The Heinrich and Dansgaard-Oeschger climatic events during Marine Isotopic Stage 3: Searching for appropriate times for human colonization of the Americas
Marine Isotope Stage 3 (MIS 3) was an interstadial stage, a relatively warm climatic period which developed roughly between 60 and 50 and 30 cal. ka BP. Several very cold periods, known as Heinrich (H) events, developed during MIS 3 as a result of partial collapse of the North American ice sheet mar...
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ftconicet:oai:ri.conicet.gov.ar:11336/26736 2023-10-09T21:52:26+02:00 The Heinrich and Dansgaard-Oeschger climatic events during Marine Isotopic Stage 3: Searching for appropriate times for human colonization of the Americas Rabassa, Jorge Oscar Ponce, Juan Federico application/pdf http://hdl.handle.net/11336/26736 eng eng Elsevier info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S1040618213002267 info:eu-repo/semantics/altIdentifier/doi/10.1016/j.quaint.2013.04.023 http://hdl.handle.net/11336/26736 Rabassa, Jorge Oscar; Ponce, Juan Federico; The Heinrich and Dansgaard-Oeschger climatic events during Marine Isotopic Stage 3: Searching for appropriate times for human colonization of the Americas; Elsevier; Quaternary International; 299; 4-2013; 94-105 1040-6182 info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-nd/2.5/ar/ Marine Isotope 3 Paleoclimatology Late Pleistocene Human Peopling Of the Americas https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion ftconicet https://doi.org/10.1016/j.quaint.2013.04.023 2023-09-24T18:44:55Z Marine Isotope Stage 3 (MIS 3) was an interstadial stage, a relatively warm climatic period which developed roughly between 60 and 50 and 30 cal. ka BP. Several very cold periods, known as Heinrich (H) events, developed during MIS 3 as a result of partial collapse of the North American ice sheet margins, with formation of huge amounts of icebergs which, after melting in more temperate latitudes, would have inundated the North Atlantic Ocean with low salinity waters which would have impeded the reach of the Gulf Stream into the North Atlantic Ocean. Several paleoclimatic moments with relatively warmer conditions, known as the Dansgaard-Oeschger (D-O) events, took place in between the Heinrich (H) events, throughout MIS 3. These H and D-O cycles would have been very short (perhaps even only around 1 ky each in some cases) and intense, with mean annual temperatures in the area of Beringia ca. 5–8 C° higher than those active at the Last Glacial Maximum (LGM; ca. 24 cal. ka B.P.) and perhaps close to those occurring in past interglacial periods, respectively. Even though climate was warmer, total melting of the continental ice sheets did not take place; thus, global sea level was perhaps still low enough to allow the persistence of the Beringia land bridge between Siberia and North America, without any interruptions throughout the entire MIS 3. The aims of this paper are to present paleoclimatic and paleogeographic information about MIS 3 and to discuss the most favorable chronology for human displacement through Beringia. At the times of MIS 3, there would have been no coalescence between the Laurentide and Cordilleran ice sheets; thus, both the hinterland path from Beringia southwards and the coastal route would have been open and enjoying moderate climate ecosystems, and thus available for humans. In this case, it is now possible to suggest possible moments for human penetration in North America, sometime between ca. 60–50 to 28 cal. ka B.P, during one or more D-O events (most likely sometime between the D-O 16 ... Article in Journal/Newspaper Ice Sheet North Atlantic Beringia Siberia CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) Quaternary International 299 94 105 |
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Open Polar |
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CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
op_collection_id |
ftconicet |
language |
English |
topic |
Marine Isotope 3 Paleoclimatology Late Pleistocene Human Peopling Of the Americas https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
spellingShingle |
Marine Isotope 3 Paleoclimatology Late Pleistocene Human Peopling Of the Americas https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 Rabassa, Jorge Oscar Ponce, Juan Federico The Heinrich and Dansgaard-Oeschger climatic events during Marine Isotopic Stage 3: Searching for appropriate times for human colonization of the Americas |
