Quaternary International最新文献

{"title":"Were the late pleistocene giant sloths from brazilian intertropical region adapted to an aquatic lifestyle? A bone compactness analysis","authors":"Mário André Trindade Dantas ,&nbsp;Thays Oliveira","doi":"10.1016/j.quaint.2025.110079","DOIUrl":"10.1016/j.quaint.2025.110079","url":null,"abstract":"<div><div>This study aimed to evaluate the compactness of the ribs and humeri of extinct giant sloth species from the Brazilian Intertropical Region (BIR; Megatheriidae - <em>Nothrotherium maquinense</em> and <em>Eremotherium laurillardi</em>; Megalonychidae - <em>Ahytherium aureum</em> and <em>Australonyx aquae</em>; Scelidotheriidae - <em>Valgipes bucklandi</em> and <em>Catonyx cuvieri</em>; Mylodontidae - <em>Glossotherium phoenesis</em>, <em>Ocnotherium giganteum</em>, and <em>Mylodonopsis ibseni</em>) to assess potential adaptations to an aquatic lifestyle. Bone compactness observed in the ribs (0.453 ± 0.164) and humeri (0.390 ± 0.106) was similar across all studied taxa (<em>t</em> = 0.78, <em>p</em> = 0.44). Members of the Megatheriidae family exhibited the highest values (rib = 0.637 ± 0.103; humeri 0.437 ± 0.107), followed by members of the Scelidotheriidae (ribs = 0.383 ± 0.054; humerus = 0.369), Mylodontidae (ribs = 0.383 ± 0.054; humerus = 0.369), and Megalonychidae (ribs = 0.325 ± 0.080) families. The bone compactness observed in the ribs and humeri of the extinct giant sloths of the Late Pleistocene of the BIR was below the values observed in terrestrial mammals and <em>Thalassocnus</em> spp. (&gt;0.850), the unique giant sloth <em>taxa</em> adapted to aquatic lifestyles, suggesting that none of the BIR taxa were adapted to an aquatic lifestyle.</div></div>","PeriodicalId":49644,"journal":{"name":"Quaternary International","volume":"753 ","pages":"Article 110079"},"PeriodicalIF":1.8,"publicationDate":"2026-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145618472","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}

{"title":"Fossil records of Bovidae and Cervidae from the Late Pliocene and Early Pleistocene of Slovenia: Implications for Eurasian correlations and evolution of ungulate fauna communities","authors":"Urszula Ratajczak-Skrzatek ,&nbsp;Slavko Polak ,&nbsp;Karol Karbowski ,&nbsp;Marjan Temovski ,&nbsp;Paweł Mackiewicz ,&nbsp;Andrea Savorelli ,&nbsp;Krzysztof Stefaniak","doi":"10.1016/j.quaint.2025.110060","DOIUrl":"10.1016/j.quaint.2025.110060","url":null,"abstract":"<div><div>The article presents new discoveries of fossil remains of herbivorous mammals from the Plio–Pleistocene transition, including representatives of the genera <em>Megalovis</em> and <em>Metacervocerus</em>, found in the Črnotiče Quarry in Slovenia, in layers dated to the Early Pleistocene. The identified remains of <em>Megalovis latifrons</em> and <em>Metacervocerus rhenanus</em> provide significant evidence of the presence of these species in the southern part of Central Europe during the Early Pleistocene. These remains represent the first described examples of these taxa from Slovenia and provide valuable material for studies on the biogeography and evolution of fauna during the Early Pleistocene. This discovery offers crucial insights into the dispersal of fauna from Asia to Europe and suggests that the southern region of Slovenia may served as a migration corridor for these taxa. The conducted morphometric analysis of the teeth and postcranial bones allowed for a comparison of dimensions in the context of geographical and ecological changes, highlighting morphological variability within these taxa and potential adaptations to changing environmental conditions. In particular, the differences in the dimensions of the teeth and skeletal bones may indicate regional variations in size and morphology of the <em>Megalovis</em> and <em>Metacervocerus</em> representatives, which could result from ecological diversity in Early Pleistocene Europe. Phylogenetic analyses of <em>Megalovis</em> remains suggested at least two migration waves from Central Asia to Europe and shed new insight into the taxonomic affiliation of available samples.</div></div>","PeriodicalId":49644,"journal":{"name":"Quaternary International","volume":"753 ","pages":"Article 110060"},"PeriodicalIF":1.8,"publicationDate":"2026-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145600395","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}

{"title":"Glacial changes in the eastern Kunlun Mountains since the Little Ice Age","authors":"Sai Lin ,&nbsp;Jinhua Liu ,&nbsp;Yingkui Li ,&nbsp;Haiping Hu ,&nbsp;Changsheng Ye ,&nbsp;Qiang Liu ,&nbsp;Shunzi Pi","doi":"10.1016/j.quaint.2025.110053","DOIUrl":"10.1016/j.quaint.2025.110053","url":null,"abstract":"<div><div>As one of the most important glaciated areas on the Tibetan Plateau (TP), the Kunlun Mountains (KM) are of great significance in maintaining the ecological balance and sustainable socio-economic development of the arid regions in Central Asia. We reconstructed the glacier extent, ice thickness, and equilibrium-line altitude (ELA) in the eastern section of the Kunlun Mountains (EKM) since the Little Ice Age (LIA) using high-resolution satellite imagery in Google Earth and the PalaeoIce model. The mapped LIA outlines were validated with field observations. We then analyzed the changes in glacier area, ice thickness, volume, and ELA since the LIA. The results showed that, since the LIA, the glacier area in EKM has decreased by about 15 %, the ice volume has lost about 25.2 %, and the ELA has risen by 28 m. The glacier change was spatially heterogeneous in the EKM, in which the retreat of glacier area and volume in the eastern region was greater than those in the central and western regions. Glacier changes in the western region also showed a north-south heterogeneity, with smaller changes in the southwestern part and greater changes in the northwestern part. These changes were closely related to the characteristics of regional glaciers. The glaciers of EKM had relatively smaller changes in response to temperature rise compared with other glaciers on the TP.</div></div>","PeriodicalId":49644,"journal":{"name":"Quaternary International","volume":"753 ","pages":"Article 110053"},"PeriodicalIF":1.8,"publicationDate":"2026-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145618471","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}

{"title":"Early human settlement in the inter-Andean Magdalena valley, Colombia: New technological and chronological insights from the Nare site","authors":"Brunella Muttillo ,&nbsp;Giuseppe Lembo ,&nbsp;Sahra Talamo ,&nbsp;Laura Tassoni ,&nbsp;Simona Arrighi ,&nbsp;Clarissa Dominici ,&nbsp;Chiaramaria Stani ,&nbsp;Martha Cecilia Cano ,&nbsp;Carlos López","doi":"10.1016/j.quaint.2025.110051","DOIUrl":"10.1016/j.quaint.2025.110051","url":null,"abstract":"<div><div>The Magdalena valley, Colombia's principal fluvial corridor, has long been recognized as a key route for early human dispersal in northern South America. This inter-Andean region served as a strategic passage between the Andean highlands and the tropical lowlands, offering a resource-rich environment that supported human mobility and settlement since the Pleistocene-Holocene transition.</div><div>In the Middle Magdalena valley, some of Colombia's oldest preceramic open-air sites have been identified. However, despite their importance, the technological characteristics of their lithic assemblages—the only direct evidence of early human activity—remain poorly understood.</div><div>This study presents the first systematic techno-economic analysis of the preceramic stratigraphic unit at the Nare site, integrating use-wear and residue analyses. Moreover, new radiocarbon dates refine the site's chronological framework, placing its main occupation in the Early Holocene.</div><div>The lithic assemblage shows a strong reliance on local raw materials (primarily quartz and chert), a predominance of unretouched flakes, some retouch flakes, and a single unifacial tool. A bladelet core suggests an interest in producing elongated, relatively standardized flakes, though the absence of bladelets raises questions about off-site transport or differential site use.</div><div>These results refine our understanding of lithic technology in the region and offer a new perspective on the Middle Magdalena's early industries, highlighting a more diverse and flexible technological repertoire. The Nare assemblage demonstrates a wide range of knapping methods, percussion techniques, and raw material management strategies.</div><div>This study enhances our understanding of early human adaptation in the region and contributes to broader discussions on lithic technologies and settlement dynamics in northern South America.</div></div>","PeriodicalId":49644,"journal":{"name":"Quaternary International","volume":"752 ","pages":"Article 110051"},"PeriodicalIF":1.8,"publicationDate":"2026-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145618645","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}

