Quaternary International最新文献_第6页

Late Pleistocene and Middle Holocene dynamic environmental transitions in sediments of drainless depressions (Raciąska Plain, Poland) in the context of regional climate changes 区域气候变化背景下波兰Raciąska平原无排水洼地沉积物的晚更新世-中全新世动力环境变迁

IF 1.8 3区地球科学 Q3 GEOGRAPHY, PHYSICAL

Quaternary International

Pub Date : 2025-11-26 DOI: 10.1016/j.quaint.2025.110068

Joanna Gadziszewska , Monika Niska , Jerzy Jonczak

The Raciąska Plain is a foreland area marking the extent of the last glaciation, located along the outflow of glacial waters. For years, it has been the subject of scientific interest due to its distinctive terrain morphology. In the vicinity of the Wkra River valley, there are endorheic depressions where the sedimentation of organic deposits takes place. The properties of the sediments accumulating at the bottom of these basins result from fluctuations in climatic and environmental conditions, making them sensitive indicators of environmental change. The aim of the conducted research was to reconstruct the evolutionary history of the Mak endorheic basin by analyzing organic sediments from two profiles (Mak-1, Mak-2). The analysis of two profiles from different zones of the same basin—with varying morphometric characteristics and differing degrees of connectivity with river waters—made it possible to trace the ecosystem's response to regional climate changes and to compare the differences and similarities in the biotic and abiotic responses recorded in the sediments. As part of the study, palynological, geochemical, and microfaunal (Cladocera) analyses were carried out on sediments deposited during the Late Glacial as well as the Early and Middle Holocene. The results indicate varying dynamics of sediment accumulation at the studied sites, which stem from local geomorphological and hydrological conditions. The differing directions of environmental change in the two profiles are evidenced by the distinct species composition and frequency of cladocerans, as well as differences in the presence of non-pollen palynomorphs (CAZM, LPAZ). The Mak-1 profile more clearly reflects the dynamics of fluctuations in climatic and hydrological conditions. In contrast, sediment accumulation in the Mak-2 profile occurred under more stable conditions, which favored the accumulation of organic matter and the development of aquatic biocenoses. The findings provide valuable information on environmental changes in the Raciąska Plain, contributing to the existing body of paleoecological data and offering comparative material for regional analyses. They also highlight the importance of a multi-site approach in reconstructing the natural history of water bodies.

Raciąska平原是一个标志着末次冰期范围的前陆地区，位于冰川水的流出处。多年来，由于其独特的地形形态，它一直是科学兴趣的主题。在Wkra河流域附近，有内海坳陷，在那里发生了有机沉积物的沉积。这些盆地底部积聚的沉积物的性质是气候和环境条件波动的结果，使其成为环境变化的敏感指标。通过对两个剖面（mak1、mak2）有机沉积物的分析，重建了Mak内海盆地的演化历史。对同一流域不同地区的两条剖面进行分析——它们具有不同的形态特征和与河水的不同程度的连通性——使得追踪生态系统对区域气候变化的响应，并比较沉积物中记录的生物和非生物响应的异同成为可能。作为研究的一部分，孢粉学、地球化学和微动物（枝角类）分析在晚冰期和全新世早期和中期沉积的沉积物中进行。研究结果表明，研究地点泥沙积累的动态变化源于当地的地貌和水文条件。两个剖面的环境变化方向不同，主要表现在枝海类的种类组成和出现频率不同，以及非花粉类存在的差异（CAZM， LPAZ）。mak1剖面更清楚地反映了气候和水文条件波动的动态。相比之下，mak2剖面的沉积物聚集发生在更稳定的条件下，有利于有机质的聚集和水生生物群落的发育。这些发现为Raciąska平原的环境变化提供了有价值的信息，为现有的古生态数据体系做出了贡献，并为区域分析提供了比较材料。他们还强调了多地点方法在重建水体自然历史中的重要性。

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引用次数: 0

Vegetation pattern and succession from LGM to early Holocene in the eastern coastal zone of China 中国东部沿海地区LGM -全新世早期植被格局与演替

