Cretaceous Research最新文献_第2页

A curious Cretaceous eremochaetid fly (Diptera, Brachycera, Eremochaetidae) with discussion of the evolution of wing venation and competitive mechanisms between related groups

IF 1.9 3区地球科学

Cretaceous Research Pub Date : 2025-01-20 DOI: 10.1016/j.cretres.2025.106085

Qingqing Zhang , Junfeng Zhang , Qi Zhang

引用次数: 0

A new marine vertebrate assemblage from the Upper Cretaceous Dakota Formation in Nebraska, USA, and its paleoecology and taphonomy

IF 1.9 3区地球科学

Cretaceous Research Pub Date : 2025-01-20 DOI: 10.1016/j.cretres.2025.106084

John K. Juranek , Kenshu Shimada

{"title":"A new marine vertebrate assemblage from the Upper Cretaceous Dakota Formation in Nebraska, USA, and its paleoecology and taphonomy","authors":"John K. Juranek , Kenshu Shimada","doi":"10.1016/j.cretres.2025.106084","DOIUrl":"10.1016/j.cretres.2025.106084","url":null,"abstract":"<div><div>The upper part of the Dakota Formation (lower part of middle Cenomanian) is a marine sedimentary rock unit formed at the dawn of the major transgression of the Late Cretaceous Western Interior Seaway of North America. In this study, remains of marine vertebrates from a fossiliferous bed in the stratigraphic horizon in southeastern Nebraska were examined, which resulted in a collection of over 7292 taxonomically identifiable specimens, consisting minimally of 51 distinct vertebrate taxa. They include at least 26 chondrichthyans, 20 osteichthyan fishes, and five tetrapod taxa, many of which mark the first occurrence in the Cretaceous of Nebraska. The vertebrate assemblage is represented primarily by many small piscivorous pelagic fishes (e.g., cf. <em>Stratodus</em>, <em>Enchodus</em>, and <em>Pachyrhizodus</em>) and durophagous benthic fishes (e.g., <em>Rhinobatos</em>, <em>Pseudohypolophus</em>, <em>Ischyrhiza</em>, cf. <em>Hadrodus</em>, cf. <em>Palaeobalistum</em>, and Albulidae indet.) as well as a small squamate (<em>Coniasaurus</em>) and a diving bird (hesperornithiform). It also includes multiple medium–large predatory pelagic fishes (e.g., <em>Haimirchia</em>, <em>Protolamna</em>, <em>Cretodus</em>, <em>Cardabiodon</em>, <em>Cretoxyrhina</em>, <em>Archaeolamna</em>, <em>Cretalamna</em>, and <em>Protosphyraena</em>) as well as plesiosaurs, that are thought to have occupied the highest trophic positions in their ecosystem. This study is significant because it represents the first formal account of the vertebrate assemblage from the Dakota Formation. Although the fossil assemblage may be time-averaged for possibly as much as 50,000 years timespan, it offers a glimpse into the paleoecology of a nearshore, shallow marine environment during the early part of the middle Cenomanian representing the initial phase of a major transgression of the Western Interior Seaway.</div></div>","PeriodicalId":55207,"journal":{"name":"Cretaceous Research","volume":"169 ","pages":"Article 106084"},"PeriodicalIF":1.9,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143348744","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}

引用次数: 0

Coupled U–Pb and Lu–Hf zircon data of the marine Pilmatué Member, Agrio Formation: Implications for sedimentary provenance and source areas across the Early Cretaceous in the Neuquén Basin, Argentina

IF 1.9 3区地球科学

Cretaceous Research Pub Date : 2025-01-15 DOI: 10.1016/j.cretres.2025.106083

Francisco I. Lugo , Marcos A. Comerio , Carlos A. Ballivián Justiniano , Jonatan A. Arnol , Julián D. Rolan , Pablo J. Pazos , Miguel A.S. Basei

