Small aliquot and single grain IRSL and post-IR IRSL dating of fluvial and alluvial sediments from the Pativilca valley, Peru

Trauerstein, Mareike; Lowick, Sally E.; Preusser, Frank; Schlunegger, Fritz

doi:10.1016/j.quageo.2013.12.004

Cited by 74 publications

(60 citation statements)

References 39 publications

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“…After such correction, the agreement between the IRSL (50 C) and pIRIR ages were also found for other samples (e.g. Buylaert et al, 2009;Trauerstein et al, 2014). The extended plateau ages for each signal are also plotted as a function of sampling depth in Fig.…”

Section: Performance Of Residual Dose Correctionsupporting

confidence: 62%

Feldspar multi-elevated-temperature post-IR IRSL dating of the Wulanmulun Paleolithic site and its implication

Xue

Zhang

Hou

et al. 2015

Quaternary Geochronology

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Section: Performance Of Residual Dose Correctionsupporting

confidence: 62%

Feldspar multi-elevated-temperature post-IR IRSL dating of the Wulanmulun Paleolithic site and its implication

Xue

Zhang

Hou

et al. 2015

Quaternary Geochronology

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“…Thus, it is still a challenge to obtain reliable quartz OSL ages. A single‐grain Post‐IR IRSL dating method for K‐feldspar (e.g., Fu et al, ; Nian, Bailey, & Zhou, ; Trauerstein, Lowick, Preusser, & Schlunegger, ) or the polymineral or K feldspar pIRIR might be developed in the future to date these poorly bleached samples. Further investigation of multiple dating approaches is helpful to understand the accuracy and reliability of OSL loess dating in the Ili Basin even in arid Central Asia.…”

Section: Discussionmentioning

confidence: 99%

Radiometric dating of late Quaternary loess in the northern piedmont of South Tianshan Mountains: Implications for reliable dating

Song

Luo

et al. 2018

Geological Journal

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Reliable chronologies are prerequisites when interpreting proxy records in terrestrial archives of Quaternary climate and environmental change. Optically stimulated luminescence (OSL) dating and accelerator mass spectrometry radiocarbon dating (AMS 14C) are commonly used to date late Quaternary loess deposits in the Chinese Loess Plateau, but the range and reliability of the two methods in Central Asia are still debated. In this study, we investigate both fine‐grained quartz OSL and AMS 14C dating of a late Quaternary loess section located at the northern piedmont of the South Tianshan Mountains in Central Asia and discuss the reliability of the two radiometric dating methods. The results show that the OSL and AMS 14C ages are generally consistent with the stratigraphic sequence when the ages are younger than 25 cal ka BP, which means that both can be used to establish a reliable chronology in the Ili Basin. But beyond this age, the OSL dating method seems to be a more reliable approach. The results also supported previous dates based on medium‐grained quartz OSL dating of the Ili loess in the southern piedmont of the North Tianshan Mountains. Radiocarbon ages older than 25 cal ka BP should be treated with caution, and attention must be paid to the influence of pedoturbation on OSL signals in the Central Asian loess. Multiple dating approaches for mutual authentication and exploring new dating materials are suggested in further loess chronological research. These findings will be helpful in establishing a reliable timescale and in reconstructing high‐resolution environmental change in Central Asia.

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“…We use a single-grain post-IR IRSL method to determine the equivalent dose (D e ) since deposition. This technique has only recently been developed (Buylaert et al, 2009;Thiel et al, 2011), and few studies have applied the technique to single grains within fluvial deposits (Nian et al, 2012;Trauerstein et al, 2014;Brown et al, 2015). This study explores the applicability of this method in a region where the quartz content has been measured to be as low as 0.05%-1% by weight.…”

Section: Equivalent Dose Determinationmentioning

confidence: 99%

Lag and mixing during sediment transfer across the Tian Shan piedmont caused by climate‐driven aggradation–incision cycles

et al. 2017

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Transient sediment storage and mixing of deposits of various ages during transport across alluvial piedmonts alters the clastic sedimentary record. We quantify buffering and mixing during cycles of aggradation-incision in the north piedmont of the Eastern Tian Shan. We complement existing chronologic data with 20 new luminescence ages and one cosmogenic radionuclide age of terrace abandonment and alluvial aggradation. Over the last 0.5 Myrs, the piedmont deeply incised and aggraded many times per 100 kyr. Aggradation is driven by an increased flux of glacial sediment accumulated in the high range and flushed onto the piedmont by greater water discharge at stadialinterstadial transitions. After this sediment is evacuated from the high range, the reduced input sediment flux results in fluvial incision of the piedmont as fast as 9 cm/yr and to depths up to 330 m. The timing of incision onset is different in each river and does not directly reflect climate forcing but the necessary time for the evacuation of glacial sediment from the high range. A significant fraction of sediments evacuated from the high range is temporarily stored on the piedmont before a later incision Accepted ArticleThis article is protected by copyright. All rights reserved.phase delivers it to the basin. Coarse sediments arrive in the basin with a lag of at least 7 to 14 kyrs between the first evacuation from the mountain and later basinward transport. The modern output flux of coarse sediments from the piedmont contains a significant amount of recycled material that was deposited on the piedmont as early as the Middle Pleistocene. Variations in temperature and moisture delivered by the Westerlies are the likely cause of repeated aggradation-incision cycles in the north piedmont instead of monsoonal precipitation. The arrival of the gravel front into the proximal basin is delayed relative to the fine-grained load and both are separated by a hiatus. This work shows, based on field observations and data, how sedimentary systems respond to climatic perturbations, and how sediment recycling and mixing can ensue.

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Small aliquot and single grain IRSL and post-IR IRSL dating of fluvial and alluvial sediments from the Pativilca valley, Peru

Cited by 74 publications

References 39 publications

Feldspar multi-elevated-temperature post-IR IRSL dating of the Wulanmulun Paleolithic site and its implication

Feldspar multi-elevated-temperature post-IR IRSL dating of the Wulanmulun Paleolithic site and its implication

Radiometric dating of late Quaternary loess in the northern piedmont of South Tianshan Mountains: Implications for reliable dating

Lag and mixing during sediment transfer across the Tian Shan piedmont caused by climate‐driven aggradation–incision cycles

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