Quaternary Research最新文献_第7页

Middle to Late Holocene lake evolution and its links with westerlies and Asian monsoon in the middle part of the Hexi Corridor, NW China 河西走廊中部全新世中晚期湖泊演化及其与西风带和亚洲季风的联系

IF 2.3 3区地球科学

Quaternary Research Pub Date : 2023-07-19 DOI: 10.1017/qua.2023.37

S. Peng, Yu Li, Xueru Zhou, Lu Hao, Hebin Liu, Zhansen Zhang, Haiye Li

{"title":"Middle to Late Holocene lake evolution and its links with westerlies and Asian monsoon in the middle part of the Hexi Corridor, NW China","authors":"S. Peng, Yu Li, Xueru Zhou, Lu Hao, Hebin Liu, Zhansen Zhang, Haiye Li","doi":"10.1017/qua.2023.37","DOIUrl":"https://doi.org/10.1017/qua.2023.37","url":null,"abstract":"\u0000 The interpretation and understanding of the relationship between Middle to Late Holocene climate change in monsoon margins of northwest China with the westerlies and Asian monsoon (AM) remain controversial. Here we present a new multi-proxy sedimentary dataset from the Heihe River basin in the middle part of the Hexi Corridor on the northern margin of the Qinghai-Tibet Plateau (QTP), which is a sensitive zone for the interaction between the westerlies and AM. Fluctuations in grain size, δ13Corg, δ18O, magnetic susceptibility, total organic carbon, total nitrogen, and C/N ratio document regional lake and climate evolution since 5334 cal yr BP. Results show that climate conditions on the millennial timescale are humid in the late Middle Holocene (MH) and dry to wet in the Late Holocene (LH). Combined with the multi-model ensemble simulation from PMIP3-CMIP5, high lake levels and wetter climate in the late MH are closely linked to the strengthening Asian summer monsoon. Simultaneously, the slight wetting trend since the late LH may be the superimposing effect of enhanced westerlies and the weakening Asian winter monsoon. These findings can provide insights into the interpretation of the interaction between the westerlies and AM during the Holocene in East Asia.","PeriodicalId":49643,"journal":{"name":"Quaternary Research","volume":" ","pages":""},"PeriodicalIF":2.3,"publicationDate":"2023-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45495677","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Late Pleistocene Neanderthal exploitation of stable and mosaic ecosystems in northern Iberia shown by multi-isotope evidence 多同位素证据表明，晚更新世尼安德特人对伊比利亚北部稳定和马赛克生态系统的开发

IF 2.3 3区地球科学

Quaternary Research Pub Date : 2023-07-17 DOI: 10.1017/qua.2023.32

S. Pederzani, K. Britton, Jennifer R. Jones, Lucía Agudo Pérez, J. Geiling, A. B. Marín‐Arroyo

{"title":"Late Pleistocene Neanderthal exploitation of stable and mosaic ecosystems in northern Iberia shown by multi-isotope evidence","authors":"S. Pederzani, K. Britton, Jennifer R. Jones, Lucía Agudo Pérez, J. Geiling, A. B. Marín‐Arroyo","doi":"10.1017/qua.2023.32","DOIUrl":"https://doi.org/10.1017/qua.2023.32","url":null,"abstract":"\u0000 During the last glacial period, rapidly changing environments posed substantial challenges to Neanderthal populations in Europe. Southern continental regions, such as Iberia, have been proposed as important climatic “buffer” zones during glacial phases. Contextualising the climatic and ecological conditions Neanderthals faced is relevant to interpreting their resilience. However, records of the environments and ecosystems they exploited across Iberia exhibit temporal and spatial gaps in coverage. Here we provide new evidence for palaeotemperatures, vegetation structure, and prey herbivore ecology during the late Pleistocene (MIS 5–3) in northern Spain, by applying multiple stable isotope tracers (δ18O, δ13C, δ15N, δ34S) to herbivore skeletal remains associated with Neanderthal occupations at Axlor Cave, Bizkaia. The results show little change over time and indicate stable climatic conditions and ecosystems across different occupations. Large within-layer isotopic variability in nitrogen and sulphur suggests the presence of a mosaic environment and a variety of isotopic ecotones that were exploited by Neanderthals and their prey. We implement a combination of carbonate and phosphate δ18O measurements to estimate palaeotemperatures using a cost-effective workflow. We show that the targeted use of phosphate δ18O measurements to anchor summer peak and winter trough areas enables high-precision seasonal palaeoclimatic reconstructions.","PeriodicalId":49643,"journal":{"name":"Quaternary Research","volume":" ","pages":""},"PeriodicalIF":2.3,"publicationDate":"2023-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42109410","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

