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Nitrogen isotopes in tooth enamel record diet and trophic level enrichment: Results from a controlled feeding experiment Chem. Geol. (IF 3.362) Pub Date : 2020-12-30 Jennifer N. Leichliter; Tina Lüdecke; Alan D. Foreman; Nicolas N. Duprey; Daniela E. Winkler; Emma R. Kast; Hubert Vonhof; Daniel M. Sigman; Gerald H. Haug; Marcus Clauss; Thomas Tütken; Alfredo Martínez-García
Nitrogen isotope ratios (δ15N) are a well-established tool for investigating the dietary and trophic behavior of animals in terrestrial and marine food webs. To date, δ15N values in fossils have primarily been measured in collagen extracted from bone or dentin, which is susceptible to degradation and rarely preserved in deep time (>100,000 years). In contrast, tooth enamel organic matter is protected
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Quantification of mineral accessible surface area and flow-dependent fluid-mineral reactivity at the pore scale Chem. Geol. (IF 3.362) Pub Date : 2021-01-11 Jin Ma; Mehrdad Ahkami; Martin O. Saar; Xiang-Zhao Kong
Accessible surface areas (ASAs) of individual rock-forming minerals exert a fundamental control on the maximum mineral reactivity with formation fluids. Notably, ASA efficiency during fluid-rock reactions can vary by orders of magnitude, depending on the inflow fluid chemistry and the velocity field. Due to the lack of adequate quantification methods, determining the mineral-specific ASAs and their
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Signals of combined chromium–cadmium isotopes in basin waters of the Early Cambrian – Results from the Maoshi and Zhijin sections, Yangtze Platform, South China Chem. Geol. (IF 3.362) Pub Date : 2021-01-08 Robert Frei; Lingang Xu; Jesper Allan Frederiksen; Bernd Lehmann
The combination of authigenic chromium and cadmium stable isotopes in marine sedimentary archives enables reconstruction of the redox conditions and levels of primary productivity in past oceans and basins. The Ediacaran to Cambrian Nanhua Basin (Yangtze Platform, South China) and its sedimentary sequences have been studied intensively in the past with respect to investigating the effects of post-Snowball
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Water depth control on n-alkane distribution and organic carbon isotope in mid-latitude Asian lakes Chem. Geol. (IF 3.362) Pub Date : 2021-01-16 Jiawei Jiang; Bowen Meng; Hu Liu; Huanye Wang; Marina Kolpakova; Sergey Krivonogov; Mu Song; Aifeng Zhou; Weiguo Liu; Zhonghui Liu
The relative proportion of mid-chain to long chain n-alkane homologues and isotopic compositions of total organic carbon (Paq and δ13Corg) have been proposed as potential lake-level proxies since such features mainly come from submerged aquatic plants living within an optimum range of lake water depth. With limited dataset available, the applicability of both indices and their sensitivity to lake water
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The molecular regulatory mechanisms of the bacteria involved in Serpentine weathering coupled with carbonation Chem. Geol. (IF 3.362) Pub Date : 2021-01-16 Hailong Liu; Xuerong Liu; Xiaofang Li; Ziyu Fu; Bin Lian
Development of an effective biotechnological method of reducing the continuous emission of CO2 has caused wide public concern. Research on serpentine bio-weathering coupled with carbonation is a current focus of interest. To investigate the molecular mechanisms, Bacillus subtilis was cultured in the Mg2+-free medium with the addition of serpentine. Based on the composition of organic matter and the
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Serpentinization in the Archean and early Phanerozoic – Insights from chromium isotope and REY systematics of the MgCr hydroxycarbonate stichtite and associated host serpentinites Chem. Geol. (IF 3.362) Pub Date : 2021-01-16 Dennis Kraemer; Robert Frei; David M. Ernst; Michael Bau; Erik Melchiorre
Chromium isotopes have emerged as powerful redox proxies for past ocean-atmosphere systems as shifts in Cr isotope ratios towards heavier isotope compositions are indicative of Cr redox cycling on Earth. Knowledge of the Cr cycle in the critical zone and the fate of Cr during serpentinization and other hydrothermal processes is therefore important to assess the geologic interpretation of Cr isotopes
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Comparative geochemistry of flowback chemistry from the Utica/Point pleasant and marcellus formations Chem. Geol. (IF 3.362) Pub Date : 2021-01-16 SusanA. Welch; Julia M. Sheets; Rebecca A. Daly; Andrea Hanson; Shikha Sharma; Thomas Darrah; John Olesik; Anthony Lutton; Paula J. Mouser; Kelly C. Wrighton; Michael J. Wilkins; Tim Carr; David R. Cole
