Quaternary Science Reviews最新文献

{"title":"Vulnerability of montane forests of Cameroon in the face of climate change: Insight from the last glacial-interglacial transition","authors":"Anne-Marie Lézine ,&nbsp;Gaston Achoundong ,&nbsp;Barthélémy Tchiengué","doi":"10.1016/j.quascirev.2025.109410","DOIUrl":"10.1016/j.quascirev.2025.109410","url":null,"abstract":"<div><h3>Aim</h3><div>Afromontane forests of Cameroon are part of the West Africa Biodiversity Hotspot. Often located within or on the fringes of densely populated regions, they are currently highly threatened by the combined effect of climate change and of anthropogenic pressure. In order to provide bases for their conservation and management this article aims at studying the turnover of species and in particular the behavior of <em>Podocarpus milanjianus/latifolius</em> during the last glacial-interglacial transition, a period characterized by dramatic shifts in climatic conditions.</div></div><div><h3>Location</h3><div>Cameroon highlands, Lake Bambili, Lake Mbi, Lake Child and Lake Monoun.</div></div><div><h3>Methods</h3><div>Pollen analyses.</div></div><div><h3>Results</h3><div>The expansion of the post-glacial Afromontane forest took place in two main stages, coinciding with periods of increased precipitation. The first phase of development dates back to 14.5 ka. It was interrupted by the dry event of the Younger Dryas (YD) starting at 12.5 ka. The Afromontane forest then resumed its expansion from 11.5 ka, reaching its optimum between 9.8 and 8.5 ka. This was characterized by the massive expansion of <em>Podocarpus</em> in the northern sector of the Cameroon Volcanic Line (CVL) (Bambili, Mbi, Monoun). In the southern sector, closer to the coast, on the other hand, Afromontane forest elements declined in favor of sub-montane elements during the Holocene (Child).</div></div><div><h3>Main conclusions</h3><div>(i) <em>Podocarpus</em> experienced significant changes in abundance/extent within the current Afromontane forest belt during the post-glacial forest transgression. It was a fast colonizer in open and floristically poorly diverse areas where it benefited from the absence of competitors. In contrast, it has been a weak competitor within the Afromontane forest itself compared to more dynamic and fast dispersing tree taxa. (ii) The forest optimum was reached during the early Holocene, after a long period of gradual forest expansion characterized by a high turnover of species; (iii) Migration and stabilization times of the forest environment can be evaluated in centuries, even millennia, that has important implication for forest management.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"363 ","pages":"Article 109410"},"PeriodicalIF":3.2,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144125165","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":"Time-transgressive response of benthic foraminifera to the deglaciation of the Northeast Greenland shelf","authors":"Mads Ramsgaard Stoltenberg ,&nbsp;Tuomas Junna ,&nbsp;Joanna Davies ,&nbsp;Karoline Kristensen ,&nbsp;Katrine Elnegaard Hansen ,&nbsp;Christof Pearce ,&nbsp;Marit-Solveig Seidenkrantz","doi":"10.1016/j.quascirev.2025.109407","DOIUrl":"10.1016/j.quascirev.2025.109407","url":null,"abstract":"<div><div>Proxy-based reconstructions are imperative for understanding long-term ice dynamics, ecological conditions, and oceanographic variability following the deglaciation due to the temporal limitation of instrumental records. This study examines the response of benthic foraminiferal assemblages to the deglaciation of the Northeast Greenland shelf based on three sediment cores from the Belgica Trough (∼77°N), testing to which degree the foraminifera show a consistent response to environmental change. Recent studies from the Belgica Trough reveal that the shelf edge was deglaciated before 16.6 cal ka BP through a stepwise ice retreat, followed by a rapid retreat through the inner shelf, likely before 12.5 cal ka BP. The results of this study reveal the subsequent development of the deglaciated marine environment to exhibit a consistent time-transgressive foraminiferal assemblage succession across the core sites, delineated by three distinct foraminiferal zones. This allows us to further improve previous reconstructions of the deglacial-Holocene paleoenvironmental and paleoceanographic development of the shelf. It also highlights the sensitivity of benthic foraminifera towards the complex interaction between ice dynamics, ecological conditions, and oceanographic variability, proving their reliability and consistency as a proxy. Comparisons with other Arctic deglacial successions suggest the potential for identifying standard assemblages to recognize specific stages in a deglacial succession: Assemblages characterized by the species <em>Stetsonia horvathi</em>, <em>Stainforthia concava,</em> and <em>Glomulina oculus</em> appear as a reliable indicator of sub-ice shelf conditions following deglaciation, while stable higher salinity conditions often found during periods of influx of Atlantic-derived water is characterized by <em>Cassidulina neoteretis</em>, <em>Cassidulina reniforme</em>, and <em>Islandiella norcrossi</em>. High-productivity environments are advantageous for <em>Melonis barleeanus</em>, <em>Stainforthia feylingi</em>, and other eutrophic species, and these species thus make out a reliable standard for recognizing productive paleoenvironments often linked to ice edges or seasonal sea ice. Dissolution of calcareous taxa, and dominance of agglutinated taxa characterize cold, corrosive bottom water conditions and/or periods of brine formation.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"362 ","pages":"Article 109407"},"PeriodicalIF":3.2,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144106482","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":"Corrigendum to ‘Ecological environment of early-mid Holocene millet cultivation in northern China: Insights from the Xinglong site’ [Quat. Sci. Rev. 356 (2025) 109295]","authors":"Zhenwei Qiu ,&nbsp;Lina Zhuang ,&nbsp;Huiyun Rao ,&nbsp;Zhihua Yang ,&nbsp;Wenhui Liu ,&nbsp;Guanyu Wang","doi":"10.1016/j.quascirev.2025.109354","DOIUrl":"10.1016/j.quascirev.2025.109354","url":null,"abstract":"","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"362 ","pages":"Article 109354"},"PeriodicalIF":3.2,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144098333","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":"Past Amazon precipitation under different Atlantic Meridional Overturning Circulation and sea surface temperature scenarios of the last deglaciation","authors":"Júlia Grigolato ,&nbsp;Cristiano M. Chiessi ,&nbsp;Dailson J. Bertassoli Jr. ,&nbsp;Marília C. Campos ,&nbsp;Marília H. Shimizu ,&nbsp;Renê H. Magalhães ,&nbsp;Trevor Nace ,&nbsp;André O. Sawakuchi ,&nbsp;Ingo D. Wahnfried ,&nbsp;Rafael Neri ,&nbsp;Alan C. Cunha ,&nbsp;Cleverson G. Silva ,&nbsp;Paul A. Baker ,&nbsp;Aline Govin ,&nbsp;Matthias Zabel","doi":"10.1016/j.quascirev.2025.109425","DOIUrl":"10.1016/j.quascirev.2025.109425","url":null,"abstract":"&lt;div&gt;&lt;div&gt;Changes in the strength of the Atlantic Meridional Overturning Circulation (AMOC) have been suggested to affect the mean latitude of the tropical rain-belt and the intensity of the South American Monsoon System. These changes impact Amazonian precipitation patterns, which play a critical role in sustaining the most biodiverse ecosystem on Earth. Consequently, the projected decrease in AMOC strength in response to anthropogenic climate change may constitute a serious risk to the stability of the Amazon rainforest. AMOC strength was significantly reduced during most millennial-scale stadials (e.g., Heinrich Stadials (HS)) of the last glacial and deglacial periods. These stadials offer valuable opportunities to understand the impact that slowdowns of the AMOC, as well as other concurrent changes of large-scale ocean and atmospheric conditions (e.g., sea ice extent, surface winds, ice sheet height and extent, sea level), had on Amazonian precipitation. Here we reconstruct precipitation changes that occurred in the Amazon Basin from 27.4 to 3.6 cal ka BP with a focus on Heinrich Stadial 1 (HS1, 18.6–14.6 cal ka BP) and the Younger Dryas (YD, 12.9–11.7 cal ka BP, also known as Heinrich stadial 0). To achieve this, two marine sediment cores collected from the slope of the western equatorial Atlantic were radiocarbon dated and analyzed for major elemental composition. To support the interpretation of our data, we employed (i) a comprehensive evaluation of major elemental composition in suspended sediments from the major rivers of the Amazon Basin, (ii) a regional compilation of tropical South American hydroclimate records, and (iii) outputs from a transient fully-coupled climate model run covering the last 21 ka. Our results reveal different precipitation patterns in the Amazon Basin during HS1 and the YD that were related to heterogenous displacements of the Intertropical Convergence Zone (ITCZ) and heterogenous sea surface temperature (SST) anomalies in the western equatorial Atlantic and the eastern equatorial Pacific. These changes were at least in part associated to different AMOC scenarios. Furthermore, two distinct phases are discernible within HS1 (i.e., HS1a from 18.6 to 16.6 cal ka BP and HS1b from 16.6 to 14.6 cal ka BP), each being characterized by variations in the relative concentrations of Al, K, Ca, Ti, and Fe. We interpret these sediment composition changes to be related to a shift in the main precipitation locus, that moved from the central Andes (HS1a) to southeastern Amazonia (HS1b). During HS1b, the low-pressure region over the eastern equatorial Pacific (due to a stronger positive SST