Quaternary Geochronology最新文献

{"title":"Electron spin resonance signals of historical lime mortars: Towards ESR dating of anthropogenic carbonates","authors":"Zuzanna Kabacińska ,&nbsp;Danuta Michalska","doi":"10.1016/j.quageo.2026.101724","DOIUrl":"10.1016/j.quageo.2026.101724","url":null,"abstract":"<div><div>Anthropogenic carbonates such as lime mortars and plasters have been receiving growing attention as they are an invaluable source of information for archaeologists, conservators, and restorers of cultural heritage. Taking into account the production process, the age of mortars reflects the age of the building. Two physical dating methods currently enable us to date mortars: radiocarbon (¹⁴C) dating and optically stimulated luminescence (OSL), however both are not yet considered routine, due to a number of limitations.</div><div>In this study we present the Electron Spin Resonance (ESR) analysis of historical lime mortars, as a first part of the ongoing project focused on establishing ESR as a method of dating anthropogenic carbonates in a form of lime binders. Since carbonate crystals are formed during the mortar production, this moment can be regarded as the zero point for the accumulation of trapped charges, and their concentration in a measured sample should reflect the age of the mortar.</div><div>We investigated ESR signals in natural and laboratory-irradiated lime binders from several different archaeological sites, with ages ranging from about 2800 to 500 years old. The samples have been previously dated by radiocarbon method, which means they had undergone extensive characterisation and preparation, ensuring the selection of binder, which reflects the true age of the mortar. Since the samples were originally collected for radiocarbon dating no data on the annual doses was available, hence the goal of this work is a qualitative analysis of the signals found in a variety of mortars, assessing their potential suitability for dating. Despite the relatively young age of the investigated samples for ESR dating, measurable signals were detected in natural materials. With the aid of ESR simulations, signals commonly found in carbonates, such as CO₂⁻ isotropic and orthorhombic, CO₃⁻ orthorhombic, NO₃²⁻ and NO₂²⁻, SO₂⁻ isotropic, SO₃⁻ axial and isotropic, surface defect caused by crushing, organic radical, as well as a signal caused by pyrolysis of organic matter, were identified in the laboratory irradiated samples. As there are almost no examples of ESR dating of Holocene carbonates, lime binders present an exciting opportunity to push forward the boundaries of ESR dating, which has great implications for Quaternary geology, and historical archaeology.</div></div>","PeriodicalId":54516,"journal":{"name":"Quaternary Geochronology","volume":"92 ","pages":"Article 101724"},"PeriodicalIF":2.5,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145978750","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Radiocarbon offsets between organic carbon and carbonates: implications for Holocene paleoceanographic reconstructions in the Cabo Frio upwelling system","authors":"Milena Ceccopieri ,&nbsp;Douglas V.O. Lessa ,&nbsp;Ana L.S. Albuquerque ,&nbsp;Cristiano M. Chiessi ,&nbsp;Gesine Mollenhauer","doi":"10.1016/j.quageo.2025.101722","DOIUrl":"10.1016/j.quageo.2025.101722","url":null,"abstract":"<div><div>Understanding the temporal relationship between carbon pools in marine sediments is essential for reliable paleoenvironmental reconstructions, yet ¹⁴C-age discrepancies between organic and carbonate fractions remain poorly constrained. Here, we present the first assessment of the ¹⁴C-age offset between organic carbon (OC) and planktonic foraminifera from co-occurring stratigraphic layers of the Cabo Frio upwelling system (CFUS, off southeastern Brazil) over the past 5.8 kyr. Conventional ¹⁴C ages of the OC are, on average, 643 ± 186 yr older than those of co-occurring foraminifera, likely reflecting long-term storage and winnowing of organic matter (OM) on the mid-shelf driven by local upwelling-related hydrodynamic processes. Higher OC apparent initial ¹⁴C-ages (AIR_OC) coincide with periods of intensified upwelling and stronger bottom currents, which prolong OC residence time before burial, and greater delivery of pre-aged terrestrial OM. Conversely, reduced AIR_OC corresponds to weaker hydrodynamic conditions and higher sedimentation rates that promote more rapid OC deposition. The new carbonate-based chronology developed for the investigated core revises the timing of Holocene paleoceanographic changes previously inferred from OC-based age models. Intensified South Atlantic Central Water (SACW) upwelling in the mid-shelf now aligns with the mid-Holocene sea-level highstand, while the development of stronger stratification and reduced SACW penetration occurs entirely within the late Holocene. The establishment of modern upwelling conditions shifted to younger ages, improving consistency with wider-scale climate phenomena and regional NE-wind variability. These results refine the temporal and mechanistic interpretation of Holocene variability in the CFUS and underscore the importance of multi-fraction ¹⁴C dating in dynamic coastal upwelling systems.