Journal of Quaternary Science最新文献

{"title":"Geomorphology and chronology of Late Quaternary terrace staircases of the Sakarya River, northwest Türkiye","authors":"Ebubekir Karakoca,&nbsp;Levent Uncu,&nbsp;Mehmet Akif Sarikaya,&nbsp;Eren Şahiner,&nbsp;Oğuzhan Köse","doi":"10.1002/jqs.3695","DOIUrl":"https://doi.org/10.1002/jqs.3695","url":null,"abstract":"<div>\u0000 \u0000 <p>The Sakarya, one of the longest rivers in northwest Anatolia, has significant geomorphological units along its course including terrace systems that have potential to reveal the tectonic and geomorphological evolution of the region. The aim of this research was to identify the processes that have influenced the formation of terrace systems based on regional and local tectonic activities during the Late Quaternary and effects of global climatic changes on levels of the Black Sea. In particular along the İnhisar–Osmaneli section of the Sakarya River, the terrace systems, which are determined at four different levels, are crucial in terms of illuminating the geomorphological development of the region during the Late Quaternary. Our optically stimulated luminescence results revealed three different ages of deposition: 158.03 ± 12.93, 150.97 ± 8.49 and 55.07 ± 4.57 ka (Middle–Late Pleistocene). This permitted calculation of a mean regional uplift rate of 0.18 ± 0.03 mm a^–1 since the Middle–Late Pleistocene. The younger terrace remnants correspond to Late Pleistocene Marine Isotope Stage (MIS) 3c (interstadial) and the older ones to Late Middle Pleistocene MIS 6b (interstadial). This implies that the Sakarya River accumulated floodplain sediments, now terraces, during relatively warm and humid periods. On the other hand, in cold and/or cold–warm transition periods, it created terraces by incision into the river bed. This interpretation implies that fluvial incision in the region was a response to regional uplift that has been continuing for at least the last 158 ka.</p>\u0000 </div>","PeriodicalId":16929,"journal":{"name":"Journal of Quaternary Science","volume":"40 3","pages":"386-399"},"PeriodicalIF":1.9,"publicationDate":"2025-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143778471","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}

{"title":"A record of monsoon rainforest variability from the Kimberley region in northwestern Australia","authors":"Rachel C. Rudd,&nbsp;Teresa Dixon,&nbsp;John Nikolaus Callow,&nbsp;Patricia S. Gadd,&nbsp;Sabika Maizma,&nbsp;Geraldine Jacobsen,&nbsp;Patrick Moss,&nbsp;Hamish McGowan","doi":"10.1002/jqs.3693","DOIUrl":"https://doi.org/10.1002/jqs.3693","url":null,"abstract":"<p>Northern Australia experiences extreme seasonality via the Indo-Australian summer monsoon, with high inter-annual variability in hydroclimate. Understanding the influence of hydrological variability on the landscape through the period of human occupation provides important environmental context to support the interpretation of the rich archaeological and rock art records of the region. The development of terrestrial records of environmental change has remained challenging due to the limited traditional palaeoenvironmental archives in the region. This study reports on the potential of sediments from ecologically significant monsoon rainforest patches to further elucidate the palaeoenvironmental history of the Kimberley. An ~19 000-year record of monsoon rainforest variability is presented, inferred from pollen, charcoal and major element geochemical analysis. Monsoon rainforest-associated taxa vary in abundance through the deglacial and the Holocene, which is compared to broad-scale hydroclimate variability inferred from previous studies in the region. The persistence of arboreal, riparian and monsoon rainforest-associated taxa suggest a positive moisture balance at the site throughout the period archived. Fire activity inferred from micro- and macrocharcoal is greatest over the last ~6000 years, and broadly corresponds to periods when monsoon rainforest-associated taxa are less abundant. Challenges remain in using this type of site as an archive of environmental change, but they also present an opportunity to extend previous records both spatially and temporally with thousands of monsoon rainforest patches present across the Kimberley, and similar ecosystems found across northern Australia.