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Paleoceanographic evolution of the Japan Sea during the Pleistocene – A benthic foraminiferal perspective Palaeogeogr. Palaeoclimatol. Palaeoecol. (IF 2.833) Pub Date : 2021-01-14 Manisha Das; Raj K. Singh; Ann Holbourn; S.H. Farooq; Nishant Vats; D.K. Pandey
We reconstructed the paleoceanographic evolution of the Japan Sea over the Pleistocene using benthic foraminiferal and organic geochemical records from sediment cores recovered at IODP Site U1426, which was drilled at a water depth of 900 m on the Oki Ridge in the southern Japan Sea. The dominant benthic foraminiferal biofacies and the assemblage composition, total organic and inorganic carbon, coarse
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Late Jurassic temperatures for the southern Tethyan margin based on belemnites δ18O from the Ouarsenis Mountains, northwestern Algeria Palaeogeogr. Palaeoclimatol. Palaeoecol. (IF 2.833) Pub Date : 2021-01-14 Radouane Sadji; Axel Munnecke; Miloud Benhamou; Matthias Alberti; Salim Belkhedim; Nabil Ramdane
This study presents the first record of stable carbon and oxygen isotopes of well-preserved belemnites and bulk sediment from the Upper Jurassic pelagic carbonates of the Ouarsenis Mountains (northwestern Algeria), which were deposited at the southern margin of the Tethys ocean. Cathodoluminescence and scanning electron microscopy was used to eliminate potentially diagenetically altered specimens (brachiopods
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Biogeochemical evolution and organic carbon deposition on the Northwestern European Shelf during the Toarcian Ocean Anoxic Event Palaeogeogr. Palaeoclimatol. Palaeoecol. (IF 2.833) Pub Date : 2020-12-25 Alexander J.P. Houben; Tatiana Goldberg; Caroline P. Slomp
The Toarcian Oceanic Anoxic Event (T-OAE, ~183 Ma) represents a well-known episode of organic-rich deposition, which is accompanied by a substantial negative carbon-isotope excursion (CIE). Underpinning the relationships between the carbon-cycle perturbation, ocean anoxia, primary productivity feedbacks and the enrichment of sedimentary organic carbon remains a major challenge. Here, we present high-resolution
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A geomagnetic polarity stratigraphy for the Middle and Upper Ordovician Palaeogeogr. Palaeoclimatol. Palaeoecol. (IF 2.833) Pub Date : 2021-01-13 Mark W. Hounslow; Samuel E. Harris; Krystian Wójcik; Jerzy Nawrocki; Kenneth T. Ratcliffe; Nigel H. Woodcock; Paul Montgomery
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Palaeoecology of Middle Triassic tetrapod ichnoassociations (middle Muschelkalk, NE Iberian Peninsula) and their implications for palaeobiogeography in the western Tethys region Palaeogeogr. Palaeoclimatol. Palaeoecol. (IF 2.833) Pub Date : 2021-01-02 Chabier De Jaime-Soguero; Eudald Mujal; Jaume Dinarès-Turell; Oriol Oms; Arnau Bolet; Guillem Orlandi-Oliveras; Josep Fortuny
Tetrapod ichnology is a powerful tool to reconstruct the faunal composition of Middle Triassic ecosystems. However, reconstructions based on a single palaeoenvironment provide an incomplete and impoverished picture of the actual palaeodiversity. In this paper, we analyse Middle Triassic tetrapod ichnoassociations from the detrital Muschelkalk facies of the Catalan Basin of northeast Spain, ranging
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Life history patterns of modern and fossil Mercenaria spp. from warm vs. cold climates Palaeogeogr. Palaeoclimatol. Palaeoecol. (IF 2.833) Pub Date : 2021-01-12 Kylie L. Palmer; David K. Moss; Donna Surge; Sage Turek
Recent work projects significant increases in sea surface temperature by the end of the 21st century. The biological consequences of such temperature increases are poorly understood. Study designs using a conservation paleobiology approach combined with sclerochronology methods can provide a powerful framework in which to assess these consequences. This study focuses on the ecological and economically
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Erratum to Palaeoecological context for the extinction of the Neanderthals: A small mammal study of Stratigraphic Unit V of the El Salt site, Alcoi, eastern Spain, Palaeogeography, Palaeoclimatology, Palaeoecology 530 (2019) 163–175 Palaeogeogr. Palaeoclimatol. Palaeoecol. (IF 2.833) Pub Date : 2021-01-12 Ana Fagoaga; César Laplana; Rafael Marquina-Blasco; Jorge Machado; M. Dolores Marin-Monfort; Vicente D. Crespo; Cristo M. Hernández; Carolina Mallol; Bertila Galván; Francisco J. Ruiz-Sánchez
El Salt is an important reference site for understanding the extinction of Neanderthal populations in the eastern Iberian Peninsula during MIS 3. In this paper, we describe the small mammal assemblage from Stratigraphic Unit V, the youngest unit with evidence of human presence, based on nearly 1300 specimens. A total of seven rodents (Microtus arvalis, Microtus duodecimcostatus, Microtus cabrerae,