</div></div>","PeriodicalId":54516,"journal":{"name":"Quaternary Geochronology","volume":"92 ","pages":"Article 101722"},"PeriodicalIF":2.5,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145939808","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High-resolution luminescence chronology for the late Holocene loess at the northern piedmont of Kunlun Mountains in arid central Asia and its paleoenvironmental implications","authors":"Lisha Wu ,&nbsp;Linhai Yang ,&nbsp;Jibao Dong ,&nbsp;Jun Peng ,&nbsp;Jingran Zhang ,&nbsp;Peng Cheng","doi":"10.1016/j.quageo.2026.101725","DOIUrl":"10.1016/j.quageo.2026.101725","url":null,"abstract":"<div><div>A robust chronological framework for loess deposits in arid central Asia (ACA) is critical to paleoenvironmental reconstruction in this region. Some research used different dating methods to cross-validate the age determinations. However, age discrepancies between radiocarbon (¹⁴C) and luminescence dating for the same section have been increasingly revealed, which have cast doubt on the reliability of these two methods in ACA. Specifically, during the late Holocene, comparative analyses of these two methods in this region remains less investigated. In this study, we dated the BST loess section at the northern piedmont of Kunlun Mountains in ACA, using the post-infrared infrared stimulated luminescence (pIRIR) signal of both medium-grained (38–63 μm) and coarse-grained (63–100 μm) K-feldspar mineral. The reliability of the dating procedures and results was verified through standard internal checks and evaluation criteria. The results show that the luminescence ages of the medium and coarse grains are basically consistent, and both are in excellent agreement with the published ¹⁴C ages of charcoals. In addition, the stable carbon isotope of organic matter (δ¹³C_org) of BST loess section was measured to infer the moisture variations. Our study suggests that (1) Loess of the BST section deposited since the late Holocene (∼3.6 ka), with the dust accumulation rate (DAR) substantially higher than that of loess elsewhere; (2) Humidity of this region gradually increased since∼2 ka as reflected by δ¹³C_org; (3) Luminescence dating methods are highly valuable for providing age control for late Holocene loess in ACA.</div></div>","PeriodicalId":54516,"journal":{"name":"Quaternary Geochronology","volume":"92 ","pages":"Article 101725"},"PeriodicalIF":2.5,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146038229","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"On the performance of radiocarbon and quartz OSL dating in macrotidal estuarine environments: Four case studies from Western France","authors":"T. Lortie ,&nbsp;J.-P. Buylaert ,&nbsp;M. Fruergaard ,&nbsp;B. Tessier ,&nbsp;M. Mojtahid ,&nbsp;M. Durand ,&nbsp;R. Bourillot ,&nbsp;F. Eynaud ,&nbsp;N. Taratunina ,&nbsp;L. Dezileau","doi":"10.1016/j.quageo.2025.101723","DOIUrl":"10.1016/j.quageo.2025.101723","url":null,"abstract":"<div><div>The study of estuarine sedimentary archives provides valuable insights into their geomorphological evolution over the past two centuries, enhancing our understanding of estuarine responses to climate change. Establishing a reliable and precise geochronological framework is therefore essential for monitoring these changes. This study evaluates the performance of quartz Single-Aliquot Regenerative (SAR) OSL and AMS ¹⁴C dating in four estuaries along the western coast of France. The results are compared with cartographic data, serving as an independent age control. Of the 14 OSL dated samples, 10 yield depositional ages consistent with cartographic data, whereas the remaining 4 appear to overestimate ages by 20–100 years. In contrast, AMS ¹⁴C dating reveals numerous stratigraphic inversions, with at least 12 out of the 16 measured samples overestimating the depositional age in some cases by up to 5000 years, in total disagreement with cartographic data. The discrepancy between the OSL and radiocarbon ages reflects the constant reworking of allochthonous material, to which is added the further uncertainty associated with the local reservoir age. These factors fundamentally limit the reliability of ¹⁴C dating regardless of the material analyzed. By contrast, the OSL signal displays remarkable resilience, with any age overestimation linked to partial bleaching remaining minor (on the order of decades) compared with the errors affecting ¹⁴C ages. This underscores the capacity of OSL dating to resolve short-term environmental changes and positions it as the most reliable tool for constructing high-resolution chronologies of the last centuries in macrotidal estuarine settings.