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Macro- and microfeatures of Early Cambrian dolomitic microbialites from Tarim Basin, China J. Palaeogeogr. (IF 2.02) Pub Date : 2021-01-13 Ying Li; Hong-Xia Jiang; Ya-Sheng Wu; Wen-Qing Pan; Bao-Shou Zhang; Chong-Hao Sun; Guo Yang
The fabrics of microbialites preserved in limestones are generally better than in dolostones. What are the fabrics of the microbialites preserved in heavily dolomitized dolostones? This paper presents an example of a strongly dolomitized Cambrian microbialite profile. The Xiaoerblak Formation (Cambrian Series 2 Stage 3 and lower Stage 4) of the Sugaitblak section in Aksu, Xinjiang Uygur Autonomous
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A combined geophysical and lithological study on eruptive history and Quaternary lacustrine stratigraphy of a maar in Leizhou Peninsula, China J. Palaeogeogr. (IF 2.02) Pub Date : 2021-01-11 Cong Chen; Zhuo Zheng; Li-Feng Zeng; Fan Xiao; Li-Ping Tian; Kang-You Huang
As the second common type of volcanic vent on Earth, maar-diatreme volcanoes and their post-eruptive lacustrine sediments are a main focus of volcanology, palaeolimnology, palaeoclimatology and palaeontology. A number of maar-type volcanoes have been found in Leizhou Peninsula, South China, but little is known about their eruption processes and detailed stratigraphy of the post-eruptive sediments.
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Bioturbation of Thalassinoides from the Lower Cambrian Zhushadong Formation of Dengfeng area, Henan Province, North China J. Palaeogeogr. (IF 2.02) Pub Date : 2021-01-07 Yu-Chao Fan; Yong-An Qi; Ming-Yue Dai; Da Li; Bing-Chen Liu; Guo-Shuai Qing
Bioturbation plays a critical role in sediment mixing and biogeochemical cycling between sediment and seawater. An abundance of bioturbation structures, dominated by Thalassinoides, occurs in carbonate rocks of the Cambrian Series 2 Zhushadong Formation in the Dengfeng area of western Henan Province, North China. Determination of elemental geochemistry can help to establish the influence of burrowing
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Correction to: Thickening-upward cycles in deep-marine and deep-lacustrine turbidite lobes: examples from the Clare Basin and the Ordos Basin J. Palaeogeogr. (IF 2.02) Pub Date : 2020-11-26 Lei-Fu Zhang; Da-Zhong Dong
An amendment to this paper has been published and can be accessed via the original article.
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Palaeogeographic reconstruction of a fluvio-marine transitional system in Narmada rift basin, India — Implications on Late Cretaceous global sea-level rise J. Palaeogeogr. (IF 2.02) Pub Date : 2020-11-25 Biplab Bhattacharya; Suparna Jha; Prantik Mondal
Rising sea-levels in tectonically active epicontinental basins often lead to varied depositional settings and palaeogeography, mostly influenced by the net accommodation resulting from mutual interference of the extent and nature of landward encroachment by the sea and the net sedimentation. The Cenomanian Nimar Sandstone Formation, Bagh Group, Narmada rift basin, uniquely portrays the effect of sea-level
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Labechia carbonaria Smith 1932 in the Early Carboniferous of England; affinity, palaeogeographic position and implications for the geological history of stromatoporoid-type sponges J. Palaeogeogr. (IF 2.02) Pub Date : 2020-11-02 Stephen Kershaw; Consuelo Sendino
Stromatoporoid sponges were very abundant during the middle Palaeozoic Era and are thought to disappear at the end of the Devonian Period in the Hangenberg Crisis. However, there are records of organisms with stromatoporoid-type structure in Carboniferous strata, the subject of this study. The Viséan fossil Labechia carbonaria Smith 1932 has been discussed previously in literature and its affinity
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Detrital zircon U–Pb geochronology and geochemistry of the Riachuelos and Palma Sola beach sediments, Veracruz State, Gulf of Mexico: a new insight on palaeoenvironment J. Palaeogeogr. (IF 2.02) Pub Date : 2020-10-09 John S. Armstrong-Altrin
Zircons are abundant in the beach sediments. In this study, surface microtexture, mineralogy, bulk sediment geochemistry, trace element composition and U–Pb isotopic geochronology of detrital zircons collected from the Riachuelos and Palma Sola beach areas, southwestern Gulf of Mexico were performed to infer the sediment provenance and palaeoenvironment. The zircon microtexture was categorized as mechanically-
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The formation of authigenic deposits during Paleogene warm climatic intervals: a review J. Palaeogeogr. (IF 2.02) Pub Date : 2020-10-09 Santanu Banerjee; Tathagata Roy Choudhury; Pratul Kumar Saraswati; Sonal Khanolkar
Although Paleogene warm climatic intervals have received considerable attention for atmospheric and oceanographic changes, the authigenic mineralization associated with these time spans remains overlooked. An extensive review of the literature reveals a close correspondence between the high abundance of glauconite and warm climatic intervals during the Paleogene period. The abundance of phosphorite
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Halysis Høeg, 1932 — an ancestral tabulate coral from the Ordos Basin, North China J. Palaeogeogr. (IF 2.02) Pub Date : 2020-09-25 Li-Jing Zheng; Hong-Xia Jiang; Ya-Sheng Wu; Hong-Ping Bao; Yue-Yang Zhang; Jun-Feng Ren; Zheng-Liang Huang
The problematic calcareous microfossil Halysis is abundant in the Middle Ordovician Darriwilian Stage of the western edge of the Ordos Basin, North China. The rich and well-preserved specimens of Halysis in this area facilitate detailed studies for its skeletal construction and tube microstructure. Halysis differs from calcified cyanobacteria and calcareous red and green algae in morphology, skeletal
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A near-shore clastic-carbonate mixing mode in a continental rift basin (early Oligocene, eastern Shijiutuo Uplift, Bohai Bay Basin, China): sedimentology, reservoir characteristics and exploration practice J. Palaeogeogr. (IF 2.02) Pub Date : 2020-09-22 Xiao-Feng Du; Hao Liu; Xiao-Bo Huang; Zhang-Qiang Song; Wei Xu; Can Zhang
A comprehensive sedimentary and reservoir analysis was conducted based on seismic, well logging, core and relative test data, taking Members 1 and 2 of Shahejie Formation of the early Oligocene in the steep slope belt, eastern Shijiutuo Uplift (STU), Bohai Bay Basin (BBB) as a case. The study indicates that a near-shore mixed fan deposit formed in the study area and developed characteristics and pattern
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Hydrothermal-sedimentary dolomite — a case from the Middle Permian in eastern Junggar Basin, China J. Palaeogeogr. (IF 2.02) Pub Date : 2020-08-26 Shuai Zhang; Yi-Qun Liu; Hong Li; Xin Jiao; Ding-Wu Zhou
The Middle Permian Lucaogou Formation in the Jimusar Sag, eastern Junggar Basin, NW China, was deposited in a salt lake within an intracontinental rift basin with intense hydrothermal activity. Hydrothermal-sedimentary dolomite in the form of three types of dolostones, namely, analcime-feldspar dolostone (AFD), silicic dolostone (SD) and buddingtonite-albite dolostone (BAD), related to syn-sedimentary
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New freshwater plesiosaurian materials from the Middle Jurassic Xintiangou Formation of the Sichuan Basin, southwestern China J. Palaeogeogr. (IF 2.02) Pub Date : 2020-08-24 Feng Zhang; Hai-Dong Yu; Can Xiong; Zhao-Ying Wei; Guang-Zhao Peng; Xue-Fang Wei
Sichuan Basin is very famous for the Mesozoic reptiles, especially the Jurassic dinosaurs. Here, we report some isolated plesiosaurian teeth and vertebrae newly excavated from the Middle Jurassic Xintiangou Formation in Yunyang county, Chongqing City, the northeastern region of the Sichuan Basin, southwestern China. The specimens are referred to Pliosauroidea based on the combination of the following
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Early-Middle Permian palynoflora of Shandong Province, eastern North China J. Palaeogeogr. (IF 2.02) Pub Date : 2020-08-19 Tian-Tao Yin; Shou-Jun Li; Xiang-Yu Zhang; Xiu-Li Zhao
The Permian Taiyuan and Shanxi formations exposed in Shandong Province, eastern North China, contain abundant spores and pollen. In this study, a total of 42 genera and 146 species of spores and pollen from these Permian formations, native to northern China, are identified and related to the three epochs of the Permian Period (Cisuralian, Guadalupian, and Lopingian Epochs) as two assemblages: Assemblage
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The use of mineral interfaces in sand-sized volcanic rock fragments to infer mechanical durability J. Palaeogeogr. (IF 2.02) Pub Date : 2020-08-12 Emilia Le Pera; Consuele Morrone
The use of mineral interfaces, in sand-sized rock fragments, to infer the influence exerted by mechanical durability on the generation of siliciclastic sediments, has been determined for plutoniclastic sand. Conversely, for volcaniclastic sand, it has received much less attention, and, to our knowledge, this is the first attempt to make use of the volcaniclastic interfacial modal mineralogy of epiclastic
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Paleosols in an outcrop of red beds from the Upper Cretaceous Yaojia Formation, southern Songliao Basin, Jilin Province, NE China J. Palaeogeogr. (IF 2.02) Pub Date : 2020-08-05 Li Zhang; Zhi-Dong Bao; Chang-Min Zhang; Lu-Xing Dou; Ping Fu; Jia-Hong Zhao; Wu-Xue Wang; Yu Ji
Paleosols in an outcrop of fluvial–lacustrine red beds have been recognized in the Upper Cretaceous Yaojia Formation in southern Songliao Basin, Songyuan City, Jilin Province, NE China. They are recognized in the field by pedogenic features, including root traces and burrows, soil horizons and soil structures. Root traces are remnants of small herbaceous plants, elongating and branching downwards in