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The impact of cyclical, multi-decadal to centennial climate variability on arsenic sequestration in lacustrine sediments Palaeogeogr. Palaeoclimatol. Palaeoecol. (IF 2.833) Pub Date : 2020-12-24 B.R.B. Gregory; R.T. Patterson; J.M. Galloway; E.G. Reinhardt
Examining paleoclimate-driven changes of elemental contaminants, such as Arsenic (As), increases the understanding of the mobility and fate of elements under a warming climate scenario. To characterize the variability in As sequestration in the sediments of a freshwater system in response to decadal- to centennial-scale climate oscillations, a freeze-core (CON01) was recovered from Control Lake, Northwest
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Quantifying proportions of different material sources to loess based on a grid search and Monte Carlo model: A case study of the Ili Valley, Central Asia Palaeogeogr. Palaeoclimatol. Palaeoecol. (IF 2.833) Pub Date : 2021-01-05 Mengxiu Zeng; Yougui Song; Huan Yang; Yue Li; Liangqing Cheng; Fengquan Li; Lidong Zhu; Zhangrong Wu; Nengjing Wang
The Ili Valley is among the main distribution areas of loess deposits in Xinjiang Province, Central Asia, while the provenance of Ili loess remains under debate. In this study, samples from near-surface loess, two types of topsoil and modern riverbed sediment were analyzed for their concentrations of major and trace geochemical elements to determine the relative proportions of different provenances
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In a pinch: Skeletal carbonate mineralogy of crabs (Arthropoda: Crustacea: Decapoda) Palaeogeogr. Palaeoclimatol. Palaeoecol. (IF 2.833) Pub Date : 2021-01-10 Ashleigh M. Fay; Abigail M. Smith
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Calcareous microfossils and paleoenvironmental changes across the Cretaceous-Paleogene (K-Pg) boundary at the Cerro Azul Section, Neuquén Basin, Argentina Palaeogeogr. Palaeoclimatol. Palaeoecol. (IF 2.833) Pub Date : 2021-01-08 Rodrigo M. Guerra; Andrea Concheyro; Karlos G.D. Kochhann; Marlone H.H. Bom; Daiane Ceolin; Telma Musso; Jairo F. Savian; Gerson Fauth
We investigate changes in calcareous nannofossil and ostracod communities, which reflect surface and bottom water conditions, respectively, across the Cretaceous-Paleogene transition (K-Pg) at the Cerro Azul Section, Jagüel Formation, Neuquén Basin, Argentina. The K-Pg transition at the Cerro Azul Section is characterized by calcareous nannofossil and ostracod turnovers, from assemblages dominated
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Trilobite biodiversity trends in the Devonian of North Africa Palaeogeogr. Palaeoclimatol. Palaeoecol. (IF 2.833) Pub Date : 2021-01-01 Valentin Bault; Catherine Crônier; Ninon Allaire; Claude Monnet
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Acritarch-based chronostratigraphic and radiometric calibration of the Cambrian volcanosedimentary Vallehondo and Playón formations in the Cambrian Ossa-Morena Rift, Spain Palaeogeogr. Palaeoclimatol. Palaeoecol. (IF 2.833) Pub Date : 2021-01-08 T. Palacios; S. Jensen; J.J. Álvaro; J.F. Santos Zalduegui; L. Eguiluz; F. Corfu; J.I. Gil Ibarguchi
The detailed record of diagnostic acritarchs from the volcanosedimentary Vallehondo and Playón formations, bracketed between Cambrian Stage 4 strata bearing the trilobite Serrodiscus and Guzhangian (Miaolingian) beds with Sao aff. Hirsuta, allows the establishment of a fine acritarch-based chronostratigraphy. Seven interval zones are defined by the first successive appearances of cosmopolitan index
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Strontium isotope evolution of Middle Permian seawater in the Sichuan Basin, South China: Possible causes and implications Palaeogeogr. Palaeoclimatol. Palaeoecol. (IF 2.833) Pub Date : 2021-01-02 Qian Li; Shuai Yang; Karem Azmy; Hongde Chen; Mingcai Hou; Zhengjiang Wang; Shenglin Xu; Di Yang; Xihua Zhang; Anqing Chen
Middle Permian 87Sr/86Sr variations are recorded by the marine carbonates in the Qianfo section and the Yundadi3 well in the Sichuan Basin of the Yangtze Platform, China. Petrographic and geochemical examinations of micritic carbonates confirmed the preservation of near-primary 87Sr/86Sr signatures that can be utilized to construct a reliable high-resolution Sr isotope profile of the equatorial eastern
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Soft tissue histology of insect larvae decayed in laboratory experiments using microbial mats: Taphonomic comparison with Cretaceous fossil insects from the exceptionally preserved biota of Araripe, Brazil Palaeogeogr. Palaeoclimatol. Palaeoecol. (IF 2.833) Pub Date : 2020-12-05 Miguel Iniesto; Paula Gutiérrez-Silva; Jaime J. Dias; Ismar S. Carvalho; Angela D. Buscalioni; Ana Isabel López-Archilla
Experimental taphonomy using microbial mats offers new insights into the mechanisms involved in the decay of organisms and their preservation as fossils. In this paper, the experimental decay products of soft-bodied insect larvae (the greater wax moth, Galleria mellonella, and the mealworm, Tenebrio molitor) in microbial mats have been described and compared with those of grylloid fossils derived from