</div></div>","PeriodicalId":54516,"journal":{"name":"Quaternary Geochronology","volume":"92 ","pages":"Article 101723"},"PeriodicalIF":2.5,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145939807","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Luminescence chronology of the Velika Vrbica loess-palaeosol sequence (Wallachian Basin): Evaluating quartz and K-feldspar signals from MIS 5 to the Holocene","authors":"Zoran M. Perić ,&nbsp;Cathal S. Ryan ,&nbsp;Milica G. Bosnić ,&nbsp;Petar Krsmanović ,&nbsp;Warren Thompson ,&nbsp;Helena Alexanderson ,&nbsp;Slobodan B. Marković","doi":"10.1016/j.quageo.2026.101726","DOIUrl":"10.1016/j.quageo.2026.101726","url":null,"abstract":"<div><div>The Velika Vrbica loess-palaeosol sequence, situated on the south-western bank of the Danube River in north-eastern Serbia, represents one of the key Quaternary records in the lower Danube basin, covering the MIS 5-MIS 1 period. Previous investigations of the upper 500 cm established a high-resolution chronology and revealed unexpected patterns of dust accumulation during interstadial phases. In this study, we extend the analysis to the full ∼12 m thickness of the sequence, spanning from Marine Isotope Stage (MIS) 5 to the Holocene, with emphasis on refining the geochronological framework and testing the performance of different luminescence signals. A comprehensive set of quartz optically stimulated luminescence (OSL) and K-feldspar post-infrared infrared stimulated luminescence (pIRIR₂₉₀) ages, complemented by linear modulated OSL (LM-OSL) analyses, provides a robust chronology. Bayesian age-depth modelling constrains the timing of key stratigraphic units, including the S1 palaeosol (MIS 5), the overlying L1 loess (MIS 4–2) with its interstadial palaeosol (L1SS1), and the Holocene soil (S0). Quartz and K-feldspar ages display systematic differences: younger deposits show feldspar overestimation consistent with incomplete bleaching, whereas older horizons (MIS 5–4) yield excellent agreement between the two signals. LM-OSL results confirm that the fast component dominates most of the profile, supporting the reliability of equivalent dose determinations across multiple stratigraphic units. The resulting chronology demonstrates that the Velika Vrbica site preserves a continuous record of loess accumulation and pedogenesis over the last ∼130 ka. These findings not only refine the temporal framework for south-eastern European loess but also provide an important evaluation of the applicability and limitations of quartz and K-feldspar luminescence signals in establishing long-term chronologies.</div></div>","PeriodicalId":54516,"journal":{"name":"Quaternary Geochronology","volume":"92 ","pages":"Article 101726"},"PeriodicalIF":2.5,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146038228","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experimental study on the resetting of IRSL and IRPL signals induced by frictional heating in rocks at seismic slip velocities","authors":"Furong Cui ,&nbsp;Huili Yang ,&nbsp;Jie Chen ,&nbsp;Lu Yao ,&nbsp;Jinfeng Liu ,&nbsp;Jintang Qin ,&nbsp;Myungho Kook ,&nbsp;Sheng-Hua Li","doi":"10.1016/j.quageo.2025.101721","DOIUrl":"10.1016/j.quageo.2025.101721","url":null,"abstract":"<div><div>The challenges in luminescence dating of faulting materials often arise from uncertainties in the extent of signal resetting caused by frictional heating and pressing along the fault. In this study, laboratory friction experiments were performed to simulate the influence of seismic slip rates on rock luminescence signals. High-speed friction generated rapid heating of the frictional interface, with temperatures reaching 500–800 °C. This process effectively reset the infrared-stimulated luminescence (IRSL) signal within the upper ∼1.5 mm of gabbro surfaces, and fully reset the signal up to ∼6 mm inward from surface edges. However, depth information was partly lost because mechanical cutting caused local detachment of thin rock slices. To overcome this limitation, we measured luminescence signals using the Risø luminescence imager, which provides non-destructive and high-resolution IRSL and Infrared Photoluminescence (IRPL) measurements