Quaternary Science Reviews最新文献

{"title":"Quantitative pollen reconstruction of temperature and precipitation in the subtropical-temperate climate transition zone of East-Central China since the Last Glacial Maximum","authors":"Yao Zhang ,&nbsp;Qiaoyu Cui ,&nbsp;Chen Liang ,&nbsp;Zhiyuan Wang ,&nbsp;Fuzhi Lu ,&nbsp;Yi Lin ,&nbsp;Lin Chen ,&nbsp;Aifeng Zhou","doi":"10.1016/j.quascirev.2025.109528","DOIUrl":"10.1016/j.quascirev.2025.109528","url":null,"abstract":"<div><div>The evolution of the East Asian Summer Monsoon (EASM) under global warming remains uncertain, and the spatiotemporal pattern of the EASM is an ongoing debate. Here, we quantitatively reconstruct high-resolution temperature and precipitation sequences since the Last Glacial Maximum (LGM) by applying the weighted averaging partial least squares (WAPLS) model to the pollen record from Daye Lake in the Taibai Mountains, the main peak of the Qinling Mountain Range. The results show a distinct vegetation succession: the transition from coniferous forest to coniferous-broadleaf mixed forest, and ultimately to deciduous broadleaf forest, with a progressive increase in open land coverage during the late Holocene. The climate during the LGM was characterized by approximately 4 °C lower temperature and about 300 mm less precipitation compared to the Holocene, and then the temperature and precipitation continuously increased from the late deglacial to the early Holocene, reaching the maximum (temperature of 9.9 °C; precipitation of 940 mm) in the mid-Holocene. This warm and humid phase was followed by a cooling and drying trend in the late Holocene. A synthesis of hydrological and temperature records demonstrates that the reconstructed temperature changes were consistent with other temperature records from both the EASM domain and the broader Northern Hemisphere, reflecting a regional signal. However, the reconstructed precipitation data revealed distinct patterns specific to the Qinling region: precipitation changes during the last deglacial period exhibited a homological pattern with records from southern China, while aligning closely with the trends observed in northern China over the Holocene. Millennial-scale precipitation changes during the 16–12 cal kyr BP were modulated by the Atlantic Meridional Overturning Circulation (AMOC) and the Kuroshio Current (KC) intensity. The north-south precipitation dipole pattern in the Holocene is linked to the positions of the Intertropical Convergence Zone (ITCZ), which are modulated by El Niño–Southern Oscillation (ENSO) activity. Both pollen-based reconstructed climate results using the WAPLS model from Daye Lake and CMIP6 multi-model ensemble simulations in the Qinling region suggest that future precipitation will likely increase with rising temperatures, providing critical insights into the response of the EASM to ongoing global warming.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"367 ","pages":"Article 109528"},"PeriodicalIF":3.2,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144687011","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Paleoclimatic implications of the Tatra Mountains in Central Europe during MIS 9–6 based on multiproxy speleothem records","authors":"Marcin Błaszczyk,&nbsp;Jacek Pawlak,&nbsp;Helena Hercman","doi":"10.1016/j.quascirev.2025.109544","DOIUrl":"10.1016/j.quascirev.2025.109544","url":null,"abstract":"<div><div>This study presents a synthesis of recent paleoenvironmental studies conducted in the Tatra Mountains and the Low Tatras. The results of petrographic studies, stalagmite oxygen and carbon isotope data, and trace element variability of previously published speleothem data, together with new material, were presented in the context of other European paleoclimatic records. These results provide novel insights into crucial issues concerning the potential role of the Tatra massif as an orographic barrier. Our study highlights the unique potential of high-elevation speleothems as a valuable archive for investigating the influence of high mountain ranges on atmospheric circulation and movement, which could contribute to climate change. Simultaneously, the differences identified in the speleothem proxy on the northern slopes of the Tatras and those located in the Low Tatra Mountains reflect the relatively high importance of the entire Carpathians and other orogenic belts, such as the Alps, in differentiating the climate and, consequently, speleothem records.