Simms, Alexander R; DeWitt, Regina; Kouremenos, Peter; Drewry, Ann Marie (2011): Equivalent dose, dose rate and age determination of cobble surfaces in the Antarctic [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.818413, Supplement to: Simms, AR et al. (2011): A new approach to reconstructing sea levels in Antarctica using optically stimulated luminescence of cobble surfaces. Quaternary Geochronology, 6(1), 50-60, https://doi.org/10.1016/j.quageo.2010.06.004
Always quote citation above when using data! You can download the citation in several formats below.
Abstract:
Most current methods of reconstructing past sea levels within Antarctica rely on radiocarbon dating. However, radiocarbon dating is limited by the availability of material for dating and problems inherent with radiocarbon reservoirs in Antarctic marine systems. Here we report on the success of a new approach to dating raised beach deposits in Antarctica for the purpose of reconstructing past sea levels. This new approach is the use of optically stimulated luminescence (OSL) on quartz-grains obtained from the underside of cobbles within raised beaches and boulder pavements. We obtained eight OSL dates from three sites along the shores of Maxwell Bay in the South Shetland Islands of the Antarctic Peninsula. These dates are internally consistent and fit well with previously published radiocarbon ages obtained from the same deposits. In addition, when the technique was applied to a modern beach, it resulted in an age of zero. Our results suggest that this method will provide a valuable tool in the reconstruction of past sea levels in Antarctica and other coarse-grained beach deposits across the globe.
Further details:
Galbraith, R F; Roberts, R G; Laslett, M; Yoshida, H; Olley, J M (1999): Optical dating of single and multiple grains of quartz from Jinmium Rock Shelter, northern Australia: Part I, Experimental design and statistcal models. Archaeometry, 41(2), 339-364, https://doi.org/10.1111/j.1475-4754.1999.tb00987.x
Coverage:
Median Latitude: -62.220295 * Median Longitude: -58.856028 * South-bound Latitude: -62.237776 * West-bound Longitude: -58.923150 * North-bound Latitude: -62.211240 * East-bound Longitude: -58.722143
Minimum ELEVATION: 6.6 m a.s.l. * Maximum ELEVATION: 11.0 m a.s.l.
Event(s):
NBP07-03_AI * Latitude: -62.211550 * Longitude: -58.922970 * Elevation Start: 6.0 m * Elevation End: 11.0 m * Location: Ardley Island, Maxwell Bay, King George Island, Antarctic Peninsula * Campaign: NBP07-03_Land * Method/Device: Sampling by hand (HAND)
NBP07-03_PT * Latitude: -62.237500 * Longitude: -58.720800 * Elevation Start: 2.0 m * Elevation End: 17.0 m * Location: Potter Cove, King George Island, Antarctic Peninsula * Campaign: NBP07-03_Land * Method/Device: Outcrop sample (OUTCROP)
NBP07-03_SH * Latitude: -62.200000 * Longitude: -58.917000 * Elevation: 8.4 m * Location: South Shetland Islands * Campaign: NBP07-03_Land * Method/Device: Sampling by hand (HAND) * Comment: position estimated
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | ||||
| 2 | Sample ID | Sample ID | Simms, Alexander R | |||
| 3 | Area/locality | Area | Simms, Alexander R | |||
| 4 | LATITUDE | Latitude | Geocode | |||
| 5 | LONGITUDE | Longitude | Geocode | |||
| 6 | ELEVATION | Elevation | m a.s.l. | Geocode | ||
| 7 | Equivalent dose | De | Gy | Simms, Alexander R | Calculated | calculated using the common or minimum age model of Galbraith et al. (1999) |
| 8 | Equivalent dose, error | De e | ± | Simms, Alexander R | Calculated | |
| 9 | Dose rate, sediment | D sed | Gy/ka | Simms, Alexander R | ||
| 10 | Dose rate, sediment, error | D sed e | ± | Simms, Alexander R | ||
| 11 | Age, dated | Age dated | ka | Simms, Alexander R | ||
| 12 | Age, error | Age e | ± | Simms, Alexander R | ||
| 13 | Age, dated | Age dated | ka BP | Simms, Alexander R | Calculated | [ka BP] samples were collected in 2007 thus 57 years was subtracted from the age to allow direct comparison of calibrated radiocarbon ages |
| 14 | Error, relative | Error r | % | Simms, Alexander R |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
70 data points