on granite samples. The lack of preheating may preserve some unstable charges and slightly underestimate the resetting ratios. Even so, the patterns are robust. High-speed friction eliminated ∼99 % of IRSL intensities and reset 78 ± 1 % of the IRPL₉₅₅ signals. Low-speed friction reset 83 ± 1 % of the IRSL signals and had only 29 ± 1 % of IRPL₉₅₅ signals. These results confirm that the Risø luminescence imager is highly effective in detecting friction-induced signal resetting. The non-destructive imaging approach preserves depth information and offers higher spatial resolution than measurements on cut rock slices. IRSL and IRPL₉₅₅ signals can potentially constrain the timing of high-velocity seismic slip. Their contrasting responses to different slip conditions may also reflect deformation processes associated with stick-slip and creep, providing additional insight into earthquake behavior.</div></div>","PeriodicalId":54516,"journal":{"name":"Quaternary Geochronology","volume":"92 ","pages":"Article 101721"},"PeriodicalIF":2.5,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145808345","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"New age model for Onepoto maar, Auckland, New Zealand, based on a revised tephrochronology of the lake sediment sequence","authors":"Benjamin Michel Läuchli ,&nbsp;Paul Christian Augustinus ,&nbsp;Jenni Louise Hopkins","doi":"10.1016/j.quageo.2025.101706","DOIUrl":"10.1016/j.quageo.2025.101706","url":null,"abstract":"<div><div>Tephrochronology has proven to be a reliable dating tool in the context of northern New Zealand lakes due to the numerous volcanic centres on the North Island that have repeatedly erupted during the late Quaternary. The widely-distributed tephras often have distinctive geochemical compositions with many of these tephra layers preserved in the sediments that infill maar lakes in the Auckland Volcanic Field (AVF). Here, we present a revised age model for the Onepoto Maar lake sediment sequence, using 14 rhyolitic, seven basaltic, and two andesitic tephra layers with assigned ages as markers. These were integrated with bulk organic matter and pollen-derived radiocarbon ages to establish the new age-depth model. Improvement of the age model for the pre-45 ka section of the Onepoto record was based on the usage of tephras with refined ages: Eg2, Eg4, and Eg10 (Taranaki Maunga-sourced) and AVF D, AVF C, AVF B, and 90 AVF (AVF-sourced). The correlation of the Onepoto tephra horizons to the recently refined, multi-method derived, age model of the Ōrākei maar tephra sequence has improved the robustness of the new Onepoto age model. Consequently, this approach has enabled development of reliable age assignations for tephra layers contained in the Onepoto sediments beyond the limit of ¹⁴C dating. Accurate chronologies for lake sediment sequences, such as the one presented here, are vital for paleoenvironmental research. Thus, the revised Onepoto age model improves upon previous models for our study site, offering more robust age control for regional paleoclimate studies covering the last two glacial cycles. It will also allow the extension of the existing high-resolution paleoenvironmental and paleoclimatic records developed from the AVF maar lakes beyond MIS 5e to at least late MIS 7.</div></div>","PeriodicalId":54516,"journal":{"name":"Quaternary Geochronology","volume":"91 ","pages":"Article 101706"},"PeriodicalIF":2.5,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145159198","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Chronological horizon of Weichselian submoraine organic formation and macrofossil finds with radiocarbon and tree-ring δ18O analyses","authors":"Markku Oinonen ,&nbsp;Laura Arppe ,&nbsp;Joonas Uusitalo ,&nbsp;Samuli Helama ,&nbsp;Pekka Nöjd ,&nbsp;Harri Mäkinen ,&nbsp;Pekka Saranpää ,&nbsp;Kenichiro Mizohata","doi":"10.1016/j.quageo.2025.101712","DOIUrl":"10.1016/j.quageo.2025.101712","url":null,"abstract":"<div><div>Detailed chronological assessment has been performed on a strongly compressed submorainic organic layer found from a river valley in the Lemmenjoki area, Northern Finland, by using ¹⁴C and δ¹⁸O analyses. Clear effect of reworked carbon from above has been observed within the basal part of the layer. The radiocarbon data combined with existing chronological information suggest that the layer was deposited during the Marine Isotope Stage 3 (MIS3), supporting the previously published interpretation. Particularly, most of the dates are indistinguishable from the ¹⁴C background level, indicating their association with the early phase of MIS3 time period. Oxygen isotopic data resembles the data from the last 400 years within the eastern Fennoscandia, suggesting similar growth conditions during the period compared to modern era.