-
ESR/U-series and pIR-IR290 dating of the Middle Pleistocene site of Lunel-Viel (LV I), Hérault, Southern France Quat. Geochronol. (IF 2.7) Pub Date : 2024-03-20 Christophe Falguères, Christelle Lahaye, Olivier Tombret, Lisa Garbé, Brice Lebrun, Jean-Jacques Bahain, Nicolas Frerebeau, Carla Giuliani, Jean-Philip Brugal
The Mas des Caves site at Lunel-Viel, Southern France, is a complex of several caves, in Miocene limestone, that have yielded a rich archaeo-palaeontological sequence attributed to the Middle Pleistocene with abundant vertebrates and lithic artefacts. The first caves (LVI, II and III), discovered in 1800, were excavated at the beginning of the 19th century (Serres et al., 1828) before falling into
-
On the early postclassic collapse of Plazuelas (Northern Border of Mesoamerica): Archaeomagnetic evidence based on full geomagnetic vectors Quat. Geochronol. (IF 2.7) Pub Date : 2024-03-16 Alejandra García-Pimentel, Avto Goguitchaichvili, Ma Ruth Ortega Rivera, Rafael García-Ruiz, Rubén Cejudo, Vadim Kravchinsky, Miguel Cervantes, Juan Morales
We report a detailed rock-magnetic, archaeomagnetic and absolute intensity investigation on burned remains of the Plazuelas archaeological site (Northern Border of Mesoamerica). Fifty-six specimens were subjected to step-wise alternating field demagnetizations to retrieve characteristic remanence directions. All samples yielded evidence of stable, single-component magnetization carried by magnetite
-
ESR/U-series dating of palaeontological remains from the Neanderthal site of Mutzig-Rain (Alsace, France) Quat. Geochronol. (IF 2.7) Pub Date : 2024-03-15 Jean-Jacques Bahain, Olivier Tombret, Lisa Garbé, Christophe Falguères, Héloïse Koehler, Fabio Wegmüller
The Middle Paleolithic site of Mutzig-Rain, discovered in 1992, has been studied through several pits (called M1 to M15) and excavation area since 2009, evidencing several localities and delivering more than 5000 lithic artifacts and 12,000 well preserved paleontological remains. The main excavation M2 sequence corresponds to a collapsed rock shelter, containing several levels of Middle Paleolithic
-
A Bayesian hierarchical age model for single-grain optical dating of feldspars Quat. Geochronol. (IF 2.7) Pub Date : 2024-03-13 Bo Li, Zenobia Jacobs, Mariana Sontag-González, Kieran O'Gorman, Richard G. Roberts
The distribution of equivalent dose (D) values of individual feldspar grains is affected by a range of variables, including internal and external dose rates, residual doses, and uncertainties associated with luminescence behaviours and measurement errors. The distributions of these variables may be non-Gaussian, resulting in a complex D distribution pattern that may be challenging to interpret and
-
Integration of radiocarbon dating and paleomagnetic secular variation to date Las Brusquillas (LB4) archaeological site, Pampas region, Argentina Quat. Geochronol. (IF 2.7) Pub Date : 2024-03-08 Romina Valeria Achaga, Agustina Massigoge, Maria Alicia Irurzun, Daniela Storchi Lobos, Cristian Favier Dubois, Avto Goguitchaichvili, Claudia Susana Gabriela Gogorza
This article presents the first age model built with a combination of paleomagnetic data and radiocarbon dating for the Las Brusquillas 4 archaeological site (Pampas region, Argentina). The sedimentary sequence represents fluvio-lacustrine deposits where faunal remains and lithic artefacts were found in two archaeological layers separated by culturally sterile sediments. Our age model is fundamental
-
Luminescence dating of tsunami deposits from the algarve shelf, Portugal Quat. Geochronol. (IF 2.7) Pub Date : 2024-03-04 Dominik Brill, Anja Zander, Pedro JM. Costa, Lisa Feist, Hannes Laermanns, Klaus Reicherter, Helmut Brückner
Offshore tsunami deposits have the potential to substantially improve our understanding of long-term tsunami hazard. This may be particularly true for the Portuguese Algarve coast, where onshore sediment records are restricted to the last 3000 years due to scarcity of sediment archives suitable for identifying tsunami deposits. This study investigates the potential of optically stimulated luminescence
