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):
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):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | ||||
| 2 | Latitude of event | Latitude | ||||
| 3 | Longitude of event | Longitude | ||||
| 4 | Elevation of event | Elevation | m | |||
| 5 | Depth, top/min | Depth top | m | Kaiser, Knut | ||
| 6 | Depth, bottom/max | Depth bot | m | Kaiser, Knut | ||
| 7 | DEPTH, sediment/rock | Depth sed | m | Geocode | ||
| 8 | Age, dated material | Dated material | Kaiser, Knut | |||
| 9 | Sample ID | Sample ID | Kaiser, Knut | |||
| 10 | Carbon-14 | 14C | % | Kaiser, Knut | in % modern, see dataset comment for further details | |
| 11 | Carbon-14 concentration, standard deviation | 14C conc std dev | ± | Kaiser, Knut | ||
| 12 | δ13C | δ13C | ‰ PDB | Kaiser, Knut | ||
| 13 | Age, dated | Age dated | ka BP | Kaiser, Knut | Age, 14C AMS | ka BP, see dataset comment for explanation of negative ages |
| 14 | Age, dated standard deviation | Age dated std dev | ± | Kaiser, Knut | ||
| 15 | Age | Age | a AD/CE | Kaiser, Knut | Age, 14C calibrated | |
| 16 | Age | Age | a AD/CE | Kaiser, Knut | Age, 14C calibrated | range min |
| 17 | Vegetation type | Vegetation type | Kaiser, Knut | present sedge species |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
114 data points