Quaternary Science Reviews最新文献

{"title":"Continuous investigation on the response of carbon isotopes of C3 plants to climate change in north China and application in paleoprecipitation reconstruction","authors":"Yutao Zhou ,&nbsp;Jiamao Han ,&nbsp;Guoan Wang ,&nbsp;Minrui Shi ,&nbsp;Wanlin Dong","doi":"10.1016/j.quascirev.2025.109487","DOIUrl":"10.1016/j.quascirev.2025.109487","url":null,"abstract":"<div><div>Interpreting the climate information recorded by carbon isotope composition (δ¹³C) in geological archives aids climatology research and climate prediction. However, this interpretation depends on accurately calibrating modern plant δ¹³C responses to climate change. We here present a long-term calibration conducted at a fixed location adjacent to a meteorological station. By eliminating the effects of geographical variables on C₃ plant δ¹³C, as well as errors arising from inaccuracies in meteorological data, this study yields reliable relationships between δ¹³C and climatic factors. This study demonstrates that precipitation is the predominant factor influencing C₃ plant δ¹³C, accounting for approximately 65 % of the variance in year-averaged δ¹³C for all C₃ plants. The coefficients between year-averaged δ¹³C and annual precipitation, growing season precipitation, and summer precipitation are −0.0039 ‰/mm, −0.0048 ‰/mm, and −0.0040 ‰/mm, respectively. Furthermore, we examined the response pattern of δ¹³C to environmental factors at the species level and observed significant variation in these patterns across different C₃ plant species. This indicates that isotope variation of a single species or a limited number of species cannot adequately reflect regional climate information due to microenvironmental influences. Consequently, only δ¹³C-climate factor conversion equations based on community-level data are appropriate for paleoclimate reconstruction. Finally, we used our δ¹³C-precipitation conversion equation to reconstruct the precipitation in the western Loess Plateau during the last glacial period. This study provides a robust constraint of the response pattern of C₃ plant δ¹³C to environmental factors and develops a refined isotope-precipitation conversion equation for rainfall reconstruction, promoting the application of δ¹³C in paleoclimate research.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"365 ","pages":"Article 109487"},"PeriodicalIF":3.2,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144297804","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 evolution of the Andes east of the North Patagonian Icefield since ∼19.3 ka","authors":"Patricio I. Moreno ,&nbsp;William I. Henríquez ,&nbsp;Rodrigo P. Villa-Martínez","doi":"10.1016/j.quascirev.2025.109467","DOIUrl":"10.1016/j.quascirev.2025.109467","url":null,"abstract":"<div><div>We examine the environmental evolution of the central Patagonian Andes from ∼19.3 ka to the present using lake sediment cores from Valle Chacabuco (∼47°S). Our results reveal the dominance of cold-tolerant herbs and shrubs between ∼19.3 and 11 ka, within which we observe a shift to Poaceae-dominated assemblages and a <em>Pediastrum</em> rise at ∼17.8 ka succeeded by a gradual arboreal rise that started at ∼14.5 ka and culminated with the establishment of <em>Nothofagus</em>-dominated woodlands between ∼9.8–8.8 ka. We interpret modest warming at ∼17.8 ka and ∼12.7 ka and increases in precipitation at ∼17.8 ka and ∼14.5 ka, followed by major warming and a precipitation decline at ∼11 ka that accentuated at ∼8.8 ka. Precipitation increased at ∼7.8 ka and led to the establishment of closed-canopy forests that have persisted with modest but significant fluctuations until recent. We detect abrupt vegetation changes at ∼17.7 ka, ∼12.7 ka, ∼11 ka, and ∼7.8 ka, driven primarily by changes in southern westerly wind (SWW) influence and, secondarily, by intense fire activity. Terrestrial and aquatic ecosystems show pervasive millennial and centennial-scale alternations between warm/dry and cold/wet states since ∼11 ka contemporaneous with glacier fluctuations in nearby Monte San Lorenzo, suggesting recurrent oscillations in SWW influence. Deforestation and spread of non-native plants attest to disturbance by Chilean/European settlers since ∼0.3 ka. Our results and conclusions reinforce the concept that variations in temperature and precipitation related to changes in the position/strength of the SWW underpin millennial/centennial timescales in the biosphere, hydrosphere, and cryosphere at Patagonian, zonal, and hemispheric scales.