Article
Geochemistry & Geophysics
Nicolas Tribovillard, Viviane Bout-Roumazeilles, Marion Delattre, Sandra Ventalon, Romain Abraham, Oussenatou Nzie
Summary: The study conducted at Cap Blanc Nez in France revealed that the Lower Cenomanian chalk is rich in glauconite, indicating a potential autochthonous origin with long authigenic formation time. The geochemical analysis showed a consistent composition of major and trace elements in the samples, with elevated K2O content suggesting an evolved nature of the glauconites. The presence of germanium and the absence of molybdenum in the glauconites indicate a slightly reducing deposition environment, which may have hindered organic matter accumulation despite the favorable conditions.
Article
Geography, Physical
Renato Posenato, Gaia Crippa, Niels J. de Winter, Gianluca Frijia, Pim Kaskes
Summary: This study describes the microstructures of lithiotid bivalves during the Early Jurassic and investigates their seasonal growth patterns and paleoenvironmental significance. The unique adaptation of lithiotid bivalves allowed them to thrive in tropical shallow marine environments.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2022)
Article
Geosciences, Multidisciplinary
Nagham Omar, Tom Mccann, Ali I. Al-Juboury, Sven Oliver Franz, Giovanni Zanoni, Harry Rowe
Summary: The findings of this study are important because they provide a comprehensive analysis of various paleoenvironmental proxies in NE Iraq during the Early Jurassic-Early Cretaceous period. Petrographic and microfacies analyses suggest that the sediments were deposited in tidal flat, restricted lagoons, and shallow marine to bathyal environments. The study also reveals a shift in climate and redox conditions, likely influenced by tectonic activity in the region.
MARINE AND PETROLEUM GEOLOGY
(2023)
Article
Multidisciplinary Sciences
Paulina S. Naetscher, Guillaume Dera, Carl J. Reddin, Patricia Rita, Kenneth De Baets
Summary: One common response of marine organisms to rapid warming is a reduction in body size, which may be due to changes in resource acquisition leading to morphological changes; during the PToB warming event, there were significant morphological changes in a marine predator, possibly as a result of indirect consequences like resource scarcity or hypercalcification.
SCIENTIFIC REPORTS
(2021)
Article
Oceanography
M. Baloza, S. Henkel, W. Geibert, S. Kasten, M. Holtappels
Summary: This study investigates the benthic carbon sedimentation, remineralization, and iron cycling in the sediment cores retrieved from the eastern shelf of the Antarctic Peninsula. The results show that marginal sea ice conditions have a positive influence on sedimentation and remineralization rates. The study also reveals a significant covariation between dissolved iron and phosphate concentrations, indicating a tightly coupled phosphate-iron recycling. These findings suggest a clear bentho-pelagic coupling that could be affected by future climate change.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2022)
Article
Geosciences, Multidisciplinary
Hideharu Kuwahara, Ryoichi Nakada, Shintaro Kadoya, Takashi Yoshino, Tetsuo Irifune
Summary: The formation of the early Earth's mantle is believed to have been highly reducing, but geological evidence suggests it was oxidized. Experiments melting peridotite under deep mantle conditions show that the Fe3+ content of Earth's magma ocean was significantly higher than that of the present upper mantle, explaining the evidence for a highly oxidized Hadean mantle. This oxidation likely ended with the cessation of huge impacts, and the reduction in Fe3+ content and oxidation state of the upper mantle could be attributed to accretion of reduced materials by small impactors during the late Hadean and early Archaean eons.
Article
Geosciences, Multidisciplinary
Lewis Whiting, Peter D. W. Haughton, Patrick M. Shannon
Summary: Hyperextended basins are increasingly recognized as aborted basins created during continental break-up. This study of the Porcupine Basin in offshore west of Ireland reveals multiple rift segments with distinctive geometries and strain histories. The transition from hyperextension to post-rift subsidence in this basin is marked by unconformity-bounded marine sequences. Hyperextension may have left the basin susceptible to intra-plate stress changes, resulting in several unconformities within the post-rift fill.
Article
Physics, Fluids & Plasmas
Simone Pigolotti
Summary: The study investigates the fluctuation of cell division times in microbial populations and finds that population growth is significantly impacted. Depending on whether fluctuations are correlated among different cells, either the Euler-Lotka equation or a similar equation that accounts for correlations is used to predict population growth rates.