</p>","PeriodicalId":16929,"journal":{"name":"Journal of Quaternary Science","volume":"40 2","pages":"243-256"},"PeriodicalIF":1.9,"publicationDate":"2025-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jqs.3693","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143370102","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Past hydro-pedological events and trend reflected in the Mid–Late Holocene alluvial record of the Middle Rhône Valley and tributaries: A new reference for South East France","authors":"Jean-Francois Berger,&nbsp;Jacques Leopold Brochier","doi":"10.1002/jqs.3692","DOIUrl":"https://doi.org/10.1002/jqs.3692","url":null,"abstract":"<div>\u0000 \u0000 <p>This paper proposes a new approach to quantitative geomorphology and paleopedology in the mid-Rhône valley (MRV) based on a compilation of geomorphological metadata from 25 tributaries of the Rhône river and subordinate floodbasins, including 51 geomorphological and paleopedological sites. This study compares two types of hydrogeomorphological data formalization: a temporal similarities analysis between paleosols and fluvial aggradation of sub-basins, and a quantitative analysis by summed probability distributions comparing floodplain stability and activity phases in cumulative density functions of categorized ¹⁴C and chronocultural dates. Alluvial chronologies at centennial to millennial time scales, coinciding with a modification in sedimentation rate, or river style, demonstrate temporal and spatial patterning of MRV alluviation, pedogenesis and erosion across the western Prealpine region, with detection of 24 main Holocene alternative periods (activity versus stability). To explore possible large-scale hydroclimatic teleconnections, the Holocene MRV results are aligned, and correlations are made, with those of a range of paleohydrological proxy studies from all Rhône drainage basins, Western Europe and the Mediterranean. The MRV rivers respond to the majority of Holocene rapid climatic changes and from 4000/3000 cal a \u0000<span>bp</span> to an accelerated sediment delivery and torrentiality from slopes and headwaters, which results in the development of sedimentary cascades from upstream to downstream in the Rhône valley to the delta (the main drivers are discussed in detail in in a companion paper to follow).</p>\u0000 </div>","PeriodicalId":16929,"journal":{"name":"Journal of Quaternary Science","volume":"40 4","pages":"711-733"},"PeriodicalIF":1.9,"publicationDate":"2025-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143944584","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}

{"title":"The Pleistocene Witch Ground Ice Stream in the central North Sea","authors":"Benedict T. I. Reinardy,&nbsp;Jens Karstens,&nbsp;Christoph Böttner,&nbsp;Anna Lichtschlag,&nbsp;Christian Berndt,&nbsp;Nichola A. Strandberg,&nbsp;Ben J. Callow","doi":"10.1002/jqs.3691","DOIUrl":"https://doi.org/10.1002/jqs.3691","url":null,"abstract":"<p>The North Sea Basin has been covered by ice sheets originating from both the British Isles and Scandinavia at multiple times during the Pleistocene. The Witch Ground Basin (WGB) in the central northern North Sea is a critical location in terms of interpreting Late Pleistocene glacial to glacimarine history of the North Sea since it was the location of the Witch Ground Ice Stream that was active on multiple occasions during the Mid to Late Pleistocene. We map five mega-scale glacial lineation flowsets corresponding to the changing ice flow direction of the Witch Ground Ice Stream and investigate the sedimentological fingerprint and corresponding subglacial depositional processes of this palaeo-ice stream. We show that sorted sand layers within a subglacial traction till represent periodic hydraulic jacking and ice–bed decoupling at the base of the Witch Ground Ice Stream. In contrast to previous studies that have described glacitectonites deposited below the most recent grounded ice in the WGB, we present analysis of sediment cores that recovered primarily massive diamictons without any obvious deformation structures. The most recent ice cover in the WGB (~18–16 ka) was thought to have been sourced from a localized ice cap over Orkney and Shetland. The presence of chalk clasts sourced from NW of the WGB described in this study from the stratigraphically youngest till confirms this interpretation. The transition from subglacial to glacimarine deposition, while acoustically well defined (from opaque to laminated acoustic units), appears surprisingly uniform in the recovered sediment cores, but can be differentiated based on a change in colour including mottling and banding, presence of whole intact shells, and the increased number of silt and sand lenses. ¹⁴C dating of glacimarine muds indicate high sedimentation rates of between 80 and 260 cm ka⁻¹. The transition from glacimarine to marine deposition is represented by a comparative decrease in sedimentation rate and deposition of Holocene age sandy mud. This study demonstrates a highly dynamic Witch Ground Ice Stream in the northern North Sea during the Late Pleistocene with evolving subglacial hydrology and depositional processes at the ice stream bed that left a distinct geomorphological and sedimentological fingerprint within the WGB.