IF 1.8 3区地球科学 Q3 GEOGRAPHY, PHYSICAL

Quaternary International

Pub Date : 2025-11-22 DOI: 10.1016/j.quaint.2025.110057

Guangyi Bai , Keliang Zhao , Jian Wang , Lili Lu , Xiaoqiang Li

The eastern coastal zone of China plays a pivotal role in both terrestrial-marine ecosystem interactions and human subsistence in East Asia. During the deglaciation period from the Last Glacial Maximum (LGM, ∼21ka BP) to the early Holocene, rapid sea-level rise significantly influenced coastal and shelf ecosystems. However, the vegetation ecological landscape across the exposed shelf during this transgression remains poorly constrained. In this study, we integrate pollen and sedimentary records from representative marine and terrestrial cores collected in the eastern coastal zone of China and apply the biomization method to reconstruct vegetation patterns during key periods (LGM, 15 ka BP, 12 ka BP, and 10 ka BP) from the LGM to the early Holocene. Additionally, we examine the potential mechanisms underlying vegetation shifts in the coastal zone.

Our results show that during the LGM, the exposed Bohai and Yellow Sea shelf were primarily covered by steppe and meadow dominated by Artemisia and Chenopodioideae (Amaranthaceae), while the East China Sea shelf supported forest steppe to deciduous broadleaved forest. During the Last Deglaciation, the warmer climatic condition and rising sea level triggered a shift from terrestrial to marine deposition, driving a northward vegetation migration and the replacement of steppe by forest. Concurrently, sea-level fluctuation promoted the development of azonal vegetation in coastal zone. By the early Holocene, vegetation diversity increased, with steppe and meadow re-expanding along the Bohai and Yellow Sea coast, while the East China Sea coast became dominated by mixed deciduous-evergreen broadleaved forest. Our findings offer a scientific framework for predicting coastal ecosystem responses to future warming and illuminate the ecological context of human activities during periods of shelf exposure.

中国东部沿海地区在东亚陆海生态系统相互作用和人类生存中起着关键作用。在末次盛冰期（LGM, ~ 21ka BP）至全新世早期的消冰期，海平面的快速上升对沿海和陆架生态系统产生了显著影响。然而，在这次海侵期间，裸露陆架上的植被生态景观仍然没有得到很好的约束。本研究综合了中国东部沿海代表性海相和陆相岩心的花粉和沉积记录，应用生物化方法重建了LGM -全新世早期关键时期（LGM、15 ka BP、12 ka BP和10 ka BP）的植被格局。此外，我们还研究了海岸带植被转移的潜在机制。结果表明，在LGM期间，裸露的渤海和黄海陆架主要被以蒿科和藜科植物为主的草原和草甸覆盖，而东海陆架则支持森林草原到落叶阔叶林。在末次消冰期，气候变暖和海平面上升引发了从陆地沉积到海洋沉积的转变，推动了植被向北迁移，森林取代了草原。同时，海平面波动促进了海岸带地带性植被的发展。到全新世早期，植被多样性增加，沿渤海和黄海沿岸草原和草甸重新扩张，而东海沿岸以落叶-常绿阔叶林为主。我们的研究结果为预测沿海生态系统对未来变暖的反应提供了一个科学框架，并阐明了大陆架暴露期间人类活动的生态背景。

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引用次数: 0

Microtexture and provenance signatures for oscillations of the late Pleistocene Scandinavian Ice Sheet in Rautuvaara, north-western Finland 芬兰西北部Rautuvaara晚更新世斯堪的纳维亚冰盖振荡的显微结构和物源特征

IF 1.8 3区地球科学 Q3 GEOGRAPHY, PHYSICAL

Quaternary International

Pub Date : 2025-11-19 DOI: 10.1016/j.quaint.2025.110055

Ninna Immonen , Kari Strand , Pertti Sarala , Juha Pekka Lunkka

In order to understand sedimentary processes and dynamics of ice sheet oscillations on the eastern flank of the Scandinavian Ice Sheet (SIS) near its glaciation centre, we carried out quartz grain surface microtextural, and heavy mineral studies from the Rautuvaara section in north-western Finland which has widely considered as the stratotype for the northern Fennoscandian Late Pleistocene. We investigated the two uppermost Middle-Late Weichselian tills and the interbedded fine sediments, which, according to published age constraints, were deposited during the late Pleistocene Marine Isotope Stages (MIS) 3 and 2. The purpose of this study is to use varietal heavy mineral analysis to better constrain sediment sources for studied sediments and to test a theory of ice flow origin in this area. Microtextural study is used to identify first cycle subglacial processes from multiple transport processes during deglaciations.