Flowback/Produced fluid samples were collected from several wells from two Utica/Point Pleasant (UPP) sites (UPPW and UPPS) in Ohio, and one Marcellus (Marcellus Shale Energy and Environment Laboratory (MSEEL)) site in West Virginia over a period of approximately two years. Although these formations have different ages, depositional environments, diagenetic histories, and geochemical and mineralogical
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Equilibrium Cu isotope fractionation in copper minerals: a first-principles study Chem. Geol. (IF 3.362) Pub Date : 2021-01-16 Shanqi Liu; Yongbing Li; Jie Liu; Zhiming Yang; Jianming Liu; Yaolin Shi
Copper is of importance in geosciences, biosciences, and industry. Its isotopes can be used to study planetary processes, trace Cu biogeochemical cycling, identify the type of Cu-bearing ore minerals, investigate the formation of ore deposits, and explore concealed ore-bodies. However, Cu isotope fractionation parameters of the majority of copper minerals remain poorly known, impeding the application
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Mobilisation of rare earth elements in shear zones: Insights from the Tabouchent granodioritic pluton (Jebilet massif, Variscan Belt, Morocco) Ore Geol. Rev. (IF 3.868) Pub Date : 2021-01-16 Abderrahim Essaifi; Alicja M. Lacinska; Michel Corsini; Kathryn M. Goodenough; Amal El Arabaoui; Rachid Zayane
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Preservation of Xiuwacu W-Mo deposit and its constraint on the uplifting history of Eastern Tibetan Plateau Ore Geol. Rev. (IF 3.868) Pub Date : 2021-01-16 Xiang-Fei Zhang; Wen-Chang Li; Rui Wang; Liang Zhang; Kun-Feng Qiu; Yu-Qin Wang
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Scalar- and vector-valued vulnerability analysis of shallow circular tunnel in soft soil Transp. Geotech. (IF 2.436) Pub Date : 2020-12-29 Zhong-Kai Huang; Dong-Mei Zhang
This paper presents a scalar- and vector-valued vulnerability analysis of shallow circular tunnel in soft soil. Numerous dynamic analyses were firstly performed to capture seismic response of the tunnel lining under transversal seismic shaking. Subsequently, a series of 15 intensity measures (IMs) are selected and tested to find the optimal IM used in the scalar-valued vulnerability analysis. The selected
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A novel approach for classification of soils based on laboratory tests using Adaboost, Tree and ANN modeling Transp. Geotech. (IF 2.436) Pub Date : 2020-12-31 Binh Thai Pham; Manh Duc Nguyen; Trung Nguyen-Thoi; Lanh Si Ho; Mohammadreza Koopialipoor; Nguyen Kim Quoc; Danial Jahed Armaghani; Hiep Van Le
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High mobility of the channelized ancient Linka rock avalanche within the Bangong - Nujiang suture zone, SE Tibetan Plateau Eng. Geol. (IF 4.779) Pub Date : 2021-01-16 Qingli Zeng; Jiewang Zhu; Liye Liao; Rongqiang Wei; Fengshan Ma; Xuping Ma; Bo Yuan
Large rock avalanches often result in loss of life and catastrophic damage to infrastructure far from their initial failure positions, predominantly due to their tremendous volumes, high velocities and long runouts. Studies of the surface morphologies and internal structures of rock avalanche deposits can reveal evidence of their movement and deposition mechanisms. Through field survey, satellite image
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A two-decade record of variations in suspended sediment in the Warta River, a lowland river in western Poland Geol. Q. (IF 1.167) Pub Date : 2020-11-26 Katarzyna Skolasińska; Bogumił Nowak; Katarzyna Bradtke
Fluctuations in suspended sediment concentration (SSC) has been investigated in the Warta River (western Poland), based on data obtained for the period 1961–1980 from three gauge stations located in upstream, middle-stream and downstream areas. Over the two decades, the SSC values demonstrated wide fluctuations and an overall increase at each gauge station. No significant correlation was generally
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Marine vs. terrestrial environments during Early Triassic deposition on the northeastern margin of the Central European Basin – a multidisciplinary study on the Middle Buntsandstein of the Bartoszyce IG 1 borehole, NE Poland Geol. Q. (IF 1.167) Pub Date : 2020-11-26 Anna Becker; Anna Fijałkowska-Mader; Marek Jasionowski
The Middle Buntsandstein Subgroup of the Lower Triassic of north-eastern Poland has been investigated in the context of possible marine ingressions into the Central European Basin. To better constrain these, palynofacies analysis and mineralogical analysis of mudstones were undertaken on samples taken from the Lidzbark and Malbork formations penetrated by the Bartoszyce IG 1 borehole, serving as stratotype
