首页期刊导航|Quaternary international: The journal of the International Union for Quaternary Research
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Quaternary international: The journal of the International Union for Quaternary Research
Elsevier Science
Quaternary international: The journal of the International Union for Quaternary Research

Elsevier Science

1040-6182

Quaternary international: The journal of the International Union for Quaternary Research/Journal Quaternary international: The journal of the International Union for Quaternary ResearchAHCIISTP
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    Climate frameworks for the Middle Stone Age and Later Stone Age in Northwest Africa

    Boisard S.Burke A.Wren C.D.Timbrell L....
    1.1-1.17页
    查看更多>>摘要：© 2024 The AuthorsThis paper examines climate conditions in Northwest Africa for Marine Isotope Stage 4, 3, and 2 (71,000–11,000 years ago) and their impact on the distribution of potential suitable areas on a regional scale. The analysis uses climate simulations to model: 1) the geographical extent and variability of macro-refugia based on ethnographic data; and 2) the frequency of suitable areas based on climate ranges obtained at dated archaeological occupations. The results include the production of maps of MSA and LSA site distribution, and annual precipitation and temperature values for each dated human occupation. The macro-refugia models confirm the persistence and low variability of ecological macro-refugia along the Mediterranean coast but reveal limitations in Central Sahara. Macro-refugia models aligned closely with climate-archaeological models, except for Marine Isotope Stage 4. Despite the general spatio-temporal limitations of climate simulations, our study offers valuable data to be integrated with local environmental proxies. These climate frameworks and insights can contribute to the exploration of past human demography, connectivity and human-environment interactions across different scales of analysis.
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    Response of sensitive grain size components in the muddy area off the southern coast of Weihai city, China, to Holocene climate and environmental changes

    Feng X.Liu J.Wang S.Zhang Y....
    1.1-1.12页
    查看更多>>摘要：© 2024 Elsevier Ltd and International Union for Quaternary ResearchStudying marine sediment is crucial for understanding the processes and mechanisms of Holocene climate and environmental changes. In this study, we analyzed the grain size distribution of the sediments from WHZK01 Core (0–14.95 m) in the muddy area off the southern coast of Weihai city, and extracted the sensitive grain size (SGS) using the grain size-standard deviation method, to further analyse the sediment transport mechanism since the Holocene and its significance as an environmental indicator in the climate change. The results show that the sediments in WHZK01 Core is mainly composed of silt and clayey silt, with poor sorting and a positive skewness, and primarily transported by suspension and saltation. We identified three SGSs: SGS 1 (<15.63 μm), SGS 2 (15.63 μm–148.65 μm), and SGS 3 (>148.65 μm), corresponding to the fine, medium, and coarse components of the sediment, respectively. Among them, SGS 2 exhibits a strong correlation with events of intensified East Asian winter monsoon(EAWM). Based on the variations in this grain size fraction, eight prominent EAWM intensification events over the past ∼11,000 years (Holocene) were identified: 8100–7600 a BP, 6300–6000 a BP, 5500–5050 a BP, 4600–4200 a BP, 4100–3600 a BP, 2850–2400 a BP, 1900–1500 a BP and 700-175 a BP, which are good indicators of palaeoclimatic environmental changes.
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    Active faulting of the southern segment of the Rhine River Fault, southern Germany: Geomorphological and paleoseismological evidence

    Pena-Castellnou S.Hurtgen J.Reicherter K.Baize S....
    1.1-1.17页
    查看更多>>摘要：© 2024 The AuthorsOur study focuses on the southern segment of the Rhine River Fault, located in one of the most seismically active regions in intraplate Europe, at the southern end of the Upper Rhine Graben and forming part of the eastern Rhine Graben Boundary Fault. It stands out due to its impressive geomorphological expression in the landscape near the village of Tunsel, in southwestern Germany. We present details about the timing of fault activity and the contribution of earthquakes to the morphology, as this information is crucial for seismic hazard assessment, considering its location 8 km from the Fessenheim Nuclear Power Plant. Through the integration of the sedimentary sequences, morphotectonic observations, shallow geophysics, and paleoseismological trenching, our findings demonstrate that several earthquakes along the RRF have ruptured the surface (M6.7 ± 0.5). The youngest surface rupturing earthquake occurred during medieval times (EZ) and the penultimate event (EY) is constrained by stratigraphic correlation with reworked Loess deposits dated to the Younger Dryas (ca. 13 kyr BP). Three older earthquake events have also been unearthed (EX, EW and EV) occurring prior to the Late Glacial Maximum, where event EX led to considerable lateral spread at the banks of the Pleistocene Rhine river. Vertical displacements reach up to 0.5 m and lateral offsets up to max. 1.5 m per earthquake event, consistently with a 15 - 30 km-long rupture of this segment of the Rhine River Fault.
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    Diatom assemblages indicated ecological shifts over the past two centuries in Bosten Lake, northwest China: Natural and anthropogenic forcings