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Responses of fluvial terrace formation to monsoon climate changes in the north-eastern Tibetan Plateau: Evidence from pollen and sedimentary records Palaeogeogr. Palaeoclimatol. Palaeoecol. (IF 2.833) Pub Date : 2020-12-29 Bingling Wang; Xianyan Wang; Shuangwen Yi; Lin Zhao; Huayu Lu
Climate factors, including precipitation and related vegetation cover, which are vital features of monsoon climates, differ across global/regional areas and are highly variable on a catchment scale. The correlation between fluvial processes and the phases of monsoon climate change are poorly understood in the north-eastern Tibetan Plateau (NETP), partially because direct monsoon climatic proxies from
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Variable redox conditions as an evolutionary driver? A multi-basin comparison of redox in the middle and later Cambrian oceans (Drumian-Paibian) Palaeogeogr. Palaeoclimatol. Palaeoecol. (IF 2.833) Pub Date : 2021-01-04 Matthew A. LeRoy; Benjamin C. Gill; Erik A. Sperling; N. Ryan McKenzie; Tae-Yoon S. Park
The middle to later Cambrian (Drumian-Jiangshanian Ages, 505–490 Ma) was a time of unique evolutionary dynamics that remain enigmatic. This interval records unusually high rates of faunal turnover that produced a “plateau” within the broader trajectory of rapidly increasing biodiversity seen across the Cambrian Explosion and Great Ordovician Biodiversification Event (GOBE). The oceans during this time
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Paleoclimate and paleoceanographic evolution during the Permian-Triassic transition (western Hubei area, South China) and their geological implications Palaeogeogr. Palaeoclimatol. Palaeoecol. (IF 2.833) Pub Date : 2020-12-07 Binsong Zheng; Chuanlong Mou; Xiuping Wang; Hongde Chen; Zhaohui Xiao
Severe global climate change is proposed to be the major cause of the Permian-Triassic boundary (PTB) mass extinction, while details about the response process are still in debate. In this study, we present geochemical and pyrite morphological data from an Upper Permian-Lower Triassic shale succession in the Western Hubei Trough, northern South China. The stratigraphic evolutions of paleoclimate, paleoredox
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Palaeovegetation variation in response to the late Oligocene-early Miocene East Asian summer monsoon in the Ying-Qiong Basin, South China Sea Palaeogeogr. Palaeoclimatol. Palaeoecol. (IF 2.833) Pub Date : 2021-01-02 Wenjing Ding; Dujie Hou; Jun Gan; Piao Wu; Mengting Zhang; Simon C. George
Late Oligocene-early Miocene palaeovegetation and palaeoclimate in the Ying-Qiong Basin, South China Sea were comprehensively reconstructed using higher plant-derived biomarkers, palynological records, clay minerals, and kerogen maceral compositions of shales. During the period from about 24.9–18.3 Ma, there are trends of higher relative abundances of plant-derived biomarkers in the younger sediments
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A 100 million year composite pollen record from New Zealand shows maximum angiosperm abundance delayed until Eocene Palaeogeogr. Palaeoclimatol. Palaeoecol. (IF 2.833) Pub Date : 2021-01-01 Joseph G. Prebble; Elizabeth M. Kennedy; Tammo Reichgelt; Christopher Clowes; Tom Womack; Dallas C. Mildenhall; J. Ian Raine; Erica M. Crouch
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Fauna, palaeoecology and ecotypes of the Early Cretaceous sediment hosted hydrothermal vent environment of Zengővárkony (Mecsek Mountains, Hungary) Palaeogeogr. Palaeoclimatol. Palaeoecol. (IF 2.833) Pub Date : 2020-12-31 László Bujtor; Jenő Nagy
The fossil biota of the upper Valanginian–lower Hauterivian sediment hosted vent (SHV) environment of Zengővárkony comprises 39 species, 55 genera and higher taxa representing seven phyla. Thirteen of these taxa are reported from Zengőrvárkony as new species or new subgenera/genera, and this high endemicity is linked to a unique palaeoenvironment. The palaeoenvironment is developed in an outer shelf
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Palaeoecology and palaeoenvironment of Mississippian coastal lakes and marshes during the early terrestrialisation of tetrapods Palaeogeogr. Palaeoclimatol. Palaeoecol. (IF 2.833) Pub Date : 2020-12-27 C.E. Bennett; T.I. Kearsey; S.J. Davies; M.J. Leng; D. Millward; T.R. Smithson; P.J. Brand; M.A.E. Browne; D.K. Carpenter; J.E.A. Marshall; H. Dulson; L. Curry
The Ballagan Formation of northern Britain provides an exceptional record of Early Mississippian ecosystems that developed as tetrapods emerged onto land. In this paper, we study two 500-metre sections of the formation near Berwick-upon-Tweed, which are characterised by abundant ferroan dolostone beds. Five lithofacies are identified: cemented siltstone and sandstone, homogeneous dolomicrite, mixed
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CLAMP-based palaeoclimatic analysis of the late Miocene (Tortonian) flora from La Cerdanya Basin of Catalonia, Spain, and an estimation of the palaeoaltitude of the eastern Pyrenees Palaeogeogr. Palaeoclimatol. Palaeoecol. (IF 2.833) Pub Date : 2020-12-29 Aixa Tosal; Oscar Verduzco; Carles Martín-Closas
