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Medium and large-sized Glires (Rodents and Lagomorphs) from the early Pleistocene Cooper's D locality in the Cradle of Humankind, Gauteng, South Africa
IF 1.9 3区 地球科学
Quaternary International Pub Date : 2025-01-01 DOI: 10.1016/j.quaint.2024.11.008
Pierre Linchamps , Raphaël Hanon , Emmanuelle Stoetzel , Brigette Cohen , Christine Steininger
{"title":"Medium and large-sized Glires (Rodents and Lagomorphs) from the early Pleistocene Cooper's D locality in the Cradle of Humankind, Gauteng, South Africa","authors":"Pierre Linchamps ,&nbsp;Raphaël Hanon ,&nbsp;Emmanuelle Stoetzel ,&nbsp;Brigette Cohen ,&nbsp;Christine Steininger","doi":"10.1016/j.quaint.2024.11.008","DOIUrl":"10.1016/j.quaint.2024.11.008","url":null,"abstract":"<div><div>Remains of mesomammals, i.e. intermediate-sized mammals, are ubiquitous in southern African fossil sites. Even though they do not constitute a taxonomically cohesive group, medium-sized mammals share common ecological traits and are subject to similar taphonomic processes, making them essential for understanding past ecosystems. This study focuses on craniodental remains of medium- and large-sized rodents and lagomorphs from the Early Pleistocene hominin-bearing site of Cooper's Cave in the Cradle of Humankind. The Cooper's D deposit, dated to approximately &lt;1.4 Ma, has provided a wealth of faunal material, including many mesomammal remains. This contribution presents an updated taxonomic analysis of fossil material, including morphological descriptions with new diagnostic criteria, ecological information about the different taxa, and preliminary taphonomic observations. Notably, this assemblage documents the oldest known occurrence of the genus <em>Geosciurus</em> in South Africa, pushing its attested presence back by over one million years.</div></div>","PeriodicalId":49644,"journal":{"name":"Quaternary International","volume":"715 ","pages":"Article 109590"},"PeriodicalIF":1.9,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143179338","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
El Niño-Southern Oscillation signals imprinted in stalagmite δ18O from 2005 to 2017 2005 - 2017年石笋δ18O的El Niño-Southern振荡信号
IF 1.9 3区 地球科学
Quaternary International Pub Date : 2024-12-03 DOI: 10.1016/j.quaint.2024.109631
Jianshun Chen , Yijia Liang , Kan Zhao , Yongjin Wang , Zhenqiu Zhang , Fucai Duan , Jingwei Zhang , Qingfeng Shao , Junji Zhu , Shaohua Yang , Lian Tang , Yuqing Wang , Hai Cheng
{"title":"El Niño-Southern Oscillation signals imprinted in stalagmite δ18O from 2005 to 2017","authors":"Jianshun Chen ,&nbsp;Yijia Liang ,&nbsp;Kan Zhao ,&nbsp;Yongjin Wang ,&nbsp;Zhenqiu Zhang ,&nbsp;Fucai Duan ,&nbsp;Jingwei Zhang ,&nbsp;Qingfeng Shao ,&nbsp;Junji Zhu ,&nbsp;Shaohua Yang ,&nbsp;Lian Tang ,&nbsp;Yuqing Wang ,&nbsp;Hai Cheng","doi":"10.1016/j.quaint.2024.109631","DOIUrl":"10.1016/j.quaint.2024.109631","url":null,"abstract":"<div><div>El Niño-Southern Oscillation (ENSO) is essential to the annual rainfall in the Pacific Rim, causing frequent floods and droughts in these regions. However, its relationship with precipitation in southeastern China on the interannual timescale remains uncertain. Here we reconstruct an ultra-high-resolution hydroclimate record from 2005AD to 2017AD using 301 sets of δ<sup>18</sup>O data, U/Th dates, and annual-layer counting on a stalagmite MG2 from Meiguang Cave, Jiangxi Province, southeastern China. We find that both calcite and precipitation δ<sup>18</sup>O records have negative correlations with local rainfall amount, with heavier rainfall correlating with negative excursions of δ<sup>18</sup>O, supporting the rainfall amount effects on calcite and precipitation δ<sup>18</sup>O signals on the seasonal timescale. On the interannual timescale, La Niña (El Niño) years are followed by positive (negative) rainfall years and decreased (increased) MG2 δ<sup>18</sup>O values, and all records have ∼3-year cyclicity. The antiphased correlation of medium coefficiency of the Southern Oscillation Index (SOI) with both precipitation δ<sup>18</sup>O and MG2 δ<sup>18</sup>O records implies that ENSO could modulate the calcite δ<sup>18</sup>O signals in the monsoonal region of China through circulation effects. Therefore, we suggest that changes in cave δ<sup>18</sup>O values in China can be controlled by both rainfall amount and circulation effects related with the ENSO activities, which provides a good reference for the paleoclimate studies on short timescales.</div></div>","PeriodicalId":49644,"journal":{"name":"Quaternary International","volume":"715 ","pages":"Article 109631"},"PeriodicalIF":1.9,"publicationDate":"2024-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142759778","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
Iceberg-rafted debris events from the glacial Kamchatka in the southwestern Okhotsk Sea over the past 110 kyrs 在过去的110年里,来自鄂霍次克海西南部堪察加冰川的漂流碎片事件
IF 1.9 3区 地球科学
Quaternary International Pub Date : 2024-12-02 DOI: 10.1016/j.quaint.2024.109595
Kunshan Wang , Xuefa Shi , Dirk Nürnberg , Zhengquan Yao , Jianjun Zou , Anqi Wang , Xuejiao Jiang
{"title":"Iceberg-rafted debris events from the glacial Kamchatka in the southwestern Okhotsk Sea over the past 110 kyrs","authors":"Kunshan Wang ,&nbsp;Xuefa Shi ,&nbsp;Dirk Nürnberg ,&nbsp;Zhengquan Yao ,&nbsp;Jianjun Zou ,&nbsp;Anqi Wang ,&nbsp;Xuejiao Jiang","doi":"10.1016/j.quaint.2024.109595","DOIUrl":"10.1016/j.quaint.2024.109595","url":null,"abstract":"<div><div>High-resolution analyses of ice-rafted debris (IRD) and its light and heavy minerals in a sediment core sample from the SW Okhotsk Sea reveal the varying sources of terrigenous material and iceberg discharge events from the Kamchatka Peninsula into the SW Okhotsk Sea since the last interglacial period (Marine Isotope Stage (MIS) 5). Our results suggest the dominance of seasonal and mobile sea ice since 110 ka BP, with occasional perennial sea ice in the SW Okhotsk Sea, which is the most important agent for the basin-wide dispersal of land-sourced terrigenous material. Between 33 ka BP and 14 ka BP (MIS 2), prevalent sea ice formed on the northern shelves. Since 14 ka BP, instead, the IRD originated mainly from the Sakhalin Gulf, with a substantial increase in near-source material input. Thirteen events of IRD<sub>Kamchatka</sub> were identified between 87 and 27 ka BP (mainly in MIS 4–3), with debris definitely originating from the Kamchatka Peninsula. Among these events, the four most prominent types of iceberg/ice sheet rafting occurred at ∼63 ka, ∼53 ka, ∼40 ka, and ∼33 ka BP. Simultaneously, they are consistent with the IRD<sub>iceberg</sub> events that occurred in the core of western Kamchatka and are also close to the age of H6, H5, H4 and H3 in the Heinrich Events. The initial source areas and transportation pathways of these iceberg armadas varied considerably over time. During ∼87–53 ka BP, icebergs originated from the western Kamchatka Peninsula and migrated southward. During ∼53–27 ka BP, IRD<sub>Kamchatka</sub> inputs likely originated from the eastern Kamchatka Peninsula. This suggests that during MIS 4/3, the mountain glaciers of the Kamchatka Peninsula experienced a reduction in scale and retreated from the western to the eastern part of the peninsula. The event at 27 ka BP marks the last major IRD<sub>Kamchatka</sub> contribution to the Okhotsk Sea from the Kamchatka Peninsula. Since 14 ka BP, the input of IRD<sub>Kamchatka</sub> into the SW Okhotsk Sea has become very weak.</div></div>","PeriodicalId":49644,"journal":{"name":"Quaternary International","volume":"715 ","pages":"Article 109595"},"PeriodicalIF":1.9,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142759777","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
Subsidence and recent landscape evolution at Volturno Coastal Plain (Italy)
IF 1.9 3区 地球科学
Quaternary International Pub Date : 2024-12-01 DOI: 10.1016/j.quaint.2024.11.002
Ines Alberico, Fabio Matano
{"title":"Subsidence and recent landscape evolution at Volturno Coastal Plain (Italy)","authors":"Ines Alberico,&nbsp;Fabio Matano","doi":"10.1016/j.quaint.2024.11.002","DOIUrl":"10.1016/j.quaint.2024.11.002","url":null,"abstract":"<div><div>Alluvial plains along the coasts of the Mediterranean Sea are susceptible to subsidence due to natural sediment compaction, tectonic forces, urban growth and over-exploitation of groundwater resources. Subsidence process may largely affect coastal landscapes, especially in areas with compressible deposits in the subsoil. In this article, the historical changes of landscape (from 1600 to present) and the vertical ground movement (in the last 30 years) of Volturno Coastal Plain (VCP) were analyzed to shed light on the possible relations between the location of subsiding lands and the landscape changes in the last centuries mainly due to land reclamation works. To this aim, historical maps, satellite images, and radar interferometric vertical ground deformation datasets were acquired and integrated in a geographic information system. The historical cartography allowed to ouline the landscape changes of coastal plain features that took place mainly in the marshy and swampy areas and in the dune system before and after the reclamation works. Ground deformation trends have been assessed between 1992 and 2021 based on processing several radar satellite data with Synthetic Aperture Radar Differential Interferometry (DInSAR) techniques. Vector and grid analysis tools have been used to draw features of past landscapes, to continuously represent the vertical movement of soil and to compare the available data. Before the mid-1950s, anthropogenic activity was limited and not associated with active subsidence processes in the marshes and lacustrine areas. However, in recent decades, satellite radar interferometric data show that high subsidence areas in the middle and lower sectors of Volturno Coastal Plain (VCP) are locally enhanced by anthropogenic activity. It is noteworthy that the subsidence of VCP today is related to the cumulative effects of several processes that have developed at different temporal and spatial scales.</div></div>","PeriodicalId":49644,"journal":{"name":"Quaternary International","volume":"712 ","pages":"Article 109584"},"PeriodicalIF":1.9,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143148427","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Publisher's Note - Introducing Article Numbering to Quaternary International
IF 1.9 3区 地球科学
Quaternary International Pub Date : 2024-12-01 DOI: 10.1016/j.quaint.2024.109591
{"title":"Publisher's Note - Introducing Article Numbering to Quaternary International","authors":"","doi":"10.1016/j.quaint.2024.109591","DOIUrl":"10.1016/j.quaint.2024.109591","url":null,"abstract":"","PeriodicalId":49644,"journal":{"name":"Quaternary International","volume":"712 ","pages":"Article 109591"},"PeriodicalIF":1.9,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143149008","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 technique mapping submerged beachrocks using low-altitude UAV photogrammetry, the Altınova region, northern coast of the Sea of Marmara (NW Türkiye)
IF 1.9 3区 地球科学
Quaternary International Pub Date : 2024-12-01 DOI: 10.1016/j.quaint.2024.10.011
Mustafa Geyik , Ufuk Tarı , Orkan Özcan , Gürsel Sunal , Cenk Yaltırak
{"title":"A new technique mapping submerged beachrocks using low-altitude UAV photogrammetry, the Altınova region, northern coast of the Sea of Marmara (NW Türkiye)","authors":"Mustafa Geyik ,&nbsp;Ufuk Tarı ,&nbsp;Orkan Özcan ,&nbsp;Gürsel Sunal ,&nbsp;Cenk Yaltırak","doi":"10.1016/j.quaint.2024.10.011","DOIUrl":"10.1016/j.quaint.2024.10.011","url":null,"abstract":"<div><div>High-resolution aerial imagery captured from low altitudes enables the detailed reconstruction of the geomorphological features of submerged beachrocks and the quantification of their topographic complexity. These coastal deposits serve as vital indicators for estimating past sea-level positions and deformation, contributing to our understanding of climate and tectonic processes across various temporal and spatial scales. This study focuses on submerged beachrocks identified in the nearshore coastal area of Tekirdağ city (Altınova), and the existing knowledge regarding such geological formations is limited.</div><div>Situated in the tectonically active western Marmara region, the coastal zone of The Tekirdağ-Altınova is influenced by the North Anatolian Fault Zone (NAFZ), which has significantly shaped the coastline over time. Utilizing unmanned aerial vehicle (UAV) data, we successfully isolated submerged beachrocks from other coastal deposits, identifying them at depths of 2 m below current sea level and extending approximately 5 km along the coast. This identification was facilitated by integrating high-resolution aerial imagery with morphological analysis techniques, specifically employing structure-from-motion photogrammetry to generate a dense point cloud for bathymetric mapping.</div><div>The utilization of cost-effective UAV imagery facilitated the efficient monitoring of beachrocks. Geographic information systems (GIS) and the TerraceM application were employed to analyze the high-resolution bathymetry data (with a 5 cm resolution), enabling the precise estimation of shoreline angles and associated errors. These shoreline angles, which correspond to the past sea levels high stand, were mapped using swath profiles oriented perpendicular to the isobaths. Our findings reveal that the majority of submerged beachrocks exhibit shoreline angles between ∼ −0.7 m and −1.1 m. This study presents innovative methodologies for mapping the height and spatial distribution of beachrocks, as well as for reliably estimating reliable uplift rates in the nearshore area of Tekirdağ-Altınova.</div></div>","PeriodicalId":49644,"journal":{"name":"Quaternary International","volume":"712 ","pages":"Article 109579"},"PeriodicalIF":1.9,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143148440","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
Machine learning-based identification of geomorphological units in Quintero Bay (32°S) and its implications for the search for early drowned archaeological sites on the western coast of South America
IF 1.9 3区 地球科学
Quaternary International Pub Date : 2024-12-01 DOI: 10.1016/j.quaint.2024.11.003
Valentina Flores-Aqueveque , Hugo Neira-Santander , Cristina Ortega , César Méndez , Isabel Cartajena , Renato Simonetti , Diego Carabias
{"title":"Machine learning-based identification of geomorphological units in Quintero Bay (32°S) and its implications for the search for early drowned archaeological sites on the western coast of South America","authors":"Valentina Flores-Aqueveque ,&nbsp;Hugo Neira-Santander ,&nbsp;Cristina Ortega ,&nbsp;César Méndez ,&nbsp;Isabel Cartajena ,&nbsp;Renato Simonetti ,&nbsp;Diego Carabias","doi":"10.1016/j.quaint.2024.11.003","DOIUrl":"10.1016/j.quaint.2024.11.003","url":null,"abstract":"<div><div>High-resolution predictive modeling of submerged landscapes has successfully allowed the detection of early archaeological sites that are presently underwater. These models have traditionally relied on geophysical techniques, which can be both time-consuming and expensive, especially for extensive survey areas. In contrast, geomorphological mapping using Machine Learning (ML) techniques has emerged as a rapid and accessible alternative with numerous advantages over conventional methods. In this work, we employ ML algorithms (Random Forest, Support Vector Machine, Partial Least Squares, and Principal Component Analysis) trained on land to analyze the seabed of Quintero Bay to identify relic landforms that characterize the paleolandscape within which the submerged early site GNLQ1 formed. The methodology also included a multicriteria analysis that integrated geological (geomorphological, tectonic, eustatic) and archaeological (attributes of non-submerged records in the region) approaches to delineate potential areas of archaeological interest. The findings of this work can guide and enhance future archaeological research. The results underscore the importance of possessing a comprehensive understanding of the study area and its associated variables to the successful application of ML techniques. This also applies to modeling drowned paleolandscapes. Nevertheless, despite these challenges, ML-based modeling of drowned paleolandscapes can provide an overview of the distribution of geoforms comprising the paleolandscape, which in turn can help identify future geophysical survey areas to focus on in the search for archaeological evidence, thereby improving our understanding of the relationship between early human groups and these landscapes.</div></div>","PeriodicalId":49644,"journal":{"name":"Quaternary International","volume":"712 ","pages":"Article 109585"},"PeriodicalIF":1.9,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143148426","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 Holocene seismic uplift events depicted by coastal karst formations in Bali, Indonesia
IF 1.9 3区 地球科学
Quaternary International Pub Date : 2024-12-01 DOI: 10.1016/j.quaint.2024.10.009
Miklós Kázmér , Rikza Nahar , Krzysztof Gaidzik
{"title":"Late Holocene seismic uplift events depicted by coastal karst formations in Bali, Indonesia","authors":"Miklós Kázmér ,&nbsp;Rikza Nahar ,&nbsp;Krzysztof Gaidzik","doi":"10.1016/j.quaint.2024.10.009","DOIUrl":"10.1016/j.quaint.2024.10.009","url":null,"abstract":"<div><div>Limestone shores record earthquake-related uplift and subsidence worldwide. While comprehensive investigations exist for the Mediterranean and Japan, only limited studies are available in other regions. In this study, we analyze the carbonate shore of the Sunda Arc on Bali Island, Indonesia, in terms of tectonic uplift/subsidence. We surveyed coastal profiles of terraces and notches, identifying coastal karst features and bioerosion traces and determining their position relative to sea level. We found a set of marine terraces at Suluban Beach: <em>Level A</em> (lowest) <em>–</em> the active reef pavement with occasional surf potholes; <em>Level B</em> – 0.5–0.7 m above level <em>A,</em> with surf potholes and channels; <em>Level C –</em> 0.8 m above level <em>B</em>, heavily pitted by flat-bottomed pans, separated by heavily karstified ridges; <em>Level D –</em> 2 m above level C, karstified surface, with several decimetres deep karren. The increasing depth of coastal karst features marks a longer time of exposure to the sea, both in the intertidal and the supratidal zone. Holocene sea level reached its present-day position about 5000–6000 years ago; therefore, all coastal features, which require the action of the sea, salt water, and wave action to develop, formed following this period. Bali is on the front of the overriding plate in the Sunda arc. Seismicity is expressed by the uplift of the coastal zone. We propose that seismic events of moment magnitude 6.5–7, with a few hundred years return period, can produce the observed repeated surface uplift of 0.5–2 m in Bali.</div></div>","PeriodicalId":49644,"journal":{"name":"Quaternary International","volume":"712 ","pages":"Article 109577"},"PeriodicalIF":1.9,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143148480","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Environmental changes and historical occupation at Oued Laksar (Ksar Seghir), Morocco
IF 1.9 3区 地球科学
Quaternary International Pub Date : 2024-12-01 DOI: 10.1016/j.quaint.2024.10.010
Ana Maria Costa , Maria da Conceição Freitas , André Teixeira , Pedro J.M. Costa , Ricardo N. Santos , Mário Cachão , Francisco Fatela , Ricardo Pereira , João Pedro Tereso , Vera Paio Lopes , Roberto Bao , Abdelatif El-Boudjay
{"title":"Environmental changes and historical occupation at Oued Laksar (Ksar Seghir), Morocco","authors":"Ana Maria Costa ,&nbsp;Maria da Conceição Freitas ,&nbsp;André Teixeira ,&nbsp;Pedro J.M. Costa ,&nbsp;Ricardo N. Santos ,&nbsp;Mário Cachão ,&nbsp;Francisco Fatela ,&nbsp;Ricardo Pereira ,&nbsp;João Pedro Tereso ,&nbsp;Vera Paio Lopes ,&nbsp;Roberto Bao ,&nbsp;Abdelatif El-Boudjay","doi":"10.1016/j.quaint.2024.10.010","DOIUrl":"10.1016/j.quaint.2024.10.010","url":null,"abstract":"&lt;div&gt;&lt;div&gt;Laksar is a small river near the village of Ksar Seghir, located between Tangier and Ceuta (Morocco), strategic points to control the Strait of Gibraltar over centuries. The river outlets at the western part of a sandy beach that can block the fluvial discharge in years of low precipitation/river flow.&lt;/div&gt;&lt;div&gt;The area is densely occupied since the 5th century BC, during the roman period and Early Middle Age in the archaeological site of Dhar d’Aseqfane, located around 1 km from the mouth of the river. The coastal town of Ksar Seghir was founded on the eastern margin and was used as a shipyard for Moroccan dynasties after the 12th century. During the 15th and 16th centuries, Portugal occupied Ksar Seghir to control the Strait and to increase its power in North Africa. After the Portuguese left the site remained abandoned. The present-day Moroccan village developed in the 20th century, first expanding on the western river slope and gradually encompassing the archaeological site.&lt;/div&gt;&lt;div&gt;This work aims to i) characterize the environmental evolution of the Laksar River; ii) identify potential records of extreme events such as floods or tsunamis; and iii) explore the relationship between the landscape dynamics and human occupation.