    Farqan M.Xiang L.Jiang L.Wang W....
    1.1-1.11页
    查看更多>>摘要：© 2024 Elsevier Ltd and International Union for Quaternary ResearchArid Central Asia (ACA), accounting for one-third of the world arid regions, is noted for its sparse freshwater resources and delicate ecosystems. Lakes in this region are sensitive to the complex interactions between climate warming, human impact, and the water cycle, affecting aquatic ecosystems as well as species distributions. Here, we reanalyzed relationships between measured environmental variables and the spatial distribution of 40 previously published lake surface sediment diatom (Bacillariophyceae) assemblages along with synthesized sediment cores from 4 distinct locations in Bosten Lake with the intention of developing a diatom-inference model for water depth. Diatom assemblage variations differed across surface sediment samples and within cores in Bosten Lake. The initial period (1770–1910 CE) is characterized by oligotrophic taxa such as Lindavia radiosa and Navicula peroblonga, which transitioned towards meso-eutrophic species such as Pseudostaurosira, Staurosira, and Staurosirella spp. (formerly classified in the genus Fragilaria) during 1910–1960 CE and notably lake became more eutrophic post-1960, marked by the abundance of Fragilaria cf. crotonensis. Redundancy analysis (RDA) showed that lake water depth explained a statistically significant portion of diatom assemblage variations. Weighted-averaging partial least squares (WA-PLS) is used to develop a diatom-based depth inference model (Rjack2 = 0.94, RMSEP = 1.08 m, and maximum bias = 2.57 m) based on diatom optima from Bosten Lake. Diatom-depth reconstructions and changes in diatom community composition are of great importance to track lake ecosystem dynamics, ensuring the sustainability of vital freshwater resources in the ACA and beyond.
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    Transient fluvial incision in the Western Han River Basin: Implications for the late Cenozoic rock uplift of the Western Qinling Mountains, northeastern Tibetan Plateau

    Shi X.Yang Z.Dong Y.Zhou B....
    1.1-1.13页
    查看更多>>摘要：© 2024 Elsevier Ltd and International Union for Quaternary ResearchSituated in the northeastern Tibetan Plateau, the Western Qinling Mountains have undergone foreland propagation and surface uplift due to the northeastward expansion of the Tibetan Plateau since the late Cenozoic. In this study, the differential rock uplift and fluvial incision were investigated by extracting longitudinal profiles of the 227 major tributaries of the Western Han River Basin, which are located in the hinterland of the Western Qinling Mountains. Of 227, 178 tributaries have “slope-break” knickpoints. Channel segments upstream of knickpoints with low steepness indices represent the relict low-relief landscape, while the downstream of knickpoints with higher steepness indices represents the adjusting landscape formed after the knickpoint initiation. The spatial patterns of channel steepness indices show the western part of the Western Han River Basin having a higher rock uplift rate than the eastern part. Three-stage rock uplift of the Western Qinling Mountains has been identified by the shape of the longitudinal profile of the Western Han River. The magnitude of fluvial incision in the three-stage is about ∼180 m, ∼380 m, and ∼100 m, respectively. The results of this study reveal that the tectonic uplift of northeastern Tibetan Plateau has regulated the late Cenozoic rock uplift and fluvial incision in the Western Qinling Mountains, and highlight the potential use of channel profiles as indicators for tectonic forcing.
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