Pub Date : 2024-11-17DOI: 10.1016/j.quascirev.2024.109044
Ellie Nelson , Zoltán Püspöki , Dustin White , György Pogácsás , Richard William McIntosh , Bálint Szappanos , Lucy Wheeler , Tamás Fancsik , Kirsty Penkman
Long-term terrestrial archives of Quaternary climate change illustrate how global changes affect regional climates, but correlation of terrestrial deposits to global records can be challenging due to a lack of material for radiometric dating. The Pannonian Basin (Hungary) contains large river basins, with near-continuous Quaternary deposits ∼600 m in depth. This study tested the IcPD (intra-crystalline protein degradation) approach to amino acid geochronology using bithyniid snail opercula to date deep-core material in geothermally warm regions. Material from seven fully-cored boreholes was collected from four sub-regions: the Körös and Jászság basins, Makó Trough and Békés Basin. IcPD increased with age until approximately 2.3 million years ago, generally supporting stratigraphic correlations previously made between the boreholes. IcPD was consistent between different boreholes within the same sub-region. However due to the steep geothermal gradient in this region, IcPD was systematically different between sub-regions that had different sedimentation rates. Equivalently aged samples buried more deeply had higher IcPD levels, indicating a greater geothermic effect. This provides an insight into how variations in burial temperature can affect protein decomposition within a deeply-buried (>80 m) fossil over geological time, and demonstrates the importance of understanding the geothermal setting for amino acid geochronology. This study shows the utility of IcPD to correlate terrestrial deep-core sediments over the Pleistocene.
{"title":"A Quaternary aminostratigraphy for the Pannonian Basin: The competing influences of time, burial depth and temperature in deep-core material","authors":"Ellie Nelson , Zoltán Püspöki , Dustin White , György Pogácsás , Richard William McIntosh , Bálint Szappanos , Lucy Wheeler , Tamás Fancsik , Kirsty Penkman","doi":"10.1016/j.quascirev.2024.109044","DOIUrl":"10.1016/j.quascirev.2024.109044","url":null,"abstract":"<div><div>Long-term terrestrial archives of Quaternary climate change illustrate how global changes affect regional climates, but correlation of terrestrial deposits to global records can be challenging due to a lack of material for radiometric dating. The Pannonian Basin (Hungary) contains large river basins, with near-continuous Quaternary deposits ∼600 m in depth. This study tested the IcPD (intra-crystalline protein degradation) approach to amino acid geochronology using bithyniid snail opercula to date deep-core material in geothermally warm regions. Material from seven fully-cored boreholes was collected from four sub-regions: the Körös and Jászság basins, Makó Trough and Békés Basin. IcPD increased with age until approximately 2.3 million years ago, generally supporting stratigraphic correlations previously made between the boreholes. IcPD was consistent between different boreholes within the same sub-region. However due to the steep geothermal gradient in this region, IcPD was systematically different between sub-regions that had different sedimentation rates. Equivalently aged samples buried more deeply had higher IcPD levels, indicating a greater geothermic effect. This provides an insight into how variations in burial temperature can affect protein decomposition within a deeply-buried (>80 m) fossil over geological time, and demonstrates the importance of understanding the geothermal setting for amino acid geochronology. This study shows the utility of IcPD to correlate terrestrial deep-core sediments over the Pleistocene.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"346 ","pages":"Article 109044"},"PeriodicalIF":3.2,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142660709","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-17DOI: 10.1016/j.quascirev.2024.109087
Ruifei Yu , Lidong Zhu , Licheng Guo , Dongpo Mo , Zhongping Zhang , Ji Wang , Shangfa Xiong , Qiaowen Zhang , Fengquan Li , Wei Ye
The loess-like Quaternary Red Clay (QRC) documented the variations in regional and/or global climate during the Late Quaternary. However, the limited well-dated age of the loess-like QRC sections in the subtropical region of East Asia has previously hindered the establishment of a connection between the loess-like QRC records and global climate changes. In this study, we present ten optically stimulated luminescence ages, detrital zircon dating data, and analyses of particle size, K2O/Al2O3 molar ratio, chemical index of alteration values, and δ7Li values from 32 samples acquired from the loess-like QRC sections in the subtropical region of East Asia. The data analysis reveals that the period of vermicularisation stagnation in the region occurred approximately between 0.13 and 0.10 million years ago, and the stable source materials for the loess-like QRC section predominantly originated from the bedrock. Furthermore, the palaeoenvironmental proxies suggest that the stagnation of vermicularisation corresponds to a period characterised by dry and cold conditions with relatively weak silicate weathering and/or pedogenesis. A comprehensive analysis suggests that cooling during the Late Quaternary induced the stagnation of vermicularisation in the subtropical region of East Asia.
{"title":"Cooling induced the stagnation of vermicularisation in the subtropical region of East Asia during the Late Quaternary","authors":"Ruifei Yu , Lidong Zhu , Licheng Guo , Dongpo Mo , Zhongping Zhang , Ji Wang , Shangfa Xiong , Qiaowen Zhang , Fengquan Li , Wei Ye","doi":"10.1016/j.quascirev.2024.109087","DOIUrl":"10.1016/j.quascirev.2024.109087","url":null,"abstract":"<div><div>The loess-like Quaternary Red Clay (QRC) documented the variations in regional and/or global climate during the Late Quaternary. However, the limited well-dated age of the loess-like QRC sections in the subtropical region of East Asia has previously hindered the establishment of a connection between the loess-like QRC records and global climate changes. In this study, we present ten optically stimulated luminescence ages, detrital zircon dating data, and analyses of particle size, K<sub>2</sub>O/Al<sub>2</sub>O<sub>3</sub> molar ratio, chemical index of alteration values, and δ<sup>7</sup>Li values from 32 samples acquired from the loess-like QRC sections in the subtropical region of East Asia. The data analysis reveals that the period of vermicularisation stagnation in the region occurred approximately between 0.13 and 0.10 million years ago, and the stable source materials for the loess-like QRC section predominantly originated from the bedrock. Furthermore, the palaeoenvironmental proxies suggest that the stagnation of vermicularisation corresponds to a period characterised by dry and cold conditions with relatively weak silicate weathering and/or pedogenesis. A comprehensive analysis suggests that cooling during the Late Quaternary induced the stagnation of vermicularisation in the subtropical region of East Asia.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"346 ","pages":"Article 109087"},"PeriodicalIF":3.2,"publicationDate":"2024-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142660610","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}
Pub Date : 2024-11-16DOI: 10.1016/j.quascirev.2024.109067
Angela L. Lamb , Benjamin D. Barst , Clayton D. Elder , Stefan Engels , Chris Francis , Maarten van Hardenbroek , Oliver Heiri , Alex Lombino , Hannah J. Robson , Katey Walter Anthony , Matthew J. Wooller
This review examines recent developments in the application of stable isotope analyses (δ18O, δ13C, δ15N, δD) to lacustrine invertebrate remains. These remains are ubiquitous in lacustrine sediments and thus provide an opportunity to measure changes in stable isotope ratios across a range of timescales and environments and allow interpretive power beyond taxonomic studies. To date they have been relatively understudied in comparison to carbonate fossils and offer both opportunities and challenges and we explore both themes in this review. This review will explore improvements to analytical instrumentation and the opportunities that this presents, it will look at a range of new studies of the modern lacustrine environment and how these studies allow a more nuanced palaeoenvironmental approach. We review recent studies that have used these advancements in understanding to help to reveal new knowledge of past climates, environments and ecology. In addition, we explore new studies that help to elucidate the role of methane-derived carbon to lacustrine food webs and the drivers behind this, including new data to estimate the contribution of methane derived carbon to an arctic lake. We conclude that major progress is currently being made in invertebrate-isotope analyses, and we expect this to continue apace.
{"title":"Stable isotope analyses of lacustrine chitinous invertebrate remains: Analytical advances, challenges and potential","authors":"Angela L. Lamb , Benjamin D. Barst , Clayton D. Elder , Stefan Engels , Chris Francis , Maarten van Hardenbroek , Oliver Heiri , Alex Lombino , Hannah J. Robson , Katey Walter Anthony , Matthew J. Wooller","doi":"10.1016/j.quascirev.2024.109067","DOIUrl":"10.1016/j.quascirev.2024.109067","url":null,"abstract":"<div><div>This review examines recent developments in the application of stable isotope analyses (δ<sup>18</sup>O, δ<sup>13</sup>C, δ<sup>15</sup>N, δD) to lacustrine invertebrate remains. These remains are ubiquitous in lacustrine sediments and thus provide an opportunity to measure changes in stable isotope ratios across a range of timescales and environments and allow interpretive power beyond taxonomic studies. To date they have been relatively understudied in comparison to carbonate fossils and offer both opportunities and challenges and we explore both themes in this review. This review will explore improvements to analytical instrumentation and the opportunities that this presents, it will look at a range of new studies of the modern lacustrine environment and how these studies allow a more nuanced palaeoenvironmental approach. We review recent studies that have used these advancements in understanding to help to reveal new knowledge of past climates, environments and ecology. In addition, we explore new studies that help to elucidate the role of methane-derived carbon to lacustrine food webs and the drivers behind this, including new data to estimate the contribution of methane derived carbon to an arctic lake. We conclude that major progress is currently being made in invertebrate-isotope analyses, and we expect this to continue apace.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"346 ","pages":"Article 109067"},"PeriodicalIF":3.2,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142661001","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-15DOI: 10.1016/j.quascirev.2024.108982
V.C. Hernandez , M.W. Morley , A.-M. Bacon , P. Duringer , K.E. Westaway , R. Joannes-Boyau , J.-L. Ponche , C. Zanolli , P. Sichanthongtip , S. Boualaphane , T. Luangkhoth , J.-J. Hublin , F. Demeter
Fossil evidence for some of the earliest Homo sapiens presence in mainland Southeast Asia have been recovered from Tam Pà Ling (TPL) cave, northeastern Laos. Taphonomic indicators suggest that these human fossils washed into TPL via gradual colluviation at varying times between MIS 5–3, yet no attempt has been made to situate them within the depositional environments of the cave within these periods. This has precluded a deeper appreciation of their presence there and in the surrounding landscape. In this first microstratigraphic study of TPL, we primarily use sediment micromorphology to reconstruct the depositional environments of the cave, relate these environments with the taphonomic history of the human fossils recovered from the upper 4 m of the excavated sequence, and explore how the sediments can better explain the presence of these humans in the area during MIS 3–1 (52–10 ka). Our results demonstrate changes in local ambient conditions from being temperate to arid, with ground conditions often wet during MIS 3 and becoming increasingly seasonal (wet-dry) during MIS 2–1. The changing cave conditions impacted its interior topography and influenced the way sediments (and fossils) were deposited. Preserved combustion biproducts identified in the sediments suggest two possible scenarios, one where small forest fires may have occurred during periods of regional aridity and/or another where humans visited the cave.
老挝东北部的 Tam Pà Ling（TPL）洞穴发现了东南亚大陆最早的智人化石证据。岩石学指标表明，这些人类化石是在 MIS 5-3 之间的不同时期通过逐渐的冲积作用被冲入 TPL 的，但没有人试图将它们置于这些时期洞穴的沉积环境中。这使得人们无法更深入地了解它们在洞穴和周围景观中的存在。在这项首次对 TPL 进行的微地层学研究中，我们主要利用沉积物微形态学来重建洞穴的沉积环境，将这些环境与从发掘序列上部 4 米处采集的人类化石的岩石学历史联系起来，并探讨沉积物如何更好地解释 MIS 3-1 （52-10 ka）期间这些人类在该地区的存在。我们的研究结果表明，当地的环境条件发生了变化，从温带气候变为干旱气候，在 MIS 3 期间地面条件经常潮湿，而在 MIS 2-1 期间则变得越来越季节性（干湿交替）。洞穴条件的变化影响了洞穴内部的地形，也影响了沉积物（和化石）的沉积方式。在沉积物中发现的保留下来的燃烧副产品表明了两种可能的情况，一种是在区域干旱时期可能发生过小型森林火灾，另一种是人类曾经造访过该洞穴。
{"title":"Late Pleistocene–Holocene (52–10 ka) microstratigraphy, fossil taphonomy and depositional environments from Tam Pà Ling cave (northeastern Laos)","authors":"V.C. Hernandez , M.W. Morley , A.-M. Bacon , P. Duringer , K.E. Westaway , R. Joannes-Boyau , J.-L. Ponche , C. Zanolli , P. Sichanthongtip , S. Boualaphane , T. Luangkhoth , J.-J. Hublin , F. Demeter","doi":"10.1016/j.quascirev.2024.108982","DOIUrl":"10.1016/j.quascirev.2024.108982","url":null,"abstract":"<div><div>Fossil evidence for some of the earliest <em>Homo sapiens</em> presence in mainland Southeast Asia have been recovered from Tam Pà Ling (TPL) cave, northeastern Laos. Taphonomic indicators suggest that these human fossils washed into TPL via gradual colluviation at varying times between MIS 5–3, yet no attempt has been made to situate them within the depositional environments of the cave within these periods. This has precluded a deeper appreciation of their presence there and in the surrounding landscape. In this first microstratigraphic study of TPL, we primarily use sediment micromorphology to reconstruct the depositional environments of the cave, relate these environments with the taphonomic history of the human fossils recovered from the upper 4 m of the excavated sequence, and explore how the sediments can better explain the presence of these humans in the area during MIS 3–1 (52–10 ka). Our results demonstrate changes in local ambient conditions from being temperate to arid, with ground conditions often wet during MIS 3 and becoming increasingly seasonal (wet-dry) during MIS 2–1. The changing cave conditions impacted its interior topography and influenced the way sediments (and fossils) were deposited. Preserved combustion biproducts identified in the sediments suggest two possible scenarios, one where small forest fires may have occurred during periods of regional aridity and/or another where humans visited the cave.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"344 ","pages":"Article 108982"},"PeriodicalIF":3.2,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142652665","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-15DOI: 10.1016/j.quascirev.2024.108866
Robert D. McCulloch , Michael J. Bentley , Derek Fabel , Hans Fernández-Navarro , Juan-Luis García , Andrew S. Hein , Carla Huynh , Stewart S.R. Jamieson , María-Paz Lira , Christopher Lüthgens , Grace A. Nield , Manuel San Román , Eileen W. Tisdall
Raised shorelines and associated lacustrine sediments in the central Estrecho de Magallanes (Strait of Magellan) have been interpreted as products of cordilleran glaciers impounding a large proglacial lake and preventing drainage to the South Pacific and Southern Ocean during the Late glacial between c. 15.0 and 12.0 cal ka BP. However, a growing body of glacial geological evidence points towards an earlier retreat of the Magellan cordilleran ice dome, insufficient to dam lakes at that time. We critically re-evaluate the extant evidence for the c. 15.0–12.0 cal ka BP lake, here named ‘Lago Kawésqar’, and provide further sedimentological and chronological evidence for its existence. We also provide new cosmogenic surface nuclide dating of erratic and bedrock samples collected from extensive field campaigns that confirm the rapid and widespread retreat of the Magellan ice fields to the inner fjords of the Fuegian archipelago by c. 16.0 ka. To resolve the apparent paradox between these two lines of evidence we propose that glacial isostatic adjustment led to a topographic barrier to lake drainage rather than an ice dam. We use Glacial Isostatic Adjustment modelling to demonstrate that rapid isostatic recovery following the early deglaciation after c. 17.0 cal ka BP likely led to elevation of the present shallow south-western coastal margin of the Fuegian archipelago. Final drainage of Lago Kawésqar was probably caused by neotectonic subsidence of the same margin along the boundary of the South American – Scotia tectonic plates at c. 12.0 cal ka BP.
麦哲伦海峡（Estrecho de Magallanes）中部隆起的海岸线和相关的湖泊沉积物被解释为是在大约公元前 15.0 卡至 12.0 卡之间的晚冰期，心形冰川阻塞了一个大型冰期湖泊并阻止向南太平洋和南大洋排水的产物。然而，越来越多的冰川地质证据表明，麦哲伦冰盖的退缩时间更早，不足以在当时阻塞湖泊。我们对约公元前 15.0-12.0 卡卡湖（此处命名为 "Lago Kawésqar"）的现存证据进行了严格的重新评估，并为其存在提供了进一步的沉积学和年代学证据。我们还提供了新的宇宙源表面核素测年方法，这些测年方法是在广泛的野外考察活动中采集的岩屑和基岩样本，证实了麦哲伦冰原在约 16.0 ka 年前向富给加群岛的内峡湾快速而广泛地后退。为了解决这两个证据之间的明显矛盾，我们提出冰川等静力调整导致了湖泊排水的地形障碍，而不是冰坝。我们利用冰川等静力调整模型来证明，大约公元前 17.0 千卡之后的早期冰川脱落之后的快速等静力恢复很可能导致了现在的富给加群岛西南浅海岸边缘的抬升。卡瓦斯卡尔湖（Lago Kawésqar）的最终排水很可能是由于大约公元前 12.0 卡卡年南美-斯科舍板块边界沿线同一边缘的新构造下沉造成的。
{"title":"Resolving the paradox of conflicting glacial chronologies: Reconstructing the pattern of deglaciation of the Magellan cordilleran ice dome (53–54°S) during the last glacial – interglacial transition","authors":"Robert D. McCulloch , Michael J. Bentley , Derek Fabel , Hans Fernández-Navarro , Juan-Luis García , Andrew S. Hein , Carla Huynh , Stewart S.R. Jamieson , María-Paz Lira , Christopher Lüthgens , Grace A. Nield , Manuel San Román , Eileen W. Tisdall","doi":"10.1016/j.quascirev.2024.108866","DOIUrl":"10.1016/j.quascirev.2024.108866","url":null,"abstract":"<div><div>Raised shorelines and associated lacustrine sediments in the central Estrecho de Magallanes (Strait of Magellan) have been interpreted as products of cordilleran glaciers impounding a large proglacial lake and preventing drainage to the South Pacific and Southern Ocean during the Late glacial between c. 15.0 and 12.0 cal ka BP. However, a growing body of glacial geological evidence points towards an earlier retreat of the Magellan cordilleran ice dome, insufficient to dam lakes at that time. We critically re-evaluate the extant evidence for the c. 15.0–12.0 cal ka BP lake, here named ‘Lago Kawésqar’, and provide further sedimentological and chronological evidence for its existence. We also provide new cosmogenic surface nuclide dating of erratic and bedrock samples collected from extensive field campaigns that confirm the rapid and widespread retreat of the Magellan ice fields to the inner fjords of the Fuegian archipelago by c. 16.0 ka. To resolve the apparent paradox between these two lines of evidence we propose that glacial isostatic adjustment led to a topographic barrier to lake drainage rather than an ice dam. We use Glacial Isostatic Adjustment modelling to demonstrate that rapid isostatic recovery following the early deglaciation after c. 17.0 cal ka BP likely led to elevation of the present shallow south-western coastal margin of the Fuegian archipelago. Final drainage of Lago Kawésqar was probably caused by neotectonic subsidence of the same margin along the boundary of the South American – Scotia tectonic plates at c. 12.0 cal ka BP.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"344 ","pages":"Article 108866"},"PeriodicalIF":3.2,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142652667","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}
Pub Date : 2024-11-15DOI: 10.1016/j.quascirev.2024.109028
Andrew C. Smith, Jack H. Lacey
Human impact on the climate and environment are one of our greatest challenges. Increasing atmospheric greenhouse gas concentrations, rising temperatures and distinct alterations in the global water cycle are problems which impact all environments and human populations. Consequences of anthropogenic activity can be, however, expressed at the regional and local scales, such as the effects of water pollution, reduction in soil quality, and the loss of biodiversity related to resource use and land management strategies in a specific area. Here, we consider how stable isotopes can be used to trace the influence of human impact, drawing from terrestrial records. We review the utility of stable isotopes in palaeoenvironmental archives, and show how these can help to identify the timing and magnitude of past change related to anthropogenic pressures on the environment. We also review how isotopes can be applied to modern monitoring of the environment, to identify changing sources of pollution and the processing of key pollutants once they enter the environment. In combination, isotope data from palaeoenvironmental archives and detailed modern monitoring enable the development of a more holistic temporal understanding of regional-local environmental change and to identify its driving mechanisms. These data are able to provide a key basis for initiating an evidence-based approach toward mitigation and environmental remediation.
