Quaternary International最新文献

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The late Pliocene spatial distributions of proto-Mu Us sand fields margin indicated from the spatial grain size variation of aeolian sediments in the Chinese loess Plateau 从黄土高原风成沉积物的空间粒度变化,揭示了原毛乌素沙场边缘晚上新世的空间分布
IF 1.8 3区 地球科学
Quaternary International Pub Date : 2026-03-15 Epub Date: 2026-01-13 DOI: 10.1016/j.quaint.2026.110125
Mengying Wu , Hanzhi Zhang , Huayu Lu , Jian Yu , Yang Chen , Chen Chen , Jingjing Wang
{"title":"The late Pliocene spatial distributions of proto-Mu Us sand fields margin indicated from the spatial grain size variation of aeolian sediments in the Chinese loess Plateau","authors":"Mengying Wu ,&nbsp;Hanzhi Zhang ,&nbsp;Huayu Lu ,&nbsp;Jian Yu ,&nbsp;Yang Chen ,&nbsp;Chen Chen ,&nbsp;Jingjing Wang","doi":"10.1016/j.quaint.2026.110125","DOIUrl":"10.1016/j.quaint.2026.110125","url":null,"abstract":"<div><div>The evolution of deserts is sensitive to climate changes. However, the trends and evolutionary processes of deserts under global warming remain controversial. The late Pliocene serves as a climatic analog for future conditions. Therefore, reconstructions of desert distributions during this period can provide a valuable historical reference frame for predicting the evolution of deserts under future warming scenarios. Aeolian depositional sequences on the Chinese Loess Plateau (CLP), located at the down-wind direction of the desert, serve as a direct record of desert expansion and contraction. Previous reconstructions relied on the relationship of the grain-size patterns on the Chinese Loess Plateau and the desert margin position during the Last Glacial Maximum. In contrast, we propose a new model based on Holocene desert margin and loess grain-size distribution, and apply it to reconstruct desert margins during the Pliocene warm period. Our new results show that, during the late Pliocene, the southern margin of the proto-Mu Us sand fields was approximately 260 km north of the modern boundary. This study suggests that, in the absence of human disturbance, deserts in northern China may contract under future global warming.</div></div>","PeriodicalId":49644,"journal":{"name":"Quaternary International","volume":"758 ","pages":"Article 110125"},"PeriodicalIF":1.8,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145980475","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Bones, barcodes, and biodiversity: Optimising bulk bone metabarcoding analysis for tropical subfossil collections from Polynesia 骨骼、条形码和生物多样性:优化波利尼西亚热带亚化石收集的大量骨骼元条形码分析
IF 1.8 3区 地球科学
Quaternary International Pub Date : 2026-03-15 Epub Date: 2026-01-12 DOI: 10.1016/j.quaint.2025.110099
Patricia Pillay , Natalie dos Remedios , William S. Pearman , Anna W. Santure , Melinda S. Allen
{"title":"Bones, barcodes, and biodiversity: Optimising bulk bone metabarcoding analysis for tropical subfossil collections from Polynesia","authors":"Patricia Pillay ,&nbsp;Natalie dos Remedios ,&nbsp;William S. Pearman ,&nbsp;Anna W. Santure ,&nbsp;Melinda S. Allen","doi":"10.1016/j.quaint.2025.110099","DOIUrl":"10.1016/j.quaint.2025.110099","url":null,"abstract":"<div><div>Molecular techniques offer powerful complementary tools for determining the taxonomic identity of fragmented, morphologically non-diagnostic, or otherwise taxonomically indeterminant bone from archaeological and palaeontological contexts. This study focuses on the recovery and identification of ancient DNA (aDNA) from tropical subfossil bone assemblages. Materials from multiple archaeological sites spread across three valleys on Nuku Hiva (Marquesas Islands) in the cultural historical region of East Polynesia are used as a case study. We illustrate how aDNA sampling strategies, laboratory protocols, PCR primer selection, and sequencing methods can be optimised to improve the recovery and taxonomic identification of aDNA from tropical subfossil samples. Sanger sequencing was initially employed as a preliminary approach to assess the quality of aDNA samples. Subsequently, a high-throughput technique, bulk bone metabarcoding (BBM), was utilised for pooled specimens to recover and sequence taxonomically diagnostic ‘barcoding’ regions of DNA. To ensure robust identifications, we constructed a custom reference database tailored to our genetic markers and developed a novel decision tree framework to assign each aDNA sequence to a well-supported taxonomic level. Our application of rigorous bioinformatic tools enabled us to quantify the ability of our genetic markers to identify taxa, and provided a replicable framework for subsequent taxonomic identifications. Our BBM analyses detected a wide range of vertebrate taxa, including birds, fish, mammals, and reptiles. Here we use the archaeological seabird results to illustrate the efficacy of BBM and the outcomes of our iterative approach to enhance aDNA recovery and taxonomic identification. Our analyses provide the first well-dated pre-Western avifaunal records for Nuku Hiva Island, including three seabird taxa that are new to the wider archaeological record of the Marquesas Islands of Polynesia.