin, C; Latruwe, Kris; Vanhaecke, Frank; Lee, J R; Stuut, Jan-Berend W; Titschack, Jürgen; Huvenne, Veerle A I; Dorschel, Boris; Wheeler, Andrew J; Henriet, Jean-Pierre (2012): Ice-rafting from the British–Irish ice sheet since the earliest Pleistocene (2.6 million years ago): implications for long-term mid-latitudinal ice-sheet growth in the North Atlantic region. Quaternary Science Reviews, 44, 229-240, https://doi.org/10.1016/j.quascirev.2010.12.020 307-U1317E DRILL Drilling/drill rig Exp307 Integrated Ocean Drilling Program / International Ocean Discovery Program IODP Joides Resolution Porcupine Basin Carbonate Mounds Dataset 2010 ftpangaea https://doi.org/10.1594/PANGAEA.816027 https://doi.org/10.1016/j.quascirev.2010.12.020 2023-01-20T07:33:03Z The Plio-Pleistocene intensification of Northern Hemisphere continental ice-sheet development is known to have profoundly affected the global climate system. Evidence for early continental glaciation is preserved in sediments throughout the North Atlantic Ocean, where ice-rafted detritus (IRD) layers attest to the calving of sediment-loaded icebergs from circum-Atlantic ice sheets. So far, Early-Pleistocene IRD deposition has been attributed to the presence of high-latitudinal ice sheets, whereas the existence and extent of ice accumulation in more temperate, mid-latitudinal regions remains enigmatic. Here we present results from the multiproxy provenance analysis of a unique, Pleistocene-Holocene IRD sequence from the Irish NE Atlantic continental margin. There, the Challenger coral carbonate mound (IODP Expedition 307 site U1317) preserved an Early-Pleistocene record of 16 distinctive IRD events, deposited between ca 2.6 and 1.7 Ma. Strong and complex IRD signals are also identified during the mid-Pleistocene climate transition (ca 1.2 to 0.65 Ma) and throughout the Middle-Late Pleistocene interval. Radiogenic isotope source-fingerprinting, in combination with coarse lithic component analysis, indicates a dominant sediment source in the nearby British-Irish Isles, even for the oldest, Early-Pleistocene IRD deposits. Hence, our findings demonstrate, for the first time, repeated and substantial (i.e. marine-terminating) ice accumulation on the British-Irish Isles since the beginning of the Pleistocene. Contemporaneous expansion of both high- and mid-latitudinal ice sheets in the North Atlantic region is therefore implied at the onset of the Pleistocene. Moreover, it suggests the recurrent establishment of (climatically) favourable conditions for ice sheet inception, growth and instability in mid-latitudinal regions, even in the earliest stages of Northern Hemisphere glacial expansion and in an obliquity-driven climate system. Dataset Ice Sheet North Atlantic PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-11.717633,-11.717633,51.379983,51.379983)
institution Open Polar
collection PANGAEA - Data Publisher for Earth & Environmental Science
op_collection_id ftpangaea
language English
topic 307-U1317E
DRILL
Drilling/drill rig
Exp307
Integrated Ocean Drilling Program / International Ocean Discovery Program
IODP
Joides Resolution
Porcupine Basin Carbonate Mounds
spellingShingle 307-U1317E
DRILL
Drilling/drill rig
Exp307
Integrated Ocean Drilling Program / International Ocean Discovery Program
IODP
Joides Resolution
Porcupine Basin Carbonate Mounds
Thierens, Mieke
Pirlet, Hans
Colin, C
Latruwe, Kris
Vanhaecke, Frank
Lee, J R
Stuut, Jan-Berend W
Titschack, Jürgen
Huvenne, Veerle A I
Dorschel, Boris
Wheeler, Andrew J
Henriet, Jean-Pierre
Geochemistry and sedimentology of IODP Hole 307-U1317E
topic_facet 307-U1317E
DRILL
Drilling/drill rig
Exp307
Integrated Ocean Drilling Program / International Ocean Discovery Program
IODP
Joides Resolution
Porcupine Basin Carbonate Mounds
