Quaternary Research最新文献_第2页

Modeling post-Pleistocene megafauna extinctions as complex social-ecological systems 将更新世后巨型动物灭绝模拟为复杂的社会生态系统

IF 2.3 3区地球科学

Quaternary Research Pub Date : 2024-03-14 DOI: 10.1017/qua.2024.6

Miriam C. Kopels, Isaac I. Ullah

{"title":"Modeling post-Pleistocene megafauna extinctions as complex social-ecological systems","authors":"Miriam C. Kopels, Isaac I. Ullah","doi":"10.1017/qua.2024.6","DOIUrl":"https://doi.org/10.1017/qua.2024.6","url":null,"abstract":"The role of human hunting behavior versus climate change in the mass extinction of megafauna during the Late Quaternary is much debated. To move beyond monocausal arguments, we treat human–megafauna–environment relationships as social–ecological systems from a complex adaptive systems perspective, to create an agent-based model that tests how human hunting may interact with environmental stress and animal life history to affect the probability of extinction. Using the extinction of Syncerus antiquus in South Africa at 12–10 ka as a loose inspirational case study, we parameterized a set of experiments to identify cross-feedbacks among environmental dynamics, prey life history, and human hunting pressure that affect extinction probability in a non-linear way. An important anthropogenic boundary condition emerges when hunting strategies interrupt prey animal breeding cycles. This effect is amplified in patchy, highly seasonal environments to increase the chances of extinction. This modeling approach to human behavior and biodiversity loss helps us understand how these types of cross-feedback effects and boundary conditions emerge as system components interact and change. We argue that this approach can help translate archaeological data and insight about past extinction for use in understanding and combating the current mass extinction crisis.","PeriodicalId":49643,"journal":{"name":"Quaternary Research","volume":"13 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2024-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140128567","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 new MIS 5 to MIS 2 speleothem record from Sandkraal Cave on the South African Cape south coast 南非开普南海岸 Sandkraal 洞穴的新 MIS 5 至 MIS 2 岩浆记录

IF 2.3 3区地球科学

Quaternary Research Pub Date : 2024-03-12 DOI: 10.1017/qua.2024.3

Kerstin Braun, Miryam Bar-Matthews, Avner Ayalon, Alan Matthews, Tami Zilberman, Natalya Zolotova, Richard M. Cowling, Panagiotis Karkanas, Hayley C. Cawthra, Erich C. Fisher, R. Lawrence Edwards, Xianglei Li, Curtis W. Marean

{"title":"A new MIS 5 to MIS 2 speleothem record from Sandkraal Cave on the South African Cape south coast","authors":"Kerstin Braun, Miryam Bar-Matthews, Avner Ayalon, Alan Matthews, Tami Zilberman, Natalya Zolotova, Richard M. Cowling, Panagiotis Karkanas, Hayley C. Cawthra, Erich C. Fisher, R. Lawrence Edwards, Xianglei Li, Curtis W. Marean","doi":"10.1017/qua.2024.3","DOIUrl":"https://doi.org/10.1017/qua.2024.3","url":null,"abstract":"We present new stable oxygen and carbon isotope composite records (δ18O, δ13C) of speleothems from Sandkraal Cave 1 (SK1) on the South African south coast for the time interval between 104 and 18 ka (with a hiatus between 48 and 41 ka). Statistical comparisons using kernel-based correlation analyses and semblance analyses based on continuous wavelet transforms inform the relationships of the new speleothem records to other proxies and their changes through time. Between 105 and ~70 ka, changes of speleothem δ18O values at SK1 are likely related to rainfall seasonality. Variations of δ13C values are associated with changes of vegetation density, prior carbonate precipitation (PCP), CO2 degassing in the cave, and possibly variations of the abundance of C3 and C4 grasses in the vegetation. The relationships of δ18O with other proxies shift between ~70 and 48 ka (Marine Isotope Stages 4–3) so that both stable isotope records now reflect CO2 degassing, evaporation, and PCP. Similar relationships also continue after the hiatus for the deposition phase between 42 and 18 ka. Our findings support modeling results suggesting drier conditions in the study area when the Southern Hemisphere westerlies are shifted north and the paleo–Agulhas Plain is exposed.","PeriodicalId":49643,"journal":{"name":"Quaternary Research","volume":"26 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2024-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140106379","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

Cryogenic features and stages in Late Quaternary subaerial sediments of the Lower Volga region 伏尔加河下游地区第四纪晚期次生沉积物的低温特征和阶段