-
Single-grain K-feldspar luminescence dating of the late Quaternary rapid decline in the largest Lake over the Tibetan Plateau Quat. Geochronol. (IF 2.7) Pub Date : 2024-02-22 Hao Long, Jingran Zhang, Xiaoling Huang, Aimin Zhang, Na Yang, Mengying He, Linhai Yang
Well-preserved shorelines, situated at elevations ranging from tens to hundreds of meters above the current lake levels, are commonly found in the lake basins across the Tibetan Plateau (TP). These shorelines offer a valuable opportunity to reconstruct past hydroclimate changes, contingent upon precise age determination of palaeoshorelines. While single-aliquot luminescence methods have been extensively
-
Diachronic quantification of the local marine reservoir effect (MRE) using Loripes orbiculatus shells from late holocene lagoonal deposits at Puntone di Scarlino (Central Tuscany, Italy): Proposed roles of microbial diagenesis and sedimentation rates Quat. Geochronol. (IF 2.7) Pub Date : 2024-02-19 Jan Sevink, Michael W. Dee, Justyna J. Niedospial, Arnoud Maurer, Wim Kuijper, Ilaria Mazzini, Ilenia Arienzo, Rutger L. van Hall
With the aim of dating the early salt production at Puntone di Scarlino (Central Tuscany, Italy) and establishing the environmental history of this coastal site, a sediment core was studied, taken from the lagoon next to the archaeological site. Diachronic radiocarbon dating of terrestrial plant macro remains and (Poli, 1795) shells, a burrowing lucinid bivalve occurring throughout the sediment cored
-
Coupled luminescence and cosmogenic nuclide dating of postglacial deflation surfaces and sand drift on a raised ice-contact delta at Veinge, SW Sweden Quat. Geochronol. (IF 2.7) Pub Date : 2024-02-14 Helena Alexanderson, Per Möller, Mayank Jain, Mads F. Knudsen, Nicolaj Krog Larsen, Zoran M. Perić, Anne Sofie Søndergaard, Warren Thompson
Wind-abraded cobbles (ventifacts) and aeolian sand are known from the sandy-gravelly coastal areas of south-western Sweden, especially in association with raised deltas. Ventifacts are recorded on at least two different stratigraphic levels, at some sites atop glaciofluvial sediment, at other sites atop littoral deposits, and in some places at both levels, while aeolian sand usually forms a surficial
-
A new OSL dose model to account for post-depositional mixing of sediments Quat. Geochronol. (IF 2.7) Pub Date : 2024-02-12 Luke A. Yates, Zach Aandahl, Barry W. Brook, Zenobia Jacobs, Bo Li, Bruno David, Richard G. Roberts
In applications of optically stimulated luminescence (OSL) dating to unconsolidated sediments, the burial age of a sample of grains is estimated using statistical models of the distribution of the experimentally determined equivalent doses of the grains, together with estimates of the environmental dose rate. For grains that have been vertically mixed after deposition (e.g., due to bioturbation), existing
-
Thermoluminescence dating of gypsum in loess deposits Quat. Geochronol. (IF 2.7) Pub Date : 2024-02-12 Leibin Wang, Shimin Chen, Hui Zhao, Yuxin Fan, Aijun Sun, Qingsong Cai, Huizhen Deng, Jia Ai, Haiwei Zhang
Gypsum deposits within loess deposits are an important indicator of weathering processes and climate change. We conducted a thermoluminescence (TL) dating study of the gypsum from loess deposits of the Jiuzhoutai section in the western Chinese Loess Plateau. Determination of the equivalent doses (D) of gypsum samples was conducted using several protocols, including single-aliquot regenerative-dose
-
Late-glacial fluctuations of Himalayan glaciers: 10Be surface exposure dating northwest of Mt. Gang Benchhen Quat. Geochronol. (IF 2.7) Pub Date : 2024-02-04 Guocheng Dong, Weijian Zhou, Xiangke Xu, Yunchong Fu, Feng Xian, Li Zhang
Robustly-dated glacial landforms provide us a means of examining millennial-scale climate events during the late-glacial period, which could shed new light on the bipolar seesaw hypothesis. Although many moraines are proposed to be late-glacial in age across the Himalayas, the well-determined late-glacial moraine sequences remain extremely rare in the central Himalaya (e.g. the Paiku Gangri area).