{"title":"Coupled U–Pb and Lu–Hf zircon data of the marine Pilmatué Member, Agrio Formation: Implications for sedimentary provenance and source areas across the Early Cretaceous in the Neuquén Basin, Argentina","authors":"Francisco I. Lugo , Marcos A. Comerio , Carlos A. Ballivián Justiniano , Jonatan A. Arnol , Julián D. Rolan , Pablo J. Pazos , Miguel A.S. Basei","doi":"10.1016/j.cretres.2025.106083","DOIUrl":"10.1016/j.cretres.2025.106083","url":null,"abstract":"<div><div>The Lower Cretaceous Neuquén Basin is characterized by an almost complete stratigraphic record with marine and continental successions that have been addressed from the perspective of compositional and provenance analyses. However, determination of source areas through geological time is still a matter of debate. This work focuses in the upper Valanginian–lower Hauterivian Pilmatué Member (Agrio Formation of the Mendoza Group), a marine unit that represents shallow to offshore settings mainly composed of mudstones. In order to study the provenance and source areas, outcrop samples were examined through petrography, X-ray diffraction, and U–Pb/Lu–Hf zircon analyses. Sandstone deposits are scarce in the unit and show high compositional maturity related to fine-grained sediments preserved during transport until their final deposition. In the Pilmatué Member, the clay fraction is dominated by detrital illite and chlorite derived from the erosion of plutonic/metasedimentary basement rocks likely subjected to arid–semi-arid climate in the hinterland. Four main U–Pb age populations were determined: (1) Mesoproterozoic–Neoproterozoic, (2) Cambrian–Ordovician, (3) Permian–Triassic, and (4) Early–Middle Jurassic, which indicate an important denudation of old igneous-metamorphic basement rocks not recorded in the underlying Upper Jurassic and Lower Cretaceous units. A detailed compilation of the limited U–Pb/Lu–Hf zircon data from Upper Jurassic and Lower Cretaceous units reinforce the ideas that hinterland source regions located adjacent to the basin boundaries were the main source of clastic detritus. Since U–Pb ages show little variations across late Valanginian–Albian times, sediment transfer zones seem to have been stable during the closure of the back-arc basin stage.</div></div>","PeriodicalId":55207,"journal":{"name":"Cretaceous Research","volume":"169 ","pages":"Article 106083"},"PeriodicalIF":1.9,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143180220","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}

引用次数: 0

New fish remains from the Araçatuba and Adamantina formations (Upper Cretaceous), Bauru Group, southwestern São Paulo State

IF 1.9 3区地球科学

Cretaceous Research Pub Date : 2025-01-13 DOI: 10.1016/j.cretres.2025.106078

Patrícia Fabiana Rodrigues Costa , Joyce Celerino de Carvalho , William Roberto Nava , Rodrigo Miloni Santucci

{"title":"New fish remains from the Araçatuba and Adamantina formations (Upper Cretaceous), Bauru Group, southwestern São Paulo State","authors":"Patrícia Fabiana Rodrigues Costa , Joyce Celerino de Carvalho , William Roberto Nava , Rodrigo Miloni Santucci","doi":"10.1016/j.cretres.2025.106078","DOIUrl":"10.1016/j.cretres.2025.106078","url":null,"abstract":"<div><div>The paleoichthyofauna of the Bauru Group is generally represented by isolated remains. This fossil record includes actinopterygians such as Lepisosteidae, Amiidae, Osteoglossiformes, Characiformes, Siluriformes, and a few Dipnoi occurrences. However, given the scarcity of more complete specimens, the Bauru Group fish diversity is poorly known when compared to other vertebrate groups of the same unit. We report new fish remains, including scales and skull fragments, from the lacustrine Araçatuba Formation and the fluvial Adamantina Formation from the Presidente Prudente region (cities of Coronel Goulart and Pirapozinho), State of São Paulo. Some skull remains were analyzed by microtomography and the ganoid scales were studied by morphometric, thin sectioning, and SEM analyses. The cycloid scales of the Bauru Group have not yet been sufficiently investigated due to the incompleteness of the material found so far. Therefore, we better characterize new cycloid scale findings with the aid of comparisons with extant taxa, which indicate that some of them can be assigned to Characiformes. We also report a dentary attributed to the genus <em>Atractosteus</em> (Lepisosteidae) based on unique features such as robust conical teeth with well-developed plicidentine, and the absence of a row of smaller lateral teeth. The underdeveloped morphology of the mandibular canal indicates that this is a juvenile specimen. The paleoichthyofauna of both formations are similar, with remains of Characiformes and Siluriformes showing nearly the same morphology. Lepisosteidae remains are also alike, including the presence of the genus <em>Atractosteus</em>. The remains of Lepisosteidae are the most abundant material found in both units, indicating either this was the predominant group of fish in the Bauru Group or that their remains are easily preserved, as ganoid scales are much more resistant to transportation than cycloid scales.</div></div>","PeriodicalId":55207,"journal":{"name":"Cretaceous Research","volume":"169 ","pages":"Article 106078"},"PeriodicalIF":1.9,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143180217","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}

引用次数: 0

Taxonomic reassessment of the genera Blittersdorffia and Diegopteryx (Neuroptera, Myrmeleontidae) from the Lower Cretaceous Crato Formation with the description of three new species

IF 1.9 3区地球科学

Cretaceous Research Pub Date : 2025-01-13 DOI: 10.1016/j.cretres.2025.106081

Gabriel M. Bueno , Renato J.P. Machado , Caleb C. Martins , Guilherme C. Ribeiro

{"title":"Taxonomic reassessment of the genera Blittersdorffia and Diegopteryx (Neuroptera, Myrmeleontidae) from the Lower Cretaceous Crato Formation with the description of three new species","authors":"Gabriel M. Bueno , Renato J.P. Machado , Caleb C. Martins , Guilherme C. Ribeiro","doi":"10.1016/j.cretres.2025.106081","DOIUrl":"10.1016/j.cretres.2025.106081","url":null,"abstract":"<div><div>The Crato Formation in Brazil harbors over half of the world's known fossil diversity of Myrmeleontidae. However, many type specimens of taxa described from this formation were previously inaccessible. With the recent rediscovery of two Brazilian collections and the acquisition of several newly discovered, well-preserved specimens, we have revised two controversial Myrmeleontidae genera: <em>Diegopteryx</em> Martins-Neto & Rodrigues and <em>Blittersdorffia</em> Martins-Neto & Vulcano. In this study, we describe two new species of Diegopteryx and one new species of <em>Blittersdorffia</em>. Additionally, <em>Blittersdorffia pulcherrima</em> has been reassigned to <em>Diegopteryx</em> and <em>D. raptoria</em> is synonymized with <em>B. pulcherrima</em>. We provide updated diagnoses for both genera and an identification key for the species. We also examine the implications of these new findings for understanding the evolutionary relationships of these genera within fossil Myrmeleontidae.</div></div>","PeriodicalId":55207,"journal":{"name":"Cretaceous Research","volume":"169 ","pages":"Article 106081"},"PeriodicalIF":1.9,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143180221","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}

引用次数: 0

Torreites milovanovici Grubić, 1979 in the Iranian Upper Cretaceous succession: Paleoenvironmental characteristics Torreites milovanovici Grubić, 1979 年，伊朗上白垩世演替：古环境特征

