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Glacial–interglacial cycles in the south-central and southeastern Pyrenees since ~180 ka (NE Spain–Andorra–S France)

Turu, Valenti; Peña-Monné, Jose Luís; Cunha, Pedro P.; Jalut, Guy; Buylaert, Jan-Pieter; Murray, Andrew S.; Bridgland, David; Faurschou-Knudsen, Mads; Oliva, Marc; Carrasco, Rosa M.; Ros, Xavier; Turu-Font, Laia; Ventura Roca, Josep

Glacial–interglacial cycles in the south-central and southeastern Pyrenees since ~180 ka (NE Spain–Andorra–S France) Thumbnail


Authors

Valenti Turu

Jose Luís Peña-Monné

Pedro P. Cunha

Guy Jalut

Jan-Pieter Buylaert

Andrew S. Murray

Mads Faurschou-Knudsen

Marc Oliva

Rosa M. Carrasco

Xavier Ros

Laia Turu-Font

Josep Ventura Roca



Abstract

This study uses luminescence and 14C accelerator mass spectrometry procedures to date relevant glaciofluvial and glacial deposits from the south-central and southeastern Pyrenees (Andorra–France–Spain). We distinguish two types of end-moraine complexes: (1) those in which at least a far-flung moraine exists beyond a frequently nested end-moraine complex (the most common) and (2) those in which a closenested end moraine encompasses at least two glacial cycles. Both types formed within six distinctive glacial intervals: (1) A penultimate glacial cycle during Marine Oxygen Isotope Stage (MIS) 6 and older glaciofluvial terraces occurred beyond the range of the luminescence dating method. (2) An early glacial advance in MIS 5d (∼97 −15/+19 ka) was followed by glacial retreat during MIS 5c (< 91 ± 9 ka). (3) The last maximum ice extent (LMIE) was in early MIS 4 (∼74 ± 4.5 ka). (4) Unexpectedly, glaciers thinned during the second half of MIS 3 (∼39 −6/+11 ka). (5) During the MIS 3–2 transition, glaciers subsequently fluctuated behind the LMIE limits. (6) The global last glacial maximum (LGM) started as early as ∼26.6 ± 0.365 ka b2k, and the corresponding end moraines were built behind the LMIE limits or merged with it, forming close-nested moraines.

Citation

Turu, V., Peña-Monné, J. L., Cunha, P. P., Jalut, G., Buylaert, J., Murray, A. S., …Ventura Roca, J. (2023). Glacial–interglacial cycles in the south-central and southeastern Pyrenees since ~180 ka (NE Spain–Andorra–S France). Quaternary Research, 113, 1-28. https://doi.org/10.1017/qua.2022.68

Journal Article Type Article
Acceptance Date Nov 17, 2022
Online Publication Date Jan 26, 2022
Publication Date 2023-05
Deposit Date Mar 7, 2023
Publicly Available Date Apr 24, 2023
Journal Quaternary Research
Print ISSN 0033-5894
Electronic ISSN 1096-0287
Publisher Academic Press
Peer Reviewed Peer Reviewed
Volume 113
Pages 1-28
DOI https://doi.org/10.1017/qua.2022.68
Public URL https://durham-repository.worktribe.com/output/1178735

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