{"title":"Bayhead delta-dominated transgressive succession in the Quaternary Ishikari incised valley, Hokkaido, Japan","authors":"Gentaro Kawakami ,&nbsp;Katsumi Kimura ,&nbsp;Tsumoru Sagayama","doi":"10.1016/j.quaint.2025.110048","DOIUrl":"10.1016/j.quaint.2025.110048","url":null,"abstract":"<div><div>Thick bayhead delta successions were rarely formed in incised valleys during the rapid postglacial transgressions, as accommodation creation generally outpaced sediment supply. Under such conditions, bayhead shorelines tended to develop rather than thick deltaic deposits. However, an unusually thick (∼30 m) bayhead delta-dominated transgressive succession was identified in the Ishikari incised valley, Hokkaido, Japan, through a reanalysis of three sediment cores. Sequence stratigraphic analysis, integrated with engineering boreholes, identified four backstepping parasequences (PS-1 to PS-4, in ascending stratigraphic order) in the succession, each bounded by a flooding surface (FS-1 to FS-4). While FS-1, FS-3, and FS-4 correspond to global or regional sea-level rise events, FS-2 likely reflects a localized increase in accommodation governed by terrace-fringed valley morphology. Each parasequence comprises stacked mouth bars that likely developed during periods of increasing salinity, as indicated by diatom assemblages and bioturbation intensity. This suggests that bayhead delta aggradation occurred in response to progressive basin deepening. Despite episodic landward retreat of the transgressive system at each flooding surface, bayhead delta deposition persisted throughout the transgression. This persistence reflected a sustained balance between sediment supply and accommodation creation, likely maintained by sediment input from multiple tributaries. Moreover, sediment retention, enhanced by the constricted valley geometry and the early formation of coastal barriers at the valley mouth, probably promoted efficient sediment trapping. The Ishikari case, together with other examples from tectonically active settings, demonstrates that even under relatively rapid sea-level rise, small-to medium-sized incised valleys with nearby sediment sources can sustain thick deltaic accumulation.</div></div>","PeriodicalId":49644,"journal":{"name":"Quaternary International","volume":"752 ","pages":"Article 110048"},"PeriodicalIF":1.8,"publicationDate":"2026-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145736999","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}

{"title":"Late Quaternary birds from Lajedo de Soledade, Rio Grande do Norte, Brazil","authors":"João Paulo da Costa ,&nbsp;Marcos Cenizo ,&nbsp;Mário André Trindade Dantas ,&nbsp;Fabiana Monteiro de Oliveira ,&nbsp;Kita Chaves Damasio Macario ,&nbsp;Guilherme Renzo Rocha Brito ,&nbsp;Kleberson de Oliveira Porpino ,&nbsp;Hermínio Ismael de Araújo-Júnior","doi":"10.1016/j.quaint.2025.110054","DOIUrl":"10.1016/j.quaint.2025.110054","url":null,"abstract":"<div><div>The Lajedo de Soledade (NE Brazil) is an extensive carbonate platform intersected by a series of ravines, sculpted by karstification processes. This region stands out for its paleontological relevance due to the diversity of fossil vertebrates found in the Late Quaternary deposits filling several of its ravines. New collections at Ravina das Araras, together with a reanalysis of near-coeval fossil assemblages previously found at Ravina do Leon, revealed the presence of at least nine different avian taxa, including vultures (<em>Pleistovultur nevesi</em>, <em>Cathartes</em> sp.), hawks (Buteoninae indet.), doves and pigeons (<em>Zenaida auriculata</em> and <em>Patagioenas</em> sp.), parakeets (cf. <em>Aratinga</em> sp.), tinamous (<em>Rhynchotus rufescens</em> and <em>Crypturellus</em> sp.), and ducks (<em>Cairina moschata</em>). With the exception of the extinct condor <em>P. nevesi</em>, current representatives of the identified taxa inhabit dry tropical grasslands, savannas and riparian forests of the Caatinga biome, including the Lajedo de Soledade region. For the first time, direct radiocarbon dating and isotopic analysis of the diet of a <em>P. nevesi</em> individual (Ravina do Leon specimen) were obtained, indicating that this bird (estimated body mass = 11.2 kg) fed on carcasses of animals that predominantly inhabited open areas during the Late Pleistocene (i.e., 34,772–36,986 cal yr BP). The Lajedo de Soledade ravines contain Late Pleistocene deposits with a diverse range of vertebrates, including mammals, reptiles, anurans, and notably, birds, which is unusual in other regional Quaternary deposits.</div></div>","PeriodicalId":49644,"journal":{"name":"Quaternary International","volume":"752 ","pages":"Article 110054"},"PeriodicalIF":1.8,"publicationDate":"2026-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145618646","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}