-
Quantifying replication through repeated analysis of UVM-A, a liquid reference material for cosmogenic 10Be and 26Al studies Quat. Geochronol. (IF 2.7) Pub Date : 2024-01-24 Lee B. Corbett, Paul R. Bierman, Marc W. Caffee, Alan J. Hidy, Thomas E. Woodruff
In-situ produced cosmogenic nuclide sample preparation and analysis is a complicated, multi-step process with numerous possible sources of error, many of which have not been robustly quantified. Here, we use a liquid reference material (UVM-A) to test whether the analytic precision associated with individual isotopic ratios (n = 96) measured at two Accelerator Mass Spectrometry facilities (Lawrence
-
An integrated study of constraining the initial 230Th of a stalagmite and its implications Quat. Geochronol. (IF 2.7) Pub Date : 2024-01-10 Shouyi Huang, Yanjun Cai, Hai Cheng, Gang Xue, Xing Cheng, Mei He, Ruoxin Li, Le Ma, Yingying Wei, Yanbin Lu, Ling Yang, R. Lawrence Edwards
High-precision U–Th age is the key to promoting speleothem as an important archive for paleoclimate study. Notably, obtaining reliable U–Th age primarily relies on the accurate initial 230Th correction. However, correcting the U–Th age of stalagmite with the average 232Th/238U value in the crust is sometimes not enough to eliminate the effect of the initial 230Th, using other dating methods (e.g.,
-
ESR and luminescence thermochronometry of the Rhône valley, Switzerland Quat. Geochronol. (IF 2.7) Pub Date : 2024-01-01 Xiaoxia Wen, Melanie Bartz, Christoph Schmidt, Georgina E. King
The impact of Quaternary glaciations on rates of erosion remains disputed. This is mainly due to a lack of geochronological data that cover the timespan of 103−106 years. To fill this temporal gap, we develop electron spin resonance (ESR) thermochronometry using both the Al- and Ti-centres in quartz. The combination of ESR thermochronometry with numerical modelling allows rock cooling histories to
-
-
Luminescence for sedimentary provenance quantification in river basins: A methodological advancement Quat. Geochronol. (IF 2.7) Pub Date : 2023-11-11 Kartika Goswami, Santunu Kumar Panda, Linto Alappat, Naveen Chauhan
Multiple luminescence signals such as optically stimulated luminescence, infrared stimulated luminescence and thermoluminescence etc. are characteristic of the crystal/material. Recent studies have shown the potential of luminescence signals for sedimentary provenance studies, sediment fingerprinting and tracking. It is based on the premise that different provenances have different compositions of
-
Post-violet infrared stimulated luminescence (pVIRSL) dating protocol for potassium feldspar Quat. Geochronol. (IF 2.7) Pub Date : 2023-11-10 Monika Devi, Naveen Chauhan, Ashok K. Singhvi
Devi et al. (2022) suggested that post-violet infrared stimulated luminescence (pVIRSL; IRSL at 100 °C after a violet bleach at 50 °C) of K-feldspars, generally has a near zero athermal fading rate. This study explores the mechanism and suitability of the pVIRSL signal for dating applications. The results suggest that pVIRSL is a recuperated signal, arising from the eviction of charges in deep traps
-
Estimating extinction time using radiocarbon dates Quat. Geochronol. (IF 2.7) Pub Date : 2023-11-09 Salvador Herrando-Pérez, Frédérik Saltré
The extinction of a species is a key demographic event often signalling major climatic, ecological and/or evolutionary shifts that can be investigated using the fossil record. In that context, radiocarbon (14C) dating has become a popular tool to time and test for scenarios of extinction that can inform on how species respond to past and future ecosystem changes. We develop CRIWM, a method for estimating
-
IRSL and post-IR IRSL dating of multi-grains, single grains, and cobble surfaces to constrain fluvial responses to climate changes during the last glacial period in the Tokachi Plain, northern Japan Quat. Geochronol. (IF 2.7) Pub Date : 2023-11-07 Yuji Ishii
Accurate chronologies of fluvial terraces are necessary to understand fluvial responses to climate and sea-level changes and uplift. Although feldspar post-infrared infrared stimulated luminescence (post-IR IRSL, or pIRIR) dating has been used to establish chronologies for Pleistocene fluvial terraces, the signals can be partially bleached in short, high-gradient river systems typical of Japanese rivers
-
210Pb-based dating of recent sediments with χ-mapping versions of the CFCS, CIC, CF and TERESA models Quat. Geochronol. (IF 2.7) Pub Date : 2023-10-19 J.M. Abril-Hernández
The 210Pb-based method allows for absolute age determination in recent sediments on the centennial scale. The most common sedimentary scenarios involve ideal deposition without any further redistribution. The conventional models apply to such conditions by adding specific assumptions that allow analytical formulations: constant flux (CF), constant initial concentration (CIC), and constant flux with