</div></div>","PeriodicalId":49644,"journal":{"name":"Quaternary International","volume":"758 ","pages":"Article 110099"},"PeriodicalIF":1.8,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145980473","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Environmental change in SW Portugal during the last 3900 years BP: an Ostracoda assessment 近3900年来葡萄牙西南部的环境变化:介形类评估
IF 1.8 3区 地球科学
Quaternary International Pub Date : 2026-03-15 Epub Date: 2026-01-10 DOI: 10.1016/j.quaint.2025.110114
Maria João Fernandes Martins , Maria Cristina Cabral , Vitor Hugo Magalhães , Teresa Drago , Francisco Fatela , Anabela Oliveira
{"title":"Environmental change in SW Portugal during the last 3900 years BP: an Ostracoda assessment","authors":"Maria João Fernandes Martins ,&nbsp;Maria Cristina Cabral ,&nbsp;Vitor Hugo Magalhães ,&nbsp;Teresa Drago ,&nbsp;Francisco Fatela ,&nbsp;Anabela Oliveira","doi":"10.1016/j.quaint.2025.110114","DOIUrl":"10.1016/j.quaint.2025.110114","url":null,"abstract":"<div><div>Ostracod, geochemical, mineralogical, and sedimentological proxies from a sediment core collected off Sagres (southwestern Portugal) were used to reconstruct Holocene environmental and hydrodynamic changes.</div><div>Reduced variability of geochemical elements between ∼4000 and ∼1290 calibrated years before present suggests relatively stable conditions, regularly disturbed by higher-energy events. At ∼1290 cal yrs BP, a transition from arid to wetter conditions is suggested based on enhanced terrestrial/detrital input after this time. Ostracod assemblages further captured fine-scale hydrodynamic variability, offering greater sensitivity to oceanographic changes.</div><div>Our results support a broader pattern of middle-to-late Holocene drying conditions in southern Iberia, followed by a shift to wetter conditions during periods of negative North Atlantic Oscillation (NAO) index. Our study provides new data on offshore ostracods from the western Algarve, underscoring their value for high-resolution paleoenvironmental reconstructions.</div></div>","PeriodicalId":49644,"journal":{"name":"Quaternary International","volume":"758 ","pages":"Article 110114"},"PeriodicalIF":1.8,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145941311","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Quaternary cold-climate hillslope processes, landforms and deposits in the Polish medium-altitude mountains – state-of-the-art and research perspectives 波兰中海拔山脉的第四纪冷气候山坡过程、地貌和沉积物——最新技术和研究前景
IF 1.8 3区 地球科学
Quaternary International Pub Date : 2026-03-15 Epub Date: 2026-01-17 DOI: 10.1016/j.quaint.2026.110128
Piotr Migoń , Jarosław Waroszewski
{"title":"Quaternary cold-climate hillslope processes, landforms and deposits in the Polish medium-altitude mountains – state-of-the-art and research perspectives","authors":"Piotr Migoń ,&nbsp;Jarosław Waroszewski","doi":"10.1016/j.quaint.2026.110128","DOIUrl":"10.1016/j.quaint.2026.110128","url":null,"abstract":"<div><div>Poland has a long history of research aimed at deciphering periglacial inheritance in hillslope morphology of medium-altitude mountains which occur in the southern part of the country (the Sudetes, the Carpathians, the highest parts of the Świętokrzyskie Mountains). Its onset is marked by the seminal publications by Walery Łoziński from the beginning of the 20th century, in which the very term ‘periglacial’ was proposed for the first time. This paper is primarily intended as a review and serves a few specific aims. First, it provides an overview of several key themes in periglacial research such as the origin and significance of bedrock crags, the evidence of cryoplanation, the geomorphic history of blockfields and blockstreams, including the discussion of main controlling factors, a possible occurrence of rock glaciers, and the origin and significance of stacked hillslope deposits, including superimposed soils. Second, the efficacy of periglacial processes is evaluated using various lines of evidence, including dating based on cosmogenic nuclides and optically stimulated luminescence. Then, the discussion is shifted to a question whether all landforms and deposits once considered as the periglacial legacy are indeed causally linked with cold-climate environments. Specific themes addressed are the role of catastrophic wind-related events and shallow mass movements in reshaping hillslope morphology, the contemporary activity of scree slopes in the forest belt, and the renewal of regolith production in the Holocene. Finally, a comparison of periglacial landform inventories in mountain regions of contrasting lithology (basement versus flysch rocks) is offered to identify the role of rock control, whereas the most important research gaps are outlined at the end.