anomaly in the eastern equatorial Pacific relative to the western equatorial Atlantic) produces, together with a shift further south in the ITCZ position, a positive precipitation anomaly over the southern and eastern Amazon Basin. Precipitation anomalies during the YD were apparently less conspicuous, located in the eastern Amazon Basin, but","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"362 ","pages":"Article 109425"},"PeriodicalIF":3.2,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144098332","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":"Impacts of sea level rise and climate change on the sources, preservation and thermal stability of sedimentary organic carbon in the East China Sea inner shelf since the last deglaciation","authors":"Muhammad Faheem Ashfaq ,&nbsp;Bin Zhao ,&nbsp;Lilei Chen ,&nbsp;Yang Ding ,&nbsp;Nan Wang ,&nbsp;Xiwen Ye ,&nbsp;Chao Gao ,&nbsp;Xiaoyong Duan ,&nbsp;Peng Yao","doi":"10.1016/j.quascirev.2025.109416","DOIUrl":"10.1016/j.quascirev.2025.109416","url":null,"abstract":"<div><div>Large river-dominated marginal seas are important hotspots for organic carbon (OC) burial, yet the long-term preservation of OC from diverse sources and with varying reactivities remains poorly understood. Specific surface area (SSA), median grain size (MGS), total OC (TOC) contents and its stable isotopic composition (δ¹³C), lignin phenols, chlorophyll pigments and thermogravimetric properties of sediments from a gravity core collected from the East China Sea (ECS) inner shelf were analyzed. The overarching objective was to evaluate the impacts of sea level rise and climate change on the sources, preservation and thermal stability of SOC in the ECS inner shelf since the last deglaciation. Prior to seawater intrusion (before 13.2 ka BP), bulk parameters such as TOC and MGS varied slightly, with terrestrial OC being the predominant source. With the sea level rise during the Bølling-Allerød (BA), Younger Dryas (YD) and early Holocene periods (13.2–7.5 ka BP), marine OC increased due to enhanced marine primary production. When the modern current system was established (after 7.5 ka BP), the marine OC decreased along with the increase of soil and plant-derived OC, due in part to increased terrestrial inputs from the Changjiang. Notably, the abrupt cold events occurring during the YD and Holocene periods displayed a significantly higher proportion of terrestrial plant-derived OC with low thermal stability and elevated TOC/SSA ratios. In contrast, thermally stable soil-derived OC was effectively preserved during the mid-late Holocene due to the enhanced East Asian winter monsoon (EAWM) and reduced precipitation. These findings highlight the significance of sea level rise and climate change, especially extreme climate events in the sequestration of OC in coastal sediments.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"362 ","pages":"Article 109416"},"PeriodicalIF":3.2,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144089747","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 last interglacial and mid-Holocene sea level variability in the northern Indian Ocean and the influence of hydro-isostasy","authors":"P.N. Ranasinghe ,&nbsp;L.H.M.T.M.B. Ambillapitiya ,&nbsp;Tanghua Li ,&nbsp;Chuan-Chou Shen ,&nbsp;G.K. Ranasinghe ,&nbsp;Sze-Chieh Liu","doi":"10.1016/j.quascirev.2025.109403","DOIUrl":"10.1016/j.quascirev.2025.109403","url":null,"abstract":"<div><div>Microtidal coastline around Sri Lanka, situated at the tectonically stable northern Indian Ocean, provides reliable evidence for sea level studies and to understand the hydro isostatic influence on eustatic changes. As the past sea level data are limited in the northern Indian Ocean region and due to the significant discrepancies among the outcomes of previous work, this study used stable, in situ sea level indicators to study the past sea level changes in the region.</div><div>Emerged and submerged in situ corals from both north (16 samples) and south (14 samples) were used as marine limiting points (MLP) while beach rocks (06 samples) were used as sea level index points (SLIPs) and lagoon sediment (01 samples) was used as terrestrial limiting point (TLP). Their elevations were measured precisely from the modern mean sea level. Age dating was carried out using Accelerator Mass Spectrometry (AMS), gas bench radiocarbon techniques, and the U-Th method.