topic_facet |
Marine Isotope 3 Paleoclimatology Late Pleistocene Human Peopling Of the Americas https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
description |
Marine Isotope Stage 3 (MIS 3) was an interstadial stage, a relatively warm climatic period which developed roughly between 60 and 50 and 30 cal. ka BP. Several very cold periods, known as Heinrich (H) events, developed during MIS 3 as a result of partial collapse of the North American ice sheet margins, with formation of huge amounts of icebergs which, after melting in more temperate latitudes, would have inundated the North Atlantic Ocean with low salinity waters which would have impeded the reach of the Gulf Stream into the North Atlantic Ocean. Several paleoclimatic moments with relatively warmer conditions, known as the Dansgaard-Oeschger (D-O) events, took place in between the Heinrich (H) events, throughout MIS 3. These H and D-O cycles would have been very short (perhaps even only around 1 ky each in some cases) and intense, with mean annual temperatures in the area of Beringia ca. 5–8 C° higher than those active at the Last Glacial Maximum (LGM; ca. 24 cal. ka B.P.) and perhaps close to those occurring in past interglacial periods, respectively. Even though climate was warmer, total melting of the continental ice sheets did not take place; thus, global sea level was perhaps still low enough to allow the persistence of the Beringia land bridge between Siberia and North America, without any interruptions throughout the entire MIS 3. The aims of this paper are to present paleoclimatic and paleogeographic information about MIS 3 and to discuss the most favorable chronology for human displacement through Beringia. At the times of MIS 3, there would have been no coalescence between the Laurentide and Cordilleran ice sheets; thus, both the hinterland path from Beringia southwards and the coastal route would have been open and enjoying moderate climate ecosystems, and thus available for humans. In this case, it is now possible to suggest possible moments for human penetration in North America, sometime between ca. 60–50 to 28 cal. ka B.P, during one or more D-O events (most likely sometime between the D-O 16 ... |
format |
Article in Journal/Newspaper |
author |
Rabassa, Jorge Oscar Ponce, Juan Federico |
author_facet |
Rabassa, Jorge Oscar Ponce, Juan Federico |
author_sort |
Rabassa, Jorge Oscar |
title |
The Heinrich and Dansgaard-Oeschger climatic events during Marine Isotopic Stage 3: Searching for appropriate times for human colonization of the Americas |
title_short |
The Heinrich and Dansgaard-Oeschger climatic events during Marine Isotopic Stage 3: Searching for appropriate times for human colonization of the Americas |
title_full |
The Heinrich and Dansgaard-Oeschger climatic events during Marine Isotopic Stage 3: Searching for appropriate times for human colonization of the Americas |
title_fullStr |
The Heinrich and Dansgaard-Oeschger climatic events during Marine Isotopic Stage 3: Searching for appropriate times for human colonization of the Americas |
title_full_unstemmed |
The Heinrich and Dansgaard-Oeschger climatic events during Marine Isotopic Stage 3: Searching for appropriate times for human colonization of the Americas |
title_sort |
heinrich and dansgaard-oeschger climatic events during marine isotopic stage 3: searching for appropriate times for human colonization of the americas |
publisher |
Elsevier |
url |
http://hdl.handle.net/11336/26736 |
genre |
Ice Sheet North Atlantic Beringia Siberia |
genre_facet |
Ice Sheet North Atlantic Beringia Siberia |
op_relation |
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S1040618213002267 info:eu-repo/semantics/altIdentifier/doi/10.1016/j.quaint.2013.04.023 http://hdl.handle.net/11336/26736 Rabassa, Jorge Oscar; Ponce, Juan Federico; The Heinrich and Dansgaard-Oeschger climatic events during Marine Isotopic Stage 3: Searching for appropriate times for human colonization of the Americas; Elsevier; Quaternary International; 299; 4-2013; 94-105 1040-6182 |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-nd/2.5/ar/ |
op_doi |
https://doi.org/10.1016/j.quaint.2013.04.023 |
container_title |
Quaternary International |
container_volume |
299 |
container_start_page |
94 |
op_container_end_page |
105 |
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1779315606595567616 |