IF 2.3 3区地球科学

Quaternary Research Pub Date : 2024-03-11 DOI: 10.1017/qua.2024.7

N.A. Taratunina, R.N. Kurbanov, V.V. Rogov, I.D. Streletskaya, T.A. Yanina, D.A. Solodovnikov, T. Stevens

{"title":"Cryogenic features and stages in Late Quaternary subaerial sediments of the Lower Volga region","authors":"N.A. Taratunina, R.N. Kurbanov, V.V. Rogov, I.D. Streletskaya, T.A. Yanina, D.A. Solodovnikov, T. Stevens","doi":"10.1017/qua.2024.7","DOIUrl":"https://doi.org/10.1017/qua.2024.7","url":null,"abstract":"Situated at the southernmost limits of the late Pleistocene Eurasian permafrost zone, the loess–paleosol sequences of the Lower Volga region contain numerous traces of cryogenesis. Cryogenic features are represented by thin vertical wedges in loess and paleosols, and involutions and wedges in alluvial deposits. Here we describe and interpret four stages of cryogenesis during the late Pleistocene, based on analysis of cryogenic structure morphology, morphoscopy of quartz grains, and micromorphology of subaerial sediments, in addition to calculation of the Cryogenic Weathering Index and a new luminescence chronology derived from published ages. These stages differ in type and distribution of cryostructures and formed in different paleogeographic conditions. Stage I, dated 95–90 ka (Marine Isotope Stage [MIS] 5b), is characterized by the existence of continuous permafrost in northern part of the Lower Volga valley. Stage II (75–70 ka, MIS 5a/MIS 4) is characterized by dry and cold conditions and widespread permafrost. During stage III (52–45 ka, MIS 3b/c), the permafrost was thin and of sporadic distribution. Stage IV (37–35 ka, MIS 3a) is characterized by thin and rare sporadic permafrost. The processes of cryogenic transformation of sediments in the region during these stages took place under both permafrost and seasonal frost conditions. The results obtained significantly improve current understanding of the extent of the permafrost in the south of the East European Plain during the late Pleistocene.","PeriodicalId":49643,"journal":{"name":"Quaternary Research","volume":"50 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2024-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140097389","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

The Pleistocene ice-sheet dynamics in north-central Poland based on magnetic fabrics of tills and landform analysis 基于堆积物磁性结构和地貌分析的波兰中北部更新世冰盖动力学

IF 2.3 3区地球科学

Quaternary Research Pub Date : 2024-02-26 DOI: 10.1017/qua.2024.2

Artur Teodorski

{"title":"The Pleistocene ice-sheet dynamics in north-central Poland based on magnetic fabrics of tills and landform analysis","authors":"Artur Teodorski","doi":"10.1017/qua.2024.2","DOIUrl":"https://doi.org/10.1017/qua.2024.2","url":null,"abstract":"This research was carried out in north-central Poland, which was occupied by the ice sheet of the Saalian (Marine Isotope Stage [MIS] 6) and Upper Stadial of the Weichselian (MIS 2) glaciation. The application of the anisotropy of magnetic susceptibility (AMS) method supported by a digital elevation model (DEM) analysis of the orientation of glacial landforms allowed for the reconstruction of ice-sheet extent and ice movement directions of these two Pleistocene glaciations. The research used an innovative method of collecting AMS till samples from the glacial plateau areas. Based on the research, it was found that during the general recession of the ice sheet of the Saalian glaciation, a previously undescribed glacial transgression occurred, characterized by a different direction of ice-sheet movement. On the basis of detailed geomorphological studies of the area of terminal moraines, previously described in fragments, the maximum extent of the ice sheet during the Weichselian glaciation was clarified. The recession of the ice sheet of the Weichselian glaciation from the area of north-central Poland took place in four regressive or transgressive–regressive stages with variable directions of ice-sheet movement. The results obtained indicate the great potential of the AMS method in paleoenvironmental studies of glaciated areas.","PeriodicalId":49643,"journal":{"name":"Quaternary Research","volume":"9 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2024-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139968496","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

The Enmynveem mammoth and vegetation changes in arctic Chukotka during the Late Quaternary 第四纪晚期Enmynveem猛犸象和楚科奇北极地区的植被变化