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"367 ","pages":"Article 109544"},"PeriodicalIF":3.2,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144680056","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Southwestern United States Altithermal Interval (9.5–7 ka): Longest dry period of the Holocene","authors":"Victor J. Polyak ,&nbsp;Holly C. Olivarez ,&nbsp;Felipe S. Rojas Vilches ,&nbsp;Laura Calabrò ,&nbsp;David A. Giovannetti-Nazario ,&nbsp;Matthew S. Lachniet ,&nbsp;Yemane Asmerom","doi":"10.1016/j.quascirev.2025.109533","DOIUrl":"10.1016/j.quascirev.2025.109533","url":null,"abstract":"<div><div>The global Altithermal Interval, the warm Holocene climatic optimum after the Last Glacial Maximum that lasted several millennia (11-5 ka), is a likely analog for future climatic conditions forced by Anthropocene global warming. Regional studies of this period globally are essential for improving the climate models that will help in our understanding of Earth's rapidly changing climate. The southwestern United States (SW USA) experienced a regional Altithermal that remains to be sufficiently characterized. We show evidence for Altithermal dryness from coralloidal stalagmite growth from two New Mexico stalagmites, and a hiatus of speleothem growth defined by multiple stalagmites from 9.5 to 7 ka. Further, we present novel speleothem climate proxies that we qualitatively link to higher aridity and temperature during this ∼2500-year period, which we define as the SW USA Altithermal Interval. We hypothesize that during the global Altithermal the two principal oceanic subtropical high-pressure systems in the North Pacific and North Atlantic were strengthened and contributed to persistent arid conditions throughout the SW USA during peak summer insolation.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"367 ","pages":"Article 109533"},"PeriodicalIF":3.2,"publicationDate":"2025-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144672168","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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 RSL constraints for the Minch from OSL-dated Lateglacial shorelines","authors":"Emily Huffman ,&nbsp;Alexander R. Simms ,&nbsp;Tom Bradwell ,&nbsp;Louise Best ,&nbsp;Jeremy M. Lloyd ,&nbsp;Sarah L. Bradley ,&nbsp;Regina DeWitt","doi":"10.1016/j.quascirev.2025.109543","DOIUrl":"10.1016/j.quascirev.2025.109543","url":null,"abstract":"<div><div>Past sea levels provide important constraints on global ice volumes, rates of tectonic motion, ice-sheet sea-level feedbacks, and the migration of species through time. Beneath formerly glaciated regions, the marine limit, the maximum extent of sea-levels after glacial retreat, provides some of the oldest post-Last Glacial Maximum (LGM) sea-level constraints. However, although the elevations of marine limits are plentiful, they often remain undated. In this study, we provide new age and elevation constraints on the late Pleistocene relative sea-level (RSL) history at 12 sites along the eastern flanks of the former Minch Ice Stream (MnIS) of northwest Scotland. Optically stimulated luminescence (OSL) was used to date the highest and presumably oldest preserved RSL indicators immediately after ice-sheet retreat. Although slightly older than earlier estimates, our ages confirm the early deglacial age of ∼16.2–19.5 ka for the raised shorelines of northwest Scotland with declining marine limits north of the Isle of Skye from 26.2 ± 4.8 m at Ardaneaskan to 12.8 ± 4.8 m elevation at Achiltibuie, the latter of which lies inside the moraines of the Wester Ross Readvance. Our new OSL ages suggest deglaciation of the MnIS may have been slightly earlier than previously thought, although our large error bars highlight the need for additional age constraints. Our new RSL data provide important constraints for Glacial Isostatic Adjustment (GIA) models for Scotland and shed light on the behavior of the former MnIS, thought to be susceptible to marine ice-sheet instability.