</div></div>","PeriodicalId":49644,"journal":{"name":"Quaternary International","volume":"758 ","pages":"Article 110128"},"PeriodicalIF":1.8,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145980476","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The small mammal fauna (Marsupialia and Rodentia) from Araras ravine, a Quaternary deposit in northeastern Brazil, and their paleoclimatic significance for South American paleoenvironments 巴西东北部第四纪Araras峡谷小型哺乳动物区系(有袋目和啮齿目)及其对南美古环境的古气候意义
IF 1.8 3区 地球科学
Quaternary International Pub Date : 2026-03-01 Epub Date: 2026-02-04 DOI: 10.1016/j.quaint.2025.110085
Simone Baes das Neves , João Paulo da Costa , Maria Eduarda Pereira Mello de Carvalho Ventura , Julia Pinheiro do Nascimento , Kleberson de Oliveira Porpino , Hermínio Ismael de Araújo-Júnior
{"title":"The small mammal fauna (Marsupialia and Rodentia) from Araras ravine, a Quaternary deposit in northeastern Brazil, and their paleoclimatic significance for South American paleoenvironments","authors":"Simone Baes das Neves ,&nbsp;João Paulo da Costa ,&nbsp;Maria Eduarda Pereira Mello de Carvalho Ventura ,&nbsp;Julia Pinheiro do Nascimento ,&nbsp;Kleberson de Oliveira Porpino ,&nbsp;Hermínio Ismael de Araújo-Júnior","doi":"10.1016/j.quaint.2025.110085","DOIUrl":"10.1016/j.quaint.2025.110085","url":null,"abstract":"<div><div>Quaternary fossil faunas in intertropical South America, especially small- and large-sized mammals as well as other vertebrates, provide consistent evidence of past environmental conditions. Fossils of small mammals are commonly found in karstic environments, such as caves and natural sinks, which act as both refuges for preservation and sediment traps for surrounding skeletal material. The state of Rio Grande do Norte, with its natural sinks and karst formations, is notable for preserving fossil-rich Quaternary deposits, exemplified by the Lajedo de Soledade site. Here, we target small mammals fossil remains from the Lajedo de Soledade site to reconstruct past environments. We identified and described 99 fossils, among rodents and marsupials, collected in three sedimentary layers in the Araras Ravine, part of the karstic deposits of the Lajedo de Soledade site. We identified <em>Monodelphis domestica</em>, <em>Gracilinanus</em> sp., <em>Galea</em> sp., <em>Kerodon</em> sp., <em>Thrichomys</em> sp., Sigmodontinae gen. et sp. indet., <em>Necromys</em> sp., <em>Holochilus</em> sp., <em>Oligoryzomys</em> sp., <em>Calomys</em> sp., and <em>Wiedomys</em> sp. The distribution across the different layers of Lajedo de Soledade site highlights differences in abundance and composition. For example, Layer B showed higher taxonomic diversity and humid-adapted taxa, whereas Layer C is dominated by species adapted to drier conditions. These represent the first small mammal fossils described for Lajedo de Soledade and provide essential evidence for reconstructing quaternary environmental dynamics in Rio Grande do Norte. It also reinforces the potential of Quaternary deposits to reveal the biogeographical history of mammalian groups, particularly during the Quaternary.</div></div>","PeriodicalId":49644,"journal":{"name":"Quaternary International","volume":"757 ","pages":"Article 110085"},"PeriodicalIF":1.8,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146189447","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Living in a karstic spring: humans, animals, and sediments at Zala Cave (northern-central Croatia) during the Late Glacial and Early Holocene 生活在喀喇泉:人类、动物和沉积物在Zala洞穴(克罗地亚中北部)在冰川晚期和全新世早期
IF 1.8 3区 地球科学
Quaternary International Pub Date : 2026-03-01 Epub Date: 2026-01-02 DOI: 10.1016/j.quaint.2025.110100
Katarina Gerometta , Giovanni Boschian , Ivor Karavanić
