TY  - JOUR
A1  - Margold, Martin
A1  - Jansen, John D.
A1  - Gurinov, Artem L.
A1  - Codilean, Alexandru T.
A1  - Fink, David
A1  - Preusser, Frank
A1  - Reznichenko, Natalya V.
A1  - Mifsud, Charles
T1  - Extensive glaciation in Transbaikalia, Siberia, at the Last Glacial Maximum
JF  - Quaternary science reviews : the international multidisciplinary research and review journal
N2  - Successively smaller glacial extents have been proposed for continental Eurasia during the stadials of the last glacial period leading up to the Last Glacial Maximum (LGM). At the same time the large mountainous region east of Lake Baikal, Transbaikalia, has remained unexplored in terms of glacial chronology despite clear geomorphological evidence of substantial past glaciations. We have applied cosmogenic Be-10 exposure dating and optically stimulated luminescence to establish the first quantitative glacial chronology for this region. Based on eighteen exposure ages from five moraine complexes, we propose that large mountain ice fields existed in the Kodar and Udokan mountains during Oxygen Isotope Stage 2, commensurate with the global LGM. These ice fields fed valley glaciers (>100 km in length) reaching down to the Chara Depression between the Kodar and Udokan mountains and to the valley of the Vitim River northwest of the Kodar Mountains. Two of the investigated moraines date to the Late Glacial, but indications of incomplete exposure among some of the sampled boulders obscure the specific details of the post-LGM glacial history. In addition to the LGM ice fields in the highest mountains of Transbaikalia, we report geomorphological evidence of a much more extensive, ice-cap type glaciation at a time that is yet to be firmly resolved. (C) 2015 Elsevier Ltd. All rights reserved.
KW  - Glaciation
KW  - Transbaikalia
KW  - Last Glacial Maximum
KW  - Cosmogenic Be-10 exposure dating
KW  - Optically stimulated luminescence
Y1  - 2016
U6  - https://doi.org/10.1016/j.quascirev.2015.11.018
SN  - 0277-3791
VL  - 132
SP  - 161
EP  - 174
PB  - Elsevier
CY  - Oxford
ER  - 
TY  - JOUR
A1  - Dey, Saptarshi
A1  - Thiede, Rasmus Christoph
A1  - Schildgen, Taylor F.
A1  - Wittmann, Hella
A1  - Bookhagen, Bodo
A1  - Scherler, Dirk
A1  - Jain, Vikrant
A1  - Strecker, Manfred
T1  - Climate-driven sediment aggradation and incision since the late Pleistocene in the NW Himalaya, India
JF  - Earth & planetary science letters
N2  - Deciphering the response of sediment routing systems to climatic forcing is fundamental for understanding the impacts of climate change on landscape evolution. In the Kangra Basin (northwest Sub-Himalaya, India), upper Pleistocene to Holocene alluvial fills and fluvial terraces record periodic fluctuations of sediment supply and transport capacity on timescales of 10(3) to 10(5) yr. To evaluate the potential influence of climate change on these fluctuations, we compare the timing of aggradation and incision phases recorded within remnant alluvial fans and terraces with climate archives. New surface-exposure dating of six terrace levels with in-situ cosmogenic Be-10 indicates the onset of incision phases. Two terrace surfaces from the highest level (T1) sculpted into the oldest preserved alluvial fan (AF1) date back to 53.4 +/- 3.2 ka and 43.0 +/- 2.7 ka (1 sigma). T2 surfaces sculpted into the remnants of AF1 have exposure ages of 18.6 +/- 1.2 ka and 15.3 +/- 0.9 ka, while terraces sculpted into the upper Pleistocene-Holocene fan (AF2) provide ages of 9.3 +/- 0.4 ka (T3), 7.1 +/- 0.4 ka (T4), 5.2 +/- 0.4 ka (T5) and 3.6 +/- 0.2 ka (T6). Together with previously published OSL ages yielding the timing of aggradation, we find a correlation between variations in sediment transport with oxygen-isotope records from regions affected by the Indian Summer Monsoon. During periods of increased monsoon intensity and post-Last Glacial Maximum glacial retreat, aggradation occurred in the Kangra Basin, likely due to high sediment flux, whereas periods of weakened monsoon intensity or lower sediment supply coincide with incision. (C) 2016 Elsevier B.V. All rights reserved.
KW  - alluvial-fan sedimentation
KW  - terrestrial cosmogenic nuclides
KW  - Indian Summer Monsoon
KW  - Last Glacial Maximum
KW  - paleo-erosion rate
Y1  - 2016
U6  - https://doi.org/10.1016/j.epsl.2016.05.050
SN  - 0012-821X
SN  - 1385-013X
VL  - 449
SP  - 321
EP  - 331
PB  - Elsevier
CY  - Amsterdam
ER  -