We analyse the late Miocene (early Tortonian) climate of the La Cerdanya Basin (Catalonia, Spain) using the Climate Leaf Analysis Multivariate Program (CLAMP) based on an assemblage comprising twenty-nine dicot leaf taxa. Results show a mean annual temperature of 11.4 ± 2.1 °C. The coldest mean monthly temperature was 1.8 ± 3.4 °C while the warmest was 21.6 ± 2.5 °C. Growing season was 6.8 ± 1.1 months
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Sedimentary record of climate change across the Eocene/Oligocene transition from the Qaidam Basin, northeastern Tibetan Plateau Palaeogeogr. Palaeoclimatol. Palaeoecol. (IF 2.833) Pub Date : 2020-12-30 Yadong Wang; Sihua Yuan; Tao Zhang; Xiaoyan Liu; Yongjiang Liu; Yunfa Miao
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Holocene hydroclimate variations in the eastern Tianshan Mountains of northwestern China inferred from a palynological study Palaeogeogr. Palaeoclimatol. Palaeoecol. (IF 2.833) Pub Date : 2020-12-29 Yunpeng Yang; Zhaodong Feng; Dongliang Zhang; Bo Lan; Min Ran; Wei Wang; Aizhi Sun
We reconstruct Holocene vegetation dynamics and associated hydroclimate change in the Chaiwopu Basin of the eastern Tianshan Mountains, China. Our study is based on 160 palynological samples from a well-dated peat core. Palynological, assemblages and the associated biome scores show that from ~11.5 to ~9.5 cal. Kyr BP desert vegetation dominated and from ~9.5 to ~7.9 cal. Kyr BP steppe and wetland
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Modern analogs reveal the origin of Carboniferous coal balls Palaeogeogr. Palaeoclimatol. Palaeoecol. (IF 2.833) Pub Date : 2020-12-24 Gregory Retallack
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Magnetostratigraphy of the Hominin Sites and Paleolakes Drilling Project (HSPDP) Baringo-Tugen Hills-Barsemoi core (Kenya) Palaeogeogr. Palaeoclimatol. Palaeoecol. (IF 2.833) Pub Date : 2020-12-29 Mark J. Sier; Guillaume Dupont-Nivet; Cor Langereis; Alan L. Deino; John D. Kingston; Andrew S. Cohen
The principal objective of the Hominin Sites and Paleolakes Drilling project (HSPDP) is to study the relationship between climate and environmental change and the implications on human evolution in eastern Africa. For this purpose, HSPDP has recovered a 228 m core in the Chemeron Formation of the Baringo Basin (Kenya). The Chemeron Formation spans approximately 3.7 Myr, from around 1.6 to 5.3 Ma, and
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Bioturbation, heavy mineral concentration, and high gamma-ray activity in the Lower Cretaceous McMurray Formation, Canada Palaeogeogr. Palaeoclimatol. Palaeoecol. (IF 2.833) Pub Date : 2020-12-29 Milovan Fustic; Rajeev Nair; Andreas Wetzel; Raza Siddiqui; William Mathews; Raphael Wust; Manuel Bringue; Jagos Radovic
In the Lower Cretaceous McMurray Formation (Alberta, Canada), many intervals of intensely bioturbated (Bioturbation Index = 5–6) fine-grained sediments are characterized by high gamma-ray (GR) readings. Several methods, including sedimentary facies analysis, thin-section petrography, handheld spectral gamma-ray, portable X-ray fluorescence, X-ray diffraction, inductively coupled plasma-mass spectrometry
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Elemental and isotopic compositions of trench-slope black shales, Bohemian Massif, with implications for oceanic and atmospheric oxygenation in early Cambrian Palaeogeogr. Palaeoclimatol. Palaeoecol. (IF 2.833) Pub Date : 2020-12-27 Jan Pašava; Lukáš Ackerman; Jiří Žák; František Veselovský; Robert A. Creaser; Martin Svojtka; Béatrice Luais; Ondřej Pour; Ondřej Šebek; Jakub Trubač; Eva Vosáhlová; Damien Cividini
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Palaeoecological assemblages of the lower Cambrian Shuijingtuo Biota from the three Gorges area and implications for co-evolution of environments and life Palaeogeogr. Palaeoclimatol. Palaeoecol. (IF 2.833) Pub Date : 2020-12-26 Qiangfen Ma; Qinglai Feng; Yan Ye; Jun Shen
Abundant metazoans phyla made their first appearances in the fossil record during a relatively short time span in the Ediacaran-Cambrian interval (560–520 Ma) and rapidly expanded ecologically during the early Cambrian, leading to the establishment of metazoan-dominated ecosystems accompanied by widespread biomineralization. This unique evolutionary event was known as the ‘Cambrian Explosion’. Although
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Permanent closure of the Tethyan Seaway in the northwestern Iranian Plateau driven by cyclic sea-level fluctuations in the late Middle Miocene Palaeogeogr. Palaeoclimatol. Palaeoecol. (IF 2.833) Pub Date : 2020-12-24 Jimin Sun; Morteza Sheykh; Nahid Ahmadi; Mengmeng Cao; Zhiliang Zhang; Shengchen Tian; Jingeng Sha; Zhimin Jian; Brian F. Windley; Morteza Talebian