&lt;/div&gt;&lt;div&gt;To achieve these goals, a ∼5.4 m long sediment core - KS1 - was studied applying high-resolution multiproxy analyses (X-Ray, magnetic susceptibility, sedimentology, organic chemistry and micropalaeontology) together with &lt;sup&gt;14&lt;/sup&gt;C dating to establish a chronological model.&lt;/div&gt;&lt;div&gt;The sedimentary sequence corresponds to intercalations of fine sand and mud. Results point to deposition in subtidal conditions between the core base (ca. 2500 cal BP) and the 15th century AD (388 cm below surface). The dominance of marine foraminifera assemblages with high number of juveniles and high diversity index suggests an environment under open marine conditions during this period. Conversely, the low δ&lt;sup&gt;13&lt;/sup&gt;C values, coupled with the presence of charophytes and Cretaceous, Paleogene and Neogene reworked calcareous nannofossils reflect the contribution of fluvial processes. The sedimentary record underscores fluctuations in fluvial discharge, beach morphology and marine influence. The accumulation of magnetic (heavy) minerals at the core base is the likely result of at least one high-energy event.&lt;/div&gt;&lt;div&gt;Following the onset of Portuguese occupation of Ksar Seghir (15th century), the sedimentation rate increases, silting-up the channel margins. Deposition occurs under low subtidal to intertidal conditions. Foraminifera assemblages point to a low salinity environment; coarse materials are mostly constituted by minerogenic particles transported by the fluvial network. Changes in the sedimentary succession (heavy-minerals accumulation, higher marine influence and rip-up clasts) were detected between 219 cm and 140 cm depth below surface that, according to the age-model, overlap temporally with the Lisb","PeriodicalId":49644,"journal":{"name":"Quaternary International","volume":"712 ","pages":"Article 109578"},"PeriodicalIF":1.9,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143148425","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Mapping Early Holocene to contemporary surface processes and human landscapes west of the lower White Nile (central Sudan) 白尼罗河下游以西(苏丹中部)全新世早期到当代地表过程和人类景观的映射
IF 1.9 3区 地球科学
Quaternary International Pub Date : 2024-11-29 DOI: 10.1016/j.quaint.2024.109592
Stefano Costanzo , Andrea Zerboni , Mauro Cremaschi , Donatella Usai
{"title":"Mapping Early Holocene to contemporary surface processes and human landscapes west of the lower White Nile (central Sudan)","authors":"Stefano Costanzo ,&nbsp;Andrea Zerboni ,&nbsp;Mauro Cremaschi ,&nbsp;Donatella Usai","doi":"10.1016/j.quaint.2024.109592","DOIUrl":"10.1016/j.quaint.2024.109592","url":null,"abstract":"<div><div>Morphogenetic surface processes and anthropogenic landscape alterations have been tied together throughout the ages in the so-called <em>human-environmental nexus</em> since the inception of humankind as an active agent in the shaping of ecosystems. Here, we present instances of such interactions from an archaeologically paramount area west of the lower White Nile (central Sudan), where the sprawling mega conurbation of Sudan's capital city, and its peripheral infrastructural anthromes, intermingle with prehistoric human-inhabited landscapes, masking and disrupting natural and archaeological features while, in turn, increasing the rich and complex stratification of the human presence in the Sahel. A comprehensive examination of the geomorphological palimpsest, carried out in the field and through remote sensing, is provided, and is accompanied by a contextualised illustration of the known regional Holocene prehistoric, protohistoric and later archaeology.</div><div>This research highlights the importance of carrying out geomorphological, geoarchaeological and remote sensing investigations to reach a fuller comprehension of the archaeological palimpsest of a region, while also providing a vivid tool for promoting survey activities in underexplored areas and stimulating novel research questions.</div></div>","PeriodicalId":49644,"journal":{"name":"Quaternary International","volume":"715 ","pages":"Article 109592"},"PeriodicalIF":1.9,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142748630","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
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