Article
Geochemistry & Geophysics
Rachel Y. Sheppard, Ralph E. Milliken, James M. Russell, Elizabeth C. Sklute, M. Darby Dyar, Hendrik Vogel, Martin Melles, Satria Bijaksana, Ascelina K. M. Hasberg, Marina A. Morlock
Summary: Researchers analyzed sediment cores from Lake Towuti in Indonesia and found that nanophase iron-rich sediments can provide insights into sediment patterns and diagenesis over geological time. The cores were divided into three zones with different mineral dominance, likely influenced by structural basin changes and deep burial of reactive iron.
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
(2021)
Article
Geosciences, Multidisciplinary
Wei Yuan, Guangdi Liu, Ashley Bulseco, Liming Xu, Xiaoxing Zhou
Summary: The enrichment of uranium in the organic-rich shale of Chang 7 is mainly controlled by redox conditions, U sources, and sedimentation rate; organic matter plays a more significant role in U enrichment than previously thought.
JOURNAL OF ASIAN EARTH SCIENCES
(2021)
Article
Geosciences, Multidisciplinary
Ziyi Liu, Dongxia Chen, Wenzhi Lei, Yang Liu, Guangjie Xie, Wei Dang, Xiuxiang Lv, Sha Li, Siyu Yuan
Summary: This study examines the factors controlling organic matter (OM) enrichment in lacustrine fine-grained rocks of the Jurassic Da'anzhai Member in the central Sichuan Basin. The results suggest that OM accumulation is mainly controlled by clastic input and sedimentation rate. The study also highlights the potential of siliceous shale as a lithology for unconventional hydrocarbon production in this region.
JOURNAL OF ASIAN EARTH SCIENCES
(2022)
Article
Pharmacology & Pharmacy
William C. Smith, Jungeun Bae, Ying Zhang, Bin Qin, Yan Wang, Darby Kozak, Muhammad Ashraf, Xiaoming Xu
Summary: Variation in injection method can alter the particle state and dissolution rate of triamcinolone acetonide suspensions, potentially impacting drug bioavailability. Study also shows that deflocculated particles dissolve significantly faster than flocculated particles, highlighting the importance of shear-induced changes during injection on drug dissolution and bioavailability.
INTERNATIONAL JOURNAL OF PHARMACEUTICS
(2021)
Article
Geology
Xiujian Ding, Tianze Gao, Xianzhang Yang, Zhenping Xu, Changchao Chen, Keyu Liu, Xueqi Zhang
Summary: The Tarim Basin is a crucial oil and gas basin in western China, and the paleoclimate of the Jurassic Period and the enrichment of organic matter in coal-measure source rocks in this basin have been understudied. This research reconstructs the Jurassic paleoclimate and its impact on organic matter enrichment by investigating samples from the eastern Kuqa Depression. The study finds that the degree of chemical weathering and paleoclimatic changes indicate a warm and humid climate transitioning to hot and dry during the Jurassic Period. The presence of a relatively hot and dry climate is conducive to the enrichment of organic matter in coal-measure source rocks when the overall climate is warm and humid.
JOURNAL OF GEOLOGY
(2023)
Article
Geosciences, Multidisciplinary
Arnaud Gallois, Daniel Bosence, Peter Burgess
Summary: This study utilizes seismic and borehole data, coupled with outcrop logging and correlations, to establish a new tectono-sedimentary model demonstrating the control of extensional faults and relay ramps on the distribution of lacustrine carbonate facies.
Review
Materials Science, Multidisciplinary
Sung Bae Park
Summary: Heterogeneous nucleation models in solidification have been developed over decades, divided into three categories: spherical cap nucleus model, free growth model, and constitutional supercooling model. These models exhibit uncertainty in describing the kinetics of heterogenous nucleation and are influenced by the crystal growth rate. It is crucial to approximate the solute flux at the solid-liquid interface for predicting grain size in practical applications.