{"title":"Living in a karstic spring: humans, animals, and sediments at Zala Cave (northern-central Croatia) during the Late Glacial and Early Holocene","authors":"Katarina Gerometta ,&nbsp;Giovanni Boschian ,&nbsp;Ivor Karavanić","doi":"10.1016/j.quaint.2025.110100","DOIUrl":"10.1016/j.quaint.2025.110100","url":null,"abstract":"<div><div>This study presents a geoarchaeological investigation of Zala Cave, located in northwestern Croatia, a site of exceptional significance due to its position in a key geographical corridor between the Adriatic coast and the continental Balkans, a region largely lacking comparable sequences. The cave provides rare evidence of human occupation spanning from the Late Upper Palaeolithic through the Middle Ages. Geoarchaeological, sedimentological, and micromorphological analyses of the cave deposits elucidate the interplay between human occupation, sedimentary processes, and environmental change in a karstic landscape strongly influenced by subterranean hydrology. The stratigraphic sequence documents alternating phases of fluvial sedimentation, frost-related reworking, and human use of the cave. The mineral composition of the deposits, dominated by siliciclastic grains derived from distant Triassic formations and possibly reworked loess, confirms the cave's hydrological connection to external catchments. Sediment architecture reveals periodic flooding from the underground Đulin Ponor–Medvedica–Izvor-Špilja Gojak cave system, which repeatedly transformed the cave into a spring outlet. Periodical erosion and redeposition of sediments generated gaps and mixed layers within the cultural succession, and disrupted the stratigraphic continuity. Epigravettian layers reveal short-term occupation episodes by Late Upper Palaeolithic foragers, while an <em>in situ</em> Mesolithic hearth attests to later visits during more temperate conditions. Sporadic Copper and Bronze Age activity reflects shifting land-use strategies, mostly pastoral. The absence of Neolithic layers and remains hints to possible erosional removal of the Neolithic horizon. Micromorphological evidence of periglacial structures, combustion features, and dung accumulations, demonstrates subsequent and/or alternating phases of cold-climate sedimentation, dwelling, and pastoral use. Overall, Zala Cave represents a key inland node linking the Adriatic and continental Balkans, offering new insights into human mobility, environmental adaptation, and the geomorphic evolution of a karstic corridor during Late Pleistocene–Holocene climatic transitions.</div></div>","PeriodicalId":49644,"journal":{"name":"Quaternary International","volume":"757 ","pages":"Article 110100"},"PeriodicalIF":1.8,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145886070","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Late Quaternary climate reconstruction using multiproxy approach and mathematical techniques 基于多代理方法和数学技术的晚第四纪气候重建
IF 1.8 3区 地球科学
Quaternary International Pub Date : 2026-03-01 Epub Date: 2026-01-10 DOI: 10.1016/j.quaint.2025.110097
Upasana S Banerji , Chandra Prakash Dubey , Laxmi Pandey , Md Firoze Quamar , Kumar Batuk Joshi
{"title":"Late Quaternary climate reconstruction using multiproxy approach and mathematical techniques","authors":"Upasana S Banerji ,&nbsp;Chandra Prakash Dubey ,&nbsp;Laxmi Pandey ,&nbsp;Md Firoze Quamar ,&nbsp;Kumar Batuk Joshi","doi":"10.1016/j.quaint.2025.110097","DOIUrl":"10.1016/j.quaint.2025.110097","url":null,"abstract":"","PeriodicalId":49644,"journal":{"name":"Quaternary International","volume":"757 ","pages":"Article 110097"},"PeriodicalIF":1.8,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145940551","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Multidirectional processing of mammalian remains by the Neanderthals from the Ciemna Cave, Main Chamber (southern Poland) 西埃姆纳洞穴(波兰南部)主室尼安德特人对哺乳动物遗骸的多向加工
IF 1.8 3区 地球科学
Quaternary International Pub Date : 2026-03-01 Epub Date: 2026-01-08 DOI: 10.1016/j.quaint.2025.110084
Katarzyna Zarzecka-Szubińska , Adrian Marciszak , Grzegorz Lipecki , Paweł Valde-Nowak , Krzysztof Sobczyk , Piotr Wojtal , Damian Stefański
{"title":"Multidirectional processing of mammalian remains by the Neanderthals from the Ciemna Cave, Main Chamber (southern Poland)","authors":"Katarzyna Zarzecka-Szubińska ,&nbsp;Adrian Marciszak ,&nbsp;Grzegorz Lipecki ,&nbsp;Paweł Valde-Nowak ,&nbsp;Krzysztof Sobczyk ,&nbsp;Piotr Wojtal ,&nbsp;Damian Stefański","doi":"10.1016/j.quaint.2025.110084","DOIUrl":"10.1016/j.quaint.2025.110084","url":null,"abstract":"<div><div>Ciemna Cave is a key site for studying Neanderthal settlement north of the Carpathians. This extensive cave system has so far been mostly known for its essential contribution to the study of Neanderthal culture. Local subsistence strategies were previously inferred mainly from highly fragmented and poorly preserved bone remains from the Ogrójec – the open part of the system. These collections provided only limited evidence of