The opening and closure of marine gateways have been suggested to substantially affect ocean current circulations and global climatic changes. In the Miocene, the closure of the Tethyan Seaway, which connected the proto-Mediterranean Sea with the Indian and Atlantic Oceans, blocked thermohaline exchanges between them and possibly caused a major climate change in the Middle Miocene Climatic Transition
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Interevaporitic deposits of Las Minas Gypsum Unit: A record of Late Tortonian marine incursions and dolomite precipitation in Las Minas Basin (eastern Betic Cordillera, SE Spain) Palaeogeogr. Palaeoclimatol. Palaeoecol. (IF 2.833) Pub Date : 2020-12-16 Victoriano Pineda; Luis Gibert; Jesús M. Soria; Ariana Carrazana; Jordi Ibáñez-Insa; Mónica Sánchez-Román
The Las Minas Gypsum Unit consists of more than 100 m of alternations of gypsum, carbonates and marls in Las Minas Basin (Betic Cordillera). Although this unit has been previously described as lacustrine, a marine influence in the basin has been suggested. This study provides new geochemical and paleontological data supporting the marine influence during the interevaporitic episodes, allowing to refine
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Soil carbon degradation during the Paleocene-Eocene Thermal Maximum in the Piceance Basin, USA Palaeogeogr. Palaeoclimatol. Palaeoecol. (IF 2.833) Pub Date : 2020-12-18 Elizabeth H. Denis; Brady Z. Foreman; Katherine H. Freeman
The Paleocene-Eocene Thermal Maximum (PETM) warming event is marked by a negative carbon isotope excursion (CIE). The magnitude and shape of the CIE differs among carbon archives, but bulk organic carbon isotopes (δ13Corg) in terrestrial sections are often particularly variable and attenuated. Multiple lines of evidence from the Bighorn Basin, Wyoming, USA have revealed that extensive organic carbon
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Evidence of a significant marine plant diet in a Pleistocene caribou from Haida Gwaii, British Columbia, through compound-specific stable isotope analysis Palaeogeogr. Palaeoclimatol. Palaeoecol. (IF 2.833) Pub Date : 2020-12-14 Cara Kubiak; Rolf Mathewes; Vaughan Grimes; Geert Van Biesen; M.P. Richards
The Northwest Coast of Canada was likely an important location for glacial refugia in the Late Pleistocene. Recently, a caribou (Rangifer tarandus) antler fragment was reported from Graham Island dating prior to the Fraser Glaciation (MIS 3; 48,200–45,200 cal yr BP). The high carbon and nitrogen stable isotope values found in the bulk collagen samples of this caribou prompted further investigation
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The Monterey Event in the Mediterranean platform to basin transition: The Guadagnolo Formation (Miocene, Prenestini Mountains, Central Apennines) Palaeogeogr. Palaeoclimatol. Palaeoecol. (IF 2.833) Pub Date : 2020-12-24 Marco Brandano; Irene Cornacchia; Rita Catanzariti; Laura Tomassetti
The stratigraphic evolution of the Guadagnolo Fm, developed on the transition between the Latium-Abruzzi Platform and the Umbria Sabina Basin (central Apennines), was studied through facies and stable isotope analysis. Calcareous nannofossil biostratigraphy allows to identify the Burdigalian-Langhian boundary, constraining the sections to the lower to middle Miocene. This interval consists of marly
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Origin, early evolution and palaeoecology of Gymnopleura (Crustacea, Decapoda): Basal palaeocorystoid crabs from the Upper Jurassic–Lower Cretaceous of central Europe Palaeogeogr. Palaeoclimatol. Palaeoecol. (IF 2.833) Pub Date : 2020-12-24 Barry W.M. van Bakel; René H.B. Fraaije; John W.M. Jagt; Petr Skupien
Recent fieldwork has yielded new decapod crustacean material from Upper Jurassic–lowest Cretaceous bioclastic limestones at Kotouč quarry near Štramberk (Moravia, northeastern Czech Republic). Two specimens in this lot can be ascribed to the superfamily Palaeocorystoidea and represent the oldest gymnopleuran crabs known to date. A new genus and species, Moravacarcinus stramberkensis, are here erected
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A factor analysis approach to modelling the early diversification of terrestrial vegetation Palaeogeogr. Palaeoclimatol. Palaeoecol. (IF 2.833) Pub Date : 2020-12-17 E. Capel; C.J. Cleal; P. Gerrienne; T. Servais; B. Cascales-Miñana
Data from a new comprehensive macrofossil-based compilation of early plant genera are analyzed via a Q-mode factor analysis. This compilation ranges from the Silurian to the earliest Carboniferous and illustrates the key vegetation changes that took place during the configuration of early terrestrial ecosystems. Results reveal that four factors can be used to explain more than 90% of the variance in
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Geochemical characteristics of organic carbon and pyrite sulfur in Ordovician-Silurian transition shales in the Yangtze Platform, South China: Implications for the depositional environment Palaeogeogr. Palaeoclimatol. Palaeoecol. (IF 2.833) Pub Date : 2020-12-16 Zhaodong Xi; Shuheng Tang; Gary G. Lash; Bing Zhang; Donglin Lin
