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

TY - JOUR

T1 - Glacial-interglacial cycles in the south-central and southeastern Pyrenees since ~180 ka (NE Spain-Andorra-S France)

AU - Turu, Valenti

AU - Peña-Monné, Jose Luís

AU - Cunha, Pedro P.

AU - Jalut, Guy

AU - Buylaert, Jan Pieter

AU - Murray, Andrew S.

AU - Bridgland, David

AU - Faurschou-Knudsen, Mads

AU - Oliva, Marc

AU - Carrasco, Rosa M.

AU - Ros, Xavier

AU - Turu-Font, Laia

AU - Ventura Roca, Josep

N1 - Publisher Copyright: Copyright © University of Washington. Published by Cambridge University Press, 2023.

PY - 2023/5

Y1 - 2023/5

N2 - 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.

AB - 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.

KW - End moraines

KW - Last glacial cycle

KW - Luminescence dating methods

KW - Penultimate glacial cycle

KW - SW Europe

UR - http://www.scopus.com/inward/record.url?scp=85159266246&partnerID=8YFLogxK

U2 - 10.1017/qua.2022.68

DO - 10.1017/qua.2022.68

M3 - Journal article

AN - SCOPUS:85159266246

SN - 0033-5894

VL - 113

SP - 1

EP - 28

JO - Quaternary Research (United States)

JF - Quaternary Research (United States)

ER -