IF 2.3 3区地球科学

Quaternary Research Pub Date : 2024-02-26 DOI: 10.1017/qua.2024.1

Anatoly V. Lozhkin, P.M. Anderson

{"title":"The Enmynveem mammoth and vegetation changes in arctic Chukotka during the Late Quaternary","authors":"Anatoly V. Lozhkin, P.M. Anderson","doi":"10.1017/qua.2024.1","DOIUrl":"https://doi.org/10.1017/qua.2024.1","url":null,"abstract":"Mining operations in the Enmynveem valley, northeastern Siberia, exposed a well-preserved right hind leg of Mammuthus primigenius (woolly mammoth), dated to ca. 37,500 cal yr BP. The leg had a fracture that crosscut the midsections of the tibia and fibula. Additional skeletal and soft tissue remains, including two mummified adults (Berezovka, ca. 47,200 cal yr BP; Bolshoi Lyakhovsky, ca. 37,000 cal yr BP), document the presence of mammoths in interior mountain valleys and across both northern and southern coasts of far northeastern Siberia during Marine Isotope Stage (MIS) 3. A mosaic of herb-dominated tundra communities characterized the vegetation of the Enmynveem site during late to middle MIS 3 and MIS 2 (ca. 37,000–17,000 cal yr BP). Shrubs were limited to Salix during the late Pleistocene, whereas Betula also may have been present in sheltered sites during MIS 3. Herb communities remained dominant during the late Pleistocene–Early Holocene transition, although shrub Betula increased during this interval. By ca. 10,200 cal yr BP, the vegetation was Betula–Alnus shrub tundra. Larix and Pinus pumila were established in the valley by ca. 8700 cal yr BP and ca. 5700 cal yr BP, respectively.","PeriodicalId":49643,"journal":{"name":"Quaternary Research","volume":"173 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2024-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139968481","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

Tropical vegetation productivity and atmospheric methane over the last 40,000 years from model simulations and stalagmites in Sulawesi, Indonesia 从模型模拟和印度尼西亚苏拉威西岛石笋看过去 4 万年的热带植被生产力和大气甲烷含量

IF 2.3 3区地球科学

Quaternary Research Pub Date : 2024-02-26 DOI: 10.1017/qua.2023.75

Claire E. Krause, Alena K. Kimbrough, Michael K. Gagan, Peter O. Hopcroft, Gavin B. Dunbar, Wahyoe S. Hantoro, John C. Hellstrom, Hai Cheng, R. Lawrence Edwards, Henri Wong, Bambang W. Suwargadi, Paul J. Valdes, Hamdi Rifai

{"title":"Tropical vegetation productivity and atmospheric methane over the last 40,000 years from model simulations and stalagmites in Sulawesi, Indonesia","authors":"Claire E. Krause, Alena K. Kimbrough, Michael K. Gagan, Peter O. Hopcroft, Gavin B. Dunbar, Wahyoe S. Hantoro, John C. Hellstrom, Hai Cheng, R. Lawrence Edwards, Henri Wong, Bambang W. Suwargadi, Paul J. Valdes, Hamdi Rifai","doi":"10.1017/qua.2023.75","DOIUrl":"https://doi.org/10.1017/qua.2023.75","url":null,"abstract":"Recent research has shown the potential of speleothem δ13C to record a range of environmental processes. Here, we report on 230Th-dated stalagmite δ13C records for southwest Sulawesi, Indonesia, over the last 40,000 yr to investigate the relationship between tropical vegetation productivity and atmospheric methane concentrations. We demonstrate that the Sulawesi stalagmite δ13C record is driven by changes in vegetation productivity and soil respiration and explore the link between soil respiration and tropical methane emissions using HadCM3 and the Sheffield Dynamic Global Vegetation Model. The model indicates that changes in soil respiration are primarily driven by changes in temperature and CO2, in line with our interpretation of stalagmite δ13C. In turn, modelled methane emissions are driven by soil respiration, providing a mechanism that links methane to stalagmite δ13C. This relationship is particularly strong during the last glaciation, indicating a key role for the tropics in controlling atmospheric methane when emissions from high-latitude boreal wetlands were suppressed. With further investigation, the link between δ13C in stalagmites and tropical methane could provide a low-latitude proxy complementary to polar ice core records to improve our understanding of the glacial–interglacial methane budget.","PeriodicalId":49643,"journal":{"name":"Quaternary Research","volume":"15 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2024-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139968760","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