</p>","PeriodicalId":16929,"journal":{"name":"Journal of Quaternary Science","volume":"40 2","pages":"185-200"},"PeriodicalIF":1.9,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jqs.3691","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143370101","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"New records of Lutra simplicidens Thenius, 1965 from Europe","authors":"Adrian Marciszak,&nbsp;Alfie Bower","doi":"10.1002/jqs.3689","DOIUrl":"https://doi.org/10.1002/jqs.3689","url":null,"abstract":"<div>\u0000 \u0000 <p>New material of <i>Lutra simplicidens</i>, a key species for understanding the evolution of Eurasian Lutrinae, is described from the English site of Corton (0.7‒0.6 Ma) and the Polish site of Żabia Cave (1.7‒1.5 Ma). Both records are represented by incomplete mandibles with partially preserved dentition. The record from Żabia Cave documents the presence of an older and more carnivorous <i>Lutra simplicidens tamanensis</i>. A less carnivorous <i>Lutra simplicidens simplicidens</i> was found in Corton. Both findings contribute valuable data on the evolutionary history of the species.</p>\u0000 </div>","PeriodicalId":16929,"journal":{"name":"Journal of Quaternary Science","volume":"40 2","pages":"355-366"},"PeriodicalIF":1.9,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143370064","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}

{"title":"Paleoearthquakes along the northeastern segment of the Yabrai range-front fault in the Alashan Block, northeast of the Tibetan Plateau","authors":"Chao Xie,&nbsp;Wei Li,&nbsp;Xiang Liu,&nbsp;Hao Dang,&nbsp;Yuemin Huang,&nbsp;Pengwei Long","doi":"10.1002/jqs.3690","DOIUrl":"https://doi.org/10.1002/jqs.3690","url":null,"abstract":"<div>\u0000 \u0000 <p>The Yabrai range-front fault (YRF) is a large-scale fault within the Alashan Block, located northeast of the Tibetan Plateau, which has undergone several surface rupture events on the southwestern and middle segments since the late Quaternary. As no relevant research has been conducted on the northeastern segment, paleoseismic data for this area are lacking, which restricts our overall understanding of the spatiotemporal and intensity distribution of strong earthquakes on the YRF. To address this problem, we conducted investigations based on trench wall interpretation and stratigraphic optically stimulated luminescence ages. Four paleoearthquakes were identified in the middle of the northeastern segment, and occurred after 11.6 ± 0.7 ka and between 11.6 ± 0.7 to 6.9 ± 0.5, 6.9 ± 0.5 to 4.8 ± 0.6 and 4.8 ± 0.6 to 3.9 ± 0.7 ka, respectively. Three paleoearthquake events, one of which occurred at around 23.6 ± 1.6 ka, were identified at the northeastern end of the fault. According to the spatiotemporal distribution of the ruptured events on the YRF, the middle segment may be a long seismic gap (~8 ka), and combined with the status of tectonic stress concentration, this segment can be regarded as a zone of high seismic probability with the ability to produce a magnitude 7.2 earthquake. Furthermore, from the late Pleistocene to early Holocene, cascading ruptures may have occurred on the middle and northeastern segments of the YRF, with magnitudes approaching 7.3. In terms of tectonic relationships, we suggest that the YRF and the Langshan piedmont fault are two independent faults even though they are connected.</p>\u0000 </div>","PeriodicalId":16929,"journal":{"name":"Journal of Quaternary Science","volume":"40 2","pages":"372-384"},"PeriodicalIF":1.9,"publicationDate":"2025-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143370062","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}