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Provenance of upper Permian-lowermost Triassic sandstones, Wutonggou low-order cycle, Bogda Mountains, NW China: implications on the unroofing history of the Eastern North Tianshan Suture J. Palaeogeogr. (IF 2.02) Pub Date : 2020-07-30 Dong-Yu Zheng; Wan Yang
This study investigates the provenance of sedimentary rocks in Bogda Mountains, NW China, and reconstructs the lithology and unroofing history of the Eastern North Tianshan Suture. Petrographic point counting data of sandstones and compositions of conglomerates of upper Permian-lowermost Triassic Wutonggou low-order cycle from Zhaobishan, North Tarlong, Taodonggou, and Dalongkou sections in the southern
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Demise of the Jabłonna Reef (Zechstein Limestone) and the onset of gypsum deposition (Wuchiapingian, west Poland): carbonate-to-evaporite transition in a saline giant J. Palaeogeogr. (IF 2.02) Pub Date : 2020-07-03 Tadeusz Marek Peryt; Marek Jasionowski; Paweł Raczyński; Krzysztof Chłódek
Microbial deposits commonly occur at the transition between carbonate and sulphate facies, and they also abound in the uppermost part of the middle Wuchiapingian Zechstein Limestone in west Poland. These deposits occur as isolated reefs of the basinal zone and in the condensed sequences in most parts of the study area. The deposits of the latter category reflect evaporative drawdown, and the abrupt
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Hyperpycnal (over density) flows and deposits J. Palaeogeogr. (IF 2.02) Pub Date : 2020-06-19 Carlos Zavala
A hyperpycnal flow forms when a relatively dense land-derived gravity flow enters into a marine or lacustrine water reservoir. As a consequence of its excess of density, the incoming flow plunges in coastal areas, generating a highly dynamic and often long-lived dense underflow. Depending on the characteristics of the parent flow (flow duration and flow rheology) and basin salinity, the resulting deposits
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Marine transgression(s) to evaporite basin: The case of middle Miocene (Badenian) gypsum in the Central Paratethys, SE Poland J. Palaeogeogr. (IF 2.02) Pub Date : 2020-06-05 Danuta Peryt; Przemysław Gedl; Tadeusz Marek Peryt
The middle Miocene Badenian evaporite basin of the Carpathian Foredeep Basin was a saline lake, separated by a barrier from the sea and supplied with seawater seeping through the barrier or overflowing it occasionally in the form of short-lived marine transgressions. Such transgressions could leave behind marine microfossils in marly clay intercalations. One of them (2.3 m thick) occurs in the uppermost
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Large soft-sediment deformation structures (SSDS) in the Permian Barren Measures Formation, Pranhita-Godavari Valley, India: potential link to syn-rift palaeoearthquake events J. Palaeogeogr. (IF 2.02) Pub Date : 2020-05-29 Biplab Bhattacharya; Abhirup Saha
Records of palaeoearthquakes in sedimentary rocks are often debated due to the potential confusion in distinguishing seismic versus aseismic trigger mechanisms causing liquefaction. The present paper documents some unique soft-sediment deformation structures (SSDS), characterized by their extremely large size, complex morphology and preservation in coarse-grained pebbly sandstone. The SSDS are present
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Palynomorph assemblage biozonation of Paleogene strata in Bende–Umuahia Area, Niger Delta Basin, southeastern Nigeria J. Palaeogeogr. (IF 2.02) Pub Date : 2020-05-26 Okechukwu Nicodemus Ikegwuonu; Obianuju Patricia Umeji; Osita Igwebuike Chiaghanam; Kingsley K. Nwozor; Otobong Sunday Ndukwe; Kingsley Chukwuebuka Chiadikobi
Cenozoic sediments form extensive outcrops in the Niger Delta Basin. Detailed palynostratigraphic study was undertaken across Paleogene sequences exposed in Bende–Umuahia Area in up-dip sectors of the Niger Delta Basin, southeastern Nigeria, to establish different palynomorphs assemblage zones, with their corresponding ages. Palynological analysis was carried out on 27 selected outcrop samples, using
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Continental chemical weathering during the Early Cretaceous Oceanic Anoxic Event (OAE1b): a case study from the Fuxin fluvio-lacustrine basin, Liaoning Province, NE China J. Palaeogeogr. (IF 2.02) Pub Date : 2020-04-26 Xiao-Tao Xu; Long-Yi Shao; Bo Lan; Shuai Wang; Jason Hilton; Jian-Yi Qin; Hai-Hai Hou; Jie Zhao
This study focuses on Early Cretaceous mudstones from the Shahai and Fuxin formations in the Fuxin continental basin. We analyse chemical weathering, land surface temperatures and palaeoclimates based on chemical weathering indices, and emphasize the implications of continental chemical weathering on nutrient fluxes into lakes and oceans. According to Cr and Ni abundance, Al2O3-TiO2, La/Sc-Th/Co and