Temperature fluctuations and ventilation dynamics induced by atmospheric pressure variations in Lamalunga Cave (Apulia, Italy) and their influences on speleothem growth 拉马伦加洞穴（意大利阿普利亚）大气压力变化引起的温度波动和通风动态及其对岩浆生长的影响

IF 2.3 3区地球科学

Quaternary Research Pub Date : 2024-02-23 DOI: 10.1017/qua.2023.70

Andrea Borsato, Marco Samadelli, Vincenzo Martimucci, Giorgio Manzi

{"title":"Temperature fluctuations and ventilation dynamics induced by atmospheric pressure variations in Lamalunga Cave (Apulia, Italy) and their influences on speleothem growth","authors":"Andrea Borsato, Marco Samadelli, Vincenzo Martimucci, Giorgio Manzi","doi":"10.1017/qua.2023.70","DOIUrl":"https://doi.org/10.1017/qua.2023.70","url":null,"abstract":"Lamalunga Cave (Altamura, Southern Italy) is renowned for the discovery in 1993 of an excellently preserved Neanderthal skeleton. Given the importance of the findings and the potential use of Lamalunga speleothems for paleoclimate reconstructions, a detailed monitoring program was undertaken to investigate the connections between microclimate parameters and speleothem growth. The cave air temperature is characterized by annual sinusoidal cycles with increasing phase shift and decreasing thermal amplitude from ± 2.1°C to ± 0.04°C as a function of increasing rock overburden, and daily to sub-daily cycles induced by surface air pressure (SAP) variations characterized by strong 24-hour and 12-hour solar harmonic frequencies, with thermal amplitude decreasing from 0.0054°C to 0.0021°C in the deeper parts of the cave. The ventilation regime is mainly controlled by SAP fluctuations. Fast SAP rises can trigger “emptying events” during which most of the cave air is replaced and the CO2 concentration falls towards near-atmospheric values. The steady and gentle ventilation created by SAP fluctuations also influences the growth and morphology of calcite coralloids, with larger popcorn assemblages concentrated in the northern galleries and delicate branching morphologies prevailing along the South Gallery where stable temperature and relative humidity conditions occur. The study is a seminal example of how high-precision measurements of cave air temperature can provide a wealth of information on cave ventilation and thermal regime and provide valuable support for robust paleoclimate reconstruction from speleothems.","PeriodicalId":49643,"journal":{"name":"Quaternary Research","volume":"75 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2024-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139956942","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

Update and synthesis of the available archaeological and geochronological data for the Lower Paleolithic site of Loreto at Venosa (Basilicata, Italy) 维诺萨的洛雷托旧石器时代下层遗址（意大利巴西利卡塔省）现有考古和地质年代数据的更新与综述

IF 2.3 3区地球科学

Quaternary Research Pub Date : 2024-02-23 DOI: 10.1017/qua.2023.71

Alison Pereira, Marie-Hélène Moncel, Sébastien Nomade, Pierre Voinchet, Qingfeng Shao, Christophe Falguères, David Lefèvre, Jean Paul Raynal, Vincent Scao, Marcello Piperno, Suzanne Simone, Jean Jacques Bahain

{"title":"Update and synthesis of the available archaeological and geochronological data for the Lower Paleolithic site of Loreto at Venosa (Basilicata, Italy)","authors":"Alison Pereira, Marie-Hélène Moncel, Sébastien Nomade, Pierre Voinchet, Qingfeng Shao, Christophe Falguères, David Lefèvre, Jean Paul Raynal, Vincent Scao, Marcello Piperno, Suzanne Simone, Jean Jacques Bahain","doi":"10.1017/qua.2023.71","DOIUrl":"https://doi.org/10.1017/qua.2023.71","url":null,"abstract":"In the Basilicata region, located in southern Italy and known for hosting among the first occurrences of the Acheulean culture in southwestern Europe, the Lower Paleolithic site of Loreto at Venosa is located less than a kilometer from the emblematic site of Notarchirico and less than 25 km from Cimitero di Atella. The Loreto site has not been studied as thoroughly as the two other sites and, although geological investigations have been carried out in the Venosa basin, no direct numerical dating has ever been published for the three archaeological levels brought to light during the excavation campaigns. We present a multi-method geochronological approach combining ESR/U-series, ESR, and 40Ar/39Ar permitting to refine the age of the most ancient archaeological level (A) of the Loreto site. These data allow us to propose an MIS 13 age for this level, in accordance with previous hypotheses based on geological and paleontological data. We also propose a technical review of the lithic tools preserved in the collection of the National Archaeological Museum of Venosa to integrate Loreto in the evolution scheme of the European Acheulean techno-complex emergence and diffusion.","PeriodicalId":49643,"journal":{"name":"Quaternary Research","volume":"66 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2024-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139955192","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

