CaCO3, foraminifer fragmentation, benthic carbon isotopes, coarse lithic counts and radiogenic isotopes (Sr, Nd, Pb) of the Pliocene and earliest Pleistocene terrigenous component (3.3-2.4 Ma) of IODP Site 306-U1313
We present Plio-Pleistocene records of sediment color, %CaCO3, foraminifer fragmentation, benthic carbon isotopes (d13C) and radiogenic isotopes (Sr, Nd, Pb) of the terrigenous component from IODP Site U1313, a reoccupation of benchmark subtropical North Atlantic Ocean DSDP Site 607. We show that (i...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.829428 2024-09-15T18:12:36+00:00 CaCO3, foraminifer fragmentation, benthic carbon isotopes, coarse lithic counts and radiogenic isotopes (Sr, Nd, Pb) of the Pliocene and earliest Pleistocene terrigenous component (3.3-2.4 Ma) of IODP Site 306-U1313 Lang, David C Bailey, Ian Wilson, Paul A Beer, Christopher J Bolton, Clara T Friedrich, Oliver Newsam, Cherry Spencer, Megan R Gutjahr, Marcus Foster, Gavin L Cooper, Matthew J Milton, J Andy LATITUDE: 41.000000 * LONGITUDE: -32.957300 * DATE/TIME START: 2004-03-28T00:00:00 * DATE/TIME END: 2004-04-02T00:00:00 2014 application/zip, 6 datasets https://doi.pangaea.de/10.1594/PANGAEA.829428 https://doi.org/10.1594/PANGAEA.829428 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.829428 https://doi.org/10.1594/PANGAEA.829428 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Lang, David C; Bailey, Ian; Wilson, Paul A; Beer, Christopher J; Bolton, Clara T; Friedrich, Oliver; Newsam, Cherry; Spencer, Megan R; Gutjahr, Marcus; Foster, Gavin L; Cooper, Matthew J; Milton, J Andy (2014): The transition on North America from the warm humid Pliocene to the glaciated Quaternary traced by eolian dust deposition at a benchmark North Atlantic Ocean drill site. Quaternary Science Reviews, 93, 125-141, https://doi.org/10.1016/j.quascirev.2014.04.005 306-U1313 COMPCORE Composite Core Exp306 Integrated Ocean Drilling Program / International Ocean Discovery Program IODP Joides Resolution North Atlantic Climate 2 dataset publication series 2014 ftpangaea https://doi.org/10.1594/PANGAEA.82942810.1016/j.quascirev.2014.04.005 2024-07-24T02:31:21Z We present Plio-Pleistocene records of sediment color, %CaCO3, foraminifer fragmentation, benthic carbon isotopes (d13C) and radiogenic isotopes (Sr, Nd, Pb) of the terrigenous component from IODP Site U1313, a reoccupation of benchmark subtropical North Atlantic Ocean DSDP Site 607. We show that (inter)glacial cycles in sediment color and %CaCO3 pre-date major northern hemisphere glaciation and are unambiguously and consistently correlated to benthic oxygen isotopes back to 3.3 million years ago (Ma) and intermittently so probably back to the Miocene/Pliocene boundary. We show these lithological cycles to be driven by enhanced glacial fluxes of terrigenous material (eolian dust), not carbonate dissolution (the classic interpretation). Our radiogenic isotope data indicate a North American source for this dust (~3.3-2.4 Ma) in keeping with the interpreted source of terrestrial plant wax-derived biomarkers deposited at Site U1313. Yet our data indicate a mid latitude provenance regardless of (inter)glacial state, a finding that is inconsistent with the biomarker-inferred importance of glaciogenic mechanisms of dust production and transport. Moreover, we find that the relation between the biomarker and lithogenic components of dust accumulation is distinctly non-linear. Both records show a jump in glacial rates of accumulation from Marine Isotope Stage, MIS, G6 (2.72 Ma) onwards but the amplitude of this signal is about 3-8 times greater for biomarkers than for dust and particularly extreme during MIS 100 (2.52 Ma). We conclude that North America shifted abruptly to a distinctly more arid glacial regime from MIS G6, but major shifts in glacial North American vegetation biomes and regional wind fields (exacerbated by the growth of a large Laurentide Ice Sheet during MIS 100) likely explain amplification of this signal in the biomarker records. Our findings are consistent with wetter-than-modern reconstructions of North American continental climate under the warm high CO2 conditions of the Early Pliocene but contrast ... Other/Unknown Material Ice Sheet North Atlantic PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-32.957300,-32.957300,41.000000,41.000000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
306-U1313 COMPCORE Composite Core Exp306 Integrated Ocean Drilling Program / International Ocean Discovery Program IODP Joides Resolution North Atlantic Climate 2 |
spellingShingle |
306-U1313 COMPCORE Composite Core Exp306 Integrated Ocean Drilling Program / International Ocean Discovery Program IODP Joides Resolution North Atlantic Climate 2 Lang, David C Bailey, Ian Wilson, Paul A Beer, Christopher J Bolton, Clara T Friedrich, Oliver Newsam, Cherry Spencer, Megan R Gutjahr, Marcus Foster, Gavin L Cooper, Matthew J Milton, J Andy CaCO3, foraminifer fragmentation, benthic carbon isotopes, coarse lithic counts and radiogenic isotopes (Sr, Nd, Pb) of the Pliocene and earliest Pleistocene terrigenous component (3.3-2.4 Ma) of IODP Site 306-U1313 |
topic_facet |