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Thickening-upward cycles in deep-marine and deep-lacustrine turbidite lobes: examples from the Clare Basin and the Ordos Basin J. Palaeogeogr. (IF 2.02) Pub Date : 2020-04-24 Lei-Fu Zhang; Da-Zhong Dong
Deep-marine and deep-lacustrine reservoirs have been targets for conventional and unconventional oil and gas exploration and development for decades. Thickening-upward cycles in the deep-marine Carboniferous Ross Sandstone Formation outcrops in western Ireland and the deep-lacustrine Triassic Yanchang Formation outcrops in southeast Ordos Basin have been investigated and correlated in this study. Typical
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Ancient rip current records and their implications: an example from the Cretaceous Ukra Member, Kutch, India J. Palaeogeogr. (IF 2.02) Pub Date : 2020-04-23 Subir Sarkar; Amlan Koner
Poorly-sorted conglomerate patches rich in granules or sturdy fossils or both, and reddish mud matrix within the interstices stand out amidst fine-grained siliciclastic shelf sediments of the trangressive systems tract (TST) of the Lower Cretaceous Ukra Member, Kutch Basin, India. The siliciclastic shelf sediments contrast the conglomerates with their remarkable lateral extension. The fossils belong
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Sedimentary characteristics of microbialites influenced by volcanic eruption: a case study from the Lower Cretaceous Shipu Group in Zhejiang Province, East China J. Palaeogeogr. (IF 2.02) Pub Date : 2020-04-20 Xiao-Fang Wang; Xiu-Cheng Tan; Shao-Nan Zhang; An-Jiang Shen; Chang Li; Guang Hu; Xin Wang; Zi-Liao Chen; Li-Yin Pan; Jie Zhang; Wei Chen
This study describes a sequence of microbialites and volcanics of the Lower Cretaceous Shipu Group, an example of microbialites influenced by volcanic activity. It is located at Shipu town in eastern Zhejiang Province on the coast of southeastern China. Based on macroscopic outcrop observations, microscopic examination of thin sections, electron probe microanalysis (EPMA), field emission scanning electron
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Asia–Gondwana connections indicated by Devonian fishes from Australia: palaeogeographic considerations J. Palaeogeogr. (IF 2.02) Pub Date : 2020-04-07 Gavin Charles Young; Jing Lu
Middle Palaeozoic vertebrate fossil occurrences are summarised for Australia, with reference to faunal connections between Asia and East Gondwana, as first indicated by fish distributions of Lower Devonian fossil sites. Major endemic groups discussed are pituriaspid (Australian) and galeaspid (Asian) agnathans, wuttagoonaspids (Australian) and antarctaspid (Antarctic, Australian, Asian) arthrodires
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Morphology and features of Cambrian oncoids and responses to palaeogeography of the North China Platform J. Palaeogeogr. (IF 2.02) Pub Date : 2020-02-28 En-Zhao Xiao; Ming-Xiang Mei; Shu Jiang; Tehseen Zafar
The Cambrian strata in the North China Platform are fully exposed. A wide variety of carbonate oncoids with different shapes occur in the Xuzhuang and Zhangxia formations (Miaolingian Series) from six Cambrian sections in the study area. A comprehensive study involving outcrop description, microscopic observation, scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), X-ray
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Benthic foraminiferal assemblages from the Safranbolu Formation (Cuisian, Eocene), Northwest Anatolia, Turkey J. Palaeogeogr. (IF 2.02) Pub Date : 2020-02-21 Kubra Okur; Hatice Kutluk
Twenty-one outcrop samples collected from a 28-m-thick section from the Safranbolu Formation of the southwestern part of the Safranbolu Basin, Anatolia, Turkey yielded well-preserved benthic foraminifera belonging mainly to the genera Alveolina, Nummulites, Assilina, Rotalia, Disclocyclina and Orbitolites. Alveolina is the most diversified genus that is represented by sixteen species: Alveolina archiaci
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A new early Visean coral assemblage from Azrou-Khenifra Basin, central Morocco and palaeobiogeographic implications J. Palaeogeogr. (IF 2.02) Pub Date : 2020-02-11 Sergio Rodríguez; Ian D. Somerville; Pedro Cózar; Javier Sanz-López; Ismael Coronado; Felipe González; Ismail Said; Mohamed El Houicha
A new early Visean coral assemblage has been recorded from turbidite facies in the southern part of the Azrou-Khenifra Basin, northwest of Khenifra, central Morocco. The newly discovered Ba Moussa West (BMW) coral fauna includes Siphonophyllia khenifrense sp. nov., Sychnoelasma urbanowitschi, Cravenia lamellata, Cravenia tela, Cravenia rhytoides, Turnacipora megastoma and Pleurosiphonella crustosa