IF 1.9 3区地球科学

Cretaceous Research Pub Date : 2025-01-13 DOI: 10.1016/j.cretres.2025.106082

Mehdi Ghaedi

{"title":"Torreites milovanovici Grubić, 1979 in the Iranian Upper Cretaceous succession: Paleoenvironmental characteristics","authors":"Mehdi Ghaedi","doi":"10.1016/j.cretres.2025.106082","DOIUrl":"10.1016/j.cretres.2025.106082","url":null,"abstract":"<div><div>Genus <em>Torreites</em> shows different features in comparison to other types of rudists, making them important to interpret paleoenvironmental circumstances. In the study area which is located north of Shiraz (Zagros Basin, Interior Fars) (i.e. the northwesternmost section of <em>Torreites</em>-bearing sections of the Middle East) about 40 specimens from the Iranian section were analyzed to interpret the paleoecological characteristics of the Campanian monospecific layer. At first sight, their morphotypes reveal the substrate, hydrodynamic energy, and other factors. Except for a limited number of specimens, they predominantly function as elevators, indicating a relatively quiet surrounding environment. There are minor organisms, including corals, gastropods, sponges, other non-rudist bivalve groups, and polychaeta, helping for more precise interpretations. The <em>Torreites</em>-bearing carbonate layer is situated on a soft shaly and marly siliciclastic bed, and other organisms colonized a considerable proportion of the surface of <em>Torreites</em> specimens. As they are photosymbiont-bearing bivalves, they may play a significant role in interpreting environmental characteristics such as trophic conditions. In addition, as surface bioerosion increases in response to elevated nutrient levels, the prevailing trophic condition is supposed to be oligotrophic to mesotrophic. Also, based on marine constituents, and previous studies, the studied interval must be deposited in a tropical environment. Based on various interpretations, hydrodynamic energy has transitioned from low to moderate levels. Besides, bioerosion rates observed on different sides and coupled specimens imply that <em>Torreites</em> samples should have preferred directions.</div></div>","PeriodicalId":55207,"journal":{"name":"Cretaceous Research","volume":"169 ","pages":"Article 106082"},"PeriodicalIF":1.9,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143182273","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}

引用次数: 0

Multiple lines of evidence support anagenesis in Daspletosaurus and cladogenesis in derived tyrannosaurines

IF 1.9 3区地球科学

Cretaceous Research Pub Date : 2025-01-11 DOI: 10.1016/j.cretres.2025.106080

Charlie Roger Scherer

{"title":"Multiple lines of evidence support anagenesis in Daspletosaurus and cladogenesis in derived tyrannosaurines","authors":"Charlie Roger Scherer","doi":"10.1016/j.cretres.2025.106080","DOIUrl":"10.1016/j.cretres.2025.106080","url":null,"abstract":"<div><div>Tyrannosaurines were the dominant predators of Laramidian ecosystems during the Late Cretaceous. An anagenetic hypothesis for the evolution of derived tyrannosaurines in Laramidia has received considerable attention in recent years, although studies disagree on the degree of anagenetic and cladogenetic evolution driving tyrannosaurine evolution. These studies have relied on phylogenetic results of equal weights parsimony analysis and do not consider the impact of alternative phylogenetic methodologies. Here, I build on previous work by applying maximum likelihood Bayesian inference and Extended Implied Weights parsimony analyses to competing datasets and show that both of these methods provide additional support for anagenetic evolution in tyrannosaurines. In species-level and specimen-level analyses, species of the Campanian taxon <em>Daspletosaurus</em> form a paraphyletic grade of tyrannosaurines leading to Tyrannosaurini. However, <em>Daspletosaurus</em> is shown as a distinct lineage from Tyrannosaurini by using multiple lines of evidence including the geochronology and biogeography of tyrannosaurine specimens. A fully-resolved specimen-level topology allows for the application of species delimitation techniques and reveals potentially novel metaspecies of <em>Daspletosaurus</em>, although no new taxa are erected here as a conservative practice. Future detailed description of the specimens analysed by this contribution and previous work may provide justification for establishing novel <em>Daspletosaurus</em> metaspecies. Ongoing work in refining the phylogenetics of tyrannosauroids will also aid in elucidating the true mode of evolution in <em>Daspletosaurus</em>. This study underscores the importance of accounting for homoplasy in specimen-level analyses by differentially weighting homoplastic characters.</div></div>","PeriodicalId":55207,"journal":{"name":"Cretaceous Research","volume":"169 ","pages":"Article 106080"},"PeriodicalIF":1.9,"publicationDate":"2025-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143182274","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}