At the stratigraphically lowest studied till bed, the sediment grain characteristics indicate that primary transport processes were subglacial and the SIS advanced from SSW across the area during the Middle Weichselian (MIS 3) as skarn and iron ore minerals are dominant heavy minerals. The upper part of the till bed bears an imprint of some longer distance transport processes from NW granitoid dominant provenance. The grain surface microtextures of the overlying sandy diamicton bed do not show any specific transport signature, suggesting that this bed consist of supra- or englacial debris deposited by a retreating ice front through mass flow. Subsequent layers of interbedded horizontal to rippled and massive sand and silt are characteristic of glaciofluvial transport processes representing shallow to deepening water conditions and gradually basin filling in a glaciolacustrine setting. The occurrence of highly stable detrital minerals in sand, like epidotite, garnet and zircon indicate clear reworking of earlier materials. The uppermost massive till represents Late Weichselian (MIS 2) glacial advance phase again dominantly from SW including reworked Rautuvaara iron ore indicative heavy minerals and showing multiple transport histories in quartz sand grains microtextures, being affected by some chemical abrasion.

为了了解斯堪的纳维亚冰盖（SIS）东侧冰川中心附近的沉积过程和冰盖振荡动力学，我们在芬兰西北部的Rautuvaara剖面进行了石英颗粒表面微结构和重矿物研究，该剖面被广泛认为是北芬诺斯坎德晚更新世的层型。我们研究了两个最上层的中-晚期魏奇塞世斜坡和互层细粒沉积物，根据已发表的年龄限制，它们沉积于晚更新世海相同位素阶段（MIS） 3和2。本研究的目的是利用各种重矿物分析来更好地约束所研究沉积物的沉积物来源，并验证该地区冰流起源的理论。微结构研究用于从脱冰过程的多个输运过程中识别第一旋回冰下过程。在地层最底层，沉积物颗粒特征表明，主要的搬运过程为冰下搬运，在中魏希世（MIS 3），矽卡岩和铁矿矿物是主要的重矿物，从SSW向整个地区推进。土层上部有来自NW花岗质优势物源的较长距离输运的印记。上覆砂质直径层的颗粒表面显微结构没有显示出任何特定的搬运特征，表明该层是由冰锋通过物质流消退而沉积的冰上或冰上碎屑组成的。随后的层状互层水平到波纹和块状沙粉是冰川-河流运输过程的特征，代表了冰川-湖泊环境下浅到深的水条件和逐渐的盆地填充。黄铁矿、石榴石、锆石等碎屑矿物具有较高的稳定性，表明早期物质发生了明显的改造。最上面的块状矿体代表晚期魏希塞利世（MIS 2）冰川推进期，主要来自西南，包括重加工的Rautuvaara铁矿，指示重矿物，在石英砂颗粒微结构中显示出多种运输历史，受一定的化学磨损影响。

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引用次数: 0

New insights into the formation of postglacial fracture valleys in Denmark using LiDAR, and towed Transient Electromagnetic Methods 利用激光雷达和牵引瞬变电磁法对丹麦冰川后断裂山谷形成的新见解

IF 1.8 3区地球科学 Q3 GEOGRAPHY, PHYSICAL

Quaternary International

Pub Date : 2025-11-19 DOI: 10.1016/j.quaint.2025.110052

Nicolaj K. Larsen , Kristian B.K. Romvig , Lis Allaart , Christos Boufidis , Thue S. Bording

The presence of postglacial fracture valleys in Denmark has been known since the early 20th century. Their mode of formation has never been fully understood, but they are often considered to originate from the reactivation of deep-seated faults in postglacial time in relation to glacio-isostatic adjustments. This study investigates fracture valleys from Denmark regarding their morphology, age, and mode of formation using high-resolution LiDAR, and towed Transient Electromagnetic Method (tTEM). Eleven areas in central Jutland have been found to host 371 fracture valleys. The c. 0.04–8 km long fracture valleys are in most places located parallel to tunnel valleys, which are cut into Paleogene clays. Based on the cross-cutting relationship between the fracture valleys and glacial- and periglacial landscape features, our study confirms that they were formed in postglacial time, most likely between c. 18–15 ka BP. Our findings suggest that the fracture valleys in Denmark are unrelated to deep tectonic faults and instead developed on the flanks of tunnel valleys cut into Paleogene clays by differential compaction by glacial loading and unloading during the last glaciation. The differential compaction led to local failures along tunnel valleys that are expressed in the present land surface as 5–10 m deep fracture valleys. Our findings may have important societal implications concerning the risk assessment of neotectonic activity in Denmark.

自20世纪初以来，人们就知道丹麦存在冰期后断裂谷。它们的形成方式从未被完全理解，但它们通常被认为是源于冰川-均衡调整相关的后冰期深部断裂的再激活。本研究利用高分辨率激光雷达和牵引瞬变电磁法（tTEM）研究了丹麦裂缝谷的形态、年龄和形成模式。在日德兰半岛中部的11个地区发现了371个裂缝谷。长0.04 ~ 8 km的裂缝谷多与隧道谷平行，由古近系粘土切割而成。根据断裂谷与冰川和冰缘景观特征的交叉关系，我们的研究证实它们形成于冰期后，最有可能在c. 18-15 ka BP之间。研究结果表明，丹麦的裂缝谷与深部构造断裂无关，而是在末次冰期冰川加载和卸载的不同压实作用下，在古近系粘土中切割的隧道谷两侧发育的。压实差异导致沿隧道谷的局部破坏，在现今地表表现为5 ~ 10m深的断裂谷。我们的发现可能对丹麦新构造活动的风险评估具有重要的社会意义。

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引用次数: 0

Evidence of bipolar knapping of mammoth ivory at Medzhybizh A: Technological and experimental insights from a lower Palaeolithic context Medzhybizh A地区猛犸象象牙双极性断裂的证据：来自旧石器时代较低背景的技术和实验见解

IF 1.8 3区地球科学 Q3 GEOGRAPHY, PHYSICAL

Quaternary International

Pub Date : 2025-11-19 DOI: 10.1016/j.quaint.2025.110049

Oleksandr Naumenko , Vadim Stepanchuk

This paper presents the results of a technological and experimental study of mammoth ivory artefacts recovered from Layer II–I of the Medzhybizh A Lower Palaeolithic site in western Ukraine. Ivory is an unusual material in prehistoric knapping traditions, especially in earlier periods. Our experiments demonstrate that the workability of ivory depends strongly on its preservation state: over-dried specimens are brittle and fragment easily, while better-preserved ones allow more controlled knapping. The analysis identifies diagnostic traces of intentional modification on archaeological specimens, including bipolar on anvil knapping features, scars, facets, impact points, and intensive edge trimming. A deliberately shaped ivory pieces produced by knapping suggests that hominins at Medzhybizh A employed a flexible and opportunistic raw material strategy, occasionally experimenting with ivory as a substitute for lithic materials. While the technological actions mirror stone knapping techniques, no evidence indicates adaptation to the specific properties of ivory. The results provide unique insights into the variability and adaptability of raw material strategies during the Middle Pleistocene and contribute to discussions on early ivory processing traditions.

本文介绍了对乌克兰西部梅德日比什旧石器时代晚期遗址i - i层出土的猛犸象象牙制品进行技术和实验研究的结果。在史前的敲击传统中，象牙是一种不寻常的材料，尤其是在早期。我们的实验表明，象牙的可加工性在很大程度上取决于其保存状态：过度干燥的标本易碎，容易破碎，而保存较好的标本则可以更有控制地敲击。分析确定了考古标本上故意修改的诊断痕迹，包括双极砧敲击特征、疤痕、切面、冲击点和密集的边缘修剪。在Medzhybizh A，一件经过精心雕琢的象牙制品表明，古人类采用了一种灵活的、机会主义的原材料策略，偶尔会尝试用象牙来代替石器材料。虽然这些技术行动反映了石头敲击技术，但没有证据表明它们适应了象牙的特定特性。研究结果对中更新世期间原料策略的可变性和适应性提供了独特的见解，并有助于讨论早期象牙加工传统。