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Age of the earliest transgressive event in the Krishna-Godavari Basin, India: evidence from dinoflagellate cysts and planktonic foraminifera biostratigraphy J. Palaeogeogr. (IF 2.02) Pub Date : 2020-02-07 Ashish Kumar Mishra; Nallamuthu Malarkodi; Arun Deo Singh; Dinesh Babu; Vandana Prasad
A combined biostratigraphic study of dinoflagellate cysts and foraminifera was carried out on Early Cretaceous subsurface well cutting sediments from well A (DNG) (2800–2746 m depth) from the Krishna-Godavari Basin, India. The last appearance datum of marker species of dinoflagellate cysts and planktonic foraminifera was considered for the construction of the biostratigraphic framework. The study shows
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Liquefaction structures induced by the M5.7 earthquake on May 28, 2018 in Songyuan, Jilin Province, NE China and research implication J. Palaeogeogr. (IF 2.02) Pub Date : 2020-02-04 Zhu-Fu Shao; Jian-Hua Zhong; John Howell; Bing Hao; Xi-Wu Luan; Ze-Xuan Liu; Wei-Min Ran; Yun-Feng Zhang; Hong-Qi Yuan; Jing-Jing Liu; Liang-Tian Ni; Guan-Xian Song; Jin-Lin Liu; Wen-Xin Zhang; Bing Zhao
An earthquake of magnitude M5.7 occurred in Yamutu village, Songyuan City, Jilin Province, NE China (45°16′12″N/124°42′35″E) on May 28, 2018, with a focal depth of 13 km. The epicenter is located at the intersection of the Fuyu/Songyuan-Zhaodong Fault, Second Songhua River Fault and Fuyu North Fault which lies northwest of Tancheng-Lujiang Fault (Tan-Lu Fault). The earthquake-induced widespread liquefaction
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The sedimentary dynamics of Sabellaria alveolata bioconstructions (Ostia, Tyrrhenian Sea, central Italy) J. Palaeogeogr. (IF 2.02) Pub Date : 2020-01-13 Stefania Nunzia Lisco; Pasquale Acquafredda; Salvatore Gallicchio; Luisa Sabato; Andrea Bonifazi; Frine Cardone; Giuseppe Corriero; Maria Flavia Gravina; Cataldo Pierri; Massimo Moretti
Sabellaria alveolata (Linnaeus 1767) is a polychaete able to build bioconstructions of different thickness, size and patchiness, in intertidal and subtidal environments. Its biological features have been the object of numerous studies worldwide. The worm reefs are formed by millions of tubes built by sand and shells (whole or in fragments) bonded together with a strong glue produced by the worm itself
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Ooidal ironstones in the Meso-Cenozoic sequences in western Siberia: assessment of formation processes and relationship with regional and global earth processes J. Palaeogeogr. (IF 2.02) Pub Date : 2020-01-01 Maxim Rudmin; Santanu Banerjee; Elshan Abdullayev; Aleksey Ruban; Ekaterina Filimonenko; Elena Lyapina; Roman Kashapov; Aleksey Mazurov
This study investigates the process of formation of ooidal ironstones in the Upper Cretaceous-Paleogene succession in western Siberia. The formation of such carbonate-based ironstones is a continuing problem in sedimentary geology, and in this study, we use a variety of data and proxies assembled from core samples to develop a model to explain how the ooidal ironstones formed. Research on pyrite framboids
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First steps in reconstructing Early Jurassic sea water temperatures in the Andean Basin of northern Chile based on stable isotope analyses of oyster and brachiopod shells J. Palaeogeogr. (IF 2.02) Pub Date : 2019-11-22 Matthias Alberti; Franz T. Fürsich; Nils Andersen
The stable isotope (δ13C, δ18O) composition of a collection of Lower Jurassic brachiopods and oysters from the Andean Basin of northern Chile was analyzed. The results allow the first reconstruction of absolute water temperatures for several ammonite zones in the Lower Jurassic of South America. The temperature record starts with comparatively high values in the Late Sinemurian (average: 27.0 °C; Raricostatum
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A review on the definitions of terms of sedimentary facies J. Palaeogeogr. (IF 2.02) Pub Date : 2019-11-15 Zeng-Zhao Feng
In recent years, in some papers and manuscripts published in and submitted to the Journal of Palaeogeography (Chinese Edition and English Edition), the authors named the rocks or rock types as “microfacies” or “lithofacies”, named the microfeatures in thin-sections under microscope as “microfacies”, and named the macrofeatures of rocks as “macrofacies”. I wrote two short papers “Words of the Editor-in-Chief
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Reply to discussions by Zavala (2019) and by Van Loon, Hüeneke, and Mulder (2019) on Shanmugam, G. (2018, Journal of Palaeogeography, 7 (3): 197–238): ‘the hyperpycnite problem’ J. Palaeogeogr. (IF 2.02) Pub Date : 2019-11-08 G. Shanmugam
In this reply, I respond to 18 issues associated with comments made by Zavala (e.g., inverse- to normally-graded sequence, origin of massive sands, experimental sandy debris flows, tidal rhythmites, facies models, etc.), and 10 issues associated with comments made by Van Loon et al. (e.g., 16 types of hyperpycnal flows, anthropogenic hyperpycnal flow, etc.).