Global climate change and tectonism are principal causes of spatial and temporal differences in Ordovician-Silurian (OS) transition sedimentary environments of China's Upper Yangtze Platform. However, the relative significance of each of these drivers is not always obvious. This paper describes results of a geochemical study of a drill core section (Well X3) recovered from Xiang'e Submarine High in
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Geochemistry and molybdenum isotopes of the basal Datangpo Formation: Implications for ocean-redox conditions and organic matter accumulation during the Cryogenian interglaciation Palaeogeogr. Palaeoclimatol. Palaeoecol. (IF 2.833) Pub Date : 2020-12-15 Zhaozhao Tan; Wanglu Jia; Jie Li; Lu Yin; Susu Wang; Jinxiang Wu; Jianzhong Song; Ping'’an Peng
The basal Datangpo Formation in South China deposited in the Cryogenian interglacial period has gained increasing interest with the well development of organic-rich black shale and its hosted manganese (Mn) deposits (Mn carbonate), which contain important clues to the paleoclimate and ocean redox of this critical interval in Earth's history. The depositional environment of Mn deposits is still uncertain
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Behavioural imprint of the Ordovician Radiation: Evidence from Middle–Upper Ordovician deep-sea trace fossils in western Inner Mongolia, North China Palaeogeogr. Palaeoclimatol. Palaeoecol. (IF 2.833) Pub Date : 2020-12-15 Ruo-ying Fan; Rui-wen Zong; Yi-ming Gong
Trace fossils are unique evidence of the body plan and behavioural complexity of animals. Major radiation periods in the Phanerozoic were associated with not only changes in biodiversity, biomass, and ecosystems but also transformations in the relatively implicit, behavioural world. Here we report on a diverse ichnoassemblage from the Middle–Upper Ordovician deep-marine deposits of Inner Mongolia,
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Upper oligocene-miocene deposits of Eastern Amazonia: Implications for the collapse of Neogene carbonate platforms along the coast of northern Brazil Palaeogeogr. Palaeoclimatol. Palaeoecol. (IF 2.833) Pub Date : 2020-12-14 Afonso César Rodrigues Nogueira; Kamilla Borges Amorim; Ana Maria Góes; Werner Truckenbrodt; Setembrino Petri; Anna Andressa Evangelista Nogueira; José Bandeira; Joelson Lima Soares; Lohan Barbosa Baía; Manoel Imbiriba Júnior; Isaac Salém Bezerra; Camila C. Ribas; Joel Cracraft
Mixed carbonate-siliciclastic platforms developed in the onshore and offshore zones of several basins along the Amazonian coast starting in the Palaeocene. The shutdown of Miocene carbonate accumulation in distinct tectonic settings shows different evolutionary histories along the Eastern Amazonian coast. The shutdown has been attributed to the abundant siliciclastic fluvial inflow from the Andean
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Neoproterozoic marine chemostratigraphy, or eustatic sea level change? Palaeogeogr. Palaeoclimatol. Palaeoecol. (IF 2.833) Pub Date : 2020-12-01 Gregory J. Retallack; Adrian P. Broz; Larry S.-H. Lai; Kevin Gardner
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Cenozoic basin-filling evolution of the SW Tarim Basin and its implications for the uplift of western Kunlun: Insights from (seismo)stratigraphy Palaeogeogr. Palaeoclimatol. Palaeoecol. (IF 2.833) Pub Date : 2020-12-06 Chunyang Li; Hanlin Chen; Fengqi Zhang; Xiubin Lin; Xiaogan Cheng; Yong Li; Cai Chen; Liang Zhang; Jiangwei Shang; Di Sun; Huixian Lü; Ping Ren; Kaixuan An; Lei Wu; Shufeng Yang; Cong Wang; Yuqing Zhang; Hongxiang Wu; Fenfen Zhang
The western Kunlun Mountains and the adjacent southwestern Tarim Basin define the northwestern boundary of the intensely deformed Cenozoic Tibetan Plateau, and thus should bear important information on the growth processes of the NW Tibetan Plateau. In this study, the integration of a stratigraphic investigation of the Cenozoic Keliyang succession section and a seismostratigraphic analysis on the seismic
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Quantifying soil-respired CO2 on the Chinese Loess Plateau Palaeogeogr. Palaeoclimatol. Palaeoecol. (IF 2.833) Pub Date : 2020-12-04 Shunchuan Ji; Long Ma; Junsheng Nie; Shengyun Chen; Youbin Sun; Daniel O. Breecker
Soil respiration is one of the dominant fluxes of CO2 from terrestrial ecosystems to the atmosphere. Accurate quantification of soil respiration is essential for robust projection of future climate variation and for reliable estimation of paleoatmospheric CO2 levels using soil carbonates. Soil-respired CO2, which is the most uncertain factor in estimating atmospheric CO2 concentration, has been calculated
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Recognition of a Permian to Triassic foreland basin in the central Beishan Orogen, NW China: Provenance variations and their constraints on latest Palaeozoic orogeny Palaeogeogr. Palaeoclimatol. Palaeoecol. (IF 2.833) Pub Date : 2020-12-10 Shengdong Wang; Kexin Zhang; Fenning Chen; Jiaxuan Wang; Bowen Song; Jianxing Li; Wen Wang; Peng Dai