-
Direct dating of a major rockfall at the Ba'ja Neolithic site (Jordan) using rock surface luminescence Quat. Geochronol. (IF 2.7) Pub Date : 2023-10-17 Sahar al Khasawneh, Andrew Murray, Hans Georg K. Gebel
In this study, we use luminescence rock surface dating to provide burial ages for buried surfaces of a large boulder now positioned on top of the ruins of the Neolithic Ba'ja village in Southern Jordan. Luminescence depth profiles for quartz optically stimulated luminescence (OSL), and feldspar infrared stimulated luminescence (IR50) signals indicate that the boulder experienced a complex transport
-
The Pauzhetka tephra (South Kamchatka): A key middle Pleistocene isochron for the Northwest Pacific and Okhotsk Sea sediments Quat. Geochronol. (IF 2.7) Pub Date : 2023-10-12 Natalia Bubenshchikova, Vera Ponomareva, Maxim Portnyagin, Dirk Nürnberg, Weng-si Chao, Lester Lembke-Jene, Ralf Tiedemann
The distal Pauzhetka tephra, formed by a large caldera-forming volcanic eruption in South Kamchatka, has been identified in eleven recently recovered marine sediment cores based on major and trace element compositions of tephra glass. Ten SO264 cores form a transect along the Emperor Seamount Chain (ESC) in the Northwest (NW) Pacific between ∼50.3° and ∼45°N, 800–1200 km southeast of the Pauzhetka
-
Testing infrared radiofluorescence dating on polymineral fine-grains from the Luochuan loess-palaeosol sequence, Chinese loess plateau Quat. Geochronol. (IF 2.7) Pub Date : 2023-10-16 G.R. Buchanan, S. Tsukamoto, J. Zhang, H. Long
In the past infrared radiofluorescence (IR-RF) dating has been focused on coarse-grain potassium feldspar (K-feldspar). However, polymineral fine-grains (4–11 μm) have proven to be successful dosimeters when dating using conventional infrared stimulated luminescence (IRSL). In this study, we investigated the potential of IR-RF signals generated from polymineral fine-grains for dating on 6 loess samples
-
Snow avalanche synchronicity derived from a multi-path tree-ring reconstruction in the Făgăraș Mountains (Southern Carpathians, Romania) Quat. Geochronol. (IF 2.7) Pub Date : 2023-10-04 Patrick Chiroiu, Alexandru L. Onaca, Adrien Favillier, Mircea Voiculescu, Christophe Corona, Petru Urdea, Markus Stoffel
Snow avalanches pose a constant threat to human lives, property, and infrastructure in mountainous regions worldwide. To efficiently manage avalanche-related hazards and risks, knowledge of past occurrences is crucial. In many mountain regions, archival records on past events are scarce or even completely missing. Therefore, natural archives, such as tree-rings, are widely used as proxies to build
-
Investigating the potential of African land snail shells (Gastropoda: Achatininae) for amino acid geochronology Quat. Geochronol. (IF 2.7) Pub Date : 2023-09-29 Chloë Baldreki, Andrew Burnham, Martina Conti, Lucy Wheeler, Michael J. Simms, Lawrence Barham, Tom S. White, Kirsty Penkman
Aragonitic calcium carbonate (CaCO3) terrestrial mollusc shells with complex shell microstructures, such as those in the African subfamily Achatininae, have the potential to be used to build amino acid geochronologies across the African continent. However, as different microstructural shell layers are likely to have different protein compositions, sampling strategies need to be developed to identify
-
Towards the optically stimulated luminescence dating of unheated flint Quat. Geochronol. (IF 2.7) Pub Date : 2023-09-28 L. Ageby, J. Shanmugavel, M. Jain, A.S. Murray, E.F. Rades
Flint tools are important archaeological finds, but unheated specimens remain challenging to date. The optical luminescence properties of the microcrystalline flint differ from sedimentary quartz grains, and optically stimulated luminescence (OSL) has, therefore, only occasionally been used to date heated flint specimens. However, if OSL dating could be used on unheated samples, this should expand
-
Constraining the minimum age of Daraki-Chattan rock art in India by OSL dating and petrographic analyses Quat. Geochronol. (IF 2.7) Pub Date : 2023-09-26 Georgios S. Polymeris, Ioannis Liritzis, Ioannis Iliopoulos, Vayia Xanthopoulou, Robert G. Bednarik, Giriraj Kumar, Asimina Vafiadou
Ongoing work in Daraki-Chattan cave, India, has revealed important Paleolithic rock art (petroglyphs) in the form of cupules. The site is rich in stone tools of Acheulian industry to Oldowan-like industry including several hammerstones. The present investigation concerns a further detailed methodological and complementary approach for dating a quartz-arenite sandstone clast from just above the lowest
-
Distinguishing Type I and II errors in statistical tree-ring dating Quat. Geochronol. (IF 2.7) Pub Date : 2023-09-22 Samuli Helama