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The evolution of the Carpathian Foredeep Basin during the latest Badenian and Sarmatian (Middle Miocene): inferences from micropalaeontological data Geol. Q. (IF 1.167) Pub Date : 2020-11-26 Simina Dumitrita Dumitriu; Zofia Dubicka; Sergiu Loghin; Mihaela Carmen Melinte-Dobrinescu; Jolanta Paruch-Kulczycka
Seven Middle Miocene (Upper Badenian to Lower Sarmatian) sedimentary sections of the Central Paratethys, two from the Polish Carpathian Foredeep Basin (PCFB) and five from the Eastern Carpathian Foreland Basin (ECFB) of Romania and the Republic of Moldova have been analysed micropalaeontologically to better constrain the Badenian-Sarmatian Extinction Event, characterized by significant taxonomic impoverishment
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Sources of anthropogenic contamination of soil in the Upper Silesian Agglomeration (southern Poland) Geol. Q. (IF 1.167) Pub Date : 2020-11-26 Anna Pasieczna; Agnieszka Anna Konon; Weronika Nadłonek
This assessment of the environmental degradation by toxic chemical elements within the Upper Silesian Industrial Agglomeration of Poland encompasses the impact of mining for base metals and coal and non-ferrous metallurgy, as well as the discharge of industrial and municipal sewage causing strong degradation of the natural environment in the area over the years. The content of the following elements:
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Lower Kimmeridgian facies and sedimentary succession of a shallow-water coated-grain-dominated carbonate ramp of the northern peri-Tethyan shelf: an example from the Radomsko Folds (central Poland) Geol. Q. (IF 1.167) Pub Date : 2020-11-26 Piotr Olchowy; Marcin Krajewski
An Upper Jurassic succession is exposed in the active Rogaszyn Quarry (Kodrąb area) located in the Radomsko Folds structure (central Poland). Six facies types were distinguished, comprising oolitic, oncolitic, biodetrital and pelitic limestones as well as marls and marly clays. Typical lithologies are limestones with coated grains deposited in shallow-water, fore-shoal, shoal and lagoonal parts of
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Geochemistry of tetrahedrite group minerals and associated silver paragenesis in the Boguszów baryte deposit, Poland Geol. Q. (IF 1.167) Pub Date : 2020-11-26 Sławomir Mederski; Jaroslav Pršek; Żaneta Niemasz
Primary ore mineralization in the abandoned Boguszów baryte-polymetallic deposit, located in the Intra-Sudetic Depression, was studied by reflected light microscopy and electron microprobe. Ore minerals, occurring as veinlets, irregular aggregates and lenses in baryte veins are hosted by the Upper Carboniferous Chełmiec rhyodacite laccolith. They are dominated by galena, sphalerite (with Cd up to 0
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Geochemistry and geochronology of the Jawornik granitoids, Orlica–Śnieżnik Dome, Sudetes, Poland Geol. Q. (IF 1.167) Pub Date : 2020-11-26 Dawid Białek
The Jawornik granitoids intrude, in vein-like form, a sequence of a polymetamorphic metavolcanic and metapelitic rocks of the Orlica-Śnieżnik Dome, Sudetes, Poland. This paper provides whole-rock geochemical data, sensitive high-resolution ion microprobe (SHRIMP) U-Pb zircon geochronological data as well as 40Ar-39Ar age determinations to constrain the genetic and temporal relationships of the different
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Changes in the physico-chemical properties of topsoil in a landslide-affected area (western part of the Transylvanian Basin, Romania) Geol. Q. (IF 1.167) Pub Date : 2020-11-26 Ramona Bălc; Carmen Roba; Gheorghe Rosian; Dan Costin; Csaba Horvath; Octavia Raluca Zglobiu; Diana Chirtos
Landslides determine increases and decreases in specific soil compounds which is affecting soil fertility. The recovery of soil fertility is a long process and may be used as an indicator of the landslide age and can contribute to the management plan of the affected area. In order to add to data about soil properties affected by landslides, the current study focuses on a young and shallow landslide
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Fluvial response to environmental changes during MIS 4-3: a sedimentary record at the Brześnica site, central-western Poland Geol. Q. (IF 1.167) Pub Date : 2020-11-26 Damian Moskalewicz; Karol Tylmann; Piotr Paweł Woźniak; Natalia Kopyść; Piotr Moska
Fluvial deposits subjected to this study are exposed at the Brześnica site, in the south-western part of the Wielkopolska region in Poland, which was close to the ice-sheet limit during the Last Glacial Maximum (LGM). Sedimentological analyses, including lithofacies descriptions, palaeocurrent measurements, grain size and rounding analyses and heavy mineral compositions indicate that the fluvial deposits