{"title":"Environmental history of Lake Mariout at the ‘Marea’/Philoxenite archeological site, northern Egypt, during the Hellenistic–early Islamic periods as seen by fossil diatoms","authors":"ABDELFATTAH A. Zalat,&nbsp;Tomasz Derda,&nbsp;Fabian Welc,&nbsp;Mariusz Gwiazda","doi":"10.1002/jqs.3686","DOIUrl":"https://doi.org/10.1002/jqs.3686","url":null,"abstract":"<p>Diatom analysis of sediments obtained from five cores drilled in Lake Mariout and the ‘Marea’/Philoxenite archeological site southwest of Alexandria, Egypt, allows us to reconstruct the lake's environmental history during the Hellenistic–early Islamic periods. The distribution pattern and the variation in relative abundance of recognized diatoms differentiated each core section into characteristic zones. These zones are interrupted by periods of poor preservation or non-diatom deposition that coincide with fluctuating lake phases of freshwater flooding of the Nile during humid warm episodes and arid phases associated with a reduction in the Nile's water influx that provides Lake Mariout with fresh water. A rising water level of Lake Mariout is estimated from the great abundance of riverine, planktonic <i>Aulacoseira</i> species. A lowering of water level was linked to a high abundance of brackish water taxa and/or periods of non-diatom deposition. Furthermore, the absence of diatoms at two intervals in Core 1 is associated with silty clay with an abundance of gypsum crystals which point to falling water lake levels with increasing temperature during dry periods. However, the intervals of poor preservation or no diatoms in other cores at ‘Marea’/Philoxenite are presumably related to the coarser nature of the sediment that indicate a major lake level lowstand, a high-energy depositional environment together with increased salinity and alkalinity. By comparing the diatom data in the examined cores, it is clear that the <i>Aulacoseira granulata</i> assemblage zone is characteristic of the Roman and Byzantine periods, which reflects relatively rising water levels due to Nile water inflow via the Canopic Nile branch and thus the connection between the canal and lake during this time. Furthermore, the predominance of <i>Aulacoseira granulata</i> with some pollution-tolerant taxa indicates extensive human occupation during the Roman–Byzantine periods, which is evidenced by increased nutrient concentration with higher input of humic substances due to human activities and their influence on the lake ecosystem.</p>","PeriodicalId":16929,"journal":{"name":"Journal of Quaternary Science","volume":"40 2","pages":"287-302"},"PeriodicalIF":1.9,"publicationDate":"2025-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jqs.3686","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143370063","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pre-Marine Isotope Stage 2 glacial activity around the Nevado de Chañi massif in the Central Andes of Argentina and paleoclimate implications","authors":"Mateo A. Martini,&nbsp;Michael R. Kaplan,&nbsp;Lucia Guerra,&nbsp;Estaban Sagredo,&nbsp;Joerg M. Schaefer,&nbsp;Marc W. Caffee","doi":"10.1002/jqs.3687","DOIUrl":"https://doi.org/10.1002/jqs.3687","url":null,"abstract":"<div>\u0000 \u0000 <p>We describe and analyze the glacial geomorphology and new ¹⁰Be cosmogenic surface exposure ages from moraines deposited before Marine Isotope Stage (MIS) 2 around Nevado de Chañi (24°4′ S, 65°45′ W), a north–south-trending massif located in the arid subtropical mountains of northwestern Argentina. We combine these data with previously published ages in order to establish a glacier chronology around the massif and the central Andes. The results show at least three phases of glacier expansions occurred before the global Last Glacial Maximum, (i) during MIS 6, (ii) close to the transition from MIS 4 to MIS 3, and (iii) during mid-late MIS 3. Based on a comparison of the timing of glacier advances with other glacial and paleoclimatic proxies elsewhere, we infer that glaciers grew in this arid region of the subtropical Andes during periods of reduced temperatures and wetter conditions, ultimately due to intensification of the South American Summer Monsoon. In contrast, during MIS 5 no glacial activity was recorded around the massif, and we infer that even if wetter conditions prevailed in the region the temperature was not sufficiently low to support glaciations.</p>\u0000 </div>","PeriodicalId":16929,"journal":{"name":"Journal of Quaternary Science","volume":"40 2","pages":"201-212"},"PeriodicalIF":1.9,"publicationDate":"2024-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143370068","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}

