Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Timing and dynamics of glaciation in the Ikh Turgen Mountains, Altai region, High Asia
Stockholm University, Faculty of Science, Department of Physical Geography.
Stockholm University, Faculty of Science, Department of Physical Geography.
Stockholm University, Faculty of Science, Department of Physical Geography. Purdue University, USA.
Stockholm University, Faculty of Science, Department of Physical Geography. University of Bern, Switzerland.
Show others and affiliations
Number of Authors: 162018 (English)In: Quaternary Geochronology, ISSN 1871-1014, E-ISSN 1878-0350, Vol. 47, p. 54-71Article in journal (Refereed) Published
Abstract [en]

Spanning the northern sector of High Asia, the Altai region contains a rich landform record of glaciation. We report the extent, chronologies, and dynamics of two paleoglaciers on opposite flanks of the Ikh Turgen mountains (In Russian: Chikhacheva Range), straddling the border between Russia and Mongolia, using a combination of remote sensing-based glacial geomorphological mapping, Be-10 surface exposure dating, and geomorphometric analysis. On the eastern side (Mongolia), the Turgen-Asgat paleoglacier, with its potential for developing a large accumulation area (similar to 257 km(2)), expanded 40 km down valley, and mean ages from a latero-frontal moraine indicate deglaciation during marine oxygen isotope stage (MIS) 3 (45.1 +/- 1.8 ka, n = 4) and MIS 2 (22.8 +/- 3.3 ka, n = 5). These minimum age constraints are consistent with other Be-10 glacial chronologies and paleoclimate records from the region, which indicates glacier culmination during cold and wet conditions coinciding with MIS 3 (piedmont-style glaciation; inferred for a few sites across the region) and glacier culmination during cold and dry conditions coinciding with MIS 2 (mainly valley-style glaciation; inferred from several sites across the region). On the western side (Russia), the Boguty paleoglacier had a smaller accumulation area (similar to 222 km(2)), and advanced 30 km down valley across a low gradient forefield. Surface exposure ages from two moraine complexes on this side of the mountains exhibit wide scatter (similar to 14-53 ka, n = 8), making paleoclimate inferences and comparison to other proxies difficult. Ice surface profile reconstructions imply that the two paleoglaciers likely shared an ice divide.

Place, publisher, year, edition, pages
2018. Vol. 47, p. 54-71
Keywords [en]
Altai, Ikh Turgen mountains, Chikhacheva range, Paleoglaciology, Glacial geomorphology, Be-10 surface exposure dating, Geomorphometric analysis
National Category
Earth and Related Environmental Sciences
Identifiers
URN: urn:nbn:se:su:diva-160161DOI: 10.1016/j.quageo.2018.05.008ISI: 000441488900004OAI: oai:DiVA.org:su-160161DiVA, id: diva2:1248759
Available from: 2018-09-17 Created: 2018-09-17 Last updated: 2018-09-17Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full text

Search in DiVA

By author/editor
Blomdin, RobinStroeven, Arjen P.Harbor, Jonathan M.Caffee, Marc W.Hättestrand, ClasJansson, Krister N.
By organisation
Department of Physical Geography
In the same journal
Quaternary Geochronology
Earth and Related Environmental Sciences

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 9 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf