Quaternary Science Advances最新文献_第2页

Human Response to Cold Climate: First Evidence from the Tibetan Plateau during the Last Glacial Maximum

IF 2.9

Quaternary Science Advances Pub Date : 2025-01-01 DOI: 10.1016/j.qsa.2025.100269

Wenli Li , Weijian Zhou , Peng Cheng , Peixian Shu , Yikun Li , John Dodson , Yuda Chui , Yan Hu , Ling Yang , Hua Du , Xuefeng Lu

{"title":"Human Response to Cold Climate: First Evidence from the Tibetan Plateau during the Last Glacial Maximum","authors":"Wenli Li , Weijian Zhou , Peng Cheng , Peixian Shu , Yikun Li , John Dodson , Yuda Chui , Yan Hu , Ling Yang , Hua Du , Xuefeng Lu","doi":"10.1016/j.qsa.2025.100269","DOIUrl":"10.1016/j.qsa.2025.100269","url":null,"abstract":"<div><div>The Tibetan Plateau (TP) is a hotspot for early human history research, however, there is no evidence of prehistoric human activity on the southern TP during the Last Glacial Maximum (LGM). Thus, it remains unclear how the cold climate affected human activities and whether humans could survive such extremes on the Tibetan Plateau. Here, we present eight AMS <sup>14</sup>C dates obtained from charcoal at a newly discovered blade site-Pengbuwuqing (PBWQ) in the Yarlung Zangbo River Valley basin, southern TP. We have also identified ochre at Paleolithic sites on the TP for the first time. Our chronological data indicate the human occupation of the Yarlung Tsangpo River basin during MIS2 (cal 29.2–27.0 kyr B.P), (cal 25.03–24.37 kyr B.P), and (cal 23.7–23.1 kyr B.P). This site represents the first evidence of human activity during the LGM in the southern TP valley and indicates that the southern TP river valley could have served as a refugium enabling prehistoric humans to survive the cold LGM on the TP.</div></div>","PeriodicalId":34142,"journal":{"name":"Quaternary Science Advances","volume":"17 ","pages":"Article 100269"},"PeriodicalIF":2.9,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143174874","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Geospatial analysis of landslide susceptibility and safe relocation zones: Insights from recent disasters in Gofa Zone, Southern Ethiopia

IF 2.9

Quaternary Science Advances Pub Date : 2025-01-01 DOI: 10.1016/j.qsa.2025.100272

Natnael Agegnehu Ayele , Esubalew Mulugeta Engda , Taye Teshome Terefe , Eyasu Leta , Talema Moged Reda , Muralitharan Jothimani

{"title":"Geospatial analysis of landslide susceptibility and safe relocation zones: Insights from recent disasters in Gofa Zone, Southern Ethiopia","authors":"Natnael Agegnehu Ayele , Esubalew Mulugeta Engda , Taye Teshome Terefe , Eyasu Leta , Talema Moged Reda , Muralitharan Jothimani","doi":"10.1016/j.qsa.2025.100272","DOIUrl":"10.1016/j.qsa.2025.100272","url":null,"abstract":"<div><div>This study investigates landslide susceptibility and proposes potential relocation sites in the Gofa Zone of Southern Ethiopia, utilizing combined geospatial analysis techniques such as Geographic Information Systems (GIS) and Remote Sensing (RS). Factors such as slope, soil type, land use, rainfall, etc., were integrated into the analysis to identify the susceptible zones. A landslide susceptibility map was developed, categorizing the region into five susceptibility classes: very low, low, moderate, high, and very high. The analysis revealed that 11.74% of the Gofa Zone is classified as very low susceptibility, 31.33% falls under low susceptibility, and 30.02% is categorized as moderate susceptibility. Areas of high susceptibility cover 19.89%, while very high susceptibility zones account for 7.02% of the region. The findings indicate that high-risk areas are predominantly located in steep, mountainous terrains with unstable soils and intensive agricultural activities. In contrast, moderate and low-risk regions are characterized by more stable slopes and lower levels of human impact. Additionally, the study identifies potential relocation sites with minimal landslide risk, primarily located in flatter, stable terrains with less human encroachment. This study highlights the importance of combining GIS and RS for practical landslide risk assessment and provides valuable insights for disaster risk management, urban planning, and identifying safer areas for population relocation. The results are intended to assist local authorities and planners in making informed decisions to mitigate landslide hazards and promote sustainable regional development.</div></div>","PeriodicalId":34142,"journal":{"name":"Quaternary Science Advances","volume":"17 ","pages":"Article 100272"},"PeriodicalIF":2.9,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143437651","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The ichnology of White Sands (New Mexico): Linear traces and human footprints, evidence of transport technology?

IF 2.9

Quaternary Science Advances Pub Date : 2025-01-01 DOI: 10.1016/j.qsa.2025.100274

Matthew R. Bennett , Thomas M. Urban , David F. Bustos , Sally C. Reynolds , Edward A. Jolie , Hannah C. Strehlau , Daniel Odess , Kathleen B. Springer , Jeffrey S. Pigati

{"title":"The ichnology of White Sands (New Mexico): Linear traces and human footprints, evidence of transport technology?","authors":"Matthew R. Bennett , Thomas M. Urban , David F. Bustos , Sally C. Reynolds , Edward A. Jolie , Hannah C. Strehlau , Daniel Odess , Kathleen B. Springer , Jeffrey S. Pigati","doi":"10.1016/j.qsa.2025.100274","DOIUrl":"10.1016/j.qsa.2025.100274","url":null,"abstract":"<div><div>A travois is crafted from one or more wooden poles and is one of the simplest prehistoric vehicles. Although these devices likely played vital roles in the lives of ancient peoples, they have low preservation potential in the archaeological record. Here we report linear features associated with human footprints, some of which are dated to ∼22,000 years old, preserved in fine-grained sediments at White Sands National Park (New Mexico, USA). Using a range of examples, we identify three morphological types of trace in late Pleistocene sediments. Type I features occur as single, or bifurcating, narrow (depth > width) grooves which extend in planform from 2 to 50 m in length and trace either straight, gently curved or more irregular lines. They are associated with human footprints, which are truncated longitudinally by the groove and are not associated with other animal tracks. Type II examples are broader (width > depth) and form shallow runnels that typically have straight planforms and may truncate human footprints to one side. Type III examples consist of two parallel, equidistant grooves between 250 and 350 mm apart. They trace gently curving lines that can extend for 30+ m. Human footprints are associated with these features and may occur between, and to the side of, the parallel grooves. We review a range of possible interpretations including both human and non-human explanations and conclude that the most parsimonious explanation is that they represent drag marks formed by travois consisting of a single pole or crossed poles pulled by humans, presumably during the transport of resources. As such this unique footprint record may represent one of the earliest pieces of evidence for the use of transport technology.</div></div>","PeriodicalId":34142,"journal":{"name":"Quaternary Science Advances","volume":"17 ","pages":"Article 100274"},"PeriodicalIF":2.9,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143454620","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Landslide susceptibility assessment using the frequency ratio model in the Mae Chan River watershed, northern Thailand

IF 2.9

Quaternary Science Advances Pub Date : 2025-01-01 DOI: 10.1016/j.qsa.2024.100263

Pichawut Manopkawee, Niti Mankhemthong

{"title":"Landslide susceptibility assessment using the frequency ratio model in the Mae Chan River watershed, northern Thailand","authors":"Pichawut Manopkawee, Niti Mankhemthong","doi":"10.1016/j.qsa.2024.100263","DOIUrl":"10.1016/j.qsa.2024.100263","url":null,"abstract":"<div><div><em>A landslide</em> is a significant geological hazard that impacts society, the environment, and local infrastructures. The Mae Chan River watershed, a watershed that is surrounded by high erodible mountains, is particularly vulnerable to landslides. This research aimed to assess the susceptibility of landslides in the unique watershed using the frequency ratio approach. Landslide inventory data were 173 landslide scars in the mountainous region of the watershed. The data were extracted from satellite images that captured historical landslide scars on its surface. Landslide causative factors were selected based on causative elements observed in the watershed that potentially caused the previous landslide occurrences. These inventory data and causative factors were combined to create a landslide susceptibility index and classes. The analysis indicated that around 36 % of the entire watershed was highly prone to landslides, especially in the northwestern and southern high mountains. The remaining 43% and 21% of the watershed's area were classified as moderate and low landslide susceptibility classes, respectively. The landslide susceptibility data's accuracy, reliability, and predictability were verified using the area under the receiver operating characteristic (ROC) curve (AUC) analysis. The AUC values represented the success and prediction rates curve of 0.738 and 0.712, respectively, suggesting that the model performed reasonably well in identifying and predicting landslide susceptibility classes. The study highlights the qualification of landslide susceptibility mapping in a watershed in Thailand to other large-scale landslide hazard research.</div></div>","PeriodicalId":34142,"journal":{"name":"Quaternary Science Advances","volume":"17 ","pages":"Article 100263"},"PeriodicalIF":2.9,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143175257","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mid-to late Holocene palaeogeographic evolution of the Kalamas river delta, Epirus (Thesprotia), Greece