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Triassic (Anisian and Rhaetian) palaeomagnetic poles from the Germanic Basin (Winterswijk, the Netherlands) J. Palaeogeogr. (IF 2.02) Pub Date : 2019-11-08 Lars P. P. van Hinsbergen; Douwe J. J. van Hinsbergen; Cor G. Langereis; Mark J. Dekkers; Bas Zanderink; Martijn H. L. Deenen
In this paper, we provide two new Triassic palaeomagnetic poles from Winterswijk, the Netherlands, in the stable interior of the Eurasian plate. They were respectively collected from the Anisian (~ 247–242 Ma) red marly limestones of the sedimentary transition of the Buntsandstein Formation to the dark grey limestones of the basal Muschelkalk Formation, and from the Rhaetian (~ 208–201 Ma) shallow
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Alluvial sedimentation and tectono-stratigraphic evolution in a narrow extensional zigzag basin margin (northern Teruel Basin, Spain) J. Palaeogeogr. (IF 2.02) Pub Date : 2019-10-11 Lope Ezquerro; Aránzazu Luzón; José L. Simón; Carlos L. Liesa
The northern part of the eastern margin of the extensional Neogene Teruel Basin (central-eastern Spain) consists of a non-linear, zigzag fault zone made of alternating ca. 2 km long, NNW-SSE trending segments and shorter NNE-SSW ones. Good outcrop conditions made possible a comprehensive integrated stratigraphic and structural study, especially focused on coarse clastic sediments deposited along the
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Repeated occurrence of palaeo-wildfires during deposition of the Bahariya Formation (early Cenomanian) of Egypt J. Palaeogeogr. (IF 2.02) Pub Date : 2019-08-26 Haytham El Atfy; Tarek Anan; André Jasper; Dieter Uhl
The Upper Cretaceous (early Cenomanian) Bahariya Formation of Egypt has an outstanding reputation for its wealth of vertebrate remains, including a variety of iconic dinosaurs, like the carnivorous Spinosaurus and Carcharodontosaurus, as well as the herbivorous Aegyptosaurus and Paralititan. Besides these dinosaur fossils, the Bahariya Formation yielded also a wealth of invertebrate and plant remains
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The first record of freshwater plesiosaurian from the Middle Jurassic of Gansu, NW China, with its implications to the local palaeobiogeography J. Palaeogeogr. (IF 2.02) Pub Date : 2019-08-13 Ting Gao; Da-Qing Li; Long-Feng Li; Jing-Tao Yang
Plesiosaurs are one of the common groups of aquatic reptiles in the Mesozoic, which mainly lived in marine environments. Freshwater plesiosaurs are rare in the world, especially from the Jurassic. The present paper reports the first freshwater plesiosaur, represented by four isolated teeth from the Middle Jurassic fluviolacustrine strata of Qingtujing area, Jinchang City, Gansu Province, Northwest
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Role of calcimicrobes and microbial carbonates in the Late Carboniferous (Moscovian) mounds in southern Guizhou, South China J. Palaeogeogr. (IF 2.02) Pub Date : 2019-07-31 Wen-Tao Huang; Yong-Li Zhang; Chang-Qing Guan; Zhuo-Wei Miao; Xiao-Hong Chen; Zhen-Yuan Yang; Xiao Li; En-Pu Gong
Various microbial fabrics characterize late Moscovian mounds in Houchang Town, southern Guizhou, South China. The dominant components of the mounds are microbial boundstones with stromatolitic structures, irregular oncoid-like forms, and wrinkle structures. Calcimicrobes recognized in the mounds include Girvanella, Ortonella, Wetheredella-like, Palaeomicrocodium-like, and some problematic calcimicrobes
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Words of the Editor-in-Chief —— some ideas about the comments and discussions of hyperpycnal flows and hyperpycnites J. Palaeogeogr. (IF 2.02) Pub Date : 2019-07-01 Zeng-Zhao Feng
I basically agree with the viewpoints of Shanmugam (Journal of Palaeogeography 7(3):197-238, 2018) and Zavala (Journal of Palaeogeography 8(3), 2019) who cited, refined and interpreted the definitions of hypopycnal flow, homopycnal flow and hyperpycnal flow. I appreciate two typical case studies of hyperpycnal flows induced by the Yellow River and Yangtze River, and the Gaoping River. The former is
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The new knowledge is written on sedimentary rocks – a comment on Shanmugam’s paper “the hyperpycnite problem” J. Palaeogeogr. (IF 2.02) Pub Date : 2019-06-21 Carlos Zavala
In a recent contribution G. Shanmugam (2018) discusses and neglects the importance of hyperpycnal flows and hyperpycnites for the understanding of some sediment gravity flow deposits. For him, the hyperpycnal flow paradigm is strictly based on experimental and theoretical concepts, without the supporting empirical data from modern depositional systems. In this discussion I will demonstrate that G.