引用次数: 0

Provenance evolution and drainage reorganization during tectonic inversion of a continental rift basin: Detrital zircon evidence from the Late Cretaceous Songliao Basin, NE China

IF 1.9 3区地球科学

Cretaceous Research Pub Date : 2025-01-09 DOI: 10.1016/j.cretres.2024.106077

Zhengxuan Wu , Yuan Gao , Dongzhao An , Liangliang Zhang , Mingang Hao , Yuyin Li

{"title":"Provenance evolution and drainage reorganization during tectonic inversion of a continental rift basin: Detrital zircon evidence from the Late Cretaceous Songliao Basin, NE China","authors":"Zhengxuan Wu , Yuan Gao , Dongzhao An , Liangliang Zhang , Mingang Hao , Yuyin Li","doi":"10.1016/j.cretres.2024.106077","DOIUrl":"10.1016/j.cretres.2024.106077","url":null,"abstract":"<div><div>Since the Mesozoic, Northeast Asia has been profoundly influenced by the complex interactions of multiple tectonic systems. In the Late Cretaceous, subduction of the Pacific Plate beneath the Eurasian continent has caused compression of previous extensional system, called tectonic inversion, and triggered shrinkage of continental basins, such as the Songliao Basin. However, the relationship between the source-sink system and drainage pattern evolution in the Songliao Basin during the tectonic inversion period remains to be further studied, particularly in the late stage of the tectonic inversion, where the source-sink system lacks constraints from detrital zircon data. Based on the core obtained through the International Continental Scientific Drilling Project of the Songliao Basin, this study conducted U–Pb dating of the detrital zircons in the latest Cretaceous (∼70 Ma) Mingshui Formation. The zircon U–Pb data indicate that the most significant age peaks are 100 Ma, 170 Ma, and 267 Ma, while the relatively significant intervals include 220–230 Ma and 1799–1999 Ma. By comparing with the provenance areas, it is found that the provenance of the latest Cretaceous Songliao Basin, which belongs to the tectonic inversion stage, is distinctly different from that of the early Late Cretaceous post-rift stage. This significant change in the provenance system is attributed to the increased subduction rate of the Pacific plate and the shift in subduction direction since ∼84 Ma, which led to uplift and erosion in the southeastern part of the basin and consequently impacted the source-sink system of the basin.</div></div>","PeriodicalId":55207,"journal":{"name":"Cretaceous Research","volume":"168 ","pages":"Article 106077"},"PeriodicalIF":1.9,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143180238","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}

引用次数: 0

Application of Ostracoda from the Lower Cretaceous Liupanshan group at Pingliang (NW China) – Biostratigraphy and palaeoecology

