Massive deposition of Sahelian dust on the Canary Island Lanzarote during North Atlantic Heinrich Events
New IRSL ages of eolianites close to Muñique (Lanzarote) demonstrate the influence of millennial scale climatic variability on the sedimentary dynamics on the Canary Islands during the last glacial cycle. The repetitive succession of interstadial and stadial climatic conditions formed multiple seque...
Published in: | Quaternary Research |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2021
|
Subjects: | |
Online Access: | https://serval.unil.ch/notice/serval:BIB_BEE39F059193 https://doi.org/10.1017/qua.2020.100 https://serval.unil.ch/resource/serval:BIB_BEE39F059193.P001/REF.pdf http://nbn-resolving.org/urn/resolver.pl?urn=urn:nbn:ch:serval-BIB_BEE39F0591933 |
id |
ftunivlausanne:oai:serval.unil.ch:BIB_BEE39F059193 |
---|---|
record_format |
openpolar |
spelling |
ftunivlausanne:oai:serval.unil.ch:BIB_BEE39F059193 2024-02-11T10:01:24+01:00 Massive deposition of Sahelian dust on the Canary Island Lanzarote during North Atlantic Heinrich Events Heinrich, Hartmut Schmidt, Christoph Ziemen, Florian Mikolajewicz, Uwe Roettig, Christopher-Bastian 2021-01-19 application/pdf https://serval.unil.ch/notice/serval:BIB_BEE39F059193 https://doi.org/10.1017/qua.2020.100 https://serval.unil.ch/resource/serval:BIB_BEE39F059193.P001/REF.pdf http://nbn-resolving.org/urn/resolver.pl?urn=urn:nbn:ch:serval-BIB_BEE39F0591933 eng eng info:eu-repo/semantics/altIdentifier/doi/10.1017/qua.2020.100 info:eu-repo/semantics/altIdentifier/pissn/0033-5894 info:eu-repo/semantics/altIdentifier/pissn/1096-0287 info:eu-repo/semantics/altIdentifier/urn/urn:nbn:ch:serval-BIB_BEE39F0591933 https://serval.unil.ch/notice/serval:BIB_BEE39F059193 doi:10.1017/qua.2020.100 https://serval.unil.ch/resource/serval:BIB_BEE39F059193.P001/REF.pdf http://nbn-resolving.org/urn/resolver.pl?urn=urn:nbn:ch:serval-BIB_BEE39F0591933 info:eu-repo/semantics/openAccess All rights reserved https://serval.unil.ch/disclaimer Quaternary Research, vol. 101, pp. 51-66 Eolianites Millennial scale climatic variability IRSL-dating Earth system modelling info:eu-repo/semantics/article article info:eu-repo/semantics/acceptedVersion 2021 ftunivlausanne https://doi.org/10.1017/qua.2020.100 2024-01-22T01:00:13Z New IRSL ages of eolianites close to Muñique (Lanzarote) demonstrate the influence of millennial scale climatic variability on the sedimentary dynamics on the Canary Islands during the last glacial cycle. The repetitive succession of interstadial and stadial climatic conditions formed multiple sequences of eolian deposits, each in general comprising three depositional types. DepoType 1 and DepoType 2 consist mainly of marine biogenic carbonate detritus with small amounts of dust from the Sahara representing interstadial conditions. DepoType 2 compared to DepoType 1 is characterized by larger amounts of land snails and calcified brood cells. A DepoType 3 rich in dust from African subtropical/tropical Latisols terminates a sequence. IRSL dating on DepoType 3 type deposits clearly shows that these were deposited during Heinrich Events under stadial conditions. The stadial cooling of the North Atlantic Ocean caused a southern shift of climate zones that culminated during Heinrich Events when the arctic climate reaches its most southerly extent. As a consequence, atmospheric changes led to massive dust supply from the then-dry Sahel. The increase in dust and precipitation from the dry DepoTypes 1 to the more humid DepoTypes 3 originates from a modified atmospheric dynamic during a millennial cycle. Article in Journal/Newspaper Arctic North Atlantic Université de Lausanne (UNIL): Serval - Serveur académique lausannois Arctic Quaternary Research 101 51 66 |
institution |
Open Polar |
collection |
Université de Lausanne (UNIL): Serval - Serveur académique lausannois |
op_collection_id |
ftunivlausanne |
language |
English |
topic |
Eolianites Millennial scale climatic variability IRSL-dating Earth system modelling |
