Not logged in
PANGAEA.
Data Publisher for Earth & Environmental Science

Ahlborn, Marieke; Haberzettl, Torsten; Wang, Junbo; Fürstenberg, Sascha; Mäusbacher, Roland; Mazzocco, Jeaneth; Pierson, James; Zhu, Liping; Frenzel, Peter (2016): Age determination of Tangra Yumco lake sediments [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.869941, Supplement to: Ahlborn, M et al. (2015): Holocene lake level history of the Tangra Yumco lake system, southern-central Tibetan Plateau. The Holocene, 26(2), 176-187, https://doi.org/10.1177/0959683615596840

Always quote citation above when using data! You can download the citation in several formats below.

RIS CitationBibTeX CitationShow MapGoogle Earth

Abstract:
Massive carbonate banks representing ancient lacustrine deposits are exposed in the catchment of the lake Tangra Yumco (southern-central Tibetan Plateau) and nearby lake Xuru Co. Nine sediment samples were taken below and above these lacustrine deposits to determine periods of changing lake level using optically stimulated luminescence (OSL) applying a multiple aliquot regeneration (MAR) protocol. According to facies and stratigraphy samples below the carbonate banks indicate a rising and samples from above a falling lake level. The results indicate that the rising lake level of Tangra Yumco passed the sampling location at 10.5 ka and 2.1 ka while a falling lake level passed the sampling location at 0.9 ka. The rising lake level of Xuru Co passed the sampling location 7.9 ka and 1.7 ka and a falling lake level passed the sampling location at 0.5 ka showing a similar trend. Combining these results with recalculated cosmogenic nuclide ages and previously published feldspar luminescence data allow the establishment of an improved Holocene lake level reconstruction for Tangra Yumco, which is unique for the southern-central Tibetan Plateau. Within the last 10.5 ka the lake level of Tangra Yumco crested a lake level highstand of 181-183 m above the recent lake level at 8.5 ka and has generally fallen since, with a minor lake level rise at 2.1 ka. Lake level variations at Tangra Yumco occur simultaneously with other lakes on the Tibetan Plateau indicating that variations were controlled by monsoonal dynamics with a moist early Holocene and a successive reduction of available moisture thereafter. The precipitation directly reaching the lake via runoff that was required for the lake level rise between 10.5-8.5 ka is 9 mm a-1 (compared to a modern value of 35 mm a-1), providing valuable insights in the magnitude of monsoonal variations on the southern central Tibetan Plateau.
Further details:
Kong, Ping; Na, Chunguang; Brown, Roderick; Fabel, Derek; Freeman, Stewart; Xiao, Wei; Wang, Yajun (2011): Cosmogenic 10Be and 26Al dating of paleolake shorelines in Tibet. Journal of Asian Earth Sciences, 41(3), 263-273, https://doi.org/10.1016/j.jseaes.2011.02.016
Rades, Eike F; Hetzel, Ralf; Xu, Qiang; Ding, Lin (2013): Constraining Holocene lake-level highstands on the Tibetan Plateau by 10Be exposure dating: a case study at Tangra Yumco, southern Tibet. Quaternary Science Reviews, 82, 68-77, https://doi.org/10.1016/j.quascirev.2013.09.016
Coverage:
Median Latitude: 31.051137 * Median Longitude: 86.619269 * South-bound Latitude: 30.291050 * West-bound Longitude: 86.360100 * North-bound Latitude: 31.616700 * East-bound Longitude: 86.786300
Minimum ELEVATION: 4476 m a.s.l. * Maximum ELEVATION: 4728 m a.s.l.
Event(s):
Tangra_Yumco * Latitude: 31.250000 * Longitude: 86.720000 * Location: Tibetan Plateau * Method/Device: Multiple investigations (MULT)
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1Sample code/labelSample labelAhlborn, Marieke
2LATITUDELatitudeAhlborn, MariekeGeocode
3LONGITUDELongitudeAhlborn, MariekeGeocode
4ELEVATIONElevationm a.s.l.Ahlborn, MariekeGeocode
5HeightHeightmAhlborn, Mariekeabove recent lake level
6AGEAgeka BPAhlborn, MariekeGeocode
7Age, dated standard errorAge std e±Ahlborn, Marieke
8Analytical methodMethodAhlborn, Marieke
9Age, commentCommAhlborn, Marieke
Size:
69 data points

Download Data

Download dataset as tab-delimited text — use the following character encoding:

View dataset as HTML