</div></div>","PeriodicalId":54516,"journal":{"name":"Quaternary Geochronology","volume":"91 ","pages":"Article 101712"},"PeriodicalIF":2.5,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145519894","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High-resolution 40Ar/39Ar geochronology of the Koobi Fora Tuff Complex, Turkana Basin: Implications for the hominin bearing strata of the Early Pleistocene (1.6–1.4 Ma)","authors":"Ashley Savelkouls,&nbsp;Hayden Dalton,&nbsp;David Phillips","doi":"10.1016/j.quageo.2025.101713","DOIUrl":"10.1016/j.quageo.2025.101713","url":null,"abstract":"<div><div>Volcaniclastic ash deposits (tuffs) within the Turkana Basin in Kenya act as temporal markers to constrain the extensive fossil-rich sediments of the Koobi Fora Formation. By using geochemical fingerprinting and precise geochronology this study improves the temporal and spatial resolution of the Koobi Fora, Lower Koobi Fora and Karari Blue tuffs within the Koobi Fora Tuff Complex. Utilising a Bayesian approach to single-grain anorthoclase ages this study presents ages of 1.49257 ± 0.00186 (2σ) Ma for the Karari Blue Tuff, 1.49430 ± 0.00142 (2σ) Ma for the Koobi Fora Tuff and 1.51561 ± 0.00090 (2σ) Ma for the Lower Koobi Fora Tuff. These results provide highly precise (&lt;0.1 % uncertainties) anchoring ages for the stratigraphy of the Okote Member, implying an older age for the base of the Koobi Fora Tuff Complex (&gt;1.51561 ± 0.00090 Ma). The implications of the ∼30 ka revision of the Lower Koobi Fora Tuff indicates older dates for significant hominin fossil sites in the Ileret (Area 1A) and Koobi Fora (Area 103) regions. The ages of the three tuffs provide the highest precision ages of the Koobi Fora Tuff Complex thus far and have important implications in the Koobi Fora Formation and correlates across the Turkana Basin.</div></div>","PeriodicalId":54516,"journal":{"name":"Quaternary Geochronology","volume":"91 ","pages":"Article 101713"},"PeriodicalIF":2.5,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145617884","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Establishing a high-resolution late Pleistocene to Holocene tephrostratigraphic framework in central Japan using wetland deposit core records: An attempt to detect cryptotephra from terrestrial records in the productive volcanic arc","authors":"Tatsuki I. Watanabe,&nbsp;Takehiko Suzuki,&nbsp;Daisuke Ishimura","doi":"10.1016/j.quageo.2025.101710","DOIUrl":"10.1016/j.quageo.2025.101710","url":null,"abstract":"<div><div>A high-resolution tephrostratigraphic framework focusing on cryptotephra provides a key isochron and the accurate ages of past explosive eruptions in remote regions. The Japanese archipelago has many Quaternary volcanoes, and the tephrochronology using visible tephras of this region has been extensively studied. Research on Lake Suigetsu and other repositories have provided the tephrostratigraphic framework. A detailed cryptotephra study in central Japan can provide correlation to Lake Suigetsu records and strengthens the tephrostratigraphic framework in and around central Japan, but has not been extensively conducted. In this study, we focused on wetland deposits formed in the mountainous regions in central Japan and conducted coring excavation, cryptotephra analysis, fingerprinting, and radiocarbon dating to establish a high-resolution tephrostratigraphic framework. We excavated the Aizu region with late Pleistocene records from the YNH-P1 core and Holocene records from the YNH-P2 core and the Sekita Mountain region with late Pleistocene records from the NNM-P1 core and Holocene records from the CYI-P1 core. Towada-Chuseri, Asama-YKU, Aira-Tn, and Daisen-Kurayoshi tephras were identified in multiple cores, which played an essential role in refining tephrostratigraphy. Tateyama-E tephra, which erupted from the Norikura volcanic chain, was identified for the first time in the Aizu region (YNH-P1 core); it provided important chronological constraints for the north Kanto tephrostratigraphy. Moreover, Myoko-Otagirigawa and Myoko-Akakura tephras from Myoko volcano were accurately dated as 4.4–4.2 and 5.9–5.7 cal ka, respectively, based on tephrostratigraphy and radiocarbon dating. Results showed a more detailed tephrostratigraphic framework in central Japan than those reported in previous studies.</div></div>","PeriodicalId":54516,"journal":{"name":"Quaternary Geochronology","volume":"91 ","pages":"Article 101710"},"PeriodicalIF":2.5,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145325116","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}