PROGRESS IN MATERIALS SCIENCE
(2022)
Article
Geosciences, Multidisciplinary
Jose M. Castro, Pedro A. Ruiz-Ortiz, Gines A. de Gea, Roque Aguado, Ian Jarvis, Helmut Weissert, Jose M. Molina, Luis M. Nieto, Richard D. Pancost, Maria L. Quijano, Matias Reolid, Peter W. Skelton, Carmina Lopez-Rodriguez, Rafael Martinez-Rodriguez
Summary: This study presents a high-resolution carbonate C-isotope stratigraphy for the Aptian in the Cau core (Spain) and focuses on the early Aptian Oceanic Anoxic Event (OAE 1a). It reveals a record of pulses of volcanism and methane emissions through sharp delta C-13(carb) negative spikes. The C-isotope profile across OAE 1a perfectly records the defined segments worldwide and proposes the Cau core as a new reference section for the Aptian.
PALEOCEANOGRAPHY AND PALEOCLIMATOLOGY
(2021)
Article
Geology
Matias Reolid, Francisco J. Cardenal, Jesus Reolid
Summary: The aim of this study is to obtain diverse morphometric data from digitized 3D models of theropods from eight representative families, providing information on major evolutionary trends. Additionally, using photogrammetric 3D models, morphometric information that cannot be obtained from bone studies can be acquired, such as the surface/volume ratio. This study contributes to characterizing the metabolism of extinct taxa and highlights differences in skull size and metabolic rates between primitive forms and large theropods across different geological periods.
JOURNAL OF IBERIAN GEOLOGY
(2021)
Article
Geography, Physical
Wolfgang Ruebsam, Matias Reolid, Emanuela Mattioli, Lorenz Schwark
Summary: During the early Toarcian period, global environmental changes led to the expansion of oxygen-deficient conditions around the world, promoting the occurrence of the Toarcian Oceanic Anoxic Event. Higher-level global factors controlled temperature fluctuations, sea level evolution, oceanic circulation patterns, marine primary productivity, and stable carbon isotope excursions, while lower-level factors operated on individual basin bathymetry and paleogeography, regulating local to regional organic matter accumulation.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2022)
Article
Paleontology
Luca Pandolfi, Joaquin Sendra, Matias Reolid, Lorenzo Rook
Summary: This study investigates a fragmentary mandible from the early Pliocene of the Vera Basin to clarify its taxonomic position and assigns it to Pliorhinus megarhinus. Morphometrical comparison reveals differences between P. megarhinus and other species, providing new insights into the Pliocene Spanish rhinocerotine record.
Article
Geochemistry & Geophysics
Luis M. Nieto, Jose Miguel Molina, Pedro Alejandro Ruiz-Ortiz, Jose Manuel Castro, Matias Reolid, Gines A. de Gea
Summary: This article describes an extensional phase during the Aptian-Albian transition in the Prebetic region, which led to the formation of shallow carbonate platforms. The presence of palustrine sediments between two shallow carbonate platforms is described for the first time. These findings are significant for understanding the geological history and changes.
Article
Geosciences, Multidisciplinary
Mahmoud Sharafi, Matias Reolid, Aram Bayet-Goll, Maryam Mohamadi, Mohammad Khanehbad, Asadollah Mahboubi, Reza Moussavi-Harami
Summary: The carbonate-dominated successions of the Tirgan Formation in the Kopet-Dagh Basin were studied to understand the tectonic and eustatic sea-level effects and autogenic influences on facies changes and sequence stratigraphy. Fourteen facies were identified and grouped into five associations based on depositional settings. A third-order depositional sequence was identified, along with several cycles. The development of the sequences and cycles was controlled by allogenic and autogenic factors. The study provides insights into sedimentary basin evolution and paleogeographic reconstructions.
GEOLOGICAL JOURNAL
(2022)
Article
Geology
Mahmoud Sharafi, M. Reolid, A. Bayet-Goll, M. Sadeghzadeh
Summary: The Lower Carboniferous carbonate sediments of the Mobarak Formation were analyzed to evaluate the role of allogenic and autogenic factors on the development of a distally steepened carbonate platform. Thirteen facies were identified and grouped into four facies associations. The formation of depositional sequences was controlled by tectonic activity and eustatic sea-level changes, while the development of the FSST package was influenced by increasing tectonic activity and autogenic factors.
INTERNATIONAL GEOLOGY REVIEW
(2023)
Article
Geosciences, Multidisciplinary
Ali Mokhtar Samet, Matias Reolid, Abbas Marok, Shin-ichi Kamikuri
Summary: The geological records of the Lower Chelif Basin provide insights into the early stages of Mediterranean restrictions. The study reveals a close relationship between the changes in microfossil assemblages, such as benthic foraminifera, radiolarians, and planktic foraminifera, and the environmental conditions of oxygen depletion and reoxygenation.