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引用次数: 0

The Early Acheulean on the Ethiopian highlands: The case of Gombore IB at Melka Kunture (Upper Awash, Ethiopia) 埃塞俄比亚高原上的早期阿舍利人：以Melka Kunture（上阿瓦什，埃塞俄比亚）的Gombore IB为例

IF 1.8 3区地球科学 Q3 GEOGRAPHY, PHYSICAL

Quaternary International

Pub Date : 2025-11-19 DOI: 10.1016/j.quaint.2025.110050

Eduardo Méndez-Quintas , Margherita Mussi

引用次数: 0

Tectonic and climatic controls on the evolution of the middle Yellow River: new insights from sedimentology and detrital zircon U-Pb geochronology 构造和气候对黄河中游演化的控制：沉积学和碎屑锆石U-Pb年代学的新认识

IF 1.8 3区地球科学 Q3 GEOGRAPHY, PHYSICAL

Quaternary International

Pub Date : 2025-11-19 DOI: 10.1016/j.quaint.2025.110059

Xu Lin , Haijin Liu , Jing Liu-Zeng , Milo Barham , Maximilian Dröllner , Siyi Li

Understanding the formation and evolution of the middle reaches of the Yellow River is essential for comprehending the overall development of the modern Yellow River. However, two competing hypotheses propose that the formation of the middle Yellow River occurred either during the Neogene or the Quaternary. To resolve this ambiguity, we performed detrital zircon U-Pb geochronology (n = 275) and particle size analysis (n = 490), as part of a broader sedimentological investigation of Neogene strata within the Jinshan Canyon and Sanmenxia Basin of the middle Yellow River and contextualized these data with published paleomagnetic ages and regional tectonic and climatic data. Within the middle Jinshan Canyon, detrital sediments in the Weijiawa section at 8.1 Ma primarily originated from the adjacent Lvliang Mountains. However, the detrital sediments in the nearby Mujiawa section at 3.6 Ma are significantly influenced by the more distal northern Ordos Block suggesting longer distance fluvial connectivity. The composition of clastic materials in the Jiwangqiao section of Sanmenxia Basin to the south of the Jinshan Canyon is influenced by the Wei River and proximal Zhongtiao Mountains at 5.0 and 3.6 Ma, while it is shaped by the Yellow River in the middle reaches at 4.4 and 3.8 Ma. The observed provenance changes can be primarily attributed to enhanced recycling of Mesozoic sandstone and mudstone, driven by three key factors: (1) the northeastward expansion of the Tibetan Plateau, (2) the intensification of the East Asian summer monsoon system, and (3) inherent lithological variations within the geological formations. This reflects the complex interplay between tectonic activity, climatic forcing, and bedrock susceptibility in shaping the regional geomorphology.

了解黄河中游的形成与演变，对全面认识近代黄河的发展至关重要。然而，两种相互竞争的假说认为，黄河中游的形成可能发生在新近纪或第四纪。为了解决这一模糊性，我们进行了碎屑锆石U-Pb年代学（n = 275）和粒度分析（n = 490），作为黄河中段金山峡谷和三门峡盆地新近系地层更广泛的沉积学研究的一部分，并将这些数据与已发表的古地磁年龄和区域构造和气候数据进行了对比。在金山峡谷中部，8.1 Ma魏家洼剖面碎屑沉积物主要来源于相邻的吕梁山脉。而穆家洼剖面附近3.6 Ma的碎屑沉积物则明显受到鄂尔多斯地块北部较远端的影响，表明河流连通性较长。金山峡谷以南三门峡盆地冀王桥段碎屑物质组成受渭河和中条山近端5.0和3.6 Ma的影响，而中游4.4和3.8 Ma受黄河的影响。这反映了构造活动、气候强迫和基岩敏感性在形成区域地貌方面的复杂相互作用。

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引用次数: 0

Freshwater invertebrate assemblages and environmental changes in the Late Pleistocene-Holocene of Salto de Piedra site (central Pampean Region, Buenos Aires, Argentina) 阿根廷布宜诺斯艾利斯中部潘潘地区Salto de Piedra遗址晚更新世-全新世淡水无脊椎动物组合与环境变化

