Article
Geochemistry & Geophysics
Maoyu Wang, Tianyu Chen, Dong Feng, Xin Zhang, Tao Li, Laura F. Robinson, Qianyong Liang, Or M. Bialik, Yuanyuan Liu, Yizhaq Makovsky
Summary: Marine methane hydrates, a significant carbon reservoir, are influenced by seafloor pressure and temperature changes. Reconstructing the growth history of cold-seep carbonates helps determine methane hydrate stability in the past. This study developed in-situ analytical methods to investigate U-series geochemistry and geochronology of cold-seep carbonates, finding that U-238 and Th-232 in the carbonates primarily originate from seawater and detrital particles, respectively. Applying the method to samples from the northern South China Sea revealed continuous cold seep activity since approximately 72 ka, with varying timing and duration of methane leakage.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2022)
Article
Geosciences, Multidisciplinary
Rooholah Noemani Rad, Damien Do Couto, Marie-Francoise Brunet, Luis Pomar, Franz T. Fuersich, Seyed Ali Moallemi, Christian Gorini
Summary: The lithostratigraphy and biostratigraphy of Middle to Upper Jurassic carbonate platforms in the Eastern Kopet Dagh region of northeastern Iran were studied, revealing five different carbonate production systems and their geological significance for potential hydrocarbon reservoir exploration.
MARINE AND PETROLEUM GEOLOGY
(2021)
Review
Geology
Afshin Zohdi, Adrian Immenhauser, Javad Rabbani
Summary: This study provides a detailed facies and depositional record from a distally steepened Middle Jurassic carbonate ramp in the northern Tethyan realm. The development of the Middle Callovian mounds is linked to minimum sedimentation rates and accommodation space resulting from a long-term sea-level rise, while the Upper Callovian conglomeratic deposits may have formed due to a relative sea-level fall.
SEDIMENTARY GEOLOGY
(2021)
Article
Geosciences, Multidisciplinary
Jean-Philippe Blouet, Andreas Wetzel, Sutieng Ho
Summary: The dolomitic concretion containing a lucinid bivalve Anodontia goliath at a Pliocene methane seep site in Taiwan reveals the impact of chemosymbiotic bivalves on fluid migration through shallow sediments. The burrow acted as a conduit channeling methane-charged fluid, with potential implications for fluid mixing and diagenetic reaction rates in sediments. The report provides direct evidence that animal burrows can pre-determine the formation of fluid conduits at seep sites.
MARINE AND PETROLEUM GEOLOGY
(2021)
Article
Plant Sciences
Enjing Jin, Huayue Li, Zengzhi Liu, Fei Xiao, Wenli Li
Summary: Two new and six known dixiamycins were isolated from the culture broth of a cold-seep-derived actinomycete Streptomyces olivaceus OUCLQ19-3. The compounds showed notable growth inhibitions against multi-drug-resistant strains, with some being more potent than the positive control tetracycline. Extensive spectroscopic analyses were used to elucidate the structures of the compounds.
JOURNAL OF NATURAL PRODUCTS
(2021)
Article
Geosciences, Multidisciplinary
Jiangong Wei, Xiaoming Miao, Zhifeng Wan, Jiwei Li, Hengchao Xu, Jiangtao Li, Tingting Wu
Summary: By analyzing the seep carbonates, it was discovered that a new paleo-seep was found near the Ganquan Plateau, which mainly consists of low-magnesium calcite with negative δ13C values (-43.46 to -33.83 VPDB) and positive δ18O values (2.10 to 3.80 VPDB). This indicates that the formation of the carbonates is mainly influenced by methane from gas hydrate dissociation. Furthermore, the Ganquan Plateau is also an important area for hydrate occurrence, which is significant for hydrate exploration.
JOURNAL OF ASIAN EARTH SCIENCES
(2023)
Article
Engineering, Electrical & Electronic
Lin Guo, Octavian Postolache, Lin Ma, Yang Shi
Summary: This article introduces a ship-borne cold seep sonar system that detects the existence of submarine cold seep by measuring scattering intensity and displays it through an intuitive acoustic image. Through investigation and measurement in the South China Sea, it is proven that the system can effectively identify submarine cold seep.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2022)
Article
Multidisciplinary Sciences
Lucia Villar-Munoz, Masataka Kinoshita, Joaquim P. Bento, Ivan Vargas-Cordero, Eduardo Contreras-Reyes, Umberta Tinivella, Michela Giustiniani, Natsue Abe, Ryo Anma, Yuji Orihashi, Hikaru Iwamori, Tomoaki Nishikawa, Eugenio Andres Veloso, Satoru Haraguchi
Summary: Integrated analysis of geophysical and geological datasets in the Chile Triple Junction has improved understanding of the hydrogeological system. Anomalous high heat flow values and fluid advection are influenced by geological structures, pressure-driven discharge, and ridge subduction, providing valuable insights for studies related to hydrothermal circulation, seismicity, volcanism, and gas hydrate stability.