-
Applicability of using portable luminescence reader for rapid age-assessments of dune accumulation in the Thar desert, India Quat. Geochronol. (IF 2.7) Pub Date : 2023-08-21 Shashank Nitundil, Abi Stone, Aayush Srivastava
Reconstructing dunefield-scale palaeoenvironmental histories is important, particularly in the context of understanding the complexity of dune development under future climate and land use changes in the densely populated Thar Desert, India. Dunefield-scale investigations with sufficient sampling resolution to provide insights into the spatio-temporal variations in dune accumulation history are time
-
Testing the potential of pulsed post-IR IRSL dating on Chinese loess deposits Quat. Geochronol. (IF 2.7) Pub Date : 2023-08-15 Junjie Zhang, Sumiko Tsukamoto, Hao Long
The post-infrared infrared stimulated luminescence (post-IR IRSL; pIRIR) of feldspar, measured at an elevated temperature (e.g., 290 °C) following an initial IRSL measurement at 50 °C, has demonstrated minimal to no fading. However, these higher temperature pIRIR signals are less easily to reset by sunlight. A pulsed pIRIR signal measured at a relatively low temperature (e.g., 150, 225 °C) might be
-
Constraining the eruption history of Rangitoto volcano, New Zealand, using palaeomagnetic data Quat. Geochronol. (IF 2.7) Pub Date : 2023-07-31 Megan L. Allington, Andreas Nilsson, Mimi J. Hill, Neil Suttie, Dimitra Daniil, Ingeborg Hjorth, Linda Aulin, Paul C. Augustinus, Phil Shane
New Zealand's largest city, Auckland, is situated within the basaltic Auckland Volcanic Field (AVF). Therefore, understanding the eruption history of the local volcanoes in the field is of great importance in order to assess future hazards that they may pose. Rangitoto is the youngest and largest volcano in the AVF, although the timing of the first eruption and the duration of the volcanic activity
-
Combined unspiked K–Ar and 40Ar/39Ar dating applied to the dating of 80–260 ka old Icelandic sub-glacial rhyolites Quat. Geochronol. (IF 2.7) Pub Date : 2023-07-15
We have used two techniques (i.e. K–Ar and 40Ar/39Ar) on Icelandic obsidian samples to produce and more specially to estimate the quality and accuracy of the ages that can be obtained. Following a meticulous protocol, we were able to date six rhyolitic eruptions with an accuracy 7 to 40 times better than those obtained previously. Among these six rhyolites are the first published K–Ar and 40Ar/39Ar
-
Meteoric 10Be speciation in subglacial sediments of East Antarctica Quat. Geochronol. (IF 2.7) Pub Date : 2023-07-14
A sequential chemical extraction procedure was developed and tested to investigate the utility of meteoric 10Be as a tracer for authigenic mineral formation beneath the East Antarctic Ice Sheet. Subglacial meltwater is widely available under the Antarctic Ice Sheet and dissolved gases within it have the potential to drive chemical weathering processes in the subglacial environment. Meteoric 10Be is
-
Reliable radiocarbon dating of fossil pollen grains: It is truly possible Quat. Geochronol. (IF 2.7) Pub Date : 2023-07-08 Takayuki Omori, Keitaro Yamada, Ikuko Kitaba, Tatsuo Hori, Takeshi Nakagawa
Radiocarbon dating of fossil pollen concentrates has the potential to reduce limitations for sample selection in chronological studies of sedimentary archives. The recent development of the technology for rapidly preparing highly purified fossil pollen concentrates using a cell sorter makes it realistic to turn this dream into reality. Before utilizing pollen as a material for dating with confidence
-
Reply to the comments by Dr. Janusz Olszak on “Luminescence chronology of the Sankosh river terraces in the Assam–Buthan foothills of the Himalayas: Implications to climate and tectonics” by Quaternary Geochronology 72, 101364 Quat. Geochronol. (IF 2.7) Pub Date : 2023-07-13 Belligraham Narzary, Atul K. Singh, Sribas Malik, , Manoj K. Jaiswal
Abstract not available
-
A Bayesian hierarchical age model for optical dating of single grains of quartz Quat. Geochronol. (IF 2.7) Pub Date : 2023-06-22 Bo Li, Zenobia Jacobs, Richard G. Roberts
In optical dating, the last time that a sample of sediment was exposed to sunlight is determined by dividing its equivalent dose (De) by the dose rate. For single-grain dating, the sample De is based on the statistical analysis of the distribution of De values estimated for individual grains, whereas the dose rate is usually determined from measurements of the environmental radioactivity of the bulk
-
Comment on “Luminescence chronology of the Sankosh river terraces in the Assam–Buthan foothills of the Himalayas: Implications to climate and tectonics” by Quaternary Geochronology 72, 101364 Quat. Geochronol. (IF 2.7) Pub Date : 2023-06-22 Janusz Olszak
