Showing papers in "Quaternary Geochronology in 2016"

TL;DR: In this article, the authors describe a calibration procedure developed during the Cosmic-Ray Produced Nuclide Systematics on Earth (CRONUS-Earth) project and its application to an extensive data set that included both new cosmogenic nuclide samples and samples from previously published studies.

TL;DR: The CRONUScalc project as discussed by the authors is a tool for comparing cosmogenic nuclide data from different nuclides, which can be used for many applications, such as production rate, erosion rate, and surface exposure ages.

TL;DR: In this article, the authors proposed a physically based scaling model for cosmogenic-nuclide accumulation, denoted LSD and LSDn, by generalizing global numerical simulations of cosmic-ray processes.

TL;DR: In this paper, three sites were used to calibrate the K and Ca spallation pathways for 36Cl production yielding production rates of 56.0 ± 4.1 at 36Cl (g Ca)−1 yr−1 and 155 ± 11 at 36cl (g K)− 1 year−1 respectively, using Lifton-Sato-Dunai scaling (LSDn).

TL;DR: In this article, the authors demonstrate the value of tracing Be throughout the extraction process (both after dissolution and after processing), producing pure Be (by optimizing ion exchange chromatography methods and quantifying quartz mineral separate and final Be fraction purity), and minimizing background (through reducing both laboratory process blanks and 10B isobaric interference).

TL;DR: The abanico plot as mentioned in this paper combines both aspects and therefore allows comprehensive presentation of chronometric data with individual standard errors, and therefore provides an explicit picture of the age frequency distribution.

TL;DR: In this article, the effect of rejection criteria usually employed in single-grain dating on dose and over-dispersion is tested using both laboratory irradiated samples and natural samples and it is shown that by careful consideration of the luminescence characteristics of individual grains, they are able to obtain good agreement with the independent age control by applying alternative rejection criteria but this is at the cost of reducing the accepted grain population by more than an order of magnitude, with the corresponding inevitable decrease in precision.

TL;DR: In this paper, the authors present results of the model testing and validation by multiple dating approaches for the varved sediment record from Lake Żabinskie (northeastern Poland).

TL;DR: Cosmogenic exposure dating of glacial boulders is commonly used to estimate the timing of past glaciations because the method enables direct dating of the duration a boulder has been exposed to cos...

TL;DR: In this article, a multi-OSL-thermochronometer was proposed to resolve rock cooling histories over timescales ≤ 0.2 Ma and provides much tighter constraint on late-stage cooling histories than single-system OSL thermochronometry.

TL;DR: In this article, the authors investigated the applicability of SGC for the optically stimulated luminescence (OSL) signal from single grains and small aliquots of sedimentary quartz from Haua Fteah cave, in Libya.

TL;DR: In this article, the authors presented grain-specific glass chemistry, including for the first time, single grain trace element data, for a composite proximal sequence and a distal tephra from Lake Kushu, northern Japan (ca. 1100 km away from Changbaishan Volcano).

TL;DR: In this article, the authors investigated extended-range single-grain OSL dating potential at Cuesta de la Bajada, one of the most important Ancient Middle Palaeolithic sites in the Iberian Peninsula.

TL;DR: It is confirmed that the ESR dose response of fossil tooth enamel can be best described by a double saturating exponential (DSE) function and some detailed recommendations are provided to ensure reliable dose evaluations with either the SSE or DSE functions.

TL;DR: In this article, the authors revisited existing laser ablation (LA) methods for corals (cold- and warm-water) and speleothems spanning the last 343 thousand years (ka) and measured the required isotopes (238U, 234U, 230U, and 232Th) using a combination of a single central ion counter and an array of Faraday cups.

TL;DR: Schmidt Hammer exposure dating (SHED) as mentioned in this paper has been used to date the British Ice Sheet (BIS) in the UK using a Schmidt Hammer exposure detector, which has been shown to provide comparable accuracy and precision to TCND.

TL;DR: In this paper, the authors explore the violet stimulated luminescence (VSL) signal at the Luochuan section, which provides a continuous archive of homogenous sediment with favourable luminecence characteristics and a solid independent age framework.

TL;DR: In this paper, an age population unmixing algorithm applied to single-crystal fusion data identifies a younger group of K-feldspar and biotite crystals that appear to be largely unaffected by excess 40 Ar.

TL;DR: In this article, radiometric dating, magnetic susceptibility (MS), biogenic opal content, diatom abundance fluctuation, and paleomagnetic information were investigated on a north-south transect of central Scotia Sea sediment cores to verify their reliability as stratigraphic tools.

TL;DR: The Mejillones Peninsula is thought to have one of the highest rates of tectonic uplift along the active convergent margin of northern Chile, and exposure age dating from a flight of well-preserved marine terraces was used by as discussed by the authors to determine the long-term history of the northern part of the Peninsula.

TL;DR: In this paper, the authors used AMS 14C dating of both bulk peat and individual macrofossils from the same basal horizon at each of 40 peatland cores across North America and Siberia to evaluate the differences between the two sample types.

TL;DR: In this article, the authors investigated the natural luminescence signal and anomalous fading of IRSL measured at 50 °C (IRSL50) in 32 bedrock samples collected from a variety of lithologies and exhumation settings (Alaska and Norway).

TL;DR: In this article, Accelerator mass spectrometry (AMS) radiocarbon dating of charcoals and 10 mollusc species (+2 identified at the family level) yield 64 new ages from the Dunaszekcső loess record, Hungary.

TL;DR: In this paper, a large number of individuals were found to pre-date the settlement ( landnam ) of Iceland in AD 871±2, inferring that a proportion of their diet must have contained some non-terrestrial protein that produced a reservoir effect.

TL;DR: In this paper, a direct comparison of isochron burial dating with K-Ar and 40Ar/39Ar bracketing ages on volcanic flows that sandwich a fluvial gravel layer in the Xinjiang province of northwestern China is presented.

TL;DR: In this article, a 30.5m sediment core was recovered from the coastal lake Eilandvlei (EV13), which represents a unique high-resolution record of environmental change for southern Africa.

TL;DR: In this paper, the most frequent terrestrial and marine mollusk shells from the Usiminas shellmound, on Cabo Frio Island, were measured and a value of 67.33 14C yr was obtained for the local offset from the average global marine reservoir age.

TL;DR: In this paper, the authors used 3 He and 10 Be exposure dating of olivine phenocrysts and quartz-bearing xenoliths to determine the age of the youngest lava flows and cinder cones.

TL;DR: In this article, the internal U, Th and Rb concentrations of single grains of alkali-feldspar can impact upon luminescence dating, and the scatter in the D e distributions arising from internal alpha and beta dose-rates for both samples could be reduced by selecting only the brightest 20% of grains for luminecence dating.