{"title":"From deglaciation to the Early Holocene in the northern Appalachians: A multiproxy palaeoenvironmental record from Scotstown Bog, Québec, Canada","authors":"Leeli Amon,&nbsp;Jeannine-Marie St-Jacques,&nbsp;Ekaterina Ershova,&nbsp;Kathryn E. Hargan,&nbsp;Charlotte Mary Cotter Whyte,&nbsp;Dirk Sachse,&nbsp;Oliver Rach,&nbsp;Matthew C. Peros","doi":"10.1002/jqs.3685","DOIUrl":"https://doi.org/10.1002/jqs.3685","url":null,"abstract":"<p>A multiproxy study of a sediment sequence from a Québec peatbog characterises the rapid and significant environmental responses to changing climatic conditions from the deglaciation of the Laurentide Ice Sheet to the early Holocene period. Scotstown Bog (45°30'45.0“N, 71°11'42.0“W) is an ombrotrophic peatland on the edge of the Appalachian Uplands in southern Québec, Canada. We reconstructed its Late-glacial and early Holocene palaeoenvironments for 14 000–6 000 cal a <span>bp</span> using palaeobotanical (plant macrofossil, macrocharcoal, pollen analyses), faunal (chironomid analysis), sedimentological (grain-size analysis, sediment organic content), and geochemical (sedimentary <i>n</i>-alkanes and hydrogen isotope analyses) methods. We targeted our multiproxy reconstruction on the Late-glacial period, which provides an example of how biota can respond to profound changes in climatic and environmental conditions. A major transition occurred between 13 000 and 12 900 cal a \u0000<span>bp</span>, which is recorded in all palaeoecological proxies. Our reconstruction reveals two major environmental changes at this time. First, the Scotstown basin became isolated from a larger proglacial lake, as shown by sedimentological changes, sediment grain size and chironomid assemblage shift. Second, plant macrofossils and pollen influx show contemporaneous major shifts in the vegetation composition from tundra to tree-line to closed-canopy forested communities.</p>","PeriodicalId":16929,"journal":{"name":"Journal of Quaternary Science","volume":"40 2","pages":"213-228"},"PeriodicalIF":1.9,"publicationDate":"2024-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143370069","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}

{"title":"High-resolution analysis of sediments from Eighteen Mile Swamp (eastern Australia) records its transition from a fluctuating coastal lagoon to stable freshwater swamp","authors":"Jonathan C. Marshall,&nbsp;John Tibby,&nbsp;Patrick Moss,&nbsp;Hailey Martin,&nbsp;Allen Gontz,&nbsp;Annie Lau,&nbsp;Geraldine E. Jacobsen,&nbsp;Haidee Cadd,&nbsp;Patricia S. Gadd,&nbsp;Peter Negus,&nbsp;GLENN B. Mcgregor,&nbsp;Harald Hofmann,&nbsp;Cameron Schulz,&nbsp;Cameron Barr,&nbsp;Sabika Maizma,&nbsp;Mike Hotchkis,&nbsp;Nicole Cloutier","doi":"10.1002/jqs.3677","DOIUrl":"https://doi.org/10.1002/jqs.3677","url":null,"abstract":"<div>\u0000 \u0000 <p>This research documents the paleoenvironmental evolution of Eighteen Mile Swamp on North Stradbroke Island (Minjerribah), Australia, from oscillating coastal lagoon into stable freshwater swamp over the last ca. 1600 years. We analyzed multiple sediment cores via physical description, acid sulfate soil assays, particle size analysis, diatom and pollen assemblages, photosynthetic pigment content, and Itrax XRF spectrometry, alongside ground-penetrating radar cross-sections. This provided a detailed ecological, geochemical and chronological framework, derived from radiocarbon, Pu and ²¹⁰Pb dating, for the wetland's evolution. Results indicate spatial complexity in the timing of a pronounced shift in sedimentary conditions between ca. 300 and 1000 years ago, from estuarine mud to freshwater peat, marked by abrupt chemical and ecological changes. Unexpectedly, there were at least three and potentially many periods of dominant freshwater influence within the primarily estuarine phase, suggesting episodic estuarine closure and freshening by groundwater influx. Results provide critical insights into the complex response of subtropical wetland systems to environmental change, emphasizing the importance of interdisciplinary approaches in understanding both sedimentologic and geomorphic responses in coastal wetlands, and their potential vulnerability to future climate change. The study of Eighteen Mile Swamp is significant as it provides a detailed paleoenvironmental reconstruction that documents the wetland's evolving nature over the past two millennia. This research highlights the importance of understanding historical responses of wetlands to environmental changes, which helps inform their current and future management, conservation and restoration efforts, particularly in the context of climate change and human impacts. This study also serves as a tribute to the late Lynda Petherick, acknowledging her contributions in this field.</p>\u0000 </div>","PeriodicalId":16929,"journal":{"name":"Journal of Quaternary Science","volume":"40 4","pages":"684-710"},"PeriodicalIF":1.9,"publicationDate":"2024-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143945005","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}