Journal of Palaeogeography最新文献

{"title":"Dolomitization history and porosity evolution of the deeply buried Cambrian Xixiangchi Formation, Sichuan Basin, SW China","authors":"Zhuang-Zhuang Bai ,&nbsp;Shu-Yuan Shi ,&nbsp;Yong-Jie Hu ,&nbsp;Wei Yang ,&nbsp;Wu-Ren Xie ,&nbsp;Wen-Zheng Li","doi":"10.1016/j.jop.2025.100258","DOIUrl":"10.1016/j.jop.2025.100258","url":null,"abstract":"<div><div>The deeply buried (&gt;4500 m) Cambrian Xixiangchi Formation in the Sichuan Basin, southwestern China, hosts significant reserves of natural gas. A comprehensive analysis combining petrographic, paleo-thermometric, geochemical, and petrophysical materials of the dolostone from the Xixiangchi Formation was conducted to provide insight into deeply buried carbonate reservoirs and decipher the complex diagenetic history. Dolomite-mudstone, fine-crystalline dolostone, and fine-crystalline dolomite cement of the Xixiangchi Formation underwent sabkha and reflux dolomitization. Medium- to coarse-crystalline dolostone, dolo-grainstone, and medium- to coarse-crystalline dolomite cements were then formed by burial dolomitization. These dolomites display δ¹³C ratios and REE patterns comparable to seawater, with progressively depleted δ¹⁸O ratios at greater burial depths. Dolo-grainstone originating from the platform shoal facies exhibits higher primary porosities and well-developed inter-particle pores compared to dolo-mudstone and crystalline dolostone lithologies, which are typically associated with the low-energy tidal flat and/or restricted platform environments. The initial spatial heterogeneity of primary porosity was subsequently modified by meteoric alteration and repeated episodes of dolomitization, which contributed to the development of secondary porosity. These processes increased the resistivity to compaction, and open fractures increased reservoir permeability. During the deep burial regime, saddle dolomite and calcite cements were precipitated at high fluid temperatures (up to 220 °C). Thermochemical sulfate reduction is characterized by the occurrence of anhydrite, hydrocarbon, and high homogenization temperatures and significantly low δ¹³C ratios (av.=−23.7‰) of calcite cements. Deep burial dissolution is significantly constrained by: corrosion of late diagenetic minerals, and the occurrence of bitumen in the center of pores. Mechanisms for the deep-burial dissolution include hydrothermal alteration and thermochemical sulfate reduction. This study indicates the complex diagenetic evolution of Cambrian Xixiangchi Formation, providing significant insights into global deep-burial carbonate reservoir potential.</div></div>","PeriodicalId":100819,"journal":{"name":"Journal of Palaeogeography","volume":"14 3","pages":"Article 100258"},"PeriodicalIF":2.0,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144721250","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microbially induced sedimentary structures (MISS) from Paleoproterozoic siliciclastic successions and their bearing on shallow marine sedimentation: Bayana Basin, North Delhi Fold Belt, India","authors":"Rahul Bailwal,&nbsp;Partha Pratim Chakraborty","doi":"10.1016/j.jop.2025.04.001","DOIUrl":"10.1016/j.jop.2025.04.001","url":null,"abstract":"<div><div>An attempt has been made to document Microbially Induced Sedimentary Structure (MISS) from siliciclastic strata of the Nithar and Badalgarh Formations, Paleoproterozoic Raialo and Alwar groups of rocks in the Bayana Basin of NW India. Whereas in the Badalgarh Formation MISS are documented from shallow marine foreshore-upper shoreface succession, in the Nithar Formation, the features are recorded from fluvial deposits where the river system attained local stagnation. Unlike the dominant description of Precambrian shallow-marine MISS from sub-tidal settings, the present description highlights MISS from foreshore-upper shoreface deposits of the Badalgarh coastline. MISS are documented from field study (bedding surface) and are further proved by microscope study of thin sections. The bedding surface features include wrinkle marks, palimpsest ripple, patchy ripple, gas dome structure, desiccation cracks, and erosional remains, whereas under microscope, wavy crinkly microbial laminae with frayed edges, trapping of fine detritus in microbial filaments, flying paper effect and disseminations/clots of pyrite, in association, are documented. The biogenicity of the crinkly laminae is further checked by Raman Spectroscopy. The documented microbial structures are grouped under three categories, namely mat growth and stabilization, mat destruction, and mat burial. The Badalgarh coastline records shallowing-upward normal regressive depositional trend. In conjunction with earlier descriptions of MISS from Paleoproterzoic and Neoproterozoic successions of central and western India, the present study from northwest India establishes an overwhelming microbial influence on Precambrian siliciclastic sedimentation in Indian basins.