In a study of which the main objective was to assess the impact of climate change and tectonics on the formation of river terraces along the Sankosh River, the eastern foreland of the Himalayas, the authors obtained geochrono-logical data using luminescence technique. Four strath river terraces (T4–T1) were distinguished within the valley bottom, and alluvial sediments from three terraces (T4, T2 and
-
-
High-resolution ∼55 ka paleomagnetic record of Biển Hồ maar lake sediment from Vietnam in relation to detailed 14C and 137Cs geochronologies Quat. Geochronol. (IF 2.7) Pub Date : 2023-06-03 Antti E.K. Ojala, Hướng Nguyễn-Văn, Ingmar Unkel, Dương Nguyễn-Thùy, Thái Nguyễn-Đình, Quốc Đỗ-Trọng, Chunqing Sun, Peter E. Sauer, Arndt Schimmelmann
Vietnam's Central Highlands in Pleiku feature numerous volcanic craters (i.e. maars) formed over 0.2 Ma ago that contain continuous high-resolution lacustrine sediment records extending from the Late Pleistocene through the Holocene. Their evolution and sedimentary proxies are potentially powerful archives for interpretation of East-Asian monsoon variability across Vietnam, as well as for local to
-
Chronology analysis of huge landslide based on ESR dating materials on sliding face in carbonate areas of south eastern Tibet Quat. Geochronol. (IF 2.7) Pub Date : 2023-05-24 Chun-Ru Liu, Ying-Ying Tian, Hao Ji, Xi Ma, Chuan-Yi Wei, Jia-Xiang Dang, Gong-Ming Yin, Yong-Sheng Zhou, Ren-Mao Yuan
Determining occurrence age is key to chronology analysis of huge landslides. However, in carbonated bedrock areas, it is difficult to carry out geochronological surveys of landslide evolution due to lack of suitable dating materials and methods. In carbonated bedrock areas, the cosmic nuclides 36Cl and 14C dating methods have been used for obtaining the exposed age of bedrock. But intense weathering
-
A quantitative assessment of snow shielding effects on surface exposure dating from a western North American 10Be data compilation Quat. Geochronol. (IF 2.7) Pub Date : 2023-03-31 Shan Ye, Joshua K. Cuzzone, Shaun A. Marcott, Joseph M. Licciardi, Dylan J. Ward, Jakob Heyman, Daven P. Quinn
To better assess the spatiotemporal variations of the snow shielding effect on surface exposure dating, we compiled a dataset of 1341 10Be ages from alpine moraines and glacially eroded valleys across western North America, and conducted a sensitivity test with both modern and time-integrated snow data covering the same region. Our analyses reveal significant differences in snow shielding both across
-
Optimizing radiocarbon chronologies in peat profiles with examples from Xinjiang, China Quat. Geochronol. (IF 2.7) Pub Date : 2023-04-05 Haiyan Zhao, Weijian Zhou, Peng Cheng, Hua Du, Feng Xian, Xuefeng Lu, Peixian Shu, Guocheng Dong
Reliable chronological frameworks are crucial to paleoenvironmental studies, and high precision 14C dating is the foundation, but many factors, such as dating materials, surficial deposition (influenced by nuclear bomb), and the 14C age plateau, will affect the reliability of the 14C ages and chronology frameworks. In this paper, we present 87 14C dates of different peat fractions from three peat sites
-
Progress and pitfalls of the SAR protocol for the quartz violet stimulated luminescence (VSL) signal: A case study from Sardinia Quat. Geochronol. (IF 2.7) Pub Date : 2023-03-09 Neda Rahimzadeh, Sumiko Tsukamoto, Christine Thiel, Manfred Frechen
In the quest for extending the upper age limit of optically stimulated luminescence (OSL) dating of quartz, it was shown that violet stimulated luminescence (VSL) may be a promising candidate. However, difficulties in the application of the single aliquot regenerative dose (SAR) protocol for VSL has been reported in previous studies. In this study, a set of experiments was carried out to investigate
-
Timing and seismic origin of the historic Luanshibao rock avalanche in the Maoyaba basin, SE Tibetan Plateau: New evidence from 10Be exposure-ages Quat. Geochronol. (IF 2.7) Pub Date : 2023-02-16 Jiangtao Wang, Weijian Zhou, Guocheng Dong, Feng Xian, Yunchong Fu, Li Zhang, Ling Tang, Pengkai Ding, Guoqing Zhao
Rock avalanche is one of the most notable geological disasters in the mountain areas, such as the southeastern Tibetan Plateau. A typical one therein is the Luanshibao (LSB) rock avalanche that occurred in the Maoyaba basin. This rock avalanche has attracted a great deal of attentions, as it has a potential threat to the construction of Sichuan-Tibet Railway. It has been widely accepted that the LSB
-
Using microcomputed tomography (μCT) to count varves in lake sediment sequences: Application to Lake Sagtjernet, Eastern Norway Quat. Geochronol. (IF 2.7) Pub Date : 2023-02-20 Eirik G. Ballo, Manon Bajard, Eivind Støren, Jostein Bakke