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The hyperpycnite problem: comment J. Palaeogeogr. (IF 2.02) Pub Date : 2019-06-13 A. J. (Tom) van Loon; Heiko Hüneke; Thierry Mulder
A recent review article (“The hyperpycnite problem”) by Shanmugam (Journal of Palaeogeography 7(3):197–238, 2018) in this journal has some shortcomings, comes to scientifically incorrect conclusions, and calls for student education in a way that would significantly diminish the students’ changes for a geological career. Having studied--and still studying--hyperpycnites in the field, it seems only appropriate
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Eocene foraminiferal biofacies in Kutch Basin (India) in context of palaeoclimate and palaeoecology J. Palaeogeogr. (IF 2.02) Pub Date : 2019-06-03 Sonal Khanolkar; Pratul Kumar Saraswati
The Eocene Epoch passed through multiple hyperthermal events and recorded highest temperatures in the Cenozoic. Very few studies from Eocene palaeotropical sites have recorded changes in shallow marine foraminiferal assemblages. The present study investigates the foraminiferal biofacies of shallow marine successions from a palaeotropical site in western India (Kutch Basin) to understand the palaeoclimate
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Early Triassic microbialites from the Changxing Region of Zhejiang Province, South China J. Palaeogeogr. (IF 2.02) Pub Date : 2019-05-30 Ya-Fei Huang; David P. G. Bond; Yong-Biao Wang; Tan Wang; Zhi-Xing Yi; Ai-Hua Yuan; Jia-Yuan Jia; Yu-Qi Su
Microbialites, often considered as a signal of extreme marine environment, are common in the Lower Triassic strata of South China where they flourished in the aftermath of the end-Permian mass extinction. Early Triassic microbialite facies are known to vary palaeogeographically, perhaps due to differing climates, ocean chemistry, and water depths. This paper provides the first record of a brief, but
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Growth mechanisms and environmental implications of carbonate concretions from the ~ 1.4 Ga Xiamaling Formation, North China J. Palaeogeogr. (IF 2.02) Pub Date : 2019-05-16 An-Qi Liu; Dong-Jie Tang; Xiao-Ying Shi; Li-Min Zhou; Xi-Qiang Zhou; Mo-Han Shang; Yang Li; Hu-Yue Song
Carbonate concretions provide unique records of ancient biogeochemical processes in marine sediments, and have the potential to reflect seawater chemistry indirectly. In fine-siliciclastic settings, they preferentially form in organic-rich mudstones, owing to a significant fraction of the bicarbonate required for carbonate precipitation resulted from the decomposition of organic matter in sediments
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Development characteristics and controlling factor analysis of the Neogene Minghuazhen Formation shallow water delta in Huanghekou area, Bohai offshore basin J. Palaeogeogr. (IF 2.02) Pub Date : 2019-05-10 Li-Xin Tian; Hao Liu; Cheng-Min Niu; Xiao-Feng Du; Bo Yang; Xiao-Dong Lan; Dan-Lei Chen
Based on a combination of high resolution 3-D seismic, drilling and well logging and core data, this study focuses on describing the depositional features of the Neogene Minghuazhen Formation shallow water delta in Huanghekou area (HHKA), Bohai offshore basin and discussing the evolution and controlling factors of shallow water delta sandbody. An obvious meandering fluvial delta system developed in
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Palaeoenvironmental setting of lacustrine stromatolites in the Miocene Wudaoliang Group, northern Tibetan Plateau J. Palaeogeogr. (IF 2.02) Pub Date : 2019-05-02 Ling-Qi Zeng; Hai-Sheng Yi; Guo-Qing Xia; Klaus Simon; Christine Heim; Gernot Arp
Lacustrine stromatolites were widespread in the Miocene Wudaoliang Group (stromatolites of the Wudaoliang Group), northern Tibetan Plateau; but only at one location nearby the Wudaoliang Town, they occurred intensively in thick, laterally traceable beds (Wudaoliang stromatolites). Although deposited in lacustrine environment, the lack of fossils in these rocks hampers determining whether the stromatolites
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Characteristics of Early Cretaceous wildfires in peat-forming environment, NE China J. Palaeogeogr. (IF 2.02) Pub Date : 2019-04-30 Shuai Wang; Long-Yi Shao; Zhi-Ming Yan; Ming-Jian Shi; Yun-He Zhang
Inertinite maceral compositions in coals from the Early Cretaceous Erlian, Hailar, and Sanjiang Basins in NE China are analyzed in order to reveal palaeowildfire events and palaeoclimate variations. Although huminite is the dominant maceral group in the studied basins, the inertinite group, as a byproduct of palaeowildfires, makes up a considerable proportion. Occurrence of inertinite macerals indicates
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Application of channel-belt scaling relationship to Middle Jurassic source-to-sink system in the Saishiteng area of the northern Qaidam Basin, NW China J. Palaeogeogr. (IF 2.02) Pub Date : 2019-04-11 Bing-Qiang Liu; Long-Yi Shao; Xue-Tian Wang; Ya-Nan Li; Jie Xu
Palaeodrainage basin, as an important component of the source-to-sink system, contains critical information on provenance and palaeoenvironment. Previous studies indicate that the scaling relationships of source-to-sink system components generally follow power laws, and channel-belt thickness represents a reliable first-order proxy for the drainage area. In this study, a database of borehole cores