</div></div>","PeriodicalId":100819,"journal":{"name":"Journal of Palaeogeography","volume":"14 3","pages":"Article 100253"},"PeriodicalIF":2.0,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144721246","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Lower Miocene Askazansor Formation in Central Kazakhstan: Paleontological characteristics, biostratigraphy and paleogeographical conditions","authors":"Saida Nigmatova,&nbsp;Bolat Bayshashov,&nbsp;Ilnura Madiyarova,&nbsp;Arman Seidali,&nbsp;Balzhan Kalibek","doi":"10.1016/j.jop.2024.09.005","DOIUrl":"10.1016/j.jop.2024.09.005","url":null,"abstract":"<div><div>This manuscript provides valuable insight into the geological evolution of Central Kazakhstan during the Cenozoic and serves as a key tool for understanding the paleogeographic evolution of the surrounding regions. Based on the literature and the results of our own research, data on the Oligocene-Early Miocene fauna of the Askazansor site, located in the southern part of Central Kazakhstan, were analyzed and summarized. The stratigraphy was examined, the history of the research was studied, and an attempt was made to synchronize the paleofauna with other localities in Kazakhstan and Eurasia. The article presents descriptions of bone remains of previously unknown equids from here. The age of the deposits is considered to be the Early Miocene. Based on the study of mammals and the lithofacial analysis of sediments, conclusions were drawn about the paleoecological situation of this time.</div></div>","PeriodicalId":100819,"journal":{"name":"Journal of Palaeogeography","volume":"14 3","pages":"Article 100244"},"PeriodicalIF":2.0,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144720960","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microbially-dominated Cambrian (Miaolingian) carbonate reef of the North China","authors":"Ming-Xiang Mei ,&nbsp;Muhammad Riaz ,&nbsp;Ardiansyah Koeshidayatullah ,&nbsp;Zi-Liang Liu","doi":"10.1016/j.jop.2025.03.003","DOIUrl":"10.1016/j.jop.2025.03.003","url":null,"abstract":"<div><div>The Miaolingian Series is a distinctive lithostratigraphic unit within the Cambrian System, characterized by the abundance of non-laminated dendrolites relative to stromatolites. During the Miaolingian Epoch, the North China Platform was marked by a pervasive development of ooid banks (more than one million km²) along with large and small bioherms associated mainly with sea-level fall. The North China Platform, exemplified by the Huolianzhai section, serves as a paradigm for deciphering the microbial composition and the sedimentary architecture of microbial carbonates that developed in the normal regression phase of third-order sea level changes. Carbonate reefs (biohermal-type structures) in this section comprise a high density of calcified sheaths of filamentous cyanobacteria together with <em>Epiphyton</em>. The microbial carbonate may result from sophisticated calcification of extracellular polymeric substances (EPS) that form multiple biofilms in relatively thick microbial mats dominated by cyanobacteria. The presence of the dolomitic crystals within dense micrite of microbial carbonates, such as thrombolite, leiolite, stromatolite along with potential fossilized cyanobacterial spores embedded within clotted micrite of the thrombolitic leiolites, has sparked both interest and intrigue. These findings underscore the complex and enigmatic origins of microbial carbonates which are interpreted to have been predominantly influenced by cyanobacterial activity. This study provides valuable insights into the formation of microbial carbonates, with implications for similar geological settings worldwide.</div></div>","PeriodicalId":100819,"journal":{"name":"Journal of Palaeogeography","volume":"14 3","pages":"Article 100248"},"PeriodicalIF":2.0,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144720961","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enigmatic large-toothed Campanian polycotylid plesiosaurs with specific dietary preferences and potentially wide distribution","authors":"Nikolay G. Zverkov ,&nbsp;Igor A. Meleshin","doi":"10.1016/j.jop.2024.11.007","DOIUrl":"10.1016/j.jop.2024.11.007","url":null,"abstract":"<div><div>Most polycotylid plesiosaurians have isodont dentition with relatively small and slender conical teeth. However, large and robust caniniform teeth are known for some of their basal late Albian and early Cenomanian representatives, implying greater ecological diversity early in the evolutionary history of the clade. Here we report the first evidence of polycotylids with large teeth in the Campanian, thus c. 15 Myr younger than previous records. Several teeth with crowns exceeding 40 mm in height and some reaching 25 mm in basal diameter were collected from two Campanian localities in European Russia. These are the largest polycotylid teeth reported from the Cretaceous of Eurasia. Their large size and specific enamel ornamentation markedly differ from other known polycotylid teeth, suggesting that these teeth belong to an undescribed taxon. However, similar enamel ornamentation was previously reported for the now forgotten ‘<em>Piratosaurus plicatus</em>’ Leidy, 1865 from the Upper Cretaceous of Canada, which may indicate the wide distribution of polycotylids with such teeth in the latest Cretaceous. Unlike classical polycotylids, the new teeth have strong apical wear which implies consumption of abrasive prey, similar to modern killer whales that feed on sharks. Thus, our finding reveals higher ecological diversity of polycotylids in the latest Cretaceous, suggesting the coexistence of small-to medium-toothed and large-toothed (probably ‘latirostrine’) taxa at different times of the evolutionary history of the Polycotylidae.</div></div>","PeriodicalId":100819,"journal":{"name":"Journal of Palaeogeography","volume":"14 3","pages":"Article 100254"},"PeriodicalIF":2.0,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144721247","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Lacustrine delta-offshore bar system: depositional characteristics and formative mechanism","authors":"Chang-Ni Liu ,&nbsp;Sheng-He Wu ,&nbsp;Zhen-Hua Xu ,&nbsp;Qi Ren ,&nbsp;Da-Li Yue ,&nbsp;De-Gang Wu ,&nbsp;Yi-De Sun ,&nbsp;Wen-Fu Cui ,&nbsp;Ke-Li Li","doi":"10.1016/j.jop.2025.100267","DOIUrl":"10.1016/j.jop.2025.100267","url":null,"abstract":"<div><div>The lacustrine delta-offshore bar system serves as a critical hydrocarbon reservoir, in which sedimentary processes and depositional characteristics reflect a complex interplay of hydrodynamic, sedimentological, and geomorphic dynamics. Notably, such systems with their full suite of morphological attributes have not been numerically simulated prior to this study. Our Delft3D simulation has successfully reproduced the delta-offshore bar system for the first time, providing a tool to quantitatively analyze its depositional processes and stratigraphic signatures. Three new perspectives are proposed: 1) Three distinct hydrodynamic reaches of the system are recognized by hourly-averaged seaward flow velocity and hourly-averaged water level: fluvial-dominated reaches (positive seaward flow velocity and water level); interaction reaches (both nearly zero); and wave-dominated reaches (negative seaward flow velocity despite sustained positive water level). Deltaic front and offshore bars develop simultaneously in fluvial-dominated and wave-dominated reaches, respectively, which are separated by an interaction reach. They exhibit distinct morphological and depositional characteristics resulted by different depositional processes. 2) Partially submerged offshore bars form near the breaker zone in the wave-dominated reaches, originating from thin and submergent longshore shoreface. Initially, two offshore bars form on both sides of the longshore shoreface through vertical accretion, then they experience elongation and merge into a large-scale bar through lateral accretion, and finally continue to widen through landward accretion. 3) Deltas are confined to the fluvial-dominated reaches, extending to a certain length with a low length-to-width ratio and a smooth shoreline, featuring rare sinuous distributary channels before the formation of the large-scale offshore bar. Once the large-scale offshore bar forms, deltas continue to prograde basinward. The results of this study have been applied to reservoir characterization, improving the identification of single sand-bodies and internal accretions in Member 2 of the Paleogene Shahejie Formation, Shengtuo Oilfield, Bohai Bay Basin, China.</div></div>","PeriodicalId":100819,"journal":{"name":"Journal of Palaeogeography","volume":"14 4","pages":"Article 100267"},"PeriodicalIF":0.0,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144670508","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Rhodoliths and trace fossils record stabilization of a fan-delta system: An example from the Mio-Pliocene deposits of Gran Canaria (Canary Islands, Spain)","authors":"Ana Cristina Rebelo ,&nbsp;Alfred Uchman ,&nbsp;Markes E. Johnson ,&nbsp;Carlos S. Melo ,&nbsp;Juana Vegas ,&nbsp;Inés Galindo ,&nbsp;Eduardo J. Mayoral ,&nbsp;Ana Santos ,&nbsp;Alberto González-Rodríguez ,&nbsp;Julio Afonso-Carrillo ,&nbsp;Sérgio P. Ávila ,&nbsp;Esther Martín-González","doi":"10.1016/j.jop.2025.100266","DOIUrl":"10.1016/j.jop.2025.100266","url":null,"abstract":"<div><div>Fan-delta systems are geomorphological structures and sedimentary records seldom preserved on oceanic volcanic islands. The generally coarse-grained deposits belonging to the Las Palmas Detritic Formation (Mio-Pliocene) at the Las Rehoyas section, NE part of Gran Canaria Island (Canary Islands, Spain), contain abundant but relatively small rhodoliths, non-nucleated, in partly bioturbated (<em>Skolithos</em> ichnofacies) sand-dominated strata. This section consists of four sedimentary units deposited in a fan-delta system that developed on a marine platform in the northeastern part of the island. The system was flooded during the late Miocene to early Pliocene, a non-eruptive phase on Gran Canaria Island. Stabilization of the fan delta due to a relative rise in sea level enabled colonization by burrowing organisms and the development of rhodoliths, which were redeposited by storms from the lower shoreface–offshore to the foreshore–middle shoreface environment.</div></div>","PeriodicalId":100819,"journal":{"name":"Journal of Palaeogeography","volume":"14 4","pages":"Article 100266"},"PeriodicalIF":0.0,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144702253","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Insights into the biostratigraphy of the Silurian–Devonian transition in Southwestern Gondwana, based on a new graptolite record from Argentina","authors":"Fernando E. Lopez ,&nbsp;Juan J. Rustán ,&nbsp;Juan L. Benedetto","doi":"10.1016/j.jop.2025.100265","DOIUrl":"10.1016/j.jop.2025.100265","url":null,"abstract":"<div><div>The Silurian–Devonian transition witnessed not a single mass faunal turnover but minor extinctions and recovery intervals. Planktonic graptolites experienced a reduction in diversity before their extinction in the Early Devonian. Due to the scarce fossil record from high-latitude cold waters, these interpretations have been primarily based upon the best known low-latitude faunas. The graptolite herein presented is the first record of latest Silurian to possibly Devonian age from high southern paleolatitudes of Gondwana. A new fossil locality of the Argentine Precordillera yielded <em>Slovinograptus</em>? <em>microdon curvatus</em>, previously found only in the Canadian Arctic. This is the youngest Silurian graptolite record in south-western Gondwana, constituting a useful global biostratigraphic marker. The fossil-bearing strata can, at least partially, be correlated with the latest Silurian <em>Uncinatograptus birchensis</em> Zone, and can be referred to the latest Pridolian in accordance with evidence from the co-occurring brachiopod assemblage, as well as from conodont data from equivalent stratigraphic sections. Furthermore, the brachiopod faunal turnover recorded in the studied stratigraphic section potentially correlates with the Transgrediens Extinction Event, a biotic crisis not older than latest Pridolian. Evidence suggests that the brachiopod (and probably the trilobite) turnover and the concomitant biogeographic reconfiguration of provincialism of Gondwanan benthic faunas around the Silurian–Devonian boundary might be related to the aftermath of the Transgrediens Event.