{"title":"Tracing anthropogenic climate and environmental change using stable isotopes","authors":"Andrew C. Smith, Jack H. Lacey","doi":"10.1016/j.quascirev.2024.109028","DOIUrl":"10.1016/j.quascirev.2024.109028","url":null,"abstract":"<div><div>Human impact on the climate and environment are one of our greatest challenges. Increasing atmospheric greenhouse gas concentrations, rising temperatures and distinct alterations in the global water cycle are problems which impact all environments and human populations. Consequences of anthropogenic activity can be, however, expressed at the regional and local scales, such as the effects of water pollution, reduction in soil quality, and the loss of biodiversity related to resource use and land management strategies in a specific area. Here, we consider how stable isotopes can be used to trace the influence of human impact, drawing from terrestrial records. We review the utility of stable isotopes in palaeoenvironmental archives, and show how these can help to identify the timing and magnitude of past change related to anthropogenic pressures on the environment. We also review how isotopes can be applied to modern monitoring of the environment, to identify changing sources of pollution and the processing of key pollutants once they enter the environment. In combination, isotope data from palaeoenvironmental archives and detailed modern monitoring enable the development of a more holistic temporal understanding of regional-local environmental change and to identify its driving mechanisms. These data are able to provide a key basis for initiating an evidence-based approach toward mitigation and environmental remediation.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"346 ","pages":"Article 109028"},"PeriodicalIF":3.2,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142660704","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-15DOI: 10.1016/j.quascirev.2024.109021
Sophie O. Vineberg , Paul G. Albert , Danielle McLean , Takehiko Suzuki , Richard A. Staff , Keitaro Yamada , Ikuko Kitaba , Junko Kitagawa , Christina J. Manning , Hannah M. Buckland , Gwydion Jones , Fumikatsu Nishizawa , SG14 Project Members , Takeshi Nakagawa , Victoria C. Smith
We present the findings of a detailed non-visible (cryptotephra) tephra investigation of the Lake Suigetsu (Japan) sedimentary sequence spanning ∼120 to 50 ka. Thirty-nine new cryptotephra and two visible tephra horizons are identified during this interval interspersed between visible tephra layers associated with large-magnitude eruptions and regional event markers (e.g., Aso-4, K-Tz, Ata). The newly identified volcanic deposits are geochemically analysed using major (EMP) and trace (LA-ICP-MS) element glass analyses, and the chemical fingerprints are used to trace these deposits to subduction related volcanoes located along the three main Japanese islands (Kyushu, Honshu and Hokkaido), as well as nearby intraplate volcanoes. Our findings provide geochemical, chronological and ash-fall constraints on the activity at multiple volcanic centres; in particular, the Kirishima volcanic complex in the southern volcanic region of Kyushu. Furthermore, the Lake Suigetsu cryptotephra record reveals distal ash-fall from two notable large magnitude (≥M6.0) eruptions, the Plinian Sambe Kisuki (SK) eruption and the caldera-forming Toya eruption, both of which are important widespread tephrostratigraphic markers suitable for linking regional terrestrial and marine sequences. Using the Lake Suigetsu age-depth model, they are dated to 100.4 ± 3.1 ka (±1σ) and 108.1 ± 3.9 ka (±1σ), respectively. Finally, our investigation reveals numerous eruption deposits which have not yet been identified in near-vent sequences, indicating eruption under-recording. This research re-affirms Lake Suigetsu as the single most comprehensive ash-fall record of East Asian explosive volcanism over the past 150 kyr, and contributes significantly to our understanding of the timing and ash dispersals of pre-historic eruptions.
{"title":"A detailed record of large explosive eruptions from Japan between ∼120 and 50 ka preserved at Lake Suigetsu","authors":"Sophie O. Vineberg , Paul G. Albert , Danielle McLean , Takehiko Suzuki , Richard A. Staff , Keitaro Yamada , Ikuko Kitaba , Junko Kitagawa , Christina J. Manning , Hannah M. Buckland , Gwydion Jones , Fumikatsu Nishizawa , SG14 Project Members , Takeshi Nakagawa , Victoria C. Smith","doi":"10.1016/j.quascirev.2024.109021","DOIUrl":"10.1016/j.quascirev.2024.109021","url":null,"abstract":"<div><div>We present the findings of a detailed non-visible (cryptotephra) tephra investigation of the Lake Suigetsu (Japan) sedimentary sequence spanning ∼120 to 50 ka. Thirty-nine new cryptotephra and two visible tephra horizons are identified during this interval interspersed between visible tephra layers associated with large-magnitude eruptions and regional event markers (e.g., Aso-4, K-Tz, Ata). The newly identified volcanic deposits are geochemically analysed using major (EMP) and trace (LA-ICP-MS) element glass analyses, and the chemical fingerprints are used to trace these deposits to