The Beishan Orogen, located in the southernmost Central Asian Orogenic Belt, is a key area for research on accretionary orogens. The formation of the Beishan Orogen is closely related to the evolution of the Paleo-Asian Ocean, but the closure time of a significant branch of the Paleo-Asian Ocean in the Beishan area, i.e., the Hongliuhe–Niujuanzi–Xichangjing (HNX) Ocean, remains controversial. This
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Oceanic water redox conditions of the region between Tethys and Panthalassa during the late Early Triassic Palaeogeogr. Palaeoclimatol. Palaeoecol. (IF 2.833) Pub Date : 2020-12-09 Kazuko Yoshizawa; Satoshi Takahashi; Shun Muto; Masayuki Ehiro; Takanobu Tsuihiji
Fossil evidences of a complex food-chain after the end-Permian mass extinction (EPME) event have been reported from the Osawa Formation, which consists of upper Olenekian (Spathian) shallow marine mudstone dominant strata in the South Kitakami Belt in Northeast Japan. It is an important material which records the paleoenvironment of the oceanic region between the eastern Tethys and Panthalassa. This
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Little Ice Age climate changes in Southwest China from a stalagmite δ18O record Palaeogeogr. Palaeoclimatol. Palaeoecol. (IF 2.833) Pub Date : 2020-12-08 Ting-Yong Li; Si-Ya Xiao; Chuan-Chou Shen; Jian Zhang; Chao-Jun Chen; Hai Cheng; Christoph Spötl; Ran Huang; Tao Wang; Jun-Yun Li; Yao Wu; Zi-Qi Liu; R. Lawrence Edwards; Tsai-Luen Yu
Climate change during the Little Ice Age (LIA) was characterized by globally widespread but spatiotemporally incoherent cooling with high regional variability. However, the onset, termination, internal structure, and underlying forcing mechanisms of the LIA remain unclear. Here we present a U-Th-dated stalagmite record with an average sampling resolution of 0.8 years and mean age uncertainty less than
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Fossil seed fern Lepidopteris ottonis from Sweden records increasing CO2 concentration during the end-Triassic extinction event Palaeogeogr. Palaeoclimatol. Palaeoecol. (IF 2.833) Pub Date : 2020-12-08 Miriam Slodownik; Vivi Vajda; Margret Steinthorsdottir
The end-Triassic event (ETE), a short global interval occurring at the end of the Triassic Period (~201.5 Ma), was characterized by climate change, environmental upheaval, as well as widespread extinctions in both the marine and terrestrial realms, associated with extensive perturbations of the carbon cycle, principally caused by Central Atlantic Magmatic Province volcanic emplacement in relation to
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Variations in deep water masses along the western margin of South Africa, spanning the last two glacial terminations Palaeogeogr. Palaeoclimatol. Palaeoecol. (IF 2.833) Pub Date : 2020-11-22 Eugene W. Bergh; Rebecca von Koslowski; John S. Compton
The neodymium isotope composition (εNd) of planktic foraminifera and the relative abundances and δ13C of the benthic foraminiferal species C. wuellerstorfi from two gravity cores, retrieved from the western margin of South Africa, provide a late Quaternary (MIS 6 to MIS 1) record of the variations in North Atlantic Deep Water (NADW) and Southern Component Water (SCW). The εNd records from cores at
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Landscape evolution in the Liangzhu area since the early Holocene: A comprehensive sedimentological approach Palaeogeogr. Palaeoclimatol. Palaeoecol. (IF 2.833) Pub Date : 2020-11-21 Guangjiu Ling; Chunmei Ma; Qing Yang; Zhujun Hu; Hongbo Zheng; Bin Liu; Ningyuan Wang; Minghui Chen; Ye Zhao
The Liangzhu culture (5300– 4300 cal yr BP) is considered to be the testification of the five thousand year history of Chinese civilization, and has thus attracted a great deal of attention from the archaeological community. However, the rise and fall of the Liangzhu culture, especially the cause of its vanishing, is still a topic of intense debate. Since the Liangzhu Ancient City area is a low-lying
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The first evidence of controlled use of fire by prehistoric humans during the Middle Paleolithic phase from the Indian subcontinent Palaeogeogr. Palaeoclimatol. Palaeoecol. (IF 2.833) Pub Date : 2020-11-27 Deepak Kumar Jha; Rahul Samrat; Prasanta Sanyal
The sedimentary deposits of the Lower Paleolithic to Neolithic sites situated in the Belan valley, north-central India offer a unique opportunity to understand the linkage between the prehistoric human environment and fire events. This is the first study to analyse macroscopic charcoal particles from 64 paleosols collected from six archaeological sites in the Belan valley to reconstruct fire activity
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Reconstructing climate variability during the last four millennia from trans-Himalaya (Ladakh-Karakoram, India) using multiple proxies Palaeogeogr. Palaeoclimatol. Palaeoecol. (IF 2.833) Pub Date : 2020-11-20 Binita Phartiyal; Randheer Singh; Debarati Nag; Anupam Sharma; Rajesh Agnihotri; Vandana Prasad; Tandong Yao; PingYao; Balasubramanian Karthick; Priyanka Joshi; Sanjay K.S. Gahlaud; Biswajeet Thakur