IF 1.9 3区地球科学

Cretaceous Research Pub Date : 2025-01-08 DOI: 10.1016/j.cretres.2025.106079

Yaqiong Wang , Byung-Do Choi , Robin J. Smith , Deyan Wu

{"title":"Application of Ostracoda from the Lower Cretaceous Liupanshan group at Pingliang (NW China) – Biostratigraphy and palaeoecology","authors":"Yaqiong Wang , Byung-Do Choi , Robin J. Smith , Deyan Wu","doi":"10.1016/j.cretres.2025.106079","DOIUrl":"10.1016/j.cretres.2025.106079","url":null,"abstract":"<div><div>The ostracod fauna from the Liwaxia and Madongshan formations in the Pingliang area of the Liupanshan Basin are investigated in this study. Dominated by <em>Liupanshania typica</em> and <em>Lycopterocypris infantilis</em>, the fauna also includes <em>Ziziphocypris costata</em>, <em>Bisulcocypridea gaodianensis</em>, <em>Cypridea astuta</em>, <em>C. puncticulata</em>, <em>Mongolocypris liupanshanensis</em>, and <em>Limnocythere</em> sp. Our biostratigraphic analysis constrains the age of the Liwaxia Formation to Aptian to Albian and the Madongshan Formation to the Albian. These biostratigraphic findings facilitate the correlation of ostracods from the Liupanshan Group with contemporaneous faunas from adjacent basins in China and Mongolia, supporting the hypothesis of invertebrate faunal exchange within East Asia during the Early Cretaceous. Furthermore, the endemic genus <em>Liupanshania</em> is reassigned to the family Notodromadidae and subfamily Cyproidinae, based on the presence of anterior and posterior striated flanges. A significant radiation of Cyproidinae even Notodromadidae, occurred in Eurasia during the Barremian to Albian. Palaeoecologically, the dominance of the ostracod <em>Liupanshania</em> and its co-occurrence with stromatolites in the Pingliang area of the Liupanshan Basin suggest the presence of a saline lake under evaporative, arid climatic conditions.</div></div>","PeriodicalId":55207,"journal":{"name":"Cretaceous Research","volume":"168 ","pages":"Article 106079"},"PeriodicalIF":1.9,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143180237","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}

引用次数: 0

Turonian carbonate succession in central-southern Tunisia: Insights into depositional environments, sequence stratigraphy and south Tethyan margin correlations

IF 1.9 3区地球科学

Cretaceous Research Pub Date : 2024-12-28 DOI: 10.1016/j.cretres.2024.106074

Dhouha Jomaa Salmouna , Najeh Ben Chaabane , Ferid Dhahri , Abdellatif Salmouna

{"title":"Turonian carbonate succession in central-southern Tunisia: Insights into depositional environments, sequence stratigraphy and south Tethyan margin correlations","authors":"Dhouha Jomaa Salmouna , Najeh Ben Chaabane , Ferid Dhahri , Abdellatif Salmouna","doi":"10.1016/j.cretres.2024.106074","DOIUrl":"10.1016/j.cretres.2024.106074","url":null,"abstract":"<div><div>New sedimentological studies and sequence stratigraphic framework of the Turonian deposits, in Tunisia, were conducted to facilitate the reading of the local stratigraphic nomenclature by comparing it with the global stratigraphic data. A new sequence stratigraphic subdivision of the Turonian interval has been proposed, based on the lithological and paleontological characteristics from Berda, Chemsi, Orbata and Belkhir sections (Gafsa area).</div><div>A detailed sedimentological investigation of the Bireno carbonates, correlated later on with other sections (northern Chotts, Sidi Bouzid, and Kasserine areas), has allowed to recognize three facies associations. They are distributed along a ramp system, evolving from proximal to distal domain and highlighting a northward deepening, well evidenced by isopach and paleogeographic maps.</div><div>Four 3rd order sequences (S-1 to S-4) have been identified; they correspond to the Bahloul Formation (lowest Turonian), the Gattar and Annaba Members (lower Turonian), the Bireno Member (lower Turonian to upper Turonian), and the Lower Aleg Member (uppermost Turonian). The most transgressive intervals correspond to the Bahloul Formation (mfs1), the Annaba Member (mfs2) and the upper B2 unit (mfs3).</div><div>The regressive ones correspond to the Gattar member, B1, B3 and B4 units. This subdivision has allowed the tracing of reasonable timelines and the correlation of the Tunisian Turonian deposits with their analogues in the southern Tethyan margin.</div><div>This study will significantly help to improve the conception of stratigraphic architecture and the depositional morphology at the scale of the southern Tethyan margin.</div></div>","PeriodicalId":55207,"journal":{"name":"Cretaceous Research","volume":"168 ","pages":"Article 106074"},"PeriodicalIF":1.9,"publicationDate":"2024-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143180236","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}

引用次数: 0