{"title":"Microtexture and provenance signatures for oscillations of the late Pleistocene Scandinavian Ice Sheet in Rautuvaara, north-western Finland","authors":"Ninna Immonen ,&nbsp;Kari Strand ,&nbsp;Pertti Sarala ,&nbsp;Juha Pekka Lunkka","doi":"10.1016/j.quaint.2025.110055","DOIUrl":"10.1016/j.quaint.2025.110055","url":null,"abstract":"<div><div>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.</div><div>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.</div></div>","PeriodicalId":49644,"journal":{"name":"Quaternary International","volume":"752 ","pages":"Article 110055"},"PeriodicalIF":1.8,"publicationDate":"2026-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145537287","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}

{"title":"New insights into the formation of postglacial fracture valleys in Denmark using LiDAR, and towed Transient Electromagnetic Methods","authors":"Nicolaj K. Larsen ,&nbsp;Kristian B.K. Romvig ,&nbsp;Lis Allaart ,&nbsp;Christos Boufidis ,&nbsp;Thue S. Bording","doi":"10.1016/j.quaint.2025.110052","DOIUrl":"10.1016/j.quaint.2025.110052","url":null,"abstract":"<div><div>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.</div></div>","PeriodicalId":49644,"journal":{"name":"Quaternary International","volume":"752 ","pages":"Article 110052"},"PeriodicalIF":1.8,"publicationDate":"2026-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145571024","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}

{"title":"The Early Acheulean on the Ethiopian highlands: The case of Gombore IB at Melka Kunture (Upper Awash, Ethiopia)","authors":"Eduardo Méndez-Quintas ,&nbsp;Margherita Mussi","doi":"10.1016/j.quaint.2025.110050","DOIUrl":"10.1016/j.quaint.2025.110050","url":null,"abstract":"","PeriodicalId":49644,"journal":{"name":"Quaternary International","volume":"752 ","pages":"Article 110050"},"PeriodicalIF":1.8,"publicationDate":"2026-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145537230","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}

{"title":"Vegetation pattern and succession from LGM to early Holocene in the eastern coastal zone of China","authors":"Guangyi Bai ,&nbsp;Keliang Zhao ,&nbsp;Jian Wang ,&nbsp;Lili Lu ,&nbsp;Xiaoqiang Li","doi":"10.1016/j.quaint.2025.110057","DOIUrl":"10.1016/j.quaint.2025.110057","url":null,"abstract":"<div><div>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.</div><div>Our results show that during the LGM, the exposed Bohai and Yellow Sea shelf were primarily covered by steppe and meadow dominated by <em>Artemisia</em> 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.</div></div>","PeriodicalId":49644,"journal":{"name":"Quaternary International","volume":"752 ","pages":"Article 110057"},"PeriodicalIF":1.8,"publicationDate":"2026-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145618644","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}