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Temperature and humidity monitoring to identify ideal periods for liquefaction on Earth and Mars – data from the High Andes Geol. Q. (IF 1.167) Pub Date : 2020-11-26 Akos Kereszturi; Bernadett Pal; Akos Gyenis
During an almost two week-long field campaign in the Atacama Desert high altitude region of Ojos del Salado volcano, temperature (T) and relative humidity (RH) values were monitored on the surface and <1–5 cm sized rocks, focusing on the night-time values. The aim was to identify and evaluate potential temporal characteristics of daily T and RH changes, searching for ideal periods for deliquescence
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The biostratigraphic significance of the bears (Ursidae, Carnivora, Mammalia) from Silesia (southern Poland) and the neighbouring areas Geol. Q. (IF 1.167) Pub Date : 2020-11-26 Adrian Przemysław Marciszak; Grzegorz Lipecki
Revision of the Silesian bear fauna, based on material from 152 sites, mainly cave and karstic localities, and also archaeological and open-air sites, shows the presence of 13 forms and species. These records encompass the last 16.5 Ma and may be divided into five main morphophyletic groups. The oldest bears, represented by the genera Ballusia and Ursavus, are dated to 16.5–11 Ma, and belonged to the
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Fossil bear material from the oldest deposits in the Jasna Strzegowska cave (Silesia, southern Poland) Geol. Q. (IF 1.167) Pub Date : 2020-11-26 Adrian Przemysław Marciszak; Grzegorz Lipecki
Fossil bear material from the lowermost deposits of the Jasna Strzegowska cave is described and its taxonomic status assessed. Comparison with bear remains from other Early and early Middle Pleistocene localities of Eurasia shows the presence of two bear species: Ursus etruscus and U. deningeri, based on morphological and size characters of the teeth and postcranial bones. The teeth of U. deningeri
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First discovery of Mississippian trace fossils in the Świebodzice Unit from the Witoszów region (SW Poland) Geol. Q. (IF 1.167) Pub Date : 2020-11-26 Jolanta Muszer
Abundant and moderately diverse trace fossil assemblage have been discovered for the first time in mudstones of the Pogorzała Formation from the Witoszów region, SW Poland. Fifteen ichnospecies including fourteen ichnogenera are described. The ichnofauna is dominated by Dictyodora liebeana and contains numerous Palaeophycus tubularis, rarer Archaeonassa fossulata, Archaeonassa isp., Chondrites cf.
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Nature and origin of large-scale and intrasalt deformation within the Wieliczka salt mine, Poland Geol. Q. (IF 1.167) Pub Date : 2020-11-26 Mark G Rowan; Piotr Krzywiec; Krzysztof Bukowski; Jerzy Przybyło
The Wieliczka salt mine, near Kraków in southern Poland, is a world-famous historical and modern destination for both geoscientists and tourists. Despite numerous publications, there is still a lack of consensus on the nature and origin of the large-scale folds as well as whether the small-scale structures represent tectonic or soft-sediment deformation. In this preliminary work, we offer new ideas
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Hillslope erosion in a grassland environment: Calibration and evaluation of the SIBERIA landscape evolution model Earth Surf.Process. Land. (IF 3.694) Pub Date : 2020-12-28 G.R. Hancock; Abraham Gibson; T. Wells
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Depositional characteristics of a lacustrine mixed sediment system: a case study from the eastern Shijiutuo Uplift, offshore Bohai Bay Basin, eastern China J. Asian Earth Sci. (IF 3.059) Pub Date : 2021-01-16 Maosong Ye; Xinong Xie; Rudy Swennen; Changgui Xu; Xiaofeng Du; Xuebin Du
Mixed siliciclastic-carbonate sediments have been widely studied, especially those of marine origins. However, it is rarely investigated in continental settings. Boreholes from the Qinhuangdao-A (QHD-A) block in central Bohai Bay Basin sampled lacustrine mixed sediments during the Eocene Es1-2s period (32-38Ma), providing an opportunity to facilitate this aspect of research. Here, an integrated study
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Engineering properties of four different rocks after heat treatment Geomech. Geophys. Geo-energ. Geo-resour. (IF 2.224) Pub Date : 2021-01-16 Savani Vidana Pathiranagei, Ivan Gratchev, Ran Kong
The effect of high temperature on engineering properties of rocks has recently become an important topic for geotechnical engineering applications due to the development in geothermal energy extraction, underground coal gasification, disposal of nuclear waste and deep mining applications. This study aims to investigate the engineering properties of four rocks heated at high temperatures and to identify