</div></div>","PeriodicalId":100819,"journal":{"name":"Journal of Palaeogeography","volume":"14 4","pages":"Article 100265"},"PeriodicalIF":0.0,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144694950","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The first record of the pachycormid fish Bonnerichthys in Eurasia marks a global distribution of Late Cretaceous suspension-feeding giants","authors":"Alina Kanarkina ,&nbsp;Nikolay G. Zverkov ,&nbsp;Evgeny V. Popov","doi":"10.1016/j.jop.2025.100255","DOIUrl":"10.1016/j.jop.2025.100255","url":null,"abstract":"<div><div>The giant Late Cretaceous suspension-feeding pachycormid <em>Bonnerichthys</em> has puzzled researchers since it was named, as its geographic distribution is confined to the USA, which contrasts with other widespread Jurassic and Cretaceous pachycormid genera. Here we describe fin fragments of <em>Bonnerichthys</em> from the Campanian of European Russia. The fins have a characteristic structure of the anterior edge, which is strongly thickened with its leading edge forming a sharp but irregularly excavated keel; internally the fins have a specific ossification with wedge-shaped structure between the rays. These features are autapomorphic of <em>Bonnerichthys</em> and thus allow for positive assignment of the Russian specimens to this genus. This is the first direct evidence of the presence of <em>Bonnerichthys</em> outside the USA, which solves the mystery of its seemingly restricted distribution and highlights that all large suspension-feeding pachycormids were cosmopolitan during their Jurassic and Cretaceous evolutionary history.</div></div>","PeriodicalId":100819,"journal":{"name":"Journal of Palaeogeography","volume":"14 3","pages":"Article 100255"},"PeriodicalIF":0.0,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144491560","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Glacial and postglacial interpretation of Late Paleozoic sedimentation in a tectonically active mountain front in Paganzo Basin, Argentina","authors":"Carina Colombi ,&nbsp;Pablo J. Alonso-Muruaga ,&nbsp;Allison Raeann Kusick ,&nbsp;John L. Isbell ,&nbsp;Nicholas D. Fedorchuk ,&nbsp;Carlos M. Alarcón ,&nbsp;Carlos O. Limarino","doi":"10.1016/j.jop.2025.100261","DOIUrl":"10.1016/j.jop.2025.100261","url":null,"abstract":"<div><div>The Guandacol Formation corresponds to glacial episode 4 of the “Late Paleozoic Ice Age” in western Gondwana. It represents the final glaciation of westernmost Gondwana and the beginning of deglaciation that swept across the supercontinent throughout the rest of the Paleozoic. A succession of transitional sedimentary facies associations characterizes the eastern outcrops of the Guandacol Formation. These facies associations are interlayered with several deposits of mass-transport complexes (MTC) and present the occasional opportunity to conduct a deep-time analysis of the effect of tectonism in what is interpreted to be glacially-influenced deposits. Six sedimentary facies associations were recognized in the lower part of the Guandacol Formation. Facies association 1 (interbedded diamictites, sandstones, and mudstones) overlies MTC 1 and is interpreted as sedimentation into a marine glacially-influenced outwash fan. Facies association 2 (ponded interbedded sandstones, mudstones, and diamictites) was deposited as subaqueous underflows/turbidites and debris flows covering the irregular paleotopography of MTC 2. Facies association 3 (white medium- to coarse-grained sandstones and conglomerates) represents a small deltaic system. Facies association 4 (rhythmites with dropstones and sandstones) was deposited in a partially ponded water body resulting from the collapse and paleotopography of MTC 3. Facies association 5 (coarsening-upward cycles of mudstones and sandstones) was deposited in prodelta to delta front environments. Finally, facies association 6 (conglomerates, sandstones, and mudstones) corresponds to the subaerial deltaic platform. The evolution of depositional environments suggests three glacially-linked stages: Stage 1 — Initial retreat of the nearby ice masses (facies association 1); Stage 2 — Further retreat of glaciers and the progressive decoupling between ice masses and sea (facies associations 2 and 3); and Stage 3 — Postglacial sedimentation dominated by deltaic progradation during highstand conditions (facies associations 4 to 6). The importance of the paleogeographic context is emphasized in which the tectonism triggered recurrent events of MTC that continually modified the topography and sedimentary patterns, interrupting and complicating the stratigraphy of the interpreted glacial and postglacial sedimentation.</div></div>","PeriodicalId":100819,"journal":{"name":"Journal of Palaeogeography","volume":"14 3","pages":"Article 100261"},"PeriodicalIF":0.0,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144481056","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}