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Kaiser, Knut; Miehe, Georg; Barthelmes, Alexandra; Ehrmann, Otto; Scharf, Andreas; Schult, Manuela; Schlütz, Frank; Adamczyk, Sonja; Frenzel, Burkhard (2008): (Table 3) AMS radiocarbon datings of soil profiles obtained in the Nagqu area [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.787163, In supplement to: Kaiser, K et al. (2008): Turf-bearing topsoils on the central Tibetan Plateau, China: Pedology, botany, geochronology. CATENA, 73(3), 300-311, https://doi.org/10.1016/j.catena.2007.12.001

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Coverage:
Median Latitude: 31.633020 * Median Longitude: 92.314945 * South-bound Latitude: 31.316220 * West-bound Longitude: 91.482640 * North-bound Latitude: 31.862970 * East-bound Longitude: 93.091690
Minimum DEPTH, sediment/rock: 0.040 m * Maximum DEPTH, sediment/rock: 0.290 m
Event(s):
NAQ_3 * Latitude: 31.764610 * Longitude: 92.629890 * Elevation: 4572.0 m * Location: Tibet * Method/Device: Soil profile (SOIL)
NAQ_7 * Latitude: 31.862970 * Longitude: 93.091690 * Elevation: 4484.0 m * Location: Tibet * Method/Device: Soil profile (SOIL)
NAQ_18 * Latitude: 31.588280 * Longitude: 91.482640 * Elevation: 4568.0 m * Location: Tibet * Method/Device: Soil profile (SOIL)
Comment:
All macroremain samples from the Nagqu area yielded negative radiocarbon ages. The atmospheric nuclear weapon tests in the 1950s and early 1960s caused a steep increase of atmospheric 14C production to nearly double the natural value in 1963, leading to 'hyper-modern' 14C contents in naturally produced organic material, thus to highly negative radiocarbon ages. Thus the radiocarbon ages of the macroremains analysed can be clearly identified as modern (after 1950).
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1Event labelEvent
2Latitude of eventLatitude
3Longitude of eventLongitude
4Elevation of eventElevationm
5Depth, top/minDepth topmKaiser, Knut
6Depth, bottom/maxDepth botmKaiser, Knut
7DEPTH, sediment/rockDepth sedmGeocode
8Age, dated materialDated materialKaiser, Knut
9Sample IDSample IDKaiser, Knut
10Carbon-1414C%Kaiser, Knutin % modern, see dataset comment for further details
11Carbon-14 concentration, standard deviation14C conc std dev±Kaiser, Knut
12δ13Cδ13C‰ PDBKaiser, Knut
13Age, datedAge datedka BPKaiser, KnutAge, 14C AMSka BP, see dataset comment for explanation of negative ages
14Age, dated standard deviationAge dated std dev±Kaiser, Knut
15AgeAgea AD/CEKaiser, KnutAge, 14C calibrated
16AgeAgea AD/CEKaiser, KnutAge, 14C calibratedrange min
17Vegetation typeVegetation typeKaiser, Knutpresent sedge species
Size:
114 data points

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