IF 2.9

Quaternary Science Advances Pub Date : 2025-01-01 DOI: 10.1016/j.qsa.2024.100264

Antoine Chabrol , Pierre Stephan , Georges Apostolopoulos , Kosmas Pavlopoulos , Adrien Gonnet , Eric Fouache

{"title":"Mid-to late Holocene palaeogeographic evolution of the Kalamas river delta, Epirus (Thesprotia), Greece","authors":"Antoine Chabrol , Pierre Stephan , Georges Apostolopoulos , Kosmas Pavlopoulos , Adrien Gonnet , Eric Fouache","doi":"10.1016/j.qsa.2024.100264","DOIUrl":"10.1016/j.qsa.2024.100264","url":null,"abstract":"<div><div>This paper examines the mid-to-late Holocene palaeogeographical evolution of the Kalamas river delta, the second largest delta in Epirus, Greece, which had previously lacked comprehensive palaeoenvironmental investigation despite its archaeological significance. Through an interdisciplinary approach, the research integrates geomorphological field surveys, Electrical Resistivity Tomography (ERT) profiles, core drilling, sedimentological and microfaunal analyses, associated with radiocarbon dating. The findings reveal four significant phases in the delta's evolution. Initially, freshwater wetlands existed in the southeastern part of the delta until at least 7429-7280 cal. BP. Subsequently, around 6627-6402 cal. BP, a peak in marine transgression established predominantly shallow marine environments. By approximately 5590-5191 cal. BP, accelerated delta progradation led to the development of open and restricted lagoons, likely formed by extensive littoral barriers or sandy spits. From 1874 to 1719 cal. BP, during the Antiquity and particularly during the Roman period, terrestrial alluvial sedimentation became prevalent, with continued delta progradation in subsequent centuries.</div><div>These results provide crucial insights into the geomorphological processes that have shaped the Kalamas delta and emphasize the taphonomic biases induced by environmental changes and progradation processes, which may account for the apparent lack of surface archaeological remains—many sites may have been destroyed or buried under sediment.</div></div>","PeriodicalId":34142,"journal":{"name":"Quaternary Science Advances","volume":"17 ","pages":"Article 100264"},"PeriodicalIF":2.9,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143175259","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Surficial geomorphic expressions along the Zanskar shear zone (ZSZ), NW Himalaya, India

IF 2.9

Quaternary Science Advances Pub Date : 2025-01-01 DOI: 10.1016/j.qsa.2024.100258

Omar Jaan Paul , Khalid Omar Murtaza , Malik Zubair Ahmad , Irfan Maqbool Bhat , Feroz Ahmad , Jehangeer Ahmad Mir , Waseem Qader , Suhail Hussain Sheikh , Shakil Ahmad Romshoo , Reyaz Ahmad Dar

{"title":"Surficial geomorphic expressions along the Zanskar shear zone (ZSZ), NW Himalaya, India","authors":"Omar Jaan Paul , Khalid Omar Murtaza , Malik Zubair Ahmad , Irfan Maqbool Bhat , Feroz Ahmad , Jehangeer Ahmad Mir , Waseem Qader , Suhail Hussain Sheikh , Shakil Ahmad Romshoo , Reyaz Ahmad Dar","doi":"10.1016/j.qsa.2024.100258","DOIUrl":"10.1016/j.qsa.2024.100258","url":null,"abstract":"<div><div>There is substantial evidence of the dynamic interplay between surficial geomorphic processes and active tectonics in the Zanskar Shear Zone (ZSZ), northwest Himalaya, India. The ZSZ is a result of tectonic conversion with a SW–NE orientation that began in the Late Cretaceous and became stronger in the Early Miocene as a result of the collision of the Indian and Eurasian plates. Earlier studies have addressed its tectonic activity and metamorphic activation. However, the contribution of active tectonics to the geomorphic evolution of the region is less understood. Using the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) Global Digital Elevation Model (GDEM) and Google Earth Imagery, various geomorphic features viz., alluvial fans, triangular facets, wineglass valleys, mountain fronts, knickpoints, and river terraces were identified and delineated. The study area was divided into three river sections viz., Suru, Doda, and Tsarap, running along or occasionally cutting across the strike of the ZSZ. The longitudinal river profiles suggest a relatively higher degree of tectonic activity along the Doda River, followed by the Tsarap and Suru Rivers. This spatial variation in the tectonic activity is also evident from the mountain front sinuosity index, wineglass valley index, triangular facets, and the morphometry of alluvial fans. Both the geomorphic features and morphometric parameters provide evidence of relative variation in the ZSZ activity along the Suru, Doda, and Tsarap River sections. Therefore, the present geomorphic evaluation suggests that the surficial (Quaternary) geomorphology documents the tectonic activity and its spatial variations along the ZSZ.</div></div>","PeriodicalId":34142,"journal":{"name":"Quaternary Science Advances","volume":"17 ","pages":"Article 100258"},"PeriodicalIF":2.9,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143174326","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Quaternary La Garrotxa volcanic field (NE of Iberia): A geochronological approach