subduction related volcanoes located along the three main Japanese islands (Kyushu, Honshu and Hokkaido), as well as nearby intraplate volcanoes. Our findings provide geochemical, chronological and ash-fall constraints on the activity at multiple volcanic centres; in particular, the Kirishima volcanic complex in the southern volcanic region of Kyushu. Furthermore, the Lake Suigetsu cryptotephra record reveals distal ash-fall from two notable large magnitude (≥M6.0) eruptions, the Plinian Sambe Kisuki (SK) eruption and the caldera-forming Toya eruption, both of which are important widespread tephrostratigraphic markers suitable for linking regional terrestrial and marine sequences. Using the Lake Suigetsu age-depth model, they are dated to 100.4 ± 3.1 ka (±1σ) and 108.1 ± 3.9 ka (±1σ), respectively. Finally, our investigation reveals numerous eruption deposits which have not yet been identified in near-vent sequences, indicating eruption under-recording. This research re-affirms Lake Suigetsu as the single most comprehensive ash-fall record of East Asian explosive volcanism over the past 150 kyr, and contributes significantly to our understanding of the timing and ash dispersals of pre-historic eruptions.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"346 ","pages":"Article 109021"},"PeriodicalIF":3.2,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142660711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-15DOI: 10.1016/j.quascirev.2024.108900
Ari Matmon , Michael Chazan
{"title":"Reply to comment on “The Kalahari sediments and hominins in southern Africa” (Matmon et al., Quat. Sci. Rev. 334, 108716, 2024)","authors":"Ari Matmon , Michael Chazan","doi":"10.1016/j.quascirev.2024.108900","DOIUrl":"10.1016/j.quascirev.2024.108900","url":null,"abstract":"","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"344 ","pages":"Article 108900"},"PeriodicalIF":3.2,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142652668","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}
Pub Date : 2024-11-15DOI: 10.1016/j.quascirev.2024.109082
Yijing Zhang , Yaobin Fan , Yanyan Yao , Chun Tian , Hua Liang , Jinyan Li , Wei Liao , Christopher J. Bae , Wei Wang
The Stegodon-Ailuropoda Faunal Complex is representative of Quaternary faunas across southern China. However, it is becoming increasingly clear that a great deal of variation is present within the faunal complex. Here we report a new late Quaternary faunal assemblage from Upper Pubu Cave, Bubing Basin, Guangxi, southern China. Upper Pubu is a good example of the variation in the Stegodon-Ailuropoda Faunal Complex, particularly when situated in the broader Bubing Basin Quaternary faunal sequence. Upper Pubu was excavated two times resulting in the discovery of 2396 mammalian fossils, consisting mostly of isolated teeth from medium- to large-sized animals. Twenty four mammalian taxa were identified, representative of the Stegodon-Ailuropoda Faunal Complex, including Ailuropoda, Stegodon, Pongo, Rhinoceros, Tapirus, and Elephas. Upper Pubu is dated to 210–100 ka by Uranium-series, electron spin resonance (ESR) and optically stimulated luminescence (OSL) methods. The Upper Pubu fossils largely date to Marine Isotope Stage (“MIS”) 6. Given the severity of the climate during MIS 6, the reduction in both the number and proportion of primates and carnivores in Upper Pubu may be the result of environmental deterioration and a decrease in forested areas towards the end of the Middle Pleistocene (“Chibanian”). It is reasonable to speculate that a predominantly forested and mosaic-like habitat was present during the end of the Middle Pleistocene in southern China – a good example of environmental change during the Quaternary in the region.
{"title":"Variation in the Quaternary Stegodon-Ailuropoda Faunal Complex in Southern China: Upper Pubu Cave (Bubing Basin, Guangxi)","authors":"Yijing Zhang , Yaobin Fan , Yanyan Yao , Chun Tian , Hua Liang , Jinyan Li , Wei Liao , Christopher J. Bae , Wei Wang","doi":"10.1016/j.quascirev.2024.109082","DOIUrl":"10.1016/j.quascirev.2024.109082","url":null,"abstract":"<div><div>The <em>Stegodon-Ailuropoda</em> Faunal Complex is representative of Quaternary faunas across southern China. However, it is becoming increasingly clear that a great deal of variation is present within the faunal complex. Here we report a new late Quaternary faunal assemblage from Upper Pubu Cave, Bubing Basin, Guangxi, southern China. Upper Pubu is a good example of the variation in the <em>Stegodon-Ailuropoda</em> Faunal Complex, particularly when situated in the broader Bubing Basin Quaternary faunal sequence. Upper Pubu was excavated two times resulting in the discovery of 2396 mammalian fossils, consisting mostly of isolated teeth from medium- to large-sized animals. Twenty four mammalian taxa were identified, representative of the <em>Stegodon-Ailuropoda</em> Faunal Complex, including <em>Ailuropoda</em>, <em>Stegodon</em>, <em>Pongo</em>, <em>Rhinoceros</em>, <em>Tapirus</em>, and <em>Elephas</em>. Upper Pubu is dated to 210–100 ka by Uranium-series, electron spin resonance (ESR) and optically stimulated luminescence (OSL) methods. The Upper Pubu fossils largely date to Marine Isotope Stage (“MIS”) 6. Given the severity of the climate during MIS 6, the reduction in both the number and proportion of primates and carnivores in Upper Pubu may be the result of environmental deterioration and a decrease in forested areas towards the end of the Middle Pleistocene (“Chibanian”). It is reasonable to speculate that a predominantly forested and mosaic-like habitat was present during the end of the Middle Pleistocene in southern China – a good example of environmental change during the Quaternary in the region.