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Middle Eocene carbonate platforms of the westernmost Tethys Sediment. Geol. (IF 2.728) Pub Date : 2021-01-17 Manuel Martín-Martín; Francesco Guerrera; Josep Tosquella; Mario Tramontana
A study of the paleoenvironmental evolution of the middle Eocene platforms recognized in the westernmost Tethys has been carried out in the well exposed middle Eocene succession from Sierra Espuña-Mula basin (Betic Cordillera, S Spain). Eight microfacies (Mf1 to Mf8) have been recognized, based mainly on fossil assemblages (principally larger benthic foraminifera), and rock texture and fabric. The
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Detrital zircon and rutile U‐Pb, Hf isotopes and Heavy mineral assemblages of Israeli Miocene sands: fingerprinting the Arabian provenance of the Levant Basin Res. (IF 3.304) Pub Date : 2021-01-17 Navot Morag; Dov Avigad; Axel Gerdes; Avishai Abbo
Isolated, Miocene continental basins scattered over Israel and Jordan represent the remnants of a continental‐wide fluvial system, which originated in Arabia and transported siliciclastic sediments westward to the deep Levant Basin. These basins define two geographically separated sedimentary provinces. The detrital zircon age spectra in both provinces are dominated by Neoproterozoic U‐Pb ages (550
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From widespread faulting to localized rifting: evidence from K‐Ar fault gouge dates from the Norwegian North Sea rift shoulder Basin Res. (IF 3.304) Pub Date : 2021-01-16 Haakon Fossen; Anna K. Ksienzyk; Atle Rotevatn; Marit Stokke Bauck; Klaus Wemmer
While seismic and stratigraphic well information put tight constraints on rift basin evolution, eroded rift shoulders commonly expose polydeformed prerift basement whose deformation history may be difficult to constrain. In this work we apply K‐Ar dating of fault gouge samples from 18 faults to explore the brittle deformation of the well‐exposed eastern rift margin to the northern North Sea rift. We
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Integrating stratigraphic modelling, inversion analysis, and shelf‐margin records to guide provenance analysis: An example from the Cretaceous Colville Basin, Arctic Alaska Basin Res. (IF 3.304) Pub Date : 2021-01-16 Jinyu Zhang; Peter Flaig; Marwan Wartes; Jennifer Aschoff; Mark Shuster
Delineating sediment source areas is critical for source‐to‐sink analysis and energy exploration because it can reveal sediment pathways and their associated reservoir rocks. We developed a methodology that integrates stratigraphic forward modelling and inversion analysis to provide a first‐order provenance estimate. By employing a large number of modelling runs, and then applying a neighborhood algorithm
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The Berriasian–Valanginian boundary in the Mediterranean Province of the Tethyan Realm: Ammonite and calcareous nannofossil biostratigraphy of the Vergol section (Montbrun-les-Bains, SE France), candidate for the Valanginian GSSP Cretac. Res. (IF 1.854) Pub Date : 2020-12-24 Samer Kenjo; Stéphane Reboulet; Emanuela Mattioli; Kayed Ma'louleh
The Vergol locality (Montbrun-les-Bains, South-East France), a candidate section for the Valanginian GSSP (Global Stratotype Section and Point), was studied in detail for ammonites and calcareous nannofossils. A bed-by-bed sampling and a quantitative approach were carried out on this expanded succession presenting a continuous record of calcareous-marl alternations covering the uppermost Berriasian
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Xenodens calminechari gen. et sp. nov., a bizarre mosasaurid (Mosasauridae, Squamata) with shark-like cutting teeth from the upper Maastrichtian of Morocco, North Africa Cretac. Res. (IF 1.854) Pub Date : 2021-01-16 Nicholas R. Longrich; Nathalie Bardet; Anne S. Schulp; Nour-Eddine Jalil
The mosasaurids (Mosasauridae) were a group of lizards that became highly specialized for marine life in the mid-Cretaceous. By the end of the Cretaceous, they had undergone an adaptive radiation, and showed a wide range of body sizes, locomotor styles, and diets. Their ranks included piscivores, apex predators, and durophages. Here, we report a new taxon, Xenodens calminechari gen. et sp. nov., from
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Bone Disease in CKD in Children Calcif. Tissue Int. (IF 3.423) Pub Date : 2021-01-16 Fernando Santos, Lucas Díaz-Anadón, Flor A Ordóñez, Dieter Haffner
This manuscript discusses mineral and bone disorders of chronic kidney disease (MBD-CKD) in pediatric patients with special emphasis on the underlying pathophysiology, the causes and clinical profile of growth retardation, the alterations in the growth plate, the strategies to optimize growth and the medical recommendations for prevention and treatment.