IF 1.8 3区地球科学 Q3 GEOGRAPHY, PHYSICAL

Quaternary International

Pub Date : 2025-11-14 DOI: 10.1016/j.quaint.2025.110047

Pamela Steffan , Gustavo N. Gómez , Sara García-Morato , Jonathan E. Bellinzoni , Ricardo Bonini , Cristian M. Favier-Dubois , Claudia I. Montalvo , María Teresa Alberdi , M. Dolores Marin-Monfort , Yolanda Fernandez-Jalvo , José Luis Prado

Salto de Piedra is a paleontological site located in the Buenos Aires Province (Argentina) close to Olavarría City at the upper basin of Tapalqué Creek. This site provides new insights about the late Quaternary climatic evolution of the area. The taxonomic and taphonomic analyses of freshwater gastropods from this period allow us to evaluate the magnitude of environmental changes in the area. Paleoclimatic inferences at the top of the sequence (Late Pleistocene) indicate a trend from arid conditions at facies 8 to humid ones towards facies 11 (Early Holocene). This transition from arid to humid conditions is also reinforced by post-depositional taphonomic processes. These bioindicators are analyzed with data on the geochemistry of the deposits containing them. Results indicate the alternation of palustrine and lacustrine conditions. These variations of local conditions are correlated with regional records of nearby archaeological sites that inferred arid to humid environmental transitions.

Salto de Piedra是一个古生物遗址，位于阿根廷布宜诺斯艾利斯省，靠近Olavarría市，位于tapalquuquay河的上游盆地。该遗址为该地区晚第四纪气候演化提供了新的见解。对这一时期淡水腹足动物的分类和分类分析使我们能够评估该地区环境变化的程度。层序顶部（晚更新世）的古气候推断表明，从8相的干旱条件到11相的湿润条件（早全新世）的趋势。这种从干旱到潮湿的转变也被沉积后的埋藏过程所加强。这些生物指示物是用含有它们的矿床的地球化学数据来分析的。结果表明湖泊和湖泊条件发生了变化。当地条件的这些变化与附近考古遗址的区域记录相关，这些记录推断了干旱到潮湿的环境转变。

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引用次数: 0

Exploring alternative Neolithization trajectories in Northeast China (Nen River Basin) 东北地区（嫩江流域）新石器时代发展轨迹探索

IF 1.8 3区地球科学 Q3 GEOGRAPHY, PHYSICAL

Quaternary International

Pub Date : 2025-11-14 DOI: 10.1016/j.quaint.2025.110046

Yunchen Tan , Henny Piezonka , Peter D. Jordan

Understanding the drivers of diversity and change in regional Neolithization trajectories has emerged as a major theme in World Prehistory with new insights appearing in many parts of the globe. In Northeast Asia, research on Neolithic transition over the past two decades has focused primarily on millet and rice domestication and their role in the rise of farming, social complexity, and early Chinese civilization. However, not all regions followed this agricultural trajectory. Instead, several areas exhibit “alternative” pathways to sedentism, storage-based economies, and emergent social diversification, but these remain underrepresented in international literature. In Northeast China, the Nen River basin, located north of the early farming communities of the Yellow and Liao River basins, is one such region. The Nen River drains into the Songhua River, one of the major tributaries of the Amur River, which drains into the Pacific Ocean. Importantly, the Nen River basin includes extensive wetlands and rich mosaic environments, which emerged during climatic shifts during the Pleistocene-Holocene transition. These aquatic ecosystems supported a transition to broad-spectrum foraging, which in turn led to sedentism and emergent social complexity without any evidence of plant domestication or substantial reliance on staple crops. These sites flourished culturally and demographically under the ameliorating conditions of the Holocene Climatic Optimum, but underwent a transition to nomadic pastoralism after the 4.2 ka cold and aridity event, with many distinctive local cultural traditions persisting. In this paper, we present an integrated synthesis of currently available archaeological and palaeo-environmental records from the Nen River basin. The aim is to reconstruct the cultural and social developments that arose from human-environmental interactions from the Late Pleistocene into the middle and late Holocene in this vital region of Northeast Asia. Our research indicates that Neolithization here occurred independently of agriculture, supported instead by aquatic and terrestrial resources. We further highlight the global potential for studying diverse “Neolithicities” across different world regions, and conclude with a series of themes and questions that require further research and cross-cultural synthesis.