IF 2.9

Quaternary Science Advances Pub Date : 2025-01-01 DOI: 10.1016/j.qsa.2025.100267

Joan Martí , Julia Ricci , Llorenç Planagumà , Gerardo J. Aguirre Díaz

{"title":"The Quaternary La Garrotxa volcanic field (NE of Iberia): A geochronological approach","authors":"Joan Martí , Julia Ricci , Llorenç Planagumà , Gerardo J. Aguirre Díaz","doi":"10.1016/j.qsa.2025.100267","DOIUrl":"10.1016/j.qsa.2025.100267","url":null,"abstract":"<div><div>Monogenetic volcanic fields exhibit extended periods of magmatic activity, often spanning several million to tens of millions of years. Understanding the evolution of this activity is challenging due to incomplete geological records and limited geochronological data. However, the relative volcanic stratigraphy and morphometric analysis of volcanic landforms enable the identification of temporal patterns in volcanic activity. These patterns often reveal clusters of eruptions interspersed with periods of relative inactivity, reflecting the tectonic evolution of the region, which influences magma generation and ascent.</div><div>Quantifying this temporal evolution is crucial for Quaternary monogenetic fields, as their activity may still be ongoing, posing potential risks. This is exemplified by the La Garrotxa volcanic field in the Catalan Volcanic Zone, part of the European Rift System, active from the mid-Pleistocene to the early Holocene. In this study, we present 15 new Ar-Ar ages, along with a comprehensive field review, to accurately establish the recent temporal evolution of this volcanic field, refining previous stratigraphies based solely on field relations and morphometric analysis. These new ages indicate that volcanic activity in the La Garrotxa Volcanic Field is more recent and frequent than previously believed, with significant implications for volcanic hazard assessment.</div></div>","PeriodicalId":34142,"journal":{"name":"Quaternary Science Advances","volume":"17 ","pages":"Article 100267"},"PeriodicalIF":2.9,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143175260","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Neanderthals’ recolonizations of marginal areas: An overview from Eastern Germany

IF 2.9

Quaternary Science Advances Pub Date : 2025-01-01 DOI: 10.1016/j.qsa.2024.100260

Andrea Picin

{"title":"Neanderthals’ recolonizations of marginal areas: An overview from Eastern Germany","authors":"Andrea Picin","doi":"10.1016/j.qsa.2024.100260","DOIUrl":"10.1016/j.qsa.2024.100260","url":null,"abstract":"<div><div>The Middle Paleolithic in Eastern Germany presents a unique context for understanding Neanderthal populations' dynamics within environmental shifts. The cyclical ice-sheet growth and advancements during the late Middle and Late Pleistocene caused occupational gaps in North-western and Central Europe and recurring episodes of recolonization from the southern regions. From cold tundra and steppe landscapes to forested habitats during climatic amelioration, these environmental changes significantly influenced Neanderthal settlement patterns and adaptive strategies. In this study, the lithic assemblages from some Middle Paleolithic sites stretched between Saxony and Saxony-Anhalt are analyzed. Despite migrations occurring over millennia, our study reveals that the unidirectional reduction scheme was continuously applied to different knapping methods remaining a common technological substrate during the whole Middle Paleolithic. The introduction of asymmetric bifacial tools during MIS 5c/MIS 5a did not alter predominant flake production methods. Contrariwise to support a techno-cultural stasis lasted several millennia, this study reveals that this technical continuity could be related to the changes in raw material size occurred during the Middle Pleistocene. Large erratic flint nodules during the Elsterian glaciation promoted loss-making behaviors, while the transport of smaller nodules during the Drenthe glaciation encouraged more intensive exploitation of pebbles during the Late Middle Paleolithic. By shedding light on Neanderthal lifeways, technological adaptations, and settlement patterns in Eastern Germany, this research contributes to a nuanced understanding of their behavior amidst evolving environmental conditions.</div></div>","PeriodicalId":34142,"journal":{"name":"Quaternary Science Advances","volume":"17 ","pages":"Article 100260"},"PeriodicalIF":2.9,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143173631","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation of rock slope stability using field, laboratory, and numerical methods: A case study of critical road sections from Morka- Chencha, in Southern Ethiopia