A conceptual model of multi-scale formation processes of open-air Middle Paleolithic sites in the arid Negev desert, Israel 以色列干旱的内盖夫沙漠中旧石器时代中期露天遗址多尺度形成过程的概念模型

IF 2.3 3区地球科学

Quaternary Research Pub Date : 2023-07-12 DOI: 10.1017/qua.2023.31

Maya Oron, Joel Roskin, Y. Avni, N. Porat, E. Aladjem, D. Yegorov, J. Vardi, E. Hovers

{"title":"A conceptual model of multi-scale formation processes of open-air Middle Paleolithic sites in the arid Negev desert, Israel","authors":"Maya Oron, Joel Roskin, Y. Avni, N. Porat, E. Aladjem, D. Yegorov, J. Vardi, E. Hovers","doi":"10.1017/qua.2023.31","DOIUrl":"https://doi.org/10.1017/qua.2023.31","url":null,"abstract":"\u0000 Open-air surface accumulations and scatters of material cultural remains often are perceived as less-reliable archaeological archives, where it is difficult to distinguish anthropogenic versus geogenic formation processes or to assess their specific effects on the integrity of archaeological records. Here we analyze the depositional histories of three Middle Paleolithic open-air sites in the Negev desert of Israel, combining archaeological and geomorphological methods to create a conceptual model of multi-scale effects on the archaeological remains. Relying on the long research history in archaeology and geomorphology in the Negev, we show that integration of archaeological and geomorphological methodologies provides nuanced insights to our understanding of the archaeological record. The links established between regional and local geomorphic processes and lithic taphonomy by applying such a multi-scale analysis further allow back-tracking environmental processes from flint taphonomic attributes. Placing each site within the range of regional and local processes of exposure and burial by using informed and critically evaluated data helps to create a robust regional archaeological data base. We suggest that our approach is useful in other arid zone contexts and may have implications for understanding Pleistocene population movements across such regions.","PeriodicalId":49643,"journal":{"name":"Quaternary Research","volume":" ","pages":""},"PeriodicalIF":2.3,"publicationDate":"2023-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45436477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A ca. 39,000-year record of vegetation and climate change from the margin of the Namib Sand Sea 纳米布沙海边缘约39000年的植被和气候变化记录

IF 2.3 3区地球科学

Quaternary Research Pub Date : 2023-07-11 DOI: 10.1017/qua.2023.29

B. Chase, A. Boom, A. Carr, M. Meadows, Sophak Lim

{"title":"A ca. 39,000-year record of vegetation and climate change from the margin of the Namib Sand Sea","authors":"B. Chase, A. Boom, A. Carr, M. Meadows, Sophak Lim","doi":"10.1017/qua.2023.29","DOIUrl":"https://doi.org/10.1017/qua.2023.29","url":null,"abstract":"\u0000 This paper presents the first continuous multi-proxy record of climate and vegetation change from the central Namib Desert extending over much of the last ca. 39,000 years. Derived from rock hyrax middens, evidence from stable carbon and nitrogen isotopes, pollen, and microcharcoal reveals significant differences between glacial-age and Holocene climates and vegetation types. Although still arid to semi-arid, conditions during Marine Oxygen Isotope Stages (MIS) 2–3 were significantly more humid than in the Late Holocene. Considerable associated vegetation change is apparent, with cooler temperatures and higher/more-regular rainfall promoting the westward expansion of relatively mesic shrubby karroid vegetation during MIS 2–3. With the last glacial–interglacial transition, increasing temperatures and less/less-regular rainfall resulted in marked vegetation changes and the establishment of current xeric grasslands. The inter-plant spacing of the karroid vegetation promoted by wetter conditions does not carry fire effectively, and the microcharcoal record indicates that more extensive fires may develop only with the development of grassier vegetation under drier conditions. As with other terrestrial records from the Namib Desert and environs, no Cape flora elements were found to support previously hypothesised expansion of the Fynbos Biome during the last glacial period.","PeriodicalId":49643,"journal":{"name":"Quaternary Research","volume":" ","pages":""},"PeriodicalIF":2.3,"publicationDate":"2023-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46784980","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Climate variability in the northern Levant from the highly resolved Qadisha record (Lebanon) during the Holocene optimum 全新世最佳时期高分辨率Qadisha记录（黎巴嫩）中黎凡特北部的气候变化