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"364 ","pages":"Article 109467"},"PeriodicalIF":3.2,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144280778","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":"Vegetation dynamics and land-use history during the Holocene in Corsica (Western Mediterranean): Regional patterns and local landscape transformation in changing coastal ecosystems","authors":"Jordi Revelles ,&nbsp;Ralph Fyfe ,&nbsp;Matthieu Ghilardi ,&nbsp;Andrés Currás ,&nbsp;Federico Di Rita","doi":"10.1016/j.quascirev.2025.109469","DOIUrl":"10.1016/j.quascirev.2025.109469","url":null,"abstract":"<div><div>The archaeoecological research conducted in Corsica underscores the critical role of integrating palynological studies from sedimentary deposits to reconstruct past human-environment interactions. This approach sheds new light on evidence of farming activities and redefines archaeological territories and human occupation temporalities. Understanding the influence of human activities on coastal ecosystems requires outlining natural and climatic dynamics at a regional scale while evaluating landscape transformations at local scale, where human imprints are clearly evidenced. To achieve this, we applied quantitative methodologies to disentangle regional pollen loading from local vegetation signals. The Landscape Reconstruction Algorithm (LRA) was employed as an advanced tool to quantify vegetation cover within the source area of pollen sites, enabling the estimation of the relative abundance of key taxa around pollen sites and distinguishing these from the regional vegetation background. Specifically, the REVEALS and LOVE models were used to reconstruct vegetation history at two spatial scales: regional and local.</div><div>This study reconstructs Holocene vegetation dynamics and human impact in Corsica using quantitative pollen-based models (REVEALS, LOVE) applied to fifteen coastal wetland records and one high-mountain lake. Results reveal that farming activities began around 7400 cal yr BP and intensified during the Roman period, profoundly altering Mediterranean forests and maquis. Coastal landscape evolution was shaped by marine transgression, deltaic progradation, and anthropogenic transformation, with key phases of environmental change aligning with major climatic oscillations and land-use intensification. These findings offer valuable insights into long-term Mediterranean socio-ecological dynamics.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"365 ","pages":"Article 109469"},"PeriodicalIF":3.2,"publicationDate":"2025-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144261887","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 response of coastal lake Huelde, Chile, after tsunami inundation and earthquake-induced subsidence","authors":"Emma P. Hocking ,&nbsp;Philipp Kempf ,&nbsp;Krzysztof Pleskot ,&nbsp;Magdalena Suchora ,&nbsp;Piotr Kołaczek ,&nbsp;Markus Niederstätter ,&nbsp;Jasper Moernaut","doi":"10.1016/j.quascirev.2025.109474","DOIUrl":"10.1016/j.quascirev.2025.109474","url":null,"abstract":"<div><div>With extreme sea-level events, including storms and tsunamis, projected to flood the coastal zone more often over the coming centuries, understanding their impacts is paramount. Whilst immediate impacts are well studied, we know relatively little about how coastal environments recover in the subsequent years and decades after such events. Here we investigate the response and recovery dynamics of the sedimentary system and biological environment to saltwater inundation into a coastal lake on Chiloé Island, northern Chilean Patagonia, from two tsunamis (in 1960 CE and 2670 cal yr BP) and as a consequence of earthquake-induced land-level change. We utilise an existing unique well-dated sediment record from Lake Huelde containing multiple tsunami inundation events, which provides an exceptional sedimentary archive and opportunity to improve understanding of the impacts of marine inundation on freshwater lake ecosystems by re-examining the sediments for new proxies. Analysis of the geochemistry of lacustrine sediments and the biota (algae, aquatic invertebrates and pollen) preserved within them, shows that the sedimentary and ecological responses to two tsunamis in 1960 CE and 2670 cal yr BP differed in nature and timing. We show that biota responded more immediately to the 2670 cal yr BP event, and impacts were longer lasting; saline anoxic bottom water can prevail for decades to centuries post-inundation. We suggest that key drivers of post-tsunami response and recovery are initially the rate of refreshment after saltwater inundation, and over the longer-term, connectivity to the ocean. In an area affected by earthquake-induced land-level changes, these can influence not only the establishment of sustained connection to the ocean, but can also bring the lake ecosystem within reach of storms and spring high tides, which can impact post-tsunami recovery. We therefore suggest that at Lake Huelde, relative sea (land)-level change, and hence tidal connection of the lacustrine system to the ocean, plays a critical role in ecosystem response.