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

Turu, V. ; Peña-Monné, J. L. (Universidad de Zaragoza) ; Cunha, P. P. ; Jalut, G. ; Buylaert, J. P. ; Murray, A. S. ; Bridgland, D. ; Faurschou-Knudsen, M. ; Oliva, M. ; Carrasco, R. M. ; Ros, X. ; Turu-Font, L. ; Ventura Roca, J.

Resumen: 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 close-nested 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.

Idioma: Inglés

DOI: 10.1017/qua.2022.68

Año: 2023

Publicado en: Quaternary Research (United States) 113 (2023), [28 pp.]
ISSN: 0033-5894

Factor impacto JCR: 1.7 (2023)

Categ. JCR: GEOGRAPHY, PHYSICAL rank: 38 / 65 = 0.585 (2023) - Q3 - T2
Categ. JCR: GEOSCIENCES, MULTIDISCIPLINARY rank: 155 / 254 = 0.61 (2023) - Q3 - T2

Factor impacto CITESCORE: 4.7 - Earth and Planetary Sciences (all) (Q2) - Arts and Humanities (miscellaneous) (Q1) - Earth-Surface Processes (Q2)

Factor impacto SCIMAGO: 0.787 - Arts and Humanities (miscellaneous) (Q1) - Earth-Surface Processes (Q1) - Earth and Planetary Sciences (miscellaneous) (Q1)

Financiación: info:eu-repo/grantAgreement/ES/AEI/PID2020-117685GB-I00
Financiación: info:eu-repo/grantAgreement/ES/DGA/H14-23R

Tipo y forma: Article (Published version)

Área (Departamento): Área Geografía Física (Dpto. Geograf. Ordenac.Territ.)