SCIENTIFIC REPORTS
(2021)
Article
Geology
Olev Inn, Izzet Hosgor
Summary: The Jurassic platform margin succession in the Hezan area in southeastern Turkey includes carbonate-dominated formations. The upper part of the Hezan unit (the Kuran Formation) contains unique layers of oolitic and clayey limestone. This study describes the first record of the calcareous polychaete tubeworm Propomatoceros lumbricalis from the Middle Jurassic lower part of the Kuran Formation. The taxonomic information recorded will contribute to our understanding of the biogeographic history and paleoecology of Middle Jurassic calcareous polychaete communities.
CARNETS DE GEOLOGIE
(2023)
Article
Geology
Carolina Henriquez, Mauricio Calderon, Leonardo Fadel Cury, Gustavo Athayde, Sergio Carvajal, Poldie Oyarzun, Anelize Bahniuk
Summary: Carbonate deposits and sedimentary records from lakes in southern Patagonia play a significant role in regional environmental research. The case study of Laguna Timone, a maar lake located within the Pali Aike Volcanic Field, shows the interplay between hydrogeological properties, climate, and biological influences in carbonate precipitation processes, providing valuable insights into continuous climatic and environmental archives.
SEDIMENTARY GEOLOGY
(2022)
Article
Ecology
Zhimeng Xu, Jiawei Chen, Yingdong Li, Erfan Shekarriz, Wenxue Wu, Bingzhang Chen, Hongbin Liu
Summary: Using high-throughput sequencing data, this study reveals that cold-seep sediment harbors a higher abundance and diversity of parasitic microeukaryotes compared to non-seep regions. The study also shows that microeukaryotic community heterogeneity is larger between habitats than within habitat, highlighting the importance of cold-seep sediment as a hotspot for microeukaryotic diversity.
Article
Geochemistry & Geophysics
Clara L. Blattler, Wei-Li Hong, Kalle Kirsimae, John A. Higgins, Aivo Lepland
Summary: The study investigated the precipitation of authigenic carbonate minerals in a methane seep system in the northern Barents Sea, providing new constraints on the relationship between precipitation rate and calcium isotope fractionation. This research contributes valuable information for advancing the mechanistic understanding of calcium isotope fractionation and trace element distributions in carbonate minerals in geological applications.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2021)
Article
Geosciences, Multidisciplinary
A. Husinec, J. F. Read
Summary: Through the study of a Middle Jurassic carbonate platform in Croatia, we found that the rock record shows cyclical variations driven by obliquity, supporting the existence of moderate glaciation during the Middle Jurassic.
PALEOCEANOGRAPHY AND PALEOCLIMATOLOGY
(2023)
Article
Microbiology
Chenchen Guo, Rikuan Zheng, Ruining Cai, Chaomin Sun, Shimei Wu
Summary: The study identified a novel bacterial strain, Pseudomonas marinensis gcc21, isolated from deep-sea cold seep sediment, which exhibited high catalytic activity of cold-active lipases at 4 degrees C. The strain's genome contained two novel encoding genes for cold-active lipases, Lipase 1 and Lipase 2.
Article
Engineering, Chemical
Hao Wang, Ziquan Yong, Jinmin Song, Tong Lin, Yongqiang Yu
Summary: Microbialite textures such as microbial mats and biofilms were found in the Middle Triassic dolomite in the Sichuan Basin. The dolomite structure was similar to those observed in microbial culture experiments and contained extracellular polymeric substances (EPS). Geochemical analysis showed that the dolomitic microbialites had distinguishable characteristics compared to associated limestones, indicating the significant influence of microbial effects on diagenetic processes.
Article
Geosciences, Multidisciplinary
Francois-Nicolas Krencker, Alicia Fantasia, Jan Danisch, Rowan Martindale, Lahcen Kabiri, Mohamed El Ouali, Stephane Bodin
EARTH-SCIENCE REVIEWS
(2020)
Article
Paleontology
Alexander Hueter, Stefan Huck, Ulrich Heimhofer, Stephane Bodin, Stefan Weyer, Klaus P. Jochum, Yvonne Roebbert, Adrian Immenhauser
Summary: This study investigates the exposure of modern coastal marine ecosystems to low seawater oxygen levels, using upper Barremian to lower Aptian strata in the Lusitanian Basin as a case study to analyze the response of microencrusting organisms to platform-top seawater oxygen depletion. The research findings suggest that the demise of rudist-coral ecosystems in the study area was not driven by anoxia, but rather by well-oxygenated early Aptian platform-top water masses. The study also highlights the complexity of mechanisms involved in the turnover of Early Cretaceous coral-rudist ecosystems.