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"365 ","pages":"Article 109474"},"PeriodicalIF":3.2,"publicationDate":"2025-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144270484","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":"Quaternary sedimentary evolution and source apportionment in the northwestern South China Sea: Evidence from geochemical and zircon U-Pb data","authors":"Peng-Fei Xiong ,&nbsp;Shu Jiang ,&nbsp;Cong Cheng ,&nbsp;Kai Zhang ,&nbsp;Xiao-Yu Fang ,&nbsp;Tao Jiang ,&nbsp;Jia-Le Fu ,&nbsp;Hong-Ji Liu ,&nbsp;Xin-Rui Zhou ,&nbsp;Xu-Shen Li","doi":"10.1016/j.quascirev.2025.109465","DOIUrl":"10.1016/j.quascirev.2025.109465","url":null,"abstract":"<div><div>The sedimentary basins in the northwestern South China Sea (SCS) preserve crucial records regarding the evolution of the Qinghai-Tibet Plateau and exhibit significant potential as hosts for natural gas hydrate resources. However, the limited availability of Quaternary stratigraphic samples in this region has impeded a more comprehensive understanding of the Quaternary sedimentary evolution within the area. This study integrates new and published detrital zircon U-Pb ages with geochemical analyses to elucidate the provenance and transport pathways of Quaternary sediments in the Qiongdongan Basin (QDNB) in the northwestern SCS, providing new insights into its evolution. Analyses of major and trace elements in Quaternary sediments, along with detrital zircon U-Pb age spectra, indicate that the QDNB primarily received sediment supply from the Red River source, with significant characteristics of the Pearl River source also observed in the eastern and northeastern parts of the basin. The contribution from Hainan Island was limited, even in the northern shelf areas closer to the island. Quantitative analysis reveals a gradual increase in the contribution of the Pearl River source from the western to the eastern deep-water regions of the QDNB, ranging from 46.05 % to 65.74 %. It is inferred that deep currents transport fine-grained sediments, predominantly from the Pearl River source, from the eastern side of the Xisha Trough to the QDNB. However, within the QDNB, the Quaternary sediments are primarily influenced by the Red River source. Topography is the primary factor controlling the large-scale migration of sediments in the northwestern SCS, while ocean currents have a significant impact on the transport of fine-grained sediments. The rapid uplift of the Qinghai-Tibet Plateau during the Quaternary was a primary driver of accelerated sedimentation rates in the northwestern SCS basin. This study elucidates the spatial variations in sediment provenance across different regions of the northwestern SCS, providing crucial geological evidence for understanding the Quaternary sedimentary evolution.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"364 ","pages":"Article 109465"},"PeriodicalIF":3.2,"publicationDate":"2025-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144253629","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":"Contrasting Pacific Decadal Oscillation influence on ice core dust deposition across the Tibetan Plateau","authors":"Cheng Wang ,&nbsp;Lide Tian ,&nbsp;Zhongyin Cai ,&nbsp;Lili Shao ,&nbsp;Ju Huang ,&nbsp;Rong Li ,&nbsp;Chenhao Xu ,&nbsp;Zixiang Zhao","doi":"10.1016/j.quascirev.2025.109461","DOIUrl":"10.1016/j.quascirev.2025.109461","url":null,"abstract":"<div><div>Understanding the spatiotemporal variability of atmospheric dust over the Tibetan Plateau (TP) and its response to large-scale climate patterns is critical for comprehending regional climatic and environmental changes. Here, we present an annually resolved Ca²⁺ concentration record from the Qiangtang No. 1 Glacier spanning 1800–2011 CE to investigate the influence of the Pacific Decadal Oscillation (PDO) on dust deposition in the central TP. Correlation and wavelet analyses demonstrate a significant relationship between the QT Ca²⁺ record and reconstructed PDO indices derived from Asian proxies, with both exhibiting coherent pentadecadal periodicities. Combined with other TP dust records, our analyses reveal that the PDO has a regionally contrasting influence on interdecadal dust variability over the TP. Specially, the PDO exhibits a significant positive correlation with dust concentration records in the central and southern TP, whereas a negative correlation in the northwestern TP. This spatial pattern persists at least over the past millennium, as evidenced by long-term ice core dust records. During the positive PDO phases, intensified aridity in South Asia and enhanced atmospheric transport contribute to elevated atmospheric dust loading over the southern TP, while wetter conditions in Central Asia and weakened westerly circulation likely result in reduced dust level over the northwestern TP. These findings on the PDO's spatially heterogeneous influences offer new insights into how the PDO modulates the long-term dust variability across the TP.