了解区域新石器化轨迹的多样性和变化的驱动因素已经成为世界史前史的一个主要主题，在全球许多地方出现了新的见解。在东北亚，过去二十年来对新石器时代过渡的研究主要集中在小米和水稻的驯化及其在农业兴起、社会复杂性和早期中国文明中的作用。然而，并非所有地区都遵循这种农业轨迹。相反，一些地区表现出了“另类”的定居主义、以储存为基础的经济和新兴的社会多样化的途径，但这些在国际文献中仍然没有得到充分的代表。在中国东北，嫩河流域，位于黄河和辽河流域早期农耕社区的北部，就是这样一个地区。嫩江流入松花江，松花江是阿穆尔河的主要支流之一，流入太平洋。重要的是，嫩河流域包括广泛的湿地和丰富的马赛克环境，这些环境在更新世-全新世过渡时期的气候变化中出现。这些水生生态系统支持向广谱觅食的过渡，这反过来又导致了定居生活和新兴的社会复杂性，没有任何植物驯化或对主要作物的大量依赖的证据。这些遗址在全新世气候优化条件下的文化和人口繁荣，但在4.2 ka寒干事件后经历了向游牧畜牧业的过渡，许多独特的地方文化传统得以保留。本文对嫩河流域现有的考古和古环境记录进行了综合分析。目的是重建东北亚这一重要地区从晚更新世到全新世中期和晚期人类与环境相互作用所产生的文化和社会发展。我们的研究表明，这里的新石器时代独立于农业，而是由水生和陆地资源支持的。我们进一步强调了在世界不同地区研究不同“新石器时代”的全球潜力，并总结了一系列需要进一步研究和跨文化综合的主题和问题。

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引用次数: 0

Formation mechanisms of large-scale ancient landslides in the Meigu River basin, eastern margin of Tibetan plateau

IF 1.8 3区地球科学 Q3 GEOGRAPHY, PHYSICAL

Quaternary International

Pub Date : 2025-11-10 DOI: 10.1016/j.quaint.2025.110045

Zhiqiang Yin , Liang Chen , Hai Shao , Dong Sun , Xiaoguang Qin , Dameng Li

As one of the most serious natural hazards, landslides have caused extensive destruction to buildings and natural environments worldwide. However, the formation mechanisms of ancient landslides remain poorly understood due to the lack of detailed landslide inventories and chronological constraints. In this study, we present a systematic investigation of large-scale landslides in the Meigu River Basin (MRB), located on the eastern margin of the Tibetan Plateau in southwest China. Using high–spatiotemporal-resolution remote-sensing imagery, field verification, and a series of radiometric dates, we aim to examine the potential triggers of regional landslide activity. The results show that large-scale ancient landslides were mainly controlled by active faults, folds, joints, and soft interlayers, which rendered rock groups susceptible to movement. The integration of radiocarbon (¹⁴C) and optically stimulated luminescence (OSL) dating indicates that the MRB landslides developed during three main periods: the last glacial (66–40 ka), the late Pleistocene to early Holocene (20–9 ka), and the middle to late Holocene (6–0.2 ka). These results suggest a close coupling between large-scale ancient landslide formation and climatic fluctuations. Overall, this study highlights that geological controls and climatic triggers were the two key factors governing large-scale landslide development in the region.

山体滑坡是最严重的自然灾害之一，在世界范围内对建筑物和自然环境造成了广泛的破坏。然而，由于缺乏详细的滑坡清单和时间限制，古代滑坡的形成机制仍然知之甚少。利用高时空分辨率遥感图像、实地验证和一系列辐射测量数据，我们旨在研究区域滑坡活动的潜在触发因素。结果表明：大型古滑坡主要受活动断裂、褶皱、节理和软夹层控制，岩体易发生运动；放射性碳（14C）和光学激发发光（OSL）测年综合表明，MRB滑坡发育在末次冰期（66 ~ 40 ka）、晚更新世至全新世早期（20 ~ 9 ka）和全新世中晚期（6 ~ 0.2 ka）三个主要时期。这些结果表明，大型古代滑坡的形成与气候波动之间存在密切的耦合关系。总体而言，本研究强调了地质控制和气候触发是控制该地区大规模滑坡发展的两个关键因素。

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