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Fruits of Scirpus (Cyperaceae) from the early Miocene of Weichang, Hebei Province, North China and their palaeoecological and palaeobiogeographical implications J. Palaeogeogr. (IF 2.02) Pub Date : 2019-04-11 Ping Lu; Ya Li; Jian-Wei Zhang; Xiao-Qing Liang; Yue-Zhuo Li; Cheng-Sen Li
This paper describes the fossil fruits of Scirpus weichangensis X.Q. Liang, sp. nov. from the early Miocene of Guangyongfa Village, Weichang County, Hebei Province, North China. The fossil fruits are obovate in shape and their lateral sections are plumply trigonous. The cell walls of the surface are straight. The persistent stout bristles have downward-directed barbellae in distal 1/2. The occurrence
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The floristic relationship between the upland and lowland Carboniferous wetlands of Variscan Euramerica — Evidence from some medullosalean pteridosperm fronds J. Palaeogeogr. (IF 2.02) Pub Date : 2019-04-01 Christopher J. Cleal; Borja Cascales-Miñana
Alethopteris grandinii represents remains of fronds of a medullosalean pteridosperm (probably a small tree) that rapidly migrated across the lowland wetland habitats of Variscan Euramerica in middle Asturian (late Moscovian) times. This was probably caused by changing drainage patterns within the lowland coal swamps, in response to climate and landscape changes. However, these medullosaleans had first
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Coupling textural and stable-isotope variations in fluvial stromatolites: Comparison of Pleistocene and recent records in NE Spain J. Palaeogeogr. (IF 2.02) Pub Date : 2019-03-08 C. Arenas; M. C. Osácar; L. Auqué; C. Sancho
Textural and stable isotopic features of two middle Pleistocene fluvial stromatolite profiles are compared to a recent stromatolite, both formed in the River Piedra system (NE Spain), to test the reliability of climatic, hydrologic and depositional information derived from ancient records. The Pleistocene stromatolites formed in a multi-domed, highly-inclined cascade-barrage. The recent stromatolite
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Review of the bennettitalean genus Weltrichia J. Palaeogeogr. (IF 2.02) Pub Date : 2019-02-27 Mihai Emilian Popa
The bennettitalean male reproductive structure Weltrichia Braun 1849 emend. Harris 1969 (Family Williamsoniaceae) is discussed from several points of view, including anatomy and morphology, species diversity and validity, phytogeographical and stratigraphical distribution, and reproduction strategy. A very rare fossil, genus Weltrichia includes 25 valid species distributed in both hemispheres during
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Sedimentology of reefal buildups of the Xiannüdong Formation (Cambrian Series 2), SW China J. Palaeogeogr. (IF 2.02) Pub Date : 2019-02-27 Hao Tang; Stephen Kershaw; Xiu-Cheng Tan; Hong Liu; Fei Li; Cheng Shen; Fei-Fan Lu; Xue-Fei Yang
The reefs in the Xiannüdong Formation (Cambrian Series 2) are the oldest archaeocyathan–microbial bioconstructions in China, but the details of their microbial structures have not been previously described. However, a new section at Tangjiahe site, northern Sichuan Province, contains very well-preserved microbial fabrics that provide these details, and is described in this study. The Tangjiahe section
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The first theropod tracks from the Middle Jurassic of Gansu, Northwest China: new and rare evidence of quadrupedal progression in theropod dinosaurs J. Palaeogeogr. (IF 2.02) Pub Date : 2019-02-26 Da-Qing Li; Li-Da Xing; Martin G. Lockley; Anthony Romilio; Jing-Tao Yang; Long-Feng Li
A new Middle Jurassic tracksite dominated by non-avian theropod footprints from the Wangjiashan Formation in Pingchuan District, Baojishan Basin, Gansu Province has yielded a unique trackway with four consecutive manus-pes sets. Only three previous examples, all Early Jurassic in age, of theropod trackways are known with convincing examples of manus tracks and in each case, only two tracks were recorded
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Correction to: The complexity of climate reconstructions using the coexistence approach on Qinghai–Tibetan Plateau J. Palaeogeogr. (IF 2.02) Pub Date : 2019-02-06 Zhi-Yong Zhang; Dong-Mei Cheng; Cheng-Sen Li; Wan Hu; Xuan-Huai Zhan; Hong-Li Ji
After publication of this article (Zhang et al., 2019), it is noticed the article contains some error:
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Correction to: The first occurrence of Phlebopteris dunkeri and P. woodwardii (Matoniaceae) from the middle Jurassic of Iran J. Palaeogeogr. (IF 2.02) Pub Date : 2019-02-02 Mohammad Taghi Badihagh; Dieter Uhl
After publication of this article (Badihagh & Uhl, 2019), it is noticed the article contains some error:
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Correction to: Using geophysical logs to identify Milankovitch cycles and to calculate net primary productivity (NPP) of the Late Permian coals, western Guizhou, China J. Palaeogeogr. (IF 2.02) Pub Date : 2019-01-30 Zhi-Ming Yan; Long-Yi Shao; David Large; Hao Wang; Baruch Spiro
After publication of this article (Yan et al. 2019), it is noticed the article contains some error.
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