Varved lake sediments are one of the most important natural archives that allow annual resolution paleoclimate reconstructions. Conventional varve counting techniques use thin sections to manually identify lamina. However, this technique is destructive, labour intensive and limited to a 2D representation of complex 3D features which may lead to misidentification of varve boundaries. This study presents
-
Cosmogenic nuclide burial dating at Penhill Farm: An Earlier Stone Age Acheulean locality in the lower Sundays River Valley, South Africa Quat. Geochronol. (IF 2.7) Pub Date : 2023-02-16 Matt G. Lotter, Kathleen Kuman, Darryl E. Granger
Penhill Farm is an Earlier Stone Age (ESA) Acheulean archaeological site located within the southeastern Cape coastal region of South Africa. Although ESA artifacts have been known for this region since the 1950s, limited archaeological work and an inability to date the terrace context sites have prevented understanding the technological progression from the ESA to Middle Stone Age (MSA) and their
-
A simulation approach to quantify the parameters and limitations of the radiocarbon wiggle-match dating technique Quat. Geochronol. (IF 2.7) Pub Date : 2023-02-07 Liam McDonald, Sturt W. Manning
Worldwide, radiocarbon (14C) wiggle-match dating is increasingly used to produce high-resolution, ‘near-absolute’, chronologies in a range of different contexts, yet the exact properties and limitations of the technique are not well understood. Here we present the results of extensive and systematic simulations that allow the precision limits of wiggle-match dating to be quantified for different time
-
Quartz OSL sensitivity from dating data for provenance analysis of pleistocene and holocene fluvial sediments from lowland Amazonia Quat. Geochronol. (IF 2.7) Pub Date : 2023-01-26 Priscila E. Souza, Fabiano N. Pupim, Carlos E.M. Mazoca, Ian del Río, Thays D. Mineli, Fernanda C.G. Rodrigues, Naomi Porat, Gelvam A. Hartmann, André O. Sawakuchi
The properties of the quartz luminescence signal have been shown to be a useful tool for sediment provenance analysis. These provenance studies are based on the sensitivity of the fast optically stimulated luminescence (OSL) component, which is also used for sediment dating. Besides the widespread occurrence of quartz in terrigenous sediments, OSL sensitivity can be acquired using relatively fast and
-
P–PINI: A cosmogenic nuclide burial dating method for landscapes undergoing non-steady erosion Quat. Geochronol. (IF 2.7) Pub Date : 2022-12-10 Jesper Nørgaard, John D. Jansen, Stephanie Neuhuber, Zsófia Ruszkiczay-Rüdiger, Mads Faurschou Knudsen
Existing methods of cosmogenic nuclide burial dating perform well provided that sediment sources undergo steady rates of erosion and the samples experience continuous exposure to cosmic rays. These premises exert important limitations on the applicability of the methods. And yet, high mountain sediment sources are rife with transient processes, such as non-steady erosion by glacial quarrying and/or
-
Evidences of the Blake and Iceland Basin magnetic excursions in southeastern Iberia and chronological implications for the Padul sedimentary record Quat. Geochronol. (IF 2.7) Pub Date : 2022-12-07 Luis Valero, Antonio García-Alix, Gonzalo Jiménez-Moreno, Jon Camuera, Alejandro López-Avilés, María J. Ramos-Román, Francisco J. Jiménez-Espejo, Elisabet Beamud, Estefanía Maestre, R. Scott Anderson
The Padul-15-05 sediment core provides an exceptional perspective of the paleoenvironmental and climate change in the Western Mediterranean region for the last ca. 200 kyr. However, even though a robust chronology mainly relying on radiometric dating is available for the last 50 ka, the chronology for the older sediments is not yet fully resolved. Ages for the bottom part of the core (>21 m) were previously
-
Early diagenetic imprints and U–Th isotope systematics of fossil land snail shells from the Chinese Loess Plateau Quat. Geochronol. (IF 2.7) Pub Date : 2022-11-26 Tao Li, Tianyu Chen, Laura F. Robinson, Maoyu Wang, Gaojun Li, Yuanyuan Liu, Timothy D.J. Knowles
The loess-paleosol sequence on the Chinese Loess Plateau provides a unique archive that records climate change in East Asia in the Quaternary, yet absolute dating of the loess deposits is challenging due to the lack of directly datable materials. Fossil land snail shells, which are made from aragonite, are widely preserved in the loess deposits and have long been used to reconstruct past environmental
-
Accurate chronological construction for two young stalagmites from the tropical South Pacific Quat. Geochronol. (IF 2.7) Pub Date : 2022-11-23 Mohammadali Faraji, Silvia Frisia, Quan Hua, Andrea Borsato, Monika Markowska