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"367 ","pages":"Article 109543"},"PeriodicalIF":3.2,"publicationDate":"2025-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144672169","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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 mammal assemblage from last interglacial in Argentine Pampas: Debating biostratigraphic and biochronological reliability","authors":"Jonathan Bellinzoni ,&nbsp;Ricardo Bonini ,&nbsp;Sara García-Morato ,&nbsp;Gustavo N. Gómez ,&nbsp;Pamela Steffan ,&nbsp;María Dolores Marín-Monfort ,&nbsp;Alfredo Zurita ,&nbsp;Francisco Cuadrelli ,&nbsp;Francisco J. Prevosti ,&nbsp;Fernando J. Fernández ,&nbsp;Cristian Favier-Dubois ,&nbsp;Daniel J. Rafuse ,&nbsp;María Teresa Alberdi ,&nbsp;Yolanda Fernandez-Jalvo ,&nbsp;José L. Prado","doi":"10.1016/j.quascirev.2025.109511","DOIUrl":"10.1016/j.quascirev.2025.109511","url":null,"abstract":"<div><div>This study analyzes one of the most complete mammalian fossil records from the Middle to the end of the Pleistocene in the Pampean Region, recovered from the Salto de Piedra Paleontological Locality along Tapalqué Creek. The site preserves a fluvial-palustrine sequence with six depositional units (U1–U6), separated by erosive unconformities or pedogenetic horizons. Radiometric dating (OSL and AMS ¹⁴C), integrated with sedimentological and faunal data, allows correlation with Marine Isotope Stages: Unit 1 (MIS 6–5; &gt;127 ka), Unit 2 (MIS 3; ∼40.5 ka), Units 3–4 (MIS 2; 38–11.2 ka), and Units 5–6 (MIS 1; 12.6–7.8 ka). Three fossil assemblages were identified (U1, U3–4, U5–6), primarily linked to fluvial channels. The record provides critical biochronological information, with fossils showing minimal weathering and abrasion, and no evidence of reworking. The occurrence of <em>Equus neogeus</em> in U1 (&gt;127 ka) expands the lower limit of its biozone back to ∼300 ka. Index taxa in Unit 1—<em>Glyptodon munizi</em>, <em>Megatherium americanum</em>, <em>Equus neogeus</em>—highlight biozone overlap, challenging the stratigraphic resolution of traditional schemes. Due to the lack of exclusive taxa and overlapping ages, we propose merging the Bonaerean with the Lujanian Stage/Age (∼300–11.6 ka). These findings call for a revision of Quaternary biozone frameworks in South America and improve biostratigraphic resolution for the Pampean fossil record.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"367 ","pages":"Article 109511"},"PeriodicalIF":3.2,"publicationDate":"2025-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144672167","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Late Quaternary variability in sediment residence time and provenance in the Gulf of Carpentaria, northern Australia","authors":"Anthony Dosseto ,&nbsp;Ashley N. Martin ,&nbsp;Jan-Hendrik May ,&nbsp;Les Kinsley ,&nbsp;Inna Karatchevtseva ,&nbsp;Allan R. Chivas","doi":"10.1016/j.quascirev.2025.109529","DOIUrl":"10.1016/j.quascirev.2025.109529","url":null,"abstract":"<div><div>Uranium (U) isotopes in detrital marine sediments provide a means to estimate sediment residence time—the duration particles spend in the landscape prior to deposition. When paired with physical parameters such as specific surface area, these data offer insight into sediment sourcing and transport processes. Here, we apply comminution dating to two sediment cores from the Gulf of Carpentaria (GoC), spanning the past 120 ka. Residence times were calculated using a Monte Carlo simulation under two scenarios: with and without post-depositional ²³⁴U recoil loss. The latter produced geologically consistent results, ranging from ∼5 to 38 ka, while the former yielded mostly unrealistic (negative) values.</div><div>Core MD972132, dominated by northern catchments, exhibits significantly shorter residence times (mean = 12.6 ka) than MD972133 (mean = 24.4 ka), reflecting faster sediment routing or reduced alluvial storage. Temporal trends suggest longer residence times during MIS 3, coinciding with regional aridity and limited fluvial connectivity, and shorter residence times post-LGM as sediment delivery increased with monsoonal intensification. Principal component analysis and clustering further differentiate sediment provenance between cores. Our results show that U-isotope-based residence time estimates, when integrated with sedimentological data, can resolve sediment routing dynamics in large tropical catchments and track climate-driven shifts in source–sink connectivity over glacial–interglacial cycles.