JOURNAL OF AFRICAN EARTH SCIENCES
(2022)
Article
Geology
Mohamed Bendali, Abdeslam Abtout, Boualem Bouyahiaoui, Hassina Boukerbout, Abbas Marok, Matias Reolid
Summary: The Chelif Basin in North Algeria is highly seismically active and little is known about its eastern part, the Upper Chelif Basin. This study conducted a new gravity survey to understand the structural architecture and lithological information of the Upper Chelif Basin. Different processing methods were applied to the gravity data, which revealed 2D and 3D images of the studied area and identified gravity anomalies and structures related to tectonic features. The results showcase the presence of dense geological bodies and provide valuable insights into the neotectonic structures of the basin.
JOURNAL OF IBERIAN GEOLOGY
(2022)
Article
Geography, Physical
Matias Reolid, Nigel Richard Ainsworth
Summary: Based on the study of sediments recovered from the Kerr McGee 97/12-1 well, three main ecostratigraphic intervals were identified. The uppermost Pliensbachian interval had a diverse foraminiferal assemblage dominated by Lenticulina muensteri, representing a phase before the biotic crisis. The ecostratigraphic interval related to the deposition of the lower Toarcian black claystones showed a drastic change in foraminiferal assemblages, with Reinholdella as the dominant form, indicating the biotic crisis phase. The ecostratigraphic interval from the upper part of the lower Toarcian to the upper Toarcian had increased foraminiferal diversity and abundance, suggesting the recovery of normal conditions.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2022)
Article
Chemistry, Physical
Isabel Abad, Fernando Nieto, Matias Reolid, Juan Jimenez-Millan
Summary: Geochemical changes and authigenic clays were detected in the fault rocks of the Padul Fault. The precipitation of chlorite and talc, promoted by hydrothermal fluid circulation near 200℃, was observed in the fault rocks. The presence of these authigenic clay minerals is consistent with the geological characteristics of the Padul Fault and plays an important role in aseismic deformation.
APPLIED CLAY SCIENCE
(2022)
Article
Geosciences, Multidisciplinary
M. Reolid, W. Ruebsam, M. J. Benton
Summary: The Early Jurassic Jenkyns Event had a significant impact on terrestrial ecosystems, especially in terms of changes in plant species and the emergence of new sauropodomorph and theropod clades characterized by increasing body size.
EARTH-SCIENCE REVIEWS
(2022)
Article
Multidisciplinary Sciences
Carolina Fonseca, Joao Graciano Mendonca Filho, Matias Reolid, Luis V. Duarte, Antonio Donizeti de Oliveira, Jaqueline Torres Souza, Carine Lezin
Summary: Choanoflagellates, microeukaryotes found in freshwater and marine environments, have been considered the closest relatives of animals. This study describes the first potential occurrence of choanoflagellates in Cretaceous sediments and discusses its paleoenvironmental significance. The classification of these organisms and their genetic origin are also discussed. This discovery provides insight into the origins of animals and offers guidelines for future identification of choanoflagellates in the geological record.
SCIENTIFIC REPORTS
(2023)
Article
Paleontology
Melani Berrocal-Casero, Juan Alberto Perez-Valera, Matias Reolid, Gines De Gea, Antonio Espin De Gea, Francisco Manuel Penalver Aroca, Fernando Perez-Valera
Summary: A new small marine reptile from the Triassic has been discovered in Cehegin, Spain. Fossil remains include bone moulds and fragments, revealing an articulated sauropterygian. This find, the most complete sauropterygian in the South Iberian Palaeomargin of the Tethys, provides new insights into the diversity and distribution of Sauropterygia in the Middle Triassic.
Article
Mineralogy
Fernando Nieto, Isabel Abad, Blanca Bauluz, Matias Reolid
Summary: In Early Jurassic submarine volcanic rocks of the Betic Cordillera, glauconite and celadonite coexist at the nanometre scale due to microbial activity. High-resolution analytical electron microscopy revealed that the two micas have clearly distinct compositional fields with gaps affecting Fe, Mg, and K. Glauconite is found to be a mica-smectite interstratification with more than 90% mica layers, while celadonite shows a higher degree of order at the lattice scale compared to glauconite.
EUROPEAN JOURNAL OF MINERALOGY
(2021)