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High-Resolution Cone-Beam Computed Tomography is a Fast and Promising Technique to Quantify Bone Microstructure and Mechanics of the Distal Radius Calcif. Tissue Int. (IF 3.423) Pub Date : 2021-01-16 Karen Mys, Peter Varga, Filip Stockmans, Boyko Gueorguiev, Verena Neumann, Olivier Vanovermeire, Caroline E. Wyers, Joop P. W. van den Bergh, G. Harry van Lenthe
Obtaining high-resolution scans of bones and joints for clinical applications is challenging. HR-pQCT is considered the best technology to acquire high-resolution images of the peripheral skeleton in vivo, but a breakthrough for widespread clinical applications is still lacking. Recently, we showed on trapezia that CBCT is a promising alternative providing a larger FOV at a shorter scanning time. The
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Evidence for deep gas loss in open volcanic systems Bull. Volcanol. (IF 2.032) Pub Date : 2021-01-16 Marielle Collombet, Alain Burgisser, Mathieu Colombier, Elizabeth Gaunt
Previous studies of Vulcanian eruptive products have shown that the respective volcanic conduits were filled for the most part with low-porosity magma (i.e., < 10 vol%) prior to eruption. Comparison with the theoretical porosity distribution expected from closed-system degassing suggests that gas loss must have taken place at depth within the magmatic column (between 3 and 5 km). At such high pressures
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Depositional architecture and evolution of basin-floor fan systems since the Late Miocene in the Northwest Sub-Basin, South China Sea Mar. Petrol. Geol. (IF 3.79) Pub Date : 2021-01-06 Hui Chen; Dorrik A.V. Stow; Xinong Xie; Jianye Ren; Kainan Mao; Ya Gao; Beichen Chen; Wenyan Zhang; Thomas Vandorpe; David Van Rooij
The sediment budget of the Northwest Sub-basin, South China Sea since the Late Miocene (11.6 Ma, average thickness > 1000 m) accounts for more than two-thirds of the total infill since the initial ocean spreading of the sub-basin (32 Ma). The sediment sources and architectural pattern of these deposits, however, are poorly known. Using high-resolution 2D reflection seismic data with age constraint
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Lacustrine to fluvial depositional systems: The depositional evolution of an intracontinental depression and controlling factors, Lower Cretaceous, northern Tarim Basin, northwest China Mar. Petrol. Geol. (IF 3.79) Pub Date : 2021-01-09 Zhiyuan Zhang; Changsong Lin; Yongfu Liu; Jingyan Liu; Haitao Zhao; Hao Li; Qi Sun; Hui Xia; Ming Ma; Ying Liang
The Lower Cretaceous (Baxigai and Bashijiqike Formations) of the northern Tarim basin contains over 1000 m of siliciclastic fluvial-deltaic deposits and is of great significance for oil and gas exploration. Based on integrated cores, outcrops, well-logs, and seismic data, the sequence stratigraphy, depositional architecture and sedimentary infilling process from a shallow lake basin to a braided fluvial-dominated
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Provenance analysis of Late Triassic turbidites in the eastern Songpan–Ganzi Flysch Complex: Sedimentary record of tectonic evolution of the eastern Paleo-Tethys Ocean Mar. Petrol. Geol. (IF 3.79) Pub Date : 2021-01-16 Da-Xing Gong; Chi-Hua Wu; Hao Zou; Xiong Zhou; Yu Zhou; Hong-Qi Tan; Xiang-Yuan Yue
The Xikang Group represents the main stratigraphic sequence of the Songpan–Ganzi complex (SGC), a flysch basin with a wide distribution and monotonous lithology. Strong tectonic deformation and accumulation of folds have led to destruction of the original sedimentary sequence and sedimentary structure of the strata, such that there exists no reasonable sedimentary model that can explain the massive
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Asymmetrical wave-dominated siliciclastic shorelines with evidence of along-strike variability of sedimentary processes: A revised interpretation for the Toarcian Marrat red beds, central Arabia Mar. Petrol. Geol. (IF 3.79) Pub Date : 2021-01-16 Abdulkarim Al-Hussaini; Mahmoud Alnazghah; Khalid Al-Ramadan; Mohammed Fallatah; Camilo Polo
Marine siliciclastic red beds are common in the geological record; however, distinguishing them from continental red beds can be challenging without detailed sedimentological and stratigraphic analyses. Owing to the common tendency in the geological literature to relate the reddish color to the oxidization processes within the vadose zone, siliciclastic red beds of marine genesis can be misinterpreted
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Changes in depositional paleoenvironment of black shales in the Permian Irati Formation (Paraná Basin, Brazil): geochemical evidence and aromatic biomarkers Mar. Petrol. Geol. (IF 3.79) Pub Date : 2021-01-16 Caroline Adolphsson do Nascimento; Eliane Soares de Souza; Laercio Lopes Martins; Hélio Jorge Portugal Severiano Ribeiro; Victor Hugo Santos; René Rodrigues
Physicochemical changes that occurred during deposition of Irati black shales were investigated via outcrop samples collected in the northeastern and central-eastern Paraná Basin. Various traditional geochemical indicators were used, in addition to newly detected biomarkers: C32 lanostane, simonellite, sempervirane, and C32-C35 benzohopanes. Bulk geochemistry parameters, mineralogy, and conventional