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"366 ","pages":"Article 109529"},"PeriodicalIF":3.2,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144655824","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Environmental changes in Hudson Strait and cultural transition in the Kangiqsujuaq region, Nunavik, Canada","authors":"Bianca Fréchette ,&nbsp;Anne de Vernal ,&nbsp;Natasha Roy ,&nbsp;Elsa Cencig ,&nbsp;Susan Lofthouse ,&nbsp;André Rochon ,&nbsp;Matthias Moros","doi":"10.1016/j.quascirev.2025.109506","DOIUrl":"10.1016/j.quascirev.2025.109506","url":null,"abstract":"<div><div>A record of marine (dinoflagellate cysts) and terrestrial (pollen grains) palynomorphs combined with geochemical (organic C, C_org:N_tot) and isotopic (δ¹³C_org) data from a sediment core collected in Hudson Strait close to Kangiqsujuaq provides evidence of past climatic and hydrographic changes in northern Nunavik since 4000 years ago with a multidecadal temporal resolution. A significant transition is recorded around 1850 cal yr BP. In the dinocyst assemblages, it is characterised by a sharp increase in heterotrophic taxa at the expense of the cysts of <em>Pentapharsodinium dalei</em>; in the pollen assemblage, it is marked by a change in the ratio between <em>Picea</em> and <em>Pinus</em>, with <em>Pinus</em> becoming more abundant after 1850 cal yr BP. Reconstructions of sea-surface conditions based on dinocyst assemblages show a long-term cooling trend and increased seasonal sea-ice cover over the last 4000 years. The results also showed an overall increase in summer salinity, the isotopic composition of organic carbon (δ¹³C_org), and the organic carbon to total nitrogen ratio (C_org:N_tot), especially after ∼1850 cal yr BP. Such changes suggest a lower proportion of terrestrial sources of sedimentary organic matter, likely induced by an overall decrease in freshwater discharges from the Hudson Bay watershed, thus reducing dilution of ocean waters. The general reduction in the relative imprint of terrestrial inputs in the Hudson Strait may be related to an overall decrease in annual precipitation over the northern boreal forest, which is likely due to the generally colder climate. The Middle Dorset period, from approximately 2000 to 1500 years ago, encompasses the transition towards colder and drier conditions around 1850 cal yr BP. This was a period of southward population movements, possibly driven by the impact of increased sea ice, which hindered access to resources. We thus hypothesise that palaeoenvironmental changes have modified resource distribution, which was critical for the Dorset people as they experienced massive demographic shifts and southward population expansion.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"367 ","pages":"Article 109506"},"PeriodicalIF":3.2,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144672171","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Paired terrestrial cosmogenic nuclides support the mapping of relict polythermal terrains under the Keewatin Ice Divide, central mainland Nunavut, Canada","authors":"Isabelle McMartin ,&nbsp;Pierre-Marc Godbout ,&nbsp;Tommy Tremblay ,&nbsp;John C. Gosse ,&nbsp;Janet E. Campbell ,&nbsp;Martin Roy ,&nbsp;Joerg M. Schaefer ,&nbsp;Iyse Randour","doi":"10.1016/j.quascirev.2025.109505","DOIUrl":"10.1016/j.quascirev.2025.109505","url":null,"abstract":"<div><div>Understanding basal thermal regimes of paleo-ice sheets is fundamental to provide constraints on ice sheet dynamics and geometry, subglacial hydrology and sediment fluxes, landscape evolution, and long-term climate responses. While various methods have characterized glacial terrains from a range of subglacial conditions, the relationship between landsystem mapping and terrestrial cosmogenic nuclides (TCNs) remains largely unexplored. Here, we investigate a continuum of relict polythermal landsystems and surrounding warm-based terrains mapped in areas formerly covered by the Keewatin Ice Divide by utilizing paired ¹⁰Be and ²⁶Al cosmogenic nuclide analyses on bedrock, boulder, and till samples in the eastern Keewatin region of Nunavut, northern Canada. Exposure ages in low-elevation warm-based landscapes cluster at 8.2 ± 0.6 ka and align with the timing of deglaciation (7.7 ± 1 ka) indicating relatively high (deep) glacial erosion under dominantly warm-based conditions. Moderate nuclide abundances and apparent mean ages of 23.5 ± 4.6 ka (surface tills) and 21.8 ± 2.1 ka (bedrock trimlines at marine limit) in relict intermediate landsystems extending across the ice divide migration zone above 200 m elevation reflect moderate erosion during transient cold-based and warm-based conditions. High nuclide abundances and apparent mean ¹⁰Be ages of 53.7 ± 4.6 ka (bedrock and boulder) in relict cold-based landsystems, predominant where the ice divide was anchored in the uplands above 400 m elevation, are consistent with low erosion and persistent cold-based conditions partially preserving surfaces weathered prior to the last glaciation. The apparent exposure ages in the relict terrains, significantly exceeding expected deglacial ages, and the relatively long periods of burial derived from ²⁶Al/¹⁰Be ratios, indicate widespread TCN inheritance and reflect differential erosion under polythermal basal ice regimes as inferred from landsystem mapping. Our findings emphasize the importance of geomorphological mapping and landsystem analysis to inform the TCN sampling plan and highlight the need for caution in interpreting exposure ages within predominantly warm-based glacial landscapes in a core region of the Laurentide Ice Sheet where relict weathered terrains are recognized.