Article
Geosciences, Multidisciplinary
Yanjun Cheng, Zhiping Wu, Xiaoyu Liu, Yaoqi Zhou, Yining Dai, Tongjie Zhang, Tengfei Zhou
Summary: This study presents the results of a new magnetostratigraphic study of the continental scientific drilling borehole LK-1 in the Riqingwei Basin. It refines the Late Jurassic to Early Cretaceous chronostratigraphic framework and determines the location of the J/K boundary in the borehole core. The study provides a comprehensive geochronologic framework for the basin and contributes to the understanding of the structural evolution of eastern China.
SCIENCE CHINA-EARTH SCIENCES
(2022)
Article
Geochemistry & Geophysics
Marcela Aragao, Giancarlo Scardia
Summary: The recent compilation of Illawarra Reversals shows significant differences in onset age and magnetic polarity pattern, making it difficult to establish a reference geomagnetic timescale for the Middle-Late Permian. The Parana Basin contains a thick sedimentary succession spannning from Palaeozoic to Mesozoic, with magnetostratigraphy and geochronology revealing primary detrital magnetic remanence (DRM) from quartz magnetic minerals acquired during sediment deposition.
GEOPHYSICAL JOURNAL INTERNATIONAL
(2021)
Article
Geology
Dan Bosence, Arnaud Gallois
Summary: This research explores the complex, multiphase process of non-marine thrombolite formation, highlighting phases of microbial framework construction, erosion, cementation, recrystallization, and sedimentation. The study provides insights into the fluctuating environmental conditions that lead to the formation of thrombolites. Detailed examination of microbialite frameworks and description of different types of thrombolites contribute to understanding the diverse textures and structures of non-marine thrombolites.
Article
Geology
E. Wolfgring, M. Wagreich, J. Hohenegger, K. Boehm, J. Dinares Turell, S. Gier, B. Sames, C. Spoetl, S. Jin
Summary: This study examined the cyclostratigraphy and paleoenvironments of pelagic deposits of the northwestern Tethys in the Upper Cretaceous Postalm section in Austria. The section displays rhythmic deposits from Santonian to late Campanian age, with distinct transitions and characteristics identified through biostratigraphy and isotope stratigraphy. The analysis of proxies in the upper section part revealed cycles spanning mid to upper Campanian, providing valuable insights into the geological history of the region.
CRETACEOUS RESEARCH
(2021)
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.
Article
Geosciences, Multidisciplinary
Maqsood Ur Rahman, Tao Jiang, Muhammad Sarim, Muhammad Hanif, Timothy T. Barrows, Yipan Hu
Summary: An accurate and high-resolution age model in marine sediments is crucial for understanding past oceanographic and climate changes. However, there is a lack of comprehensive biostratigraphic research for the Late Pleistocene interval in the southeastern Indian Ocean. In this study, a new chronology for IODP Hole U1516B was established using planktonic foraminifera delta 18O data.
Article
Geography, Physical
Ruiyao Zhang, Chunju Huang, David B. Kemp, Zhixiang Wang, Ze Zhang, Wenhan Chen
Summary: In this study, a high-resolution astronomical time scale spanning the middle to late Eocene was established using magnetostratigraphy and cyclostratigraphy. The results showed that hydroclimate variability in the Weihe Basin during this period was mainly controlled by eccentricity and obliquity forcing. The findings provide new insights into the driving mechanisms of orbital-scale hydroclimate evolution during the ice-free middle to late Eocene in continental lake basins.
GLOBAL AND PLANETARY CHANGE
(2023)
Article
Geosciences, Multidisciplinary
Theodore Green, Sarah P. Slotznick, Plinio Jaqueto, Timothy D. Raub, Eric Tohver, Ted E. Playton, Peter W. Haines, Joseph L. Kirschvink, Roger M. Hocking, Paul Montgomery
Summary: Late Devonian was a period of rapid changes in the Earth system, with uncertainties surrounding the causes of climate change, sea level changes, ocean anoxia, and the Frasnian-Famennian mass extinction. Analysis of rock magnetic data and magnetostratigraphy from the Late Devonian drill-core in the Lennard Shelf of Western Australia revealed scattered paleomagnetic directions, but showed good correlation with previous studies. Further data is needed to better understand the timing, causes, and environmental shifts during this critical time-period, including the Frasnian-Famennian mass extinction.