IF 2.3 3区地球科学

Quaternary Research Pub Date : 2023-07-03 DOI: 10.1017/qua.2023.24

C. Nehme, S. Verheyden, T. Kluge, F. Nader, R. Edwards, Hai Cheng, E. Eiche, P. Claeys

{"title":"Climate variability in the northern Levant from the highly resolved Qadisha record (Lebanon) during the Holocene optimum","authors":"C. Nehme, S. Verheyden, T. Kluge, F. Nader, R. Edwards, Hai Cheng, E. Eiche, P. Claeys","doi":"10.1017/qua.2023.24","DOIUrl":"https://doi.org/10.1017/qua.2023.24","url":null,"abstract":"\u0000 New stalagmites from Qadisha Cave (Lebanon) located at 1720 m above sea level provide a high-resolution and well-dated record for northern Mount Lebanon. The stalagmites grew discontinuously from 9.2 to 5.7 and at 3.5 ka, and they show a tendency to move from a more negative oxygen isotope signal at ~9.1 ka to a more positive signal at ~5.8 ka. Such a trend reflects a change from a wetter to a drier climate at high altitudes. The δ13C signal shows rapid shifts throughout the record and a decreasing trend toward more negative values in the mid-Holocene, suggesting enhanced soil activity. In the short-term trend, Qadisha stalagmites record rapid dry/wet changes on centennial scales, with a tendency to more rapid dry events toward the mid-Holocene. Such changes are characterized by overall good agreement between both geochemical proxies and stalagmite growth and might be affected by the seasonal variations in snow cover. The Qadisha record is in good agreement with other Levantine records, showing more humid conditions from 9 to 7 ka. After 7 ka, a drier climate seems to affect sites at both low- and high-altitude areas. The Qadisha record reflects uniquely mountainous climate characteristics compared with other records, specifically the effect of snow cover and its duration regulating the effective infiltration.","PeriodicalId":49643,"journal":{"name":"Quaternary Research","volume":"1 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2023-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41494449","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Holocene pollen-inferred climate reconstruction for Vermont, USA 美国佛蒙特州全新世花粉气候重建

IF 2.3 3区地球科学

Quaternary Research Pub Date : 2023-07-03 DOI: 10.1017/qua.2023.28

L. Grigg, I. Stefanescu, B. Shuman, W. Oswald

{"title":"A Holocene pollen-inferred climate reconstruction for Vermont, USA","authors":"L. Grigg, I. Stefanescu, B. Shuman, W. Oswald","doi":"10.1017/qua.2023.28","DOIUrl":"https://doi.org/10.1017/qua.2023.28","url":null,"abstract":"\u0000 A 13.0 cal ka BP pollen record from Twin Ponds, Vermont, provides new insights into the climate history of the northeastern United States. Modern analogs were used to produce qualitative and quantitative climate reconstructions for Twin Ponds. The Twin Ponds record was compared with nearby Knob Hill Pond to develop a Vermont reconstruction that was compared with reconstructions from two sites at a similar latitude. Postglacial warming at 11.5 cal ka BP followed a cool, wet Younger Dryas and was the largest temperature change of the record. The warmest, driest conditions occurred at ca. 9.0 cal ka BP, followed by an increase in moisture. Latitudinal and elevational shifts in the location of modern analogs from 5.7 to 4.0 cal ka BP were used to infer cooling and increased moisture during the Tsuga canadensis decline. Analysis of the timing of pollen events between the two Vermont sites suggests a more rapid decline in T. canadensis at the more northern Knob Hill Pond and further supports the possibility that colder temperatures contributed to this event. The other northern sites show similar trends until 2.5 cal ka BP, when precipitation in the easternmost site diverges, indicating the establishment of modern climatic gradients.","PeriodicalId":49643,"journal":{"name":"Quaternary Research","volume":" ","pages":""},"PeriodicalIF":2.3,"publicationDate":"2023-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42073533","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Late Holocene climate reconstruction from the high-altitude Lake Gölcük sedimentary records, Isparta (SW Anatolia) Isparta (SW Anatolia)高海拔湖Gölcük沉积记录的晚全新世气候重建