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"366 ","pages":"Article 109505"},"PeriodicalIF":3.2,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144655823","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Reconstructing the glacial history of the Bhagirathi catchment in the Garhwal Himalaya from ∼ 80 ka to present","authors":"Elizabeth N. Orr ,&nbsp;Sourav Saha ,&nbsp;Lewis A. Owen ,&nbsp;Sarah J. Hammer ,&nbsp;Marc W. Caffee","doi":"10.1016/j.quascirev.2025.109525","DOIUrl":"10.1016/j.quascirev.2025.109525","url":null,"abstract":"<div><div>A key challenge when evaluating mountain glacier change, particularly in the context of climate change, is that glacial geological research often operates within discrete timescales. Studies typically examine long-term glacier change over centuries to millennia or short-term change spanning days to decades. Bridging these temporal gaps is essential for refining projections of glacier mass loss and enhancing our understanding of the future of mountain glaciers, particularly in regions like the Himalayas. The closely monitored Gangotri Glacier in the Bhagirathi catchment of the Garhwal Himalaya provides an excellent opportunity to define the timing and drivers of late Quaternary glacier change from ∼80 ka to present. By integrating new and recalculated glacial geochronological datasets with instrumental and remote sensing data, we present a comprehensive glacial chronostratigraphy for the Bhagirathi catchment. Tracking of the glacier terminus position and equilibrium-line altitudes over the past ∼80 ka shows that Gangotri Glacier has been progressively retreating during this time. We provide strong evidence that Gangotri Glacier is sensitive to short- and long-term climate changes. The accelerated retreat in recent decades is likely driven by climate change-induced shifts in global temperature and precipitation patterns. This study highlights the importance of evaluating glacier change across multiple timescales, as this has enabled us to more confidently conclude that the retreat of mountain glaciers such as Gangotri Glacier will continue and possibly accelerate in response to ongoing climate change.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"366 ","pages":"Article 109525"},"PeriodicalIF":3.2,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144633214","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mobility, circulation and long-distance transport of exotic raw materials in South America: Records of Patagonian obsidian points in Uruguay","authors":"Rafael Suárez ,&nbsp;Mariela Pistón ,&nbsp;María Julia Melián ,&nbsp;Javier Silva ,&nbsp;Ricardo Faccio ,&nbsp;James A. Davenport ,&nbsp;Maria E. Arbiza ,&nbsp;Michael D. Glascock","doi":"10.1016/j.quascirev.2025.109510","DOIUrl":"10.1016/j.quascirev.2025.109510","url":null,"abstract":"<div><div>This paper reviews the different archaeological sites of Pampa where there are obsidian records and presents the results of the geochemical and technological analysis of two obsidian projectile points recovered from the Middle Negro River, Uruguay. Using X-ray fluorescence (XRF), two distinct sources were identified: Cerro de las Planicies/Lago Lolog (CP/LL1) and Telsen/Sierra Negra (T/SN1), both located in north and central Patagonia, approximately 1600 km from the study area. The results suggest that obsidian points transported to Uruguay exceed previous records of distances recorded for South America and are in the range of the greatest distances in the world. The technological and morphological features of the points suggest different trajectories of transport, chronology, use and curation. This contributes to broader discussions on long-distance interactions, technological organization, the social and symbolic significance of exotic raw materials in the prehistoric societies of southeastern South America.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"366 ","pages":"Article 109510"},"PeriodicalIF":3.2,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144633213","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}