306-U1313 COMPCORE Composite Core Exp306 Integrated Ocean Drilling Program / International Ocean Discovery Program IODP Joides Resolution North Atlantic Climate 2 |
description |
We present Plio-Pleistocene records of sediment color, %CaCO3, foraminifer fragmentation, benthic carbon isotopes (d13C) and radiogenic isotopes (Sr, Nd, Pb) of the terrigenous component from IODP Site U1313, a reoccupation of benchmark subtropical North Atlantic Ocean DSDP Site 607. We show that (inter)glacial cycles in sediment color and %CaCO3 pre-date major northern hemisphere glaciation and are unambiguously and consistently correlated to benthic oxygen isotopes back to 3.3 million years ago (Ma) and intermittently so probably back to the Miocene/Pliocene boundary. We show these lithological cycles to be driven by enhanced glacial fluxes of terrigenous material (eolian dust), not carbonate dissolution (the classic interpretation). Our radiogenic isotope data indicate a North American source for this dust (~3.3-2.4 Ma) in keeping with the interpreted source of terrestrial plant wax-derived biomarkers deposited at Site U1313. Yet our data indicate a mid latitude provenance regardless of (inter)glacial state, a finding that is inconsistent with the biomarker-inferred importance of glaciogenic mechanisms of dust production and transport. Moreover, we find that the relation between the biomarker and lithogenic components of dust accumulation is distinctly non-linear. Both records show a jump in glacial rates of accumulation from Marine Isotope Stage, MIS, G6 (2.72 Ma) onwards but the amplitude of this signal is about 3-8 times greater for biomarkers than for dust and particularly extreme during MIS 100 (2.52 Ma). We conclude that North America shifted abruptly to a distinctly more arid glacial regime from MIS G6, but major shifts in glacial North American vegetation biomes and regional wind fields (exacerbated by the growth of a large Laurentide Ice Sheet during MIS 100) likely explain amplification of this signal in the biomarker records. Our findings are consistent with wetter-than-modern reconstructions of North American continental climate under the warm high CO2 conditions of the Early Pliocene but contrast ... |
format |
Other/Unknown Material |
author |
Lang, David C Bailey, Ian Wilson, Paul A Beer, Christopher J Bolton, Clara T Friedrich, Oliver Newsam, Cherry Spencer, Megan R Gutjahr, Marcus Foster, Gavin L Cooper, Matthew J Milton, J Andy |
author_facet |
Lang, David C Bailey, Ian Wilson, Paul A Beer, Christopher J Bolton, Clara T Friedrich, Oliver Newsam, Cherry Spencer, Megan R Gutjahr, Marcus Foster, Gavin L Cooper, Matthew J Milton, J Andy |
author_sort |
Lang, David C |
title |
CaCO3, foraminifer fragmentation, benthic carbon isotopes, coarse lithic counts and radiogenic isotopes (Sr, Nd, Pb) of the Pliocene and earliest Pleistocene terrigenous component (3.3-2.4 Ma) of IODP Site 306-U1313 |
title_short |
CaCO3, foraminifer fragmentation, benthic carbon isotopes, coarse lithic counts and radiogenic isotopes (Sr, Nd, Pb) of the Pliocene and earliest Pleistocene terrigenous component (3.3-2.4 Ma) of IODP Site 306-U1313 |
title_full |
CaCO3, foraminifer fragmentation, benthic carbon isotopes, coarse lithic counts and radiogenic isotopes (Sr, Nd, Pb) of the Pliocene and earliest Pleistocene terrigenous component (3.3-2.4 Ma) of IODP Site 306-U1313 |
title_fullStr |
CaCO3, foraminifer fragmentation, benthic carbon isotopes, coarse lithic counts and radiogenic isotopes (Sr, Nd, Pb) of the Pliocene and earliest Pleistocene terrigenous component (3.3-2.4 Ma) of IODP Site 306-U1313 |
title_full_unstemmed |
CaCO3, foraminifer fragmentation, benthic carbon isotopes, coarse lithic counts and radiogenic isotopes (Sr, Nd, Pb) of the Pliocene and earliest Pleistocene terrigenous component (3.3-2.4 Ma) of IODP Site 306-U1313 |
title_sort |
caco3, foraminifer fragmentation, benthic carbon isotopes, coarse lithic counts and radiogenic isotopes (sr, nd, pb) of the pliocene and earliest pleistocene terrigenous component (3.3-2.4 ma) of iodp site 306-u1313 |
publisher |
PANGAEA |
publishDate |
2014 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.829428 https://doi.org/10.1594/PANGAEA.829428 |
op_coverage |
LATITUDE: 41.000000 * LONGITUDE: -32.957300 * DATE/TIME START: 2004-03-28T00:00:00 * DATE/TIME END: 2004-04-02T00:00:00 |
long_lat |
ENVELOPE(-32.957300,-32.957300,41.000000,41.000000) |
genre |
Ice Sheet North Atlantic |
genre_facet |
Ice Sheet North Atlantic |
op_source |
Supplement to: Lang, David C; Bailey, Ian; Wilson, Paul A; Beer, Christopher J; Bolton, Clara T; Friedrich, Oliver; Newsam, Cherry; Spencer, Megan R; Gutjahr, Marcus; Foster, Gavin L; Cooper, Matthew J; Milton, J Andy (2014): The transition on North America from the warm humid Pliocene to the glaciated Quaternary traced by eolian dust deposition at a benchmark North Atlantic Ocean drill site. Quaternary Science Reviews, 93, 125-141, https://doi.org/10.1016/j.quascirev.2014.04.005 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.829428 https://doi.org/10.1594/PANGAEA.829428 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.82942810.1016/j.quascirev.2014.04.005 |
_version_ |
1810450187374559232 |