FRONTIERS IN EARTH SCIENCE
(2021)
Article
Geosciences, Multidisciplinary
Dinfa Vincent Barshep, Richard Henry Worden
Summary: Reconstructing provenance in sandstones can be challenging due to unknown hinterland palaeogeology. The use of multiple provenance methods reduces uncertainties in mineral distribution. This study applied petrography, X-ray fluorescence geochemistry and sedimentology to understand the provenance of Corallian sandstones in the Upper Jurassic Weald Basin, UK. Results showed a mixed source and highlighted the importance of a multi-proxy approach in provenance analysis.
GEOLOGICAL JOURNAL
(2023)
Article
Geochemistry & Geophysics
Benoit Issautier, Eric Lasseur, Nicolas Saspiturry, Paul Angrand, Simon Andrieu, Olivier Serrano
Summary: The Aquitaine Basin is closely related to the formation of the Pyrenees, providing important evidence of its early stages. This study investigates the Late Cretaceous evolution of the Aquitaine Basin using well log correlations and seismic reflection profiles, identifying two deformation stages with different basin geometries in the western and eastern parts. The findings shed light on the lithospheric buckling and compressive strain that contributed to the formation of the Pyrenees.
Article
Geosciences, Multidisciplinary
Zixian Zhao, Wei Shi, Yong Yang, Maotang Cai, Changfeng Liu, Xiaobo Liu, Tianyu Wang, Yuanfang Zhao, Qian Yang
Summary: The basin deposits of the northeastern Tibetan Plateau provide a valuable record for studying the plateau uplift and aridification in NW China. This study on drill core WW-01 in the Wuwei Basin reveals a long depositional-paleoenvironmental history from approximately 11.15 Ma to present, with significant changes in sedimentary environment and accumulation rate at around 8.25 and 2.58 Ma.
JOURNAL OF ASIAN EARTH SCIENCES
(2022)
Article
Paleontology
L. Peti, N. Thibault
Summary: This study investigates the early Jurassic nannofossil assemblages in the Paris Basin and explores the links between climate change, ocean nutrient concentrations, and the abundance and diversity of calcareous nannoplankton. The results suggest that factors such as cold conditions, open ocean conditions, and high fertility levels influence the evolution and distribution of calcareous nannoplankton.
MARINE MICROPALEONTOLOGY
(2022)
Article
Geography, Physical
Hao Liang, Ke Zhang, Jianli Fu, Weitao Wang, Peizhen Zhang, Zhanwu Ma
Summary: The study of the Tongxin Basin in the northeastern Tibetan Plateau using magnetostratigraphy and cosmogenic Be-10/Al-26 burial chronology reveals the tectonic evolution of the region. A broad basin existed from >21.7 to 16.5 million years ago, followed by WNW-trending faulting at around 16.5 million years which formed fault-bounded basins outward from the western margin.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2021)
Article
Geology
Manuel Vieira, Salih Mahdi, Manuel Casas-Gallego, Michael Ayress
Summary: This study presents high-resolution palynological and micropalaeontological analyses of an upper Maastrichtian cored succession from a well in the More Basin (Norwegian continental shelf). Various assemblages of dinoflagellate cysts and foraminifera provide insights into the palaeobiogeography and palaeoenvironmental conditions during the late Maastrichtian. An outer neritic setting is interpreted based on the high abundance of planktonic foraminifera.
CRETACEOUS RESEARCH
(2022)
Article
Geosciences, Multidisciplinary
Natalia M. Levashova, Inessa Golovanova, D. Rudko, Konstantin N. Danukalov, S. Rudko, Salmanova R. Yu, Joseph G. Meert
Summary: Recent studies suggest that the Late Ediacaran to Early Cambrian magnetic field was in a hyperactive reversing state, with a reversal frequency estimated at 20 times per million years. This has important implications for understanding plate reconstructions, inner core characteristics, and biological evolution.
Article
Geochemistry & Geophysics
Frederic Delarue, Thanh Thuy Nguyen Tu, Remi Duhamel, Celine Paris, Francois Baudin
Summary: This study investigates the effects of standard acid maceration on the structure of organic matter isolated from ancient silicified sediments. The results show that acid maceration can lead to chemical degradation of the syngenetic hydrocarbonaceous moieties. In sediments with early silicification, new analytical techniques are needed to study the molecular content of syngenetic organic compounds.