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"364 ","pages":"Article 109461"},"PeriodicalIF":3.2,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144242378","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 reconstruction during Marine Isotope Stages 2 and 6 in Southeast Tibet using numerical modelling of glacial flow constrained by imbricated moraines","authors":"Bastien Mathieux ,&nbsp;Anne Replumaz ,&nbsp;Marie-Luce Chevalier","doi":"10.1016/j.quascirev.2025.109460","DOIUrl":"10.1016/j.quascirev.2025.109460","url":null,"abstract":"<div><div>In the field at Cuopu in Southeast Tibet, the two largest imbricated moraines have been dated using terrestrial cosmogenic nuclides as Marine oxygen Isotope Stage 6 (MIS-6, ∼180 ka) and MIS-2 (or Last Glacial Maximum, LGM, ∼20 ka), consistent with the two largest last glaciations. We conducted a coupled mass balance-glacier flow model, calibrated with our field observations (moraine geometry and trimline locations) and in-situ age measurements at Cuopu, to quantitatively estimate the paleotemperature and paleoprecipitation during these two glaciations. Simulations for MIS-6 suggest that only a small cooling range (∼6–6.35 °C colder than the present) reproduces field observations for documented precipitation similar to those at present (−10 to +10 %). For the LGM, simulations require a broader cooling range (∼6.0–7.5 °C) to reproduce the field observations for a documented precipitation decrease of 30–70 %. Considering similar cooling for the LGM and MIS-6, consistent with the δ¹⁸O curves, we conclude that at Cuopu the most probable cooling range during the LGM was thus ∼6.0–6.35 °C, corresponding to a precipitation decrease of 30–45 %. The MIS-6 paleoclimate we constrain remains distinctly separate from that of the LGM, even when accounting for a wide range of modelling parameters, and thus provides a robust reference for estimating the age of such older, poorly preserved moraines throughout SE Tibet.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"364 ","pages":"Article 109460"},"PeriodicalIF":3.2,"publicationDate":"2025-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144230484","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":"Deep-sea coral recording of the neodymium isotope signature of Labrador Sea intermediate water at sporadic intervals over the last two climatic cycles","authors":"Claude Hillaire-Marcel ,&nbsp;Jenny Maccali ,&nbsp;Evan Edinger ,&nbsp;André Poirier","doi":"10.1016/j.quascirev.2025.109415","DOIUrl":"10.1016/j.quascirev.2025.109415","url":null,"abstract":"<div><div>Live and sub-fossil deep-sea solitary scleractinian corals (<em>Desmophyllum dianthus)</em> were collected at Orphan Knoll and Flemish Cap, in the southern Labrador Sea (LS), at depths ranging 1600–2200 m, thus encompassing the maximum convection depth of the modern Labrador Sea Water (LSW) and slightly above the modern Northeast Atlantic Deep-Water mass, the two upper components of the North Atlantic Deep Water (NADW). U-series and ¹⁴C ages allowed the assignment of the fossil specimens to the mid-to late Holocene, the Marine Isotope Stages (MIS) 5c, and 7 (likely 7a). The research objective was to document the specificity of the neodymium isotope recordings of water masses occupying the Labrador Sea during these time windows, with special attention to possible convection in this basin, thus to production of the intermediate Labrador Sea Water (LSW). Live-collected specimens and ambient seawater fit with a εNd value of – 14, assigned to the modern NADW, indicating that the coral skeletons reliably capture the isotopic composition of dissolved Nd. During the mid-Holocene, they recorded an εNd-shift from ∼ −18 to ∼ −14, this latter value since remaining practically unchanged, pointing to a late attainment of modern like conditions in the Labrador Sea. A similar value (∼−14) was also recorded by a Bølling-Allerød pseudo-colony. The MIS 7a specimens yielded a lesser radiogenic value, close to that of the early Holocene (εNd ∼ −18 vs −19), recording the influence of Greenland and Canadian shield lithogenic unradiogenic sources on the open North Atlantic water masses bearing a more radiogenic εNd-signature. With εNd-values ranging from −20 to −26, the MIS 5c cluster illustrates a drastically distinct and unstable situation that we associate with sporadically-enhanced overflows of Baffin Bay water and/or the partial dissolution of dolostones linked to hypopycnal sporadic plumes deposited along the Labrador Slope. So far, only the late Holocene and Bølling-Allerød corals (eNd ∼ −14) point to a modern-like situation with convection down to about 2000 m in the basin, thus LSW production, linked to the advection of more salty and more radiogenic εNd-bearing North Atlantic water masses, i.e., a full integration of the Labrador Sea into the Atlantic Meridional Overturning Circulation.