[{"name":"ellerton-2022-osl-queensland-1","title":"Paleomagnetic and optically stimulated luminescence data from Fraser Island and the Cooloola Sand Mass, Queensland, Australia","summary":"This dataset includes chronological data collected from the Fraser Island and Cooloola Sand Mass dunefields between 2015 and 2019. The purpose of the underlying study was to identify major periods of dune building over the Pleistocene time period to determine the mechanisms responsible for their formation.\r\n\r\nThis was done using optically stimulated luminescence (OSL) dating which can be used to date the time period when a sand dune was last active. Due to the exceptionally old luminescence ages produced here we also sort additional age control by developing a paleomagnetic stratigraphy of the Cooloola Sand Mass. Paleomagnetic analysis was performed on pieces of ferricrete that have formed in buried soils that allowed us to identify the stratigraphic position of the most recent magnetic reversal which occurred at 773 thousand years ago.\r\n\r\nThe paleomagnetic data includes the demagnetization steps, demagnetization results and the principle component analyses used for interpretation. The OSL data includes site information, equivalent dose results and the chemistry information used for dose rate calculations.\r\n\r\n\r\n\r\n","citations":"Aitken MJ, Alldred JC (1972) The Assessment of error limits in thermoluminescent dating. Archaeometry 14:257\u2060\u200a\u2013\u200a\u2060267. doi:10.1111\/j.1475-4754.1972.tb00068.x\r\n\r\nGu\u00e9rin G, Jain M, Thomsen KJ, Murray AS, Mercier N (2015) Modelling dose rate to single grains of quartz in well-sorted sand samples: The dispersion arising from the presence of potassium feldspars and implications for single grain OSL dating. Quaternary Geochronology 27:52\u2060\u200a\u2013\u200a\u206065. doi:10.1016\/j.quageo.2014.12.006\r\n\r\nHeslop D, Roberts AP (2016) Estimation and propagation of uncertainties associated with paleomagnetic directions. J Geophys Res: Solid Earth 121:2274\u2060\u200a\u2013\u200a\u20602289. doi:10.1002\/2015JB012544\r\n\r\nHeslop D, Roberts AP (2020) Uncertainty propagation in hierarchical paleomagnetic reconstructions. J Geophys Res: Solid Earth 125:e2020JB019488. doi:10.1029\/2020JB019488","comments":"OSL measurements and analysis were conducted at the Utah State University Luminescence Laboratory. Single-aliquot regenerative dose (SAR) analysis was performed on small aliquots (~10 grains) of 180\u2060\u200a\u2013\u200a\u2060250 \u00b5m quartz sand using a Ris\u00f8 TL\/OSL Model DA-20 readers with blue-green light emitting diodes (LEDs) (470\u00b130 nm) as the stimulation source. Dose rate calculations were performed on representative sub-samples using ICP-MS and ICP-AES to determine the concentrations of K, Rb, Th and U in the bulk sediment surrounding the samples.\r\n\r\nPaleomagnetic analysis was conducted on pieces of orientated ferricrete collected from outcrop at the Geological Survey of Japan, Tsukuba, Japan, where a Natsuhara-Giken oven with precise temperature control was used for thermal demagnetization with NRM measured on a 2-G Enterprises superconducting rock magnetometer system. Additional analyses were performed at the Australian National University using a 2-G Enterprises superconducting rock magnetometer.","category":"Terrestrial","subcategory":"Geochronology","keywords":"Geochronology; Paleomagnetism; Optically stimulated luminescence; OSL; Dunes; Dating; Fraser Island; Cooloola Sand Mass; Middle Pleistocene Transition; Matuyama\/Bruhnes boundary","scientist":"Daniel Ellerton, Tammy Rittenour, Andrew Roberts, James Shulmeister, Xiang Zhao, Pengxiang Hu, Tetsuro Sato, Hirokuni Oda","firstname":"Daniel","lastname":"Ellerton","address":"Department of Geological Sciences; Stockholm University","postalcode":"SE-106 91","city":"Stockholm","province":"","country":"Sweden","parameters":"Earth science > Land surface > Geomorphic landforms\/processes > Aeolian landforms > Dunes > Parabolic dune","location":"Continent > Australia\/New Zealand","progress":"Completed","language":"English","project":"ARC Discovery Project: Climate and environmental history of SE Queensland dunefields (DP150101513)","publisher":"Bolin Centre Database","version":"1","constrains":"","access":""}]