ORGANIC GEOCHEMISTRY
(2021)
Article
Soil Science
Josette Garnier, Gilles Billen, Julien Tournebize, Pierre Barre, Bruno Mary, Francois Baudin
Summary: This study addressed the combined short- and long-term hydrological control of organic carbon export from soils and the role of leaching process in soil OC pool dynamics. By investigating DOC concentrations and subsurface runoff, the study calculated annual DOC export and compared it with data from literature. The study also used the AMG model with a leaching function to determine the equilibrium value of OCA and found an annual carbon loss rate for the plots in the Seine Basin.
Article
Geology
E. Chenot, J. F. Deconinck, F. Baudin, T. Cocquerez, E. Puceat, M. J. Razmjooei, N. Thibault
Summary: A study on a 1000 m-thick sequence of Upper Cretaceous sediments in the Isabena Valley in Spain revealed the evolution of environmental conditions in the basin. Through biostratigraphy, carbon isotope stratigraphy, X-Ray diffraction, and organic matter characterization, changes in the clay mineral assemblage source from south to northeast were identified. The study also showed a progressive illitisation of smectite and increasing proportions of kaolinite throughout the section.
JOURNAL OF IBERIAN GEOLOGY
(2022)
Article
Geochemistry & Geophysics
L. M. E. Percival, L. Marynowski, F. Baudin, S. Goderis, D. De Vleeschouwer, M. Rakocinski, K. Narkiewicz, C. Corradini, A. -c. Da Silva, P. Claeys
Summary: In this study, nitrogen-isotope trends and geochemical evidence were used to investigate the relative importance of global-scale processes versus local influences on environmental change during the Frasnian-Famennian mass extinction. The results showed regional differences in the timing and nature of marine perturbations, suggesting that the variable influx of terrigenous nutrients played a role in driving environmental degradation at that time.
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
(2022)
Article
Geosciences, Multidisciplinary
Mathilde Mercuzot, Sylvie Bourquin, Pierre Pellenard, Laurent Beccaletto, Johann Schnyder, Francois Baudin, Celine Ducassou, Sylvain Garel, Georges Gand
Summary: The late Carboniferous-early Permian period was a crucial time in Earth's history, characterized by significant global geodynamic and climate changes. This study focuses on the Autun Basin in France to better understand the sedimentation in the eastern equatorial Pangea during this time. The research proposes a refined sedimentological model for the Autun Basin, reinterpreting the lower sedimentary succession as mainly lacustrine rather than fluvial and lacustrine. The study also provides evidence for a larger sedimentation area and connections with neighboring basins.
INTERNATIONAL JOURNAL OF EARTH SCIENCES
(2022)
Article
Geosciences, Multidisciplinary
Athina Tzevahirtzian, Antonio Caruso, Giovanna Scopelliti, Francois Baudin, Marie-Madeleine Blanc-Valleron
Summary: This study aims to reconstruct the environmental changes leading to the Messinian Salinity Crisis during a specific period in geologic time. Analysis of a core sample from the Caltanissetta Basin in Sicily revealed characteristics of pre-salt sediments and provided insights into the paleoenvironmental evolution towards salt deposition. The study identified stressful environmental conditions and a complex set of brecciation processes that marked the deposits during the late Messinian.
MARINE AND PETROLEUM GEOLOGY
(2022)
Article
Geochemistry & Geophysics
Audrey M. Pruski, Elsa Stetten, Arnaud Huguet, Gilles Vetion, Haolin Wang, Claire Senyarich, Francois Baudin
Summary: The sediment cores from the Congo deep-sea fan show that the sediments are enriched in fatty acids and have a similar composition to the sediments from the Congo River. The limited reprocessing of the sediments during transit is likely due to tight interactions with mineral particles and rapid transfer. The combination of fatty acid profiles and geochemical proxies reveals that organic matter degradation is mostly limited to the oxic layer and there are distinct depositional dynamics between fine soil-derived particles and coarser higher plant detritus.
ORGANIC GEOCHEMISTRY
(2022)
Article
Soil Science
Guillaume Le Mer, Nicolas Bottinelli, Marie -France Dignac, Yvan Capowiez, Pascal Jouquet, Arnaud Mazurier, Francois Baudin, Laurent Caner, Cornelia Rumpel
Summary: The specific traits of earthworm species may play a role in organic carbon protection through their impact on the microstructural properties of casts.