spellingShingle |
Eolianites Millennial scale climatic variability IRSL-dating Earth system modelling Heinrich, Hartmut Schmidt, Christoph Ziemen, Florian Mikolajewicz, Uwe Roettig, Christopher-Bastian Massive deposition of Sahelian dust on the Canary Island Lanzarote during North Atlantic Heinrich Events |
topic_facet |
Eolianites Millennial scale climatic variability IRSL-dating Earth system modelling |
description |
New IRSL ages of eolianites close to Muñique (Lanzarote) demonstrate the influence of millennial scale climatic variability on the sedimentary dynamics on the Canary Islands during the last glacial cycle. The repetitive succession of interstadial and stadial climatic conditions formed multiple sequences of eolian deposits, each in general comprising three depositional types. DepoType 1 and DepoType 2 consist mainly of marine biogenic carbonate detritus with small amounts of dust from the Sahara representing interstadial conditions. DepoType 2 compared to DepoType 1 is characterized by larger amounts of land snails and calcified brood cells. A DepoType 3 rich in dust from African subtropical/tropical Latisols terminates a sequence. IRSL dating on DepoType 3 type deposits clearly shows that these were deposited during Heinrich Events under stadial conditions. The stadial cooling of the North Atlantic Ocean caused a southern shift of climate zones that culminated during Heinrich Events when the arctic climate reaches its most southerly extent. As a consequence, atmospheric changes led to massive dust supply from the then-dry Sahel. The increase in dust and precipitation from the dry DepoTypes 1 to the more humid DepoTypes 3 originates from a modified atmospheric dynamic during a millennial cycle. |
format |
Article in Journal/Newspaper |
author |
Heinrich, Hartmut Schmidt, Christoph Ziemen, Florian Mikolajewicz, Uwe Roettig, Christopher-Bastian |
author_facet |
Heinrich, Hartmut Schmidt, Christoph Ziemen, Florian Mikolajewicz, Uwe Roettig, Christopher-Bastian |
author_sort |
Heinrich, Hartmut |
title |
Massive deposition of Sahelian dust on the Canary Island Lanzarote during North Atlantic Heinrich Events |
title_short |
Massive deposition of Sahelian dust on the Canary Island Lanzarote during North Atlantic Heinrich Events |
title_full |
Massive deposition of Sahelian dust on the Canary Island Lanzarote during North Atlantic Heinrich Events |
title_fullStr |
Massive deposition of Sahelian dust on the Canary Island Lanzarote during North Atlantic Heinrich Events |
title_full_unstemmed |
Massive deposition of Sahelian dust on the Canary Island Lanzarote during North Atlantic Heinrich Events |
title_sort |
massive deposition of sahelian dust on the canary island lanzarote during north atlantic heinrich events |
publishDate |
2021 |
url |
https://serval.unil.ch/notice/serval:BIB_BEE39F059193 https://doi.org/10.1017/qua.2020.100 https://serval.unil.ch/resource/serval:BIB_BEE39F059193.P001/REF.pdf http://nbn-resolving.org/urn/resolver.pl?urn=urn:nbn:ch:serval-BIB_BEE39F0591933 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic North Atlantic |
genre_facet |
Arctic North Atlantic |
op_source |
Quaternary Research, vol. 101, pp. 51-66 |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1017/qua.2020.100 info:eu-repo/semantics/altIdentifier/pissn/0033-5894 info:eu-repo/semantics/altIdentifier/pissn/1096-0287 info:eu-repo/semantics/altIdentifier/urn/urn:nbn:ch:serval-BIB_BEE39F0591933 https://serval.unil.ch/notice/serval:BIB_BEE39F059193 doi:10.1017/qua.2020.100 https://serval.unil.ch/resource/serval:BIB_BEE39F059193.P001/REF.pdf http://nbn-resolving.org/urn/resolver.pl?urn=urn:nbn:ch:serval-BIB_BEE39F0591933 |
op_rights |
info:eu-repo/semantics/openAccess All rights reserved https://serval.unil.ch/disclaimer |
op_doi |
https://doi.org/10.1017/qua.2020.100 |
container_title |
Quaternary Research |
container_volume |
101 |
container_start_page |
51 |
op_container_end_page |
66 |
_version_ |
1790597216381960192 |