IF 2.3 3区地球科学

Quaternary Research Pub Date : 2023-06-26 DOI: 10.1017/qua.2023.26

Iliya Bauchi Danladi, Sena Akçer-Ön, T. Litt, Z. Ön, L. Wacker

{"title":"A Late Holocene climate reconstruction from the high-altitude Lake Gölcük sedimentary records, Isparta (SW Anatolia)","authors":"Iliya Bauchi Danladi, Sena Akçer-Ön, T. Litt, Z. Ön, L. Wacker","doi":"10.1017/qua.2023.26","DOIUrl":"https://doi.org/10.1017/qua.2023.26","url":null,"abstract":"Abstract A high-resolution multiproxy lake sediment dataset, comprising lithology, radiography, μXRF elemental, magnetic susceptibility (MS), δ13C, and δ18O measurements since ca. AD 400 is presented in this study. Changes in lithology, radiography, magnetic susceptibility (MS), δ13C, and δ18O reflect wet/dry climate periods, whereas variability in log(Ca/K) can reflect warm/cold climate periods. Analyses of the multiproxy results allow the distinction of several climate periods, which may be associated with climatic phenomena such as changes in North Atlantic Oscillation (NAO) and/or solar activity. The influence of NAO−/NAO+ (negative/positive) is suggested to be related with the southward/northward displacement of the storm tracks resulting from the NAO−/NAO+ phases. For solar activity, the influence is explained through a direct increase in solar heating leading to calcite precipitation. The Dark Ages Cold Period (DACP, AD 450–750) reflects cold-dry climate conditions at this site, indicative of a positive North Atlantic Oscillation (NAO+) and low solar activity. The Medieval Climate Anomaly (MCA, AD 950–1250) exhibits wet-dry-wet and warm-cold-warm climate conditions. The wet/dry periods likely are associated with NAO−/NAO+, respectively, and the warm/cold period may reflect relatively high/low solar activity. The Little Ice Age (LIA, AD 1400–1850) is characterized by dry and cold climate conditions, suggesting the influence of NAO+ and low solar activity. Comparison of the results of this study with local and regional results suggests a generally similar climate pattern, which is indicative of similar climate mechanisms. The contradictions can be associated with age-related uncertainties, orographic differences, and/or other regional teleconnections.","PeriodicalId":49643,"journal":{"name":"Quaternary Research","volume":"115 1","pages":"120 - 133"},"PeriodicalIF":2.3,"publicationDate":"2023-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"57085251","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Massive ground ice of glacial meltwater origin in raised marine-deltaic sediments, Fosheim Peninsula, high Arctic Canada 加拿大高北极福斯海姆半岛隆起海洋三角洲沉积物中冰川融水成因的大块地面冰

IF 2.3 3区地球科学

Quaternary Research Pub Date : 2023-06-22 DOI: 10.1017/qua.2023.30

Cameron Roy, Kethra Campbell-Heaton, D. Lacelle, W. Pollard

{"title":"Massive ground ice of glacial meltwater origin in raised marine-deltaic sediments, Fosheim Peninsula, high Arctic Canada","authors":"Cameron Roy, Kethra Campbell-Heaton, D. Lacelle, W. Pollard","doi":"10.1017/qua.2023.30","DOIUrl":"https://doi.org/10.1017/qua.2023.30","url":null,"abstract":"\u0000 In the Canadian high Arctic, tabular massive ground ice is found extensively throughout the Eureka Sound Lowlands (ESL). This study evaluates the development of tabular massive ice in raised marine-deltaic sediments of the ESL based on new cryostratigraphic data from sites found between the coastline and the Holocene marine limit. At all sites, massive ice is found below laminated fine-grained marine sediments, and the upper contact between the ice and the overlying marine sediments is conformable and gradational. The concentration of major ions in the massive ice is orders of magnitude higher than expected for glacial ice, but Na/Cl molar ratios vary following elevation: the higher-elevation site has ratios similar to glacial ice, but sites at lower elevations have ratios closer to seawater. The δ18O values of the ice indicate that the main source of water is glacial meltwater but the δD-δ18O regression slope values suggest that the ice formed in an open system while receiving an influx that had a substantially different isotopic signature than the initial reservoir. The development of massive ice in the marine-deltaic sediments involves glacial meltwater recharging an aquifer beneath the Holocene marine sediments with a contribution of 1–10% of seawater.","PeriodicalId":49643,"journal":{"name":"Quaternary Research","volume":" ","pages":""},"PeriodicalIF":2.3,"publicationDate":"2023-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46051899","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Implications of submonthly oxygen and carbon isotope variations in late Pleistocene Melanopsis shells for regional and local hydroclimate in the upper Jordan River valley 晚更新世黑藻壳亚月氧碳同位素变化对上约旦河流域区域和局部水文气候的意义