Article
Energy & Fuels
Arka Rudra, Hamed Sanei, H. P. Nytoft, H. Petersen, Carlette Blok, Stephane Bodin, J. A. Bojesen-Koefoed
Summary: This study provides the first detailed organic geochemistry and petrography of the Lower Cretaceous tight reservoir units from the Valdemar Field in the Danish Central Graben. The reservoir units contain thermally immature marine Type II kerogen, with the more clay-rich layers acting as efficient seals for vertical migration. Evidence of significant oil migration is observed across all lithounits, with the Tuxen Formation constituting the main reservoir and showing the highest oil migration. Biomarkers indicate open-marine depositional conditions and a geochemical composition similar to oils charged from the Farsund Formation. The presence of solid bitumen within these heterogeneous reservoir units may influence reservoir quality and petrophysical properties.
INTERNATIONAL JOURNAL OF COAL GEOLOGY
(2021)
Article
Geosciences, Multidisciplinary
Laurent Petitpierre, Sebastian Frohlich, Stephane Bodin, Paul Grech, Simon Lang, Dina Vachtman, Jonathan Redfern
Summary: The study focused on Lower Carboniferous strata on the edge of the Al Hammadah al Hamra plateau, with new data revealing a sedimentary log of 1500 m and a re-evaluation of the Marar's maximum thickness to be 800 m. Detailed facies analysis supports a predominantly marine depositional environment in the region.
JOURNAL OF AFRICAN EARTH SCIENCES
(2021)
Article
Geography, Physical
R. Vasseur, B. Lathuiliere, I Lazar, R. C. Martindale, S. Bodin, C. Durlet
Summary: The current loss of taxa is considered the sixth mass extinction, with coral reefs experiencing significant damage. The Pliensbachian-Toarcian transition in the Early Jurassic provides insights on coral survival ability, with a catastrophic extinction and subsequent radiation during the early Toarcian period. This interval is considered a key period in the evolutionary dynamics of corals and reef ecosystems.
GLOBAL AND PLANETARY CHANGE
(2021)
Article
Geography, Physical
Alicia Fantasia, Emanuela Mattioli, Jorge E. Spangenberg, Thierry Adatte, Enrique Bernandez, Jorge Ferreira, Nicolas Thibault, Francois-Nicolas Krencker, Stephane Bodin
Summary: The study provides insights into global carbon cycle perturbations during the Aalenian, showing that medium-term carbon isotope fluctuations are reproducible across different paleooceanographic settings. It fills a gap in our understanding of global environmental changes in the Middle Jurassic, highlighting the Aalenian as a pivotal time interval of environmental perturbations.
GLOBAL AND PLANETARY CHANGE
(2022)
Article
Geosciences, Multidisciplinary
Mohamed El Ouali, Lahcen Kabiri, Badre Essafraoui, Ali Charroud, Francois-Nicolas Krencker, Stephane Bodin
Summary: This study focuses on the red detrital formations in the Central and Eastern High Atlas of Morocco, with significant lithological variations observed between the eastern and western parts. While the eastern part consists of three lithostratigraphic formations, the western part is mainly characterized by the sandstone-rich Guettioua Formation. The differences in facies and thickness are largely attributed to the geodynamic evolution of the Central High Atlas, tectonics, salt diapirism events, and local subsidence rates.
JOURNAL OF AFRICAN EARTH SCIENCES
(2021)
Article
Geosciences, Multidisciplinary
Jan Danisch, Francois-Nicolas Krencker, Malte Mau, Emanuela Mattioli, Philippe Faure, Yves Almeras, Alexis Nutz, Lahcen Kabiri, Mohamed El Ouali, Stephane Bodin
Summary: The early Bajocian environmental crisis led to a severe demise event that restricted carbonate production to supra-to intertidal settings, where microbial and peloidal limestones are the only trace of carbonate production. As a result, most of the platform is dominated by extended marl deposits that are usually interpreted as hemipelagic deposits. This observation highlights the need for caution when interpreting marl-dominated successions during times of neritic carbonate factory demise.
JOURNAL OF AFRICAN EARTH SCIENCES
(2021)
Article
Geosciences, Multidisciplinary
F-N Krencker, A. Fantasia, M. El Ouali, L. Kabiri, S. Bodin
Summary: Standard sequence stratigraphy interpretations are often based on the assumption of stable sediment supply, leading to uncertainties in understanding sequence architecture and sea-level changes during major paleoenvironmental disturbances. This study focuses on the Pliensbachian/Toarcian boundary in Morocco and highlights the importance of examining carbonate factory collapse events without clear knowledge of their shoreline trajectory. The results suggest that during a poisoning event, the standard sequence tracts are altered, with little evidence of highstand deposits.
MARINE AND PETROLEUM GEOLOGY
(2022)
Article
Geography, Physical
C. N. Blok, J. Ineson, K. Anderskouvc, A. Fantasia, E. Sheldon, N. Thibault, M. E. Jelby, T. Adatte, S. Bodin
Summary: This study explores the climatic evolution during the Early Cretaceous in the Boreal Realm of the Danish Central Graben, North Sea. The research findings suggest that there are differences in precipitation patterns between the Tethyan Realm and the Boreal Realm during the OAE-1a period, indicating a more complex weathering feedback mechanism during hyperthermal events than previously assumed.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2