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"363 ","pages":"Article 109415"},"PeriodicalIF":3.2,"publicationDate":"2025-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144230200","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":"Quantifying tidal zonation through pollen-microfacies coupling: A Holocene sea-level proxy from Hangzhou Bay, eastern China","authors":"Xiaoyu Zhang ,&nbsp;Yan Liu ,&nbsp;Jinqi Dai ,&nbsp;Li Xiao ,&nbsp;Xiaolong Chen ,&nbsp;Xueming Li ,&nbsp;Jing Chen ,&nbsp;Maotian Li ,&nbsp;Qianli Sun ,&nbsp;Lingyu Tang","doi":"10.1016/j.quascirev.2025.109466","DOIUrl":"10.1016/j.quascirev.2025.109466","url":null,"abstract":"<div><div>Accelerating sea-level rise necessitates high-resolution paleoenvironmental proxies to refine future projections. Mid-Holocene analogs remain critical for coastal vulnerability assessments, yet microfacies-based reconstructions are constrained by limited diagnostic precision in sedimentary archives. Here, we address this gap through systematic analysis of modern vegetation zonation and pollen transport dynamics across tidal flat transects in South Hangzhou Bay, eastern China. Results demonstrate that pollen distributions encode quantifiable tidal elevation signals: (1) Allochthonous <em>Pinus</em> pollen dominates unvegetated lower intertidal zones and <em>Spartina alterniflora</em>-sparse middle flats, exhibiting an inverse relationship with elevation; (2) Autochthonous Chenopodiaceae and <em>Taraxacum</em> pollens show strong positive elevational dependencies, peaking in upper intertidal marshes and supratidal terrestrial interfaces; (3) Poaceae pollen lacks diagnostic value due to dual airborne/hydrodynamic transport pathways, producing homogenized distributions across tidal zones. We propose <em>Pinus</em> depletion trends and Chenopodiaceae enrichment thresholds as discrete elevational markers for reconstructing Holocene relative sea-level (RSL) index points. This work establishes pollen as a high-resolution proxy capable of resolving previously unrecognized tidal zonation patterns, thereby advancing the spatiotemporal precision of post-glacial RSL reconstructions in coastal systems.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"364 ","pages":"Article 109466"},"PeriodicalIF":3.2,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144223244","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":"Asymmetric evolution of incised-valley deposits in response to sea-level changes since the Penultimate Glacial Maximum, southeastern Korea","authors":"Seok-Hwi Hong ,&nbsp;Dong-Geun Yoo ,&nbsp;Woo Hun Ryang ,&nbsp;Jin Cheul Kim ,&nbsp;Gwang-Soo Lee","doi":"10.1016/j.quascirev.2025.109462","DOIUrl":"10.1016/j.quascirev.2025.109462","url":null,"abstract":"<div><div>The recognition of lowstand fluvial deposits in incised valleys below coastal plains is important for establishing the evolution of depositional systems over one glacial period in response to sea-level changes. The Penultimate Glacial Maximum lowstand was lower than the Last Glacial Maximum lowstand, making it imperative to consider it as a beginning-point for documenting incised valley fills. The preservation of whole deposits owing to weathering and erosional processes during glacial periods pose of challenge for studying the Penultimate Glacial Maximum. Here, we carefully conducted core analyses of sedimentary facies, grain size, and OSL age dating from the two cores, in addition to documenting younger valley infills. Seven facies associations were defined in the cores: braided river, tributary channel and land swamp, mud flat and marsh, fluvial channel and floodplain, central basin to bayhead prodelta, bayhead delta front, and bayhead delta plain. Overall, the sedimentary analyses indicate that the depositional environments of each stage produced during the five successive stages and correspond to the relationship between sediment supply and accommodation spaces in response to sea-level changes in the Nakdong incised-valley system. The Nakdong incised-valley fills shows that one and a half sea-level cycle was preserved in an incised-valley system during Last Glacial Maximum periods. The wedge-shaped geomorphology influenced the architecture and preservation of the Nakdong incised-valley deposits characterized by the asymmetric development of depositional successions since the Penultimate Glacial Maximum.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"364 ","pages":"Article 109462"},"PeriodicalIF":3.2,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144223243","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}