IF 2.3 3区地球科学

Quaternary Research Pub Date : 2023-06-20 DOI: 10.1017/qua.2023.25

A. Rice, Elizabeth Bunin, B. Plessen, G. Sharon, S. Mischke

{"title":"Implications of submonthly oxygen and carbon isotope variations in late Pleistocene Melanopsis shells for regional and local hydroclimate in the upper Jordan River valley","authors":"A. Rice, Elizabeth Bunin, B. Plessen, G. Sharon, S. Mischke","doi":"10.1017/qua.2023.25","DOIUrl":"https://doi.org/10.1017/qua.2023.25","url":null,"abstract":"Abstract Many water-stressed regions of the globe have a highly seasonal precipitation regime. However, seasonality in the past and under changing climates is little studied. Submonthly records of sclerochronological δ18O and δ13C values of Melanopsis shells from the Jordan River Dureijat archaeological site (JRD) in the upper Jordan River valley presented here document the hydrology of paleo-Lake Hula. These records were assessed for changes in seasonal hydrology in the lake and compared with modern shells collected from present-day waterbodies in northern Israel and with models of δ18Oshell. Results from shells in sediments dating from the last glacial maximum (LGM) to the Bølling-Allerød imply changes in waterbody size that qualitatively parallel changes in the late Pleistocene Lake Lisan levels; Hula Lake was well buffered when Lake Lisan stood at a high stand and poorly buffered when water levels were lower. Furthermore, data from shells dated to the LGM suggest inflowing water with lower δ18O values than local rainfall, providing evidence for a greater proportion of snow in the catchment than today. Reconstruction of water δ18O and mixing-model calculations suggest that snowmelt contribution to spring water during the LGM may have been more than twice the amount in the modern-day catchment.","PeriodicalId":49643,"journal":{"name":"Quaternary Research","volume":"115 1","pages":"146 - 159"},"PeriodicalIF":2.3,"publicationDate":"2023-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42948676","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Onset of dune construction based on archaeological evidence, White Sands, New Mexico 基于考古证据的沙丘建设的开始，白沙，新墨西哥州

IF 2.3 3区地球科学

Quaternary Research Pub Date : 2023-06-19 DOI: 10.1017/qua.2023.22

V. Holliday, Matthew T. Cuba, Way-Yuan Lee, Jason D. Windingstad, Brendan Fenerty, D. Bustos

{"title":"Onset of dune construction based on archaeological evidence, White Sands, New Mexico","authors":"V. Holliday, Matthew T. Cuba, Way-Yuan Lee, Jason D. Windingstad, Brendan Fenerty, D. Bustos","doi":"10.1017/qua.2023.22","DOIUrl":"https://doi.org/10.1017/qua.2023.22","url":null,"abstract":"Abstract The White Sands dune field is the largest gypsum dune system in the world, derived from deflation of paleo-Lake Otero deposits. Understanding the timing of initial dune construction, and therefore lake deflation, is critical for understanding regional landscape evolution, including the history of lake desiccation. The onset of dune construction is currently estimated at ~8000 to 6500 cal yr BP, but numerical age control is limited. Archaeological evidence reported here indicates two older phases of gypsum dune construction. An archaeological site draped over a parabolic dune south of the main dune body contains artifacts dating to >12,200 cal yr BP, providing an upper age limit for the landform. Another site buried within a remnant of the main dune field yielded six statistically identical radiocarbon dates averaging ~8770 cal yr BP. The initial phase of terminal Pleistocene deflation and parabolic dune construction was perhaps localized but correlates with a period of regional aridity. Barchans and crescentic ridges comprising the main dune body developed in the Early Holocene in response to elevated salinity in local ground water and extensive exposures of gypsum available for deflation, likely due to aridity.","PeriodicalId":49643,"journal":{"name":"Quaternary Research","volume":"115 1","pages":"58 - 66"},"PeriodicalIF":2.3,"publicationDate":"2023-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43774732","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2