Holocene relative sea-level changes along the Caribbean and Pacific coasts of northwestern South America 南美洲西北部加勒比海和太平洋沿岸全新世相对海平面的变化

IF 2.3 3区地球科学

Quaternary Research Pub Date : 2024-02-16 DOI: 10.1017/qua.2023.73

Juan F. Paniagua-Arroyave, Giorgio Spada, Daniele Melini, José F. Duque-Trujillo

{"title":"Holocene relative sea-level changes along the Caribbean and Pacific coasts of northwestern South America","authors":"Juan F. Paniagua-Arroyave, Giorgio Spada, Daniele Melini, José F. Duque-Trujillo","doi":"10.1017/qua.2023.73","DOIUrl":"https://doi.org/10.1017/qua.2023.73","url":null,"abstract":"Predicting coastal change depends upon our knowledge of postglacial relative sea-level variability, partly controlled by glacio-isostatic responses to ice-sheet melting. Here, we reconstruct the postglacial relative sea-level changes along the Caribbean and Pacific coasts of northwestern South America by numerically solving the sea-level equation with two scenarios of mantle viscosity: global standard average and high viscosity. Our results with the standard model (applicable to the Pacific coast) agree with earlier studies by indicating a mid-Northgrippian high stand of ~2 m. The high-viscosity simulation (relevant to the Caribbean coast) shows that the transition from far- to intermediate-field influence of the Laurentide Ice Sheet occurs between Manzanillo del Mar and the Gulf of Morrosquillo. South of this location, the Colombian Caribbean coast has exhibited a still stand with a nearly constant Holocene relative sea level. By analyzing our simulations considering sea-level indicators, we argue that tectonics is more prominent than previously assumed, especially along the Caribbean coast. This influence prevents a simplified view of regional relative sea-level changes on the northwestern South American coast.","PeriodicalId":49643,"journal":{"name":"Quaternary Research","volume":"45 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2024-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139753634","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

Lateral and temporal constraints on the depositional history of the Bonneville Salt Flats, Utah, USA 美国犹他州邦纳维尔盐滩沉积史的横向和时间制约因素

IF 2.3 3区地球科学

Quaternary Research Pub Date : 2024-02-16 DOI: 10.1017/qua.2023.79

Jeremiah A. Bernau, Brenda B. Bowen, Charles G. Oviatt, Donald L. Clark, Isaac A. Hart

{"title":"Lateral and temporal constraints on the depositional history of the Bonneville Salt Flats, Utah, USA","authors":"Jeremiah A. Bernau, Brenda B. Bowen, Charles G. Oviatt, Donald L. Clark, Isaac A. Hart","doi":"10.1017/qua.2023.79","DOIUrl":"https://doi.org/10.1017/qua.2023.79","url":null,"abstract":"The depositional history of the Bonneville Salt Flats, a perennial saline pan in Utah's Bonneville basin, has poor temporal constraints, and the climatic and geomorphic conditions that led to saline pan formation there are poorly understood. We explore the late Pleistocene to Holocene depositional record of Bonneville Salt Flats cores. Our data challenge the assumption that the saline pan formed from the desiccation of Lake Bonneville, the largest late Pleistocene lake in the Great Basin, which covered this area from 30 to 13 cal ka BP. We test two hypotheses: whether climatic transitions from (1) wet to arid or (2) arid to wet led to saline pan deposition. We describe the depositional record with radiocarbon dating, sedimentological structures, mineralogy, diatom, ostracode, and portable X-ray fluorescence spectrometer measurements. Gypsum and carbonate strontium isotope ratio measurements reflect changes in water sources. Three shallow saline lake to desiccation cycles occurred from >45 and >28 cal ka BP. Deflation removed Lake Bonneville sediments between 13 and 8.3 cal ka BP. Gypsum deposition spanned 8.3 to 5.4 cal ka BP, while the oldest halite interval formed from 5.4 to 3.5 cal ka BP during a wetter period. These findings offer valuable insights for sedimentologists, archaeologists, geomorphologists, and land managers.","PeriodicalId":49643,"journal":{"name":"Quaternary Research","volume":"59 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2024-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139753196","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