Identification of the last glacial maximum in the Upper Paleolithic of Portugal using magnetic susceptibility measurements of Caldeirão Cave sediments
Identifieur interne : 000181 ( Maroc/Analysis ); précédent : 000180; suivant : 000182Identification of the last glacial maximum in the Upper Paleolithic of Portugal using magnetic susceptibility measurements of Caldeirão Cave sediments
Auteurs : Brooks B. Ellwood [États-Unis] ; João Zilhão [Portugal] ; Francis B. Harrold [États-Unis] ; William Balsam [États-Unis] ; Burke Burkart [États-Unis] ; Gary J. Long [États-Unis] ; André Debénath [France] ; Abdeljalil Bouzouggar [Maroc]Source :
- Geoarchaeology [ 0883-6353 ] ; 1998-01.
Abstract
We have sampled Upper and Middle Paleolithic sediments in Caldeirão Cave, Portugal, for paleoclimatic analysis. This work involved measuring magnetic susceptibility (MS) on continuous vertical profiles of a series of ∼8 cc sediment samples, and using the MS data as a paleoclimate proxy. Previous work has shown that caves can be ideal recorders of paleoclimatic variations because they are protected environments. Pedogenesis outside the cave during time of cool climate produces sediments with low MS magnitudes, while warmer climates yield higher MS magnitudes. Eroded soils collect in caves in sediment sequences where futher pedogenesis and biological disturbance is minimal. Continuously sampled profiles of those sediments found in an archaeological context then allow paleoclimatic estimates for all archaeological levels. Results of our work here include identification of the last glacial maximum, at ca. 24,000–22,000 B.P. (calibrated), defined by very low MS values found in basal Solutrean levels in the cave. Distinctive ca. 2500 year Neo‐glacial cycles, defined by the MS data within the Early Upper Paleolithic and Solutrean, are consistent with published 14C duration estimates for the Upper Paleolithic in Caldeirão Cave. © 1998 John Wiley & Sons, Inc.
Url:
DOI: 10.1002/(SICI)1520-6548(199801)13:1<55::AID-GEA4>3.0.CO;2-7
Affiliations:
- France, Maroc, Portugal, États-Unis
- Languedoc-Roussillon, Missouri (État), Occitanie (région administrative), Rabat-Salé-Kénitra, Texas
- Rabat, Tautavel
Links toward previous steps (curation, corpus...)
- to stream Istex, to step Corpus: 001043
- to stream Istex, to step Curation: 000B78
- to stream Istex, to step Checkpoint: 000749
- to stream Main, to step Merge: 000F05
- to stream Main, to step Curation: 000E72
- to stream Main, to step Exploration: 000E72
- to stream Maroc, to step Extraction: 000181
Links to Exploration step
ISTEX:192B4D6DA81D3F61B49F671A139BD1BFFC62F796Le document en format XML
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Ellwood</name></region><name sortKey="Balsam, William" sort="Balsam, William" uniqKey="Balsam W" first="William" last="Balsam">William Balsam</name><name sortKey="Burkart, Burke" sort="Burkart, Burke" uniqKey="Burkart B" first="Burke" last="Burkart">Burke Burkart</name><name sortKey="Harrold, Francis B" sort="Harrold, Francis B" uniqKey="Harrold F" first="Francis B." last="Harrold">Francis B. Harrold</name><name sortKey="Long, Gary J" sort="Long, Gary J" uniqKey="Long G" first="Gary J." last="Long">Gary J. Long</name></country><country name="Portugal"><noRegion><name sortKey="Zilhao, Joao" sort="Zilhao, Joao" uniqKey="Zilhao J" first="João" last="Zilhão">João Zilhão</name></noRegion></country><country name="France"><region name="Occitanie (région administrative)"><name sortKey="Debenath, Andre" sort="Debenath, Andre" uniqKey="Debenath A" first="André" last="Debénath">André Debénath</name></region></country><country name="Maroc"><region name="Rabat-Salé-Kénitra"><name sortKey="Bouzouggar, Abdeljalil" sort="Bouzouggar, Abdeljalil" uniqKey="Bouzouggar A" first="Abdeljalil" last="Bouzouggar">Abdeljalil Bouzouggar</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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