Equivalent dose, dose rate and age determination of cobble surfaces in the Antarctic, supplement to: Simms, Alexander R; DeWitt, Regina; Kouremenos, Peter; Drewry, Ann Marie (2011): A new approach to reconstructing sea levels in Antarctica using optically stimulated luminescence of cobble surfaces. Quaternary Geochronology, 6(1), 50-60

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...

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Bibliographic Details
Main Authors: Simms, Alexander R, DeWitt, Regina, Kouremenos, Peter, Drewry, Ann Marie
Format: Dataset
Language:English
Published: PANGAEA - Data Publisher for Earth & Environmental Science 2011
Subjects:
Event label
Sample ID
Area/locality
LATITUDE
LONGITUDE
ELEVATION
Equivalent dose
Equivalent dose, error
Dose rate, sediment
Dose rate, sediment, error
Age, dated
Age, error
Error, relative
Sampling by hand
Outcrop sample
Calculated
NBP07-03_Land
Antarctic
The Antarctic
Antarctic Peninsula
South Shetland Islands
Maxwell Bay
Raised Beach
DeWitt
Regina
Antarc*
Antarctica
Online Access:https://dx.doi.org/10.1594/pangaea.818413
https://doi.pangaea.de/10.1594/PANGAEA.818413
Description
Summary: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.

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