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Carbon and sulfur cycling during the mid-Ludfordian anomaly and the linkage with the late Silurian Lau/Kozlowskii Bioevent Palaeogeogr. Palaeoclimatol. Palaeoecol. (IF 2.833) Pub Date : 2020-12-01 Jiří Frýda; Oliver Lehnert; Barbora Frýdová; Juraj Farkaš; Michal Kubajko
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Dominance-diversity architecture of a mixed hygromorphic-to-xeromorphic flora from a botanically rich locality in western equatorial Pangea (lower Permian Emily Irish site, Texas, USA Palaeogeogr. Palaeoclimatol. Palaeoecol. (IF 2.833) Pub Date : 2020-11-28 Rebecca A. Koll; William A. DiMichele
Here we describe the Leonardian-age flora from “Emily Irish” (Russell Ranch), a small oxbow lake deposit, which is believed to be one of the most extensively collected, single-excavation floras of this age from any place in the world, including ca. 5200 hand specimens housed at the US National Museum of Natural History. The flora is dominated by a mixture of xeromorphic and meso-hygromorphic elements
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Paleoecologic and paleoenvironmental implications of a new trace fossil recording infaunal molting in Devonian marginal-marine settings Palaeogeogr. Palaeoclimatol. Palaeoecol. (IF 2.833) Pub Date : 2020-10-01 M. Gabriela Mángano; Laura Piñuela; Luis A. Buatois; Javier Ortega-Hernández; Francisco J. Rodríguez-Tovar; José Carlos García-Ramos
Luancaia igen. nov. and its two new ichnospecies, L. candasensis and L. elongata, from the Middle Devonian Naranco Formation of Asturias, northern Spain, record infaunal molting. The new ichnogenus has an elongate to oblong outline, and displays a distinctly trilobate appearance that includes an axial longitudinal lobe characterized by a distinctive ridge flanked by lateral lobes at each side. Well-defined
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The transition from climate-driven to human-driven agriculture during the Little Ice Age in Central Spain: Documentary and fluvial records evidence Palaeogeogr. Palaeoclimatol. Palaeoecol. (IF 2.833) Pub Date : 2020-11-25 Juan I. Santisteban; Alberto Celis; Rosa Mediavilla; Mª. José Gil-García; Blanca Ruiz-Zapata; Silvino Castaño
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An arid phase in the Internal Dinarides during the early to middle Miocene: Inferences from Mg-clays in the Pranjani Basin (Serbia) Palaeogeogr. Palaeoclimatol. Palaeoecol. (IF 2.833) Pub Date : 2020-11-24 N. Andrić-Tomašević; V. Simić; O. Mandic; D. Životić; M. Suárez; E. García-Romero
Lacustrine strata record long-term variations in climatic and tectonic perturbations during orogen evolution. Here we use the sedimentological record of the early to middle Miocene intramontane lacustrine Pranjani Basin (Serbia) to study tectonic and climatic variations during the evolution of the Dinaridic orogen. Our study focuses on a Mg-clay-bearing succession that belongs to the second depositional
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Dental microwear texture analysis on extant and extinct sharks: Ante- or post-mortem tooth wear? Palaeogeogr. Palaeoclimatol. Palaeoecol. (IF 2.833) Pub Date : 2020-11-24 Weber Katrin; E. Winkler Daniela; M. Kaiser Thomas; Žigaitė Živilė; Tütken Thomas
Sharks are apex-predators that play an important role in past and present aquatic food webs. However, their diet - especially in extinct species - is often not well constrained. Dental microwear texture analysis (DMTA) has been successfully applied to reconstruct diet and feeding behaviours of different aquatic and terrestrial vertebrates. However, unlike in mammals, food-to-tooth contact in sharks
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Ecometric estimation of present and past climate of North America using crown heights of rodents and lagomorphs Palaeogeogr. Palaeoclimatol. Palaeoecol. (IF 2.833) Pub Date : 2020-11-22 Julia A. Schap; Joshua X. Samuels; Andrew Joyner
Studies of large herbivorous mammal (ungulate) communities have revealed an association between increased tooth crown height (hypsodonty) and a shift to more arid environments over the Cenozoic. Ecometric analyses have also been used to examine the relationship between current climate conditions and crown height of these communities, and very successfully used to estimate past precipitation. Small
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Water depth variation and its impact on carbonate content and oxygen isotopes: A study from a satellite lake near Lake Qinghai over the past 7.6 kyr Palaeogeogr. Palaeoclimatol. Palaeoecol. (IF 2.833) Pub Date : 2020-11-22 Yuxin He; Xiangzhong Li; Yunning Cao; Jing Hu; Min Wang
The oxygen isotopic composition of sedimentary carbonate (δ18Ocarb) provides information on the regional water balance between precipitation and evaporation in a lacustrine system. A volume effect was proposed to explain the abnormally low δ18Ocarb values in Lake Qinghai on the northern Tibetan Plateau, under the conditions of high evaporation and low water levels, as observed during the early Holocene