Article
Multidisciplinary Sciences
Ludovic Henneron, Jerome Balesdent, Gael Alvarez, Pierre Barre, Francois Baudin, Isabelle Basile-Doelsch, Lauric Cecillon, Alejandro Fernandez-Martinez, Christine Hatte, Sebastien Fontaine
Summary: Soil carbon dynamics are strongly influenced by depth, with slower dynamics found in deeper layers. The main factors driving the depth-dependency of soil carbon dynamics are the bioenergetic constraints of decomposers, including low energy density and high activation energy of decomposition. Root-induced priming can accelerate the decomposition of deep soil carbon by providing sufficient energy supply. These findings are crucial for understanding and predicting carbon cycling and climate feedbacks.
NATURE COMMUNICATIONS
(2022)
Article
Environmental Sciences
Sarah Louise Robin, Cyril Marchand, Maximilien Mathian, Francois Baudin, Andrea C. Alfaro
Summary: Urbanization has led to changes in trace metal dynamics in mangrove soil, affecting soil properties. However, mangrove trees regulate the translocation of trace metals to different tissues.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2022)
Article
Soil Science
Francisco Ruiz, Cornelia Rumpel, Marie-France Dignac, Francois Baudin, Tiago Osorio Ferreira
Summary: In this study, the biological and thermal stability of mixed-nature soil organic matter (SOM) derived from grass litter and kerogen was assessed. The results showed that the chemical recalcitrance of kerogen compounds had a significant impact on short-term biological stability and was strongly correlated with thermal stability indices.
SOIL BIOLOGY & BIOCHEMISTRY
(2023)
Article
Geosciences, Multidisciplinary
Johann Schnyder, Francois Baudin, Roger Jan Du Chene
Summary: This study characterized the organic matter content of marine deposits at the Oxfordian-Kimmeridgian transition in the Boulonnais region of France. The results showed that there were organic-rich deposits in platform environments during the early late Kimmeridgian period, which were associated with enhanced planktonic productivity and/or developing dysoxia/anoxia. Similar organic-rich intervals were also observed in platform deposits in Normandy and Charentes in France, as well as in basinal deposits from Yorkshire and Dorset in the UK. The study suggested that the onset of the late Jurassic organic-rich bands (ORB) in NW Europe was triggered by seawater warming.
COMPTES RENDUS GEOSCIENCE
(2022)
Article
Ecology
Eva Kanari, Lauric Cecillon, Francois Baudin, Hugues Clivot, Fabien Ferchaud, Sabine Houot, Florent Levavasseur, Bruno Mary, Laure Soucemarianadin, Claire Chenu, Pierre Barre
Summary: Changes in soil organic carbon (SOC) stocks have a significant impact on atmospheric CO2 concentration during the 21st century. This study proposes a machine learning approach to optimize the initialization of SOC models, resulting in improved accuracy. The results suggest that multi-compartmental models combined with this initialization method can simulate observed SOC stock changes with excellent precision.
Article
Geosciences, Multidisciplinary
Alexis Caillaud, Melesio Quijada, Stephan R. Hlohowskyj, Anthony Chappaz, Viviane Bout-Roumazeilles, Jean-Yves Reynaud, Armelle Riboulleau, Francois Baudin, Thierry Adatte, Jean-Noel Ferry, Nicolas Tribovillard
Summary: The Marnes Bleues Formation in the Vocontian Basin of Southeastern France contains dark-colored levels that are typically rich in organic matter. However, a multi-parameter study revealed that these levels vary in their organic matter content, sedimentation and accumulation rates, and other characteristics. Despite the variations, all the dark levels were found to have low to modest enrichments in organic matter. This suggests that factors such as productivity and oxygen levels alone are not sufficient to induce high accumulations of organic matter. These findings may have broader implications for other settings, regardless of their geological age or location.
BSGF-EARTH SCIENCES BULLETIN
(2022)
Article
Geosciences, Multidisciplinary
Lauric Cecillon, Francois Baudin, Claire Chenu, Bent T. Christensen, Uwe Franko, Sabine Houot, Eva Kanari, Thomas Katterer, Ines Merbach, Folkert van Oort, Christopher Poeplau, Juan Carlos Quezada, Florence Savignac, Laure N. Soucemarianadin, Pierre Barre
Summary: Partitioning SOC into stable and active fractions is crucial for monitoring soil health and accurately modeling the carbon cycle. A new approach using a machine-learning model trained on Rock-Eval (R) thermal analysis data can accurately predict the proportion of stable SOC fraction. Future developments aim to expand the model's application domain and reduce prediction errors.
GEOSCIENTIFIC MODEL DEVELOPMENT
(2021)