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Digital filters applications on aeromagnetic data for identification of hidden objects Bull. Eng. Geol. Environ. (IF 3.041) Pub Date : 2021-01-16 M. A. Fkirin, M. A. S. Youssef, M. F. El-Deery
The hidden objects are located, as sixteen objects (anomalies) on the reduction to magnetic pole data (RTP). The follow-up and identification of these objects by applying several digital filters, as upwarding continuation at different level, then the horizontal derivative (HD) and vertical derivative (VD). Accordingly, the edge detection filter techniques are dependent on the tilt derivative (horizontal
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An efficient procedure for optimization design of anti-seepage curtains: a case study Bull. Eng. Geol. Environ. (IF 3.041) Pub Date : 2021-01-16 Jinmeng Yang, Lanhao Zhao, Zhenzhong Shen, Lei Gan, Liqun Xu
In large-scale hydropower projects, the anti-seepage curtain is an important measure to reduce the leakage of reservoirs and ensure the stability of foundation rocks. In this study, an efficient procedure for the optimization design of an anti-seepage curtain was proposed given the drawback of the time-consuming and low efficiency in optimizing multiple parameters of the anti-seepage curtain. This
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The depositional signature of high‐aggradation chute‐and‐pool bedforms: The build‐and‐fill structure Sedimentology (IF 3.405) Pub Date : 2021-01-16 Arnoud Slootman; Age J. Vellinga; Andrea Moscariello; Matthieu J.B. Cartigny
Chutes‐and‐pools are hybrid bedforms that occur in upper‐flow‐regime conditions, populating the stability field between antidunes and cyclic steps. Chutes‐and‐pools consist of a superimposition of a train of antidunes on a longer‐wavelength cyclic‐step instability. The presence of a hydraulic jump is more persistent in chutes‐and‐pools than the bores occasionally seen on breaking‐wave antidunes, yet
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Modern coastal tempestite deposition by a non‐local storm: Swell‐generated transport of sand and boulders on Eleuthera, The Bahamas Sedimentology (IF 3.405) Pub Date : 2021-01-16 Kat Wilson; David Mohrig
This paper presents an analysis of the transport conditions of a storm deposit (i.e. tempestite) produced by a non‐local cyclone. Observations and analysis of ‘sand to boulder’ transport and washover deposition in March 2018 at Gaulding Cay Quarry, Eleuthera, The Bahamas, confirm that swell waves can cause coastal change and affect the depositional record >1000 km from the storm centre. Drone video
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Petrogenesis of the post-collisional rare-metal-bearing Ad-Dayheen granite intrusion, Central Arabian Shield Lithos (IF 3.39) Pub Date : 2020-12-27 Bassam A. Abuamarah; Mokhles K. Azer; Paul D. Asimow; Qingshang Shi
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Prolonged magmatism and growth of the Iran-Anatolia Cadomian continental arc segment in Northern Gondwana Lithos (IF 3.39) Pub Date : 2020-12-19 H. Shafaii Moghadam; Q.L. Li; W.L. Griffin; R.J. Stern; J.F. Santos; F. Lucci; M. Beyarslan; G. Ghorbani; A. Ravankhah; R. Tilhac; S.Y. O'Reilly
Much of the crust of Iran and Anatolia, including their oldest exposed rocks, formed during an episode of intense convergent margin (arc) magmatism as a result of subduction of oceanic lithosphere beneath northern Gondwana from ca 620 Ma to ca 500 Ma, the Cadomian crust-forming event. Most igneous rocks formed between ca 570 and 525 Ma. Cadomian crust is well-known from western and southern Europe
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Nature and evolution of lithospheric mantle beneath the western North China Craton: Constraints from peridotite and pyroxenite xenoliths in the Sanyitang basalts Lithos (IF 3.39) Pub Date : 2021-01-17 Xinmiao Zhao; Hui Wang; Zhihan Li; Noreen J. Evans; Jifeng Ying; Yueheng Yang; Hongfu Zhang
This paper reports petrology, major and trace element abundances in bulk-rocks and minerals, and clinopyroxene Sr-Nd-Hf compositions from a suite of mantle xenoliths entrained in Cenozoic Sanyitang alkali basalts, Jining County in the Inner Mongolia Suture Zone. The aim is to constrain the nature and evolution of the lithospheric mantle beneath the western North China Craton. The Sanyitang mantle xenoliths
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Initiation of continental breakup documented in evolution of the magma plumbing system of the ca. 925 Ma Dashigou large igneous province, North China Lithos (IF 3.39) Pub Date : 2021-01-17 Xiangdong Su; Peng Peng; Stephen Foley; Wilson Teixeira; Ming-Guo Zhai
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High-temperature melting of different crustal levels in the inner zone of the Emeishan large igneous province: Constraints from the Permian ferrosyenite and granite from the Panxi region Lithos (IF 3.39) Pub Date : 2021-01-16 Zhang Zezhong; Qin Jiangfeng; Lai Shaocong; Long Xiaoping; Ju Yinjuan; Wang Xingying; Zhu Yu; Zhang Fangyi