</div><div>Emerged corals at Punkuduthiviu (1.22 m), Iranathivu (0.82 m), and Kachchatheevu (3.55 m), islands located in the Palk Strait, record the evidence for Marine Isotope Stage (MIS) 5e (≊ 128 ka BP relative to 1950 AD) and MIS 5c (≊ 107 ka BP) sea level highstand in the northern Indian Ocean. Corals in northern Islands show that the mid-Holocene highstand (MHH) relative sea level (RSL) was &gt;1.5 m in the north around 6500 cal yrs BP and started decreasing after that. When considering the eroded height and evidence from a wave-cut notch in Kachchatheevu, it can be inferred that the MHH RSL reached about 2 m. In contrast, RSL during MHH in the south reached its maximum (∼1.6 m) about 1000 yrs later (∼5500 cal yrs BP), as evidenced by corals and beach rocks. The post-glacial sea level reached the modern mean tidal level at the southern coast between 6250 and 6500 cal yrs BP and gradually decreased after the MHH. Most MLPs and SLIPs in the south are at lower elevations than in the north. The Holocene sea level variability in the north and south predicted by the ICE-6G_C Glacial Isostatic Adjustment model closely matches field data. The differences in magnitude and timing of MHH between north and south can be explained by contrasting local deflections in continental shelves caused by meltwater loading and transgression velocities, with the broad and gently sloping continental shelf in the north vs. the narrow and steeper shelf in the south.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"362 ","pages":"Article 109403"},"PeriodicalIF":3.2,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144084065","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 Late Pleistocene relative sea levels on transgressed shelves: an example from central California","authors":"Elisa Medri ,&nbsp;Alexander R. Simms ,&nbsp;Jared Kluesner ,&nbsp;Samuel Y. Johnson ,&nbsp;Stuart P. Nishenko ,&nbsp;H. Gary Greene ,&nbsp;James E. Conrad ,&nbsp;Devin Rand","doi":"10.1016/j.quascirev.2025.109408","DOIUrl":"10.1016/j.quascirev.2025.109408","url":null,"abstract":"<div><div>Although prevalent for the late Holocene, relative sea level (RSL) constraints during and immediately after the Last Glacial Maximum (LGM) are sparse. This scarcity of data is particularly pronounced along mid-latitude shelves such as central California, which lack post LGM RSL constraints older than 12 ka. In this study we collected 7 sediment cores and high-resolution seismic data from Estero Bay to constrain RSLs across the central California shelf between ∼9 and ∼16 ka. We reconstructed these RSLs using two sea-level indicators found within our sediment cores: the wave ravinement shell hash burial surface (WRSHBS) and the sedimentary contact between offshore mud facies and ripple cross-laminated sands. To determine the indicative meaning of these two sea-level indicators, we examined the relationship between the local wave regime, modern bathymetric profiles, and the depth of preservation of each sea-level indicator. After correcting for tectonic uplift, we estimated sea levels in central California to have been ∼39 ± 7.5 and 49 ± 7.5 m below present sea level between 9 and 12 ka, in agreement with previous RSL reconstructions along this coast. Between 13.8 and 15.9 ka, we estimate sea levels to have reached ∼86 ± 8–99 ± 8 m below present sea level. Our findings offer a Late Pleistocene RSL reconstruction for central California and develop new methodologies for estimating past RSLs on similar mid-latitude shelves.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"361 ","pages":"Article 109408"},"PeriodicalIF":3.2,"publicationDate":"2025-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144072361","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":"High-resolution studies of the Bølling-Allerød to the Younger Dryas transition in the Netherlands: implications for the reconstruction of vegetation changes and the potential role of (perma)frost in contemporary paludification","authors":"Bas van Geel,&nbsp;Jan Sevink","doi":"10.1016/j.quascirev.2025.109411","DOIUrl":"10.1016/j.quascirev.2025.109411","url":null,"abstract":"<div><div>High-resolution studies of botanical microfossils and macroremains were performed on two Lateglacial sites in The Netherlands. Both sites showed a thin <em>Sphagnum</em> layer, formed during the transition from the relatively warm Bølling-Allerød interstadial to the cold Younger Dryas. Dendrochronological analyses revealed that pine trees survived into the Younger Dryas for decades without producing relevant amounts of pollen, demonstrating an asynchronicity between the decline of pine pollen and the actual death of the pine trees. We discuss possible causes for the sudden occurrence of <em>Sphagnum</em> following on the pine forest dieback and conclude that there may be a link with (perma)frost, causing perched water tables and inducing paludification. The formation of <em>Sphagnum</em> peat at the beginning of the Younger Dryas is not necessarily an indicator of wetter climate but could be an indication for a frozen subsoil inducing a (seasonal) perched groundwater table and cryopaludification.