FN Archimer Export Format
PT J
TI New cosmogenic nuclide constraints on Late Glacial and Holocene glacier fluctuations in the sub-Antarctic Indian Ocean (Kerguelen Islands, 49°S)
BT 
AF Charton, Joanna
   Schimmelpfennig, Irene
   Jomelli, Vincent
   Delpech, Guillaume
   Blard, Pierre-Henri
   Braucher, Régis
   Verfaillie, Deborah
   Favier, Vincent
   Rinterknecht, Vincent
   Goosse, Hugues
   Crosta, Xavier
   Chassiot, Léo
   Martin, Léo
   Guillaume, Damien
   Legentil, Claude
AS 1:1;2:1;3:1;4:2;5:3;6:1;7:1,4;8:5;9:1;10:4;11:6;12:7;13:8;14:9;15:10;16:11;
FF 1:;2:;3:;4:;5:;6:;7:;8:;9:;10:;11:;12:;13:;14:;15:;16:;
C1 Aix Marseille Univ, CNRS, IRD, INRAE, CEREGE, Aix-en-Provence, France
   Université Paris-Saclay, CNRS, GEOPS, France
   Université de Lorraine, CNRS, CRPG, France
   Earth and Life Institute, Université catholique de Louvain, Louvain-la-Neuve, Belgium
   Institut des Géosciences de l’Environnement, Université Grenoble Alpes, CNRS, Grenoble, France
   UMR CNRS 5805 EPOC, Université de Bordeaux, France
   Université Laval, Département de Géographie, Québec, Canada
   Faculty of Geosciences, Utrecht University, Utrecht, the Netherlands
   Univ Lyon, UJM-Saint-Etienne, UCBL, ENSL, CNRS, LGL-TPE UMR5276, France
   Université Paris 1 Panthéon-Sorbonne, CNRS Laboratoire de Géographie Physique, France
   Aix Marseille Univ, CNRS, IRD, INRAE, CEREGE, Aix-en-Provence, France
C2 UNIV AIX MARSEILLE, FRANCE
   UNIV PARIS-SACLAY, FRANCE
   UNIV LORRAINE, FRANCE
   UNIV CATHOLIC LOUVAIN, BELGIUM
   UNIV GRENOBLE ALPES, FRANCE
   UNIV BORDEAUX, FRANCE
   UNIV LAVAL, CANADA
   UNIV UTRECHT, NETHERLANDS
   UNIV LYON, FRANCE
   UNIV SORBONNE, FRANCE
   UNIV AIX MARSEILLE, FRANCE
IF 4
TC 5
UR https://archimer.ifremer.fr/doc/00762/87397/99922.pdf
LA English
DT Article
DE ;Glacier fluctuations;Paleoclimate;Cl-36 CRE dating;Be-10 CRE dating;Late glacial;Antarctic cold reversal;Holocene;Southern mid-latitudes;Sub-Antarctic;Kerguelen islands
AB Cosmogenic nuclide dating of glacial landforms on the Kerguelen Archipelago (49°S, 69°E) gives the opportunity to study multi-millennial glacier fluctuations within the sub-Antarctic sector of the Indian Ocean. We here dated such geomorphic features to provide time constraints over the last 17,000 years using in situ-produced 36Cl in three glacial valleys: Val Travers valley, Ampere Glacier valley and Arago Glacier valley. For the first time, a combination of in situ-produced 36Cl and 10Be dating and 26Al/10Be ratios analysis was performed in the quartz-bearing syenite boulders of the Arago Glacier site. In addition, a Bayesian approach was computed to obtain a better constraint on moraine dating. Glacial advances occurred during the Late Glacial at 16.0 ± 1.9 ka and at 12.9 ± 1.7 ka in Val Travers, and at 13.6 ± 1.8 ka in Arago Glacier valley, probably linked to the Heinrich Stadial 1 and/or Antarctic Cold Reversal events, respectively. This suggests that all glaciers at this latitude were broadly sensitive to the large-scale climatic signal of the Antarctic Cold Reversal. So far, no Early nor Mid-Holocene moraines have been found in the glacial valleys on Kerguelen, indicating that the glaciers had probably receded significantly during these periods. This is in agreement with previously determined 14C ages from peat bogs, which suggest extensive deglaciation during several millennia of the Holocene period. Samples from glacially-polished bedrock surfaces (ranging from ∼4.4 ka to ∼14 ka) at Ampere Glacier site also suggest that this valley was ice free for several millennia during the Holocene. Finally, glaciers seem to have re-advanced only during the Late Holocene, especially within the last millennium, at ∼1 ka, ∼ 430 yr and ∼300 yr. A comparison of this new dataset with the available 10Be ages from other southern mid-latitude regions during the Holocene allows the identification of three different glacier evolution patterns. We suspect that variations of Kerguelen glaciers, which are located in the Southern Indian Ocean, were controlled by the combined effects of sea surface temperature related to the variations of the Antarctic Polar Front and fluctuations of precipitation related to long-term variations of the Southern Annular Mode. 
PY 2022
PD MAY
SO Quaternary Science Reviews
SN 0277-3791
PU Elsevier BV
VL 283
UT 000796231900002
DI 10.1016/j.quascirev.2022.107461
ID 87397
ER

EF