The Late-Permian Emeishan mantle plume event caused large-scale flood basalts and related mafic-ultramafic layered mafic intrusions in the inner zone of the Emeishan large igneous province (ELIP). However, the related crustal magma response of this mantle plume event in the inner zone of the ELIP remains poorly understood. In this contribution, we report contemporaneous (~259 Ma) ferrosyenite and A-type
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Geochronology and petrogenesis of the Yuanbaoshan leucogranite in southeast Inner Mongolia: Implications for the collision between the Sino-Korean and Siberian paleo-plates Lithos (IF 3.39) Pub Date : 2021-01-16 Shuo Zhao; Jianfeng Liu; Yuting Zhang; Jin Zhang; Wenliang Xu; Jinyi Li
Leucogranite, typically as an important signature of continent-continent collision, records valuable information on evolution of continental crust and provides an insight into the geodynamic processes during continental collision. Here, we present zircon U-Pb and muscovite Ar-Ar dating, major and trace elements, and Sr-Nd isotope data for the Yuanbaoshan leucogranites in southeast Inner Mongolia, with
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Response surface guided adaptive slope reliability analysis in spatially varying soils Comput. Geotech. (IF 3.818) Pub Date : 2021-01-16 Zheng Zhou; Dian-Qing Li; Te Xiao; Zi-Jun Cao; Wenqi Du
Response surface methods are widely used in slope reliability analysis due to the high efficiency. However, they are often criticized of the curse of high dimensionality, problem-dependent accuracy, and mechanism-free interpretation. To address these issues, this study proposes a response surface-guided adaptive slope reliability analysis method for slopes in spatially varying soils. A sparse quadratic
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Time-dependent load transfer behavior of grouted anchors in laterite Comput. Geotech. (IF 3.818) Pub Date : 2021-01-16 Changfu Chen; Shimin Zhu; Genbao Zhang; Fengshan Mao; Huan Cai
The load transfer behavior of grouted anchors is time-dependent under long-term (creep) load. This study aims at investigating the time-dependent behavior of grouted anchors in laterite by both physical model test and theoretical simulation. A laboratory creep pullout model test of full-length-bond grouted anchor in laterite was carried out using a special developed apparatus. The creep pullout load–displacement
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On numerical simulation of vertical drains using linear 1-dimensional drain elements Comput. Geotech. (IF 3.818) Pub Date : 2021-01-16 Mojtaba E. Kan; Buddhima Indraratna; Cholachat Rujikiatkamjorn
This Technical Note addresses an issue of vertical drains simulation using linear drain elements for radial consolidation. A new method is proposed which enables the application of linear drain elements while maintaining acceptable accuracy. The robustness of the proposed method is examined satisfactorily through the simulation of a unit cell representing a single drain and the application of multi-drain
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Reliability and failure mechanism of a slope with non-stationarity and rotated transverse anisotropy in undrained soil strength Comput. Geotech. (IF 3.818) Pub Date : 2021-01-16 L. Huang; Y.M. Cheng; L. Li; S. Yu
Natural soils often exhibit rotated transverse anisotropy due to various geological processes (e.g., tectonic movement, filling and soil deposition), and the trend of soil strength usually changes with depth. This study combines rotated transverse anisotropy with non-stationary random field (RF) to investigate the reliability and failure mechanism of a slope under undrained conditions. Two scenarios
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Technological transition and complexity reflected in bronze and brass objects from the medieval site in the Aral Sea region Archaeol. Anthropol. Sci. (IF 2.063) Pub Date : 2021-01-16 Jang-Sik Park, Dmitriy Voyakin
The medieval period in the region near the Aral Sea must have been the era of significant sociopolitical changes and notable transitions in material culture. This prediction was tested with a metal assemblage consisting of numerous bronze and brass objects, mostly small items for personal use, excavated from the medieval (ca. 800–1000 AD) site near the Aral Sea in Kazakhstan. A technological transition
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A new investigative strategy to diagnose β-thalassemia syndrome in past human populations Archaeol. Anthropol. Sci. (IF 2.063) Pub Date : 2021-01-16 Filippo Scianò, Barbara Bramanti, Emanuela Gualdi-Russo
The study of thalassaemia syndromes in archeological human remains is of growing interest in the field of paleopathology. However, a definitive diagnosis of the disease in skeletonized individuals remains difficult. Several non-specific bone lesions have been suggested as the most likely evidence of β-thalassaemia syndrome. In particular, skull lesions have been considered by several scholars as the
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