human activity, primarily in the form of burnt bones. The osteological material recovered during the ongoing project in the Main Chamber of Ciemna Cave is much better preserved and provides insight into the diverse activities of Neanderthals. These include carcass processing, fire use, and the production and maintenance of stone tools. Combined with taphonomic data, including evidence of animal activity, these findings allow us to reconstruct the dynamics of Neanderthal occupation in the cave from the end of MIS 6 until MIS 3. This article presents new evidence of Neanderthal lifeways which, together with data on lithic technology and the frequency of various taphonomic traces, contributes to an increasingly nuanced understanding of Neanderthal spatial organization and behavior.</div></div>","PeriodicalId":49644,"journal":{"name":"Quaternary International","volume":"757 ","pages":"Article 110084"},"PeriodicalIF":1.8,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145940550","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Optical dating of Holocene extreme flood events in eastern South Africa and their connection to ENSO variability 南非东部全新世极端洪水事件的光学定年及其与ENSO变率的关系
IF 1.8 3区 地球科学
Quaternary International Pub Date : 2026-03-01 Epub Date: 2026-01-06 DOI: 10.1016/j.quaint.2025.110101
Jamie C. Wood , Phillip S. Toms , Michael C. Grenfell , Marc S. Humphries
{"title":"Optical dating of Holocene extreme flood events in eastern South Africa and their connection to ENSO variability","authors":"Jamie C. Wood ,&nbsp;Phillip S. Toms ,&nbsp;Michael C. Grenfell ,&nbsp;Marc S. Humphries","doi":"10.1016/j.quaint.2025.110101","DOIUrl":"10.1016/j.quaint.2025.110101","url":null,"abstract":"<div><div>Existing research examining tributary blocked-valley lake and wetland development upon the Mfolozi River floodplain (South African east coast) has highlighted the potential for blocked-valley lakes to act as mainstem palaeoflood archives. Sand and silt units preserved within the organic deposits of these floodplain-impounded features represent relatively large flood events and provide an opportunity to establish the frequency of extreme flooding in the region beyond the timespan of instrumental and historical records, thereby helping to reduce uncertainty around future tropical cyclone activity in a warming world. However, absolute age estimates for these sequences have been limited to radiocarbon dating of organic units, restricting flood history reconstruction. This study had two inter-related aims. Firstly, to evaluate the use of optically stimulated luminescence (OSL) dating for chronicling clastic sediments associated with the floodplain's blocked-valley lakes. Secondly, in combination with radiocarbon dating and Bayesian age-depth modelling, to reconstruct flood history across three sites on the Mfolozi floodplain and investigate the climatic factors that drove past extreme flooding in the region. The Finite Mixture Model (FMM) applied to single grain OSL data was identified as the most suitable equivalent dose (D<sub>e</sub>) model, producing age estimates that either aligned with historical records and/or accounted for the largest population of grains with a common dose. The deposition models developed provide evidence for the occurrence of multiple extreme floods since the first event identified at 7.2 ka, providing the first long-term flood record for the region. Comparison of the Mfolozi palaeoflood record with independent sedimentary hydroclimatic evidence from the region indicates a historical tendency for more frequent extreme floods during weakened El Niño conditions (i.e., La Niña or neutral ENSO phases). This suggests that variations in ENSO conditions through the mid-to-late Holocene likely played a fundamental role in triggering extreme flooding along South Africa's east coast.</div></div>","PeriodicalId":49644,"journal":{"name":"Quaternary International","volume":"757 ","pages":"Article 110101"},"PeriodicalIF":1.8,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145940549","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Re-evaluation of the spatiotemporal distribution of large explosive eruptions in Japan during Middle Pleistocene to Holocene: Tephra correlations and accurate age constraints from the deep-sea sedimentary record (Chikyu C9001C cores) 日本中更新世至全新世大爆发时空分布的再评价:深海沉积记录(Chikyu C9001C岩心)的Tephra对比和精确年龄约束
IF 1.8 3区 地球科学
Quaternary International Pub Date : 2026-02-28 Epub Date: 2026-01-09 DOI: 10.1016/j.quaint.2025.110104
Yausaki Kaneda , Takeshi Hasegawa , Makoto Okada , Nobutatsu Mochizuki , Festus Tongwa Aka
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