IF 2.9

Quaternary Science Advances Pub Date : 2025-01-01 DOI: 10.1016/j.qsa.2025.100273

Hayat Abdela , Bayisa Regassa , Tola Garo , Addisu Bekele

{"title":"Evaluation of rock slope stability using field, laboratory, and numerical methods: A case study of critical road sections from Morka- Chencha, in Southern Ethiopia","authors":"Hayat Abdela , Bayisa Regassa , Tola Garo , Addisu Bekele","doi":"10.1016/j.qsa.2025.100273","DOIUrl":"10.1016/j.qsa.2025.100273","url":null,"abstract":"<div><div>Slope failure is one of the most common geo-environmental natural hazards on steep and mountainous terrain the worldwide resulting in human loss and damage to civil engineering infrastructure. In Southern Ethiopia the road connecting Morka Gircha, and Chencha passes through steep hillside mountains and deep valleys. As a part of this study, slope stability along selected road sections was determined and evaluated, and remedial solutions were provided on the basis of field investigations and numerical analysis. For this study, field research included discontinuity surveys, in situ rock testing, rock sampling for laboratory analysis, slope geometry, and orientation measurements. Field observations revealed that four crucial rock slope sections were selected for stability analysis assessment. Kinematic assessments via Dips software at slope sections RS2 and RS4 revealed the planar kinds of rock slope failure. Further stability analysis via the RocPlane program revealed that the crucial rock slope sections at RS2 are unstable under all anticipated conditions. However, the rock critical slope segment at RS4 remains stable under static dry, dynamic dry, and static saturated conditions and unstable under dynamic saturated conditions. Furthermore, a stability study was conducted via limit equilibrium and finite element methods for static dry, static saturated, dynamic dry, and dynamic saturated loading scenarios at crucial rock slope sections RS1 and RS5. This study's performance analysis of geometric profiles indicates that variations of slope height and slope angle lead to greater slope stability. This shows that the factor of safety values in both the LEM and FEM change as the slope angle and slope height decrease. Furthermore, the study reveals that the insertion of rock bolts at planar failure sites increases the FOS slope.</div></div>","PeriodicalId":34142,"journal":{"name":"Quaternary Science Advances","volume":"17 ","pages":"Article 100273"},"PeriodicalIF":2.9,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143444421","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of heat treatment on geotechnical and microstructural properties of expansive soils

IF 2.9

Quaternary Science Advances Pub Date : 2025-01-01 DOI: 10.1016/j.qsa.2024.100262

Mebrate Tamiru, Eleyas Assefa, S.M. Assefa, Nagessa Zerihun Jilo

{"title":"Effect of heat treatment on geotechnical and microstructural properties of expansive soils","authors":"Mebrate Tamiru, Eleyas Assefa, S.M. Assefa, Nagessa Zerihun Jilo","doi":"10.1016/j.qsa.2024.100262","DOIUrl":"10.1016/j.qsa.2024.100262","url":null,"abstract":"<div><div>This paper explores the effects of heating on the geotechnical and microstructural properties of natural expansive soil found in Sendafa, Ethiopia. Expansive soils, known for their volume changes with moisture variation, pose significant challenges. Traditional methods for improving these soils include using lime, cement, and agricultural wastes. However, this study focuses on heat treatment as an alternative approach to enhance the soil geotechnical behavior. Classified as A7-6 and CH according to the AASHTO and USCS classifications, the soil samples underwent heating in a micro-oven at temperatures of 200 °C, 400 °C, 600 °C, and 800 °C for 1 h. Notably, the soil index properties showed improvement starting at 400 °C. With increased temperatures, dry density rose while optimum moisture content decreased. Furthermore, unconfined compressive strength and swelling pressure dropped as the heating temperature escalated, and the clay minerals composition was reduced due to calcination and dehydration processes. SEM analysis revealed a transformed microstructure, with the soil appearing cinder (scoria)-like, exhibiting a more flocculated, aggregated, and well-integrated layered structure. This study underscores the potential of heat treatment for stabilizing expansive soils, recommending a minimum temperature of 400 °C for effective results.</div></div>","PeriodicalId":34142,"journal":{"name":"Quaternary Science Advances","volume":"17 ","pages":"Article 100262"},"PeriodicalIF":2.9,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143175258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0