description The Plio-Pleistocene intensification of Northern Hemisphere continental ice-sheet development is known to have profoundly affected the global climate system. Evidence for early continental glaciation is preserved in sediments throughout the North Atlantic Ocean, where ice-rafted detritus (IRD) layers attest to the calving of sediment-loaded icebergs from circum-Atlantic ice sheets. So far, Early-Pleistocene IRD deposition has been attributed to the presence of high-latitudinal ice sheets, whereas the existence and extent of ice accumulation in more temperate, mid-latitudinal regions remains enigmatic. Here we present results from the multiproxy provenance analysis of a unique, Pleistocene-Holocene IRD sequence from the Irish NE Atlantic continental margin. There, the Challenger coral carbonate mound (IODP Expedition 307 site U1317) preserved an Early-Pleistocene record of 16 distinctive IRD events, deposited between ca 2.6 and 1.7 Ma. Strong and complex IRD signals are also identified during the mid-Pleistocene climate transition (ca 1.2 to 0.65 Ma) and throughout the Middle-Late Pleistocene interval. Radiogenic isotope source-fingerprinting, in combination with coarse lithic component analysis, indicates a dominant sediment source in the nearby British-Irish Isles, even for the oldest, Early-Pleistocene IRD deposits. Hence, our findings demonstrate, for the first time, repeated and substantial (i.e. marine-terminating) ice accumulation on the British-Irish Isles since the beginning of the Pleistocene. Contemporaneous expansion of both high- and mid-latitudinal ice sheets in the North Atlantic region is therefore implied at the onset of the Pleistocene. Moreover, it suggests the recurrent establishment of (climatically) favourable conditions for ice sheet inception, growth and instability in mid-latitudinal regions, even in the earliest stages of Northern Hemisphere glacial expansion and in an obliquity-driven climate system.
format Dataset
author Thierens, Mieke
Pirlet, Hans
Colin, C
Latruwe, Kris
Vanhaecke, Frank
Lee, J R
Stuut, Jan-Berend W
Titschack, Jürgen
Huvenne, Veerle A I
Dorschel, Boris
Wheeler, Andrew J
Henriet, Jean-Pierre
author_facet Thierens, Mieke
Pirlet, Hans
Colin, C
Latruwe, Kris
Vanhaecke, Frank
Lee, J R
Stuut, Jan-Berend W
Titschack, Jürgen
Huvenne, Veerle A I
Dorschel, Boris
Wheeler, Andrew J
Henriet, Jean-Pierre
author_sort Thierens, Mieke
title Geochemistry and sedimentology of IODP Hole 307-U1317E
title_short Geochemistry and sedimentology of IODP Hole 307-U1317E
title_full Geochemistry and sedimentology of IODP Hole 307-U1317E
title_fullStr Geochemistry and sedimentology of IODP Hole 307-U1317E
title_full_unstemmed Geochemistry and sedimentology of IODP Hole 307-U1317E
title_sort geochemistry and sedimentology of iodp hole 307-u1317e
publisher PANGAEA
publishDate 2010
url https://doi.pangaea.de/10.1594/PANGAEA.816027
https://doi.org/10.1594/PANGAEA.816027
op_coverage LATITUDE: 51.379983 * LONGITUDE: -11.717633
long_lat ENVELOPE(-11.717633,-11.717633,51.379983,51.379983)
genre Ice Sheet
North Atlantic
genre_facet Ice Sheet
North Atlantic
op_source Supplement to: Thierens, Mieke; Pirlet, Hans; Colin, C; Latruwe, Kris; Vanhaecke, Frank; Lee, J R; Stuut, Jan-Berend W; Titschack, Jürgen; Huvenne, Veerle A I; Dorschel, Boris; Wheeler, Andrew J; Henriet, Jean-Pierre (2012): Ice-rafting from the British–Irish ice sheet since the earliest Pleistocene (2.6 million years ago): implications for long-term mid-latitudinal ice-sheet growth in the North Atlantic region. Quaternary Science Reviews, 44, 229-240, https://doi.org/10.1016/j.quascirev.2010.12.020
op_relation https://doi.pangaea.de/10.1594/PANGAEA.816027
https://doi.org/10.1594/PANGAEA.816027
op_rights CC-BY-3.0: Creative Commons Attribution 3.0 Unported
Access constraints: unrestricted
info:eu-repo/semantics/openAccess
op_rightsnorm CC-BY
op_doi https://doi.org/10.1594/PANGAEA.816027
https://doi.org/10.1016/j.quascirev.2010.12.020
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