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"361 ","pages":"Article 109411"},"PeriodicalIF":3.2,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144069763","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":"Lake sedimentation and landscape evolution since ∼31 ka in Isla Grande de Chiloé, northwestern Patagonia (42°S)","authors":"L. Guerra ,&nbsp;D. Briones ,&nbsp;V. Flores-Aqueveque ,&nbsp;R.L. Soteres ,&nbsp;T. Schneider ,&nbsp;H. Vogel ,&nbsp;L. López-García ,&nbsp;P.I. Moreno","doi":"10.1016/j.quascirev.2025.109374","DOIUrl":"10.1016/j.quascirev.2025.109374","url":null,"abstract":"<div><div>We combine sedimentological analysis, high-resolution imaging, and X-ray fluorescence data to investigate sedimentary processes and landscape evolution from lake records in central Isla Grande de Chiloé (42°23′S, 72°49′W), northwestern Patagonia between ∼31-1.6 ka. The oldest section consists of laminated inorganic silts with a local geochemical signature deposited in a low-energy environment (Stage 1: ∼31-26 ka), interrupted by hiatuses and coarse-grained allochthonous deposits associated with high-energy events (Stage 2: ∼26-18 ka). The end of laminated facies and increasing organic matter led to a rising productivity trend and slope stability (Stages 3 and 4: ∼18-14.1 ka, ∼14.1-10.8 ka), along with volcaniclastic influx advected from the Andean Southern Volcanic Zone (Stage 5: ∼10.8 -1.6 ka). We interpret sedimentation in proglacial lakes fed by varying intensities of glacier meltwater from the western margin of the Golfo Corcovado piedmont lobe during the LGM in Patagonia, followed by a sudden change to closed-basin lakes driven by glacier withdrawal at the onset of the Last Glacial Termination (∼18 ka). This detachment shifted the facies composition and arrangements toward predominance of climate and distal volcanic processes until ∼1.6 ka. Our records capture salient millennial-scale features of the environmental evolution from western Patagonia since ∼31 ka, and match paleoclimate records at zonal and hemispheric scales. Our facies analysis underscores the presence of centennial fluctuations and instantaneous processes through glacial and non-glacial lake regimes.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"361 ","pages":"Article 109374"},"PeriodicalIF":3.2,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143948600","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 northward expansion of the Tibetan Plateau: Topographic evidence from the Bogda Mts. – southern Junggar Basin coupling system, northwest China","authors":"Mengyue Duan ,&nbsp;Franz Neubauer ,&nbsp;Jörg Robl ,&nbsp;Xiaohu Zhou ,&nbsp;Anne-Laure Argentin ,&nbsp;Moritz Liebl ,&nbsp;Yunpeng Dong ,&nbsp;Xiaohui Shi ,&nbsp;San Zhang ,&nbsp;Heng Peng","doi":"10.1016/j.quascirev.2025.109402","DOIUrl":"10.1016/j.quascirev.2025.109402","url":null,"abstract":"<div><div>The northward propagation of the Tibetan Plateau has led to the orthogonal N–S shortening in northwestern China, which influenced the topographic formation of the E–W trending Bogda Mountains–southern Junggar Basin coupling system. In this study, we focus on the landscape formation of this coupling system and investigate the effect of the propagating deformation in the periphery of the India-Asia collision zone using topographic analysis and optically stimulated luminescence (OSL) dating of river terraces. Together, the results of the topographic analysis show that the normalized steepness index (<em>k</em>_<em>sn</em>) value and the scale of knickpoints decrease from west to east, and there is no significant difference in <em>χ</em> values between two sides of the Bogda Mts. Compiled low-temperature thermochronological data for the Bogda Mts. shows a younging trend from west to east, suggesting that the uplift of the western Bogda Mts. began earlier. The OSL dating for the Dalongkou river terraces, on the northern slope of the Bogda Mts. resulted in ages of the T2, T3, T4 river terraces of 6.2 ± 1.3 ka, 13.1 ± 1.7 ka, and 14.2 ± 2.5 ka, respectively. The incision rate of the Dalongkou River increases upstream from about 1.22 mm/yr near to the southern Junggar Basin, to about 2.1 mm/yr, and to approximately 6.33 mm/yr at the base of Bogda Mts. and reveals an upstream increasing uplift rate. Based on these new data, we propose a model of ongoing late Quaternary folding leading to the upbending of central Bogda Mts., with an inflection point of the fold close to the southern Junggar Basin. Combined with the geomorphological comparison with the eastern North Tianshan landscape, we conclude that the lateral intensity of the tectonic uplift from the North Tianshan to Bogda Mts. has gradually weakened, and the uplift of Bogda Mts. has gradually accelerated since the Quaternary and is controlled by N–S orthogonal shortening caused by the India-Asia collision.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"362 ","pages":"Article 109402"},"PeriodicalIF":3.2,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144069813","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}