Modern to Holocene tropical Pacific stalagmites are commonly difficult to date with the U-series, the most commonly used dating method for speleothems. When U-series does not provide robust age models, due to multiple sources of 230Th or little U, radiocarbon is, potentially, the best alternative. The 14C content of two stalagmites (Pu17 and Nu16) collected from Pouatea and Nurau caves in the Cook
-
Statistically coherent approach involving log-ratio transformation of geochemical data enabled tephra correlations of two late Pleistocene tephra from the eastern Adriatic shelf Quat. Geochronol. (IF 2.7) Pub Date : 2022-11-26 Ivan Razum, Nikolina Ilijanić, Maurizio Petrelli, Vera Pawlowsky-Glahn, Slobodan Miko, Piotr Moska, Biagio Giaccio
Tephrostratigraphic correlations commonly rely on geochemical composition supported by additional constraints (e.g., multiple stratigraphically ordered tephra, geochronological-stratigraphical constraints, and isotopic determinations), which provide key clues to restrict the number of possible candidates and disambiguate the correlation of a specific tephra among compositionally similar volcanic sources/tephra
-
A universal approach to alpha-cellulose extraction for radiocarbon analysis of 14C-free to post-bomb ages Quat. Geochronol. (IF 2.7) Pub Date : 2022-11-25 Guaciara M. Santos, Anita S.Y. Komatsu, Jazmine M. Renteria, Arno F.N. Brandes, Christopher A. Leong, Silvana Collado-Fabbri, Ricardo De Pol-Holz
In order to expand our in-house capabilities for tree-ring 14C measurements in support of atmospheric 14C reconstruction research, we designed a very versatile and inclusive procedure to produce high-quality α-cellulose homogenized extracts. The procedure can be easily scaled up or down (≤10 to 40 samples) and/or modified on demand (chemical steps can be easily adjusted to sample requirements as well
-
Maximized erosion at the last glacial maximum revealed by thermoluminescence thermochronometry Quat. Geochronol. (IF 2.7) Pub Date : 2022-10-21 Nadja F. Stalder, Rabiul H. Biswas, Frédéric Herman
Increased erosion rates during the last 2 Myr of Earth history are commonly associated with widespread glaciation and global cooling. However, whether erosion rates actually increased during that period of time remains debated. This is in part because the respective role of fluvial and glacial erosion is difficult to assess, and because many existing techniques used to estimate erosion rates may be
-
Rock surface and sand-sized sediment quartz dating using optically stimulated luminescence of a Middle-to-Upper Palaeolithic sequence at the Bordes-Fitte rock shelter (Les Roches d’Abilly, Central France) Quat. Geochronol. (IF 2.7) Pub Date : 2022-10-13 Trine H. Freiesleben, Kristina J. Thomsen, Andrew S. Murray, Reza Sohbati, Mayank Jain, Søren Hvidt, Bo Jakobsen, Thierry Aubry
In this study, we use optically stimulated luminescence (OSL) to establish a robust absolute chronology for the lower part of the stratigraphic record at “Les Roches d’Abilly”, an important Palaeolithic site in Central France. There, lithic assemblages recording the Middle-to-Upper Palaeolithic transition and the behaviour of Neanderthal and Anatomically Modern Human populations are preserved. At the
-
16th International Conference on Luminescence and Electron Spin Resonance Dating, 13–17 September 2021 Quat. Geochronol. (IF 2.7) Pub Date : 2022-09-11 Frank Preusser, Naomi Porat, Lee Arnold, Regina de Witt, Mathieu Duval, Christophe Falgueres, Gloria Lopez, Tony Reimann, Liping Zhou
Abstract not available
-
Clean quartz matters for cosmogenic nuclide analyses: An exploration of the importance of sample purity using the CRONUS-N reference material Quat. Geochronol. (IF 2.7) Pub Date : 2022-09-15 Lee B. Corbett, Paul R. Bierman, Thomas A. Brown, Marc W. Caffee, David Fink, Stewart P.H.T. Freeman, Alan J. Hidy, Dylan H. Rood, Klaus M. Wilcken, Thomas E. Woodruff
Reference materials are key for assessing inter-laboratory variability and measurement quality, and for placing analytical uncertainty bounds on sample analyses. Here, we investigate four years of data resulting from repeated processing of the CRONUS-N reference material for cosmogenic 10Be and 26Al analyses. At University of Vermont, we prepared a CRONUS-N aliquot with most of our sample batches from
-
Comparison of 14C and 210Pb - 137Cs - 241Am dating methods of a recent bat guano deposit (Lot, SW France) Quat. Geochronol. (IF 2.7) Pub Date : 2022-09-06 Michel Condomines, Ilham Bentaleb, Eleni Filaiti, Aloïs Robert, Claude Milhas
Bat guano deposits are increasingly used as records of past environmental changes, an approach that requires a precise chronology of the guano layers. This paper presents a comparison between the well-established 14C dating method and methods based on natural 210Pb excesses, (210Pb)ex, and artificial radionuclides 137Cs and 241Am. The studied example is a bat guano deposit from a cave in SW France