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"346 ","pages":"Article 109082"},"PeriodicalIF":3.2,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142660609","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}
Pub Date : 2024-11-13DOI: 10.1016/j.quascirev.2024.109054
V. Lowe , G. Cortese , M. Civel-Mazens , H. Bostock
Ocean circulation and the formation and upwelling of water masses in the Southern Ocean play a critical role in the exchange of heat and carbon with the atmosphere over glacial-interglacial cycles, but the history of the subsurface water masses is poorly understood. Radiolarians inhabit the water column from the surface to the bottom of the ocean, and their distribution is known to be associated with water masses. We use radiolarian abundance census data from the SO-RAD core top dataset to explore the relationship between radiolarian distribution and surface and subsurface water mass structure of the Southwest Pacific Sector of the Southern Ocean. The species distribution was first explored using non-Metric Multidimensional Scaling. Then Multivariate Regression Tree (MRT) analysis was used to understand the relationship between radiolarian distributions and parameters of water mass boundaries (using isopycnal depths) and upwelling (using nutrient data). We identified a series of indicator species associated with oceanographic zones which were used to develop the Southern Ocean Water Mass Index. The contribution of the Index Species Groups provided further information on water column structure and the relative influence of the various water masses. The index was then applied to the radiolarian assemblage data from 2 previously published cores, Y8 and Y9, from the Subantarctic Zone east of New Zealand. The results of the Southern Ocean Water Mass Method showed changes in water mass structure through the last glacial-interglacial cycle at both core sites. The results agree with other proxy data from the region. The SOWM Method provides a new tool for understanding the history of changes in the water mass structure and circulation in the Southern Ocean.
{"title":"Southern Ocean Water Mass method: A new statistical approach using microfossil radiolaria for paleoceanographic insights for the Southwest Pacific sector of the Southern Ocean","authors":"V. Lowe , G. Cortese , M. Civel-Mazens , H. Bostock","doi":"10.1016/j.quascirev.2024.109054","DOIUrl":"10.1016/j.quascirev.2024.109054","url":null,"abstract":"<div><div>Ocean circulation and the formation and upwelling of water masses in the Southern Ocean play a critical role in the exchange of heat and carbon with the atmosphere over glacial-interglacial cycles, but the history of the subsurface water masses is poorly understood. Radiolarians inhabit the water column from the surface to the bottom of the ocean, and their distribution is known to be associated with water masses. We use radiolarian abundance census data from the SO-RAD core top dataset to explore the relationship between radiolarian distribution and surface and subsurface water mass structure of the Southwest Pacific Sector of the Southern Ocean. The species distribution was first explored using non-Metric Multidimensional Scaling. Then Multivariate Regression Tree (MRT) analysis was used to understand the relationship between radiolarian distributions and parameters of water mass boundaries (using isopycnal depths) and upwelling (using nutrient data). We identified a series of indicator species associated with oceanographic zones which were used to develop the Southern Ocean Water Mass Index. The contribution of the Index Species Groups provided further information on water column structure and the relative influence of the various water masses. The index was then applied to the radiolarian assemblage data from 2 previously published cores, Y8 and Y9, from the Subantarctic Zone east of New Zealand. The results of the Southern Ocean Water Mass Method showed changes in water mass structure through the last glacial-interglacial cycle at both core sites. The results agree with other proxy data from the region. The SOWM Method provides a new tool for understanding the history of changes in the water mass structure and circulation in the Southern Ocean.</div></div>","PeriodicalId":20926,"journal":{"name":"Quaternary Science Reviews","volume":"346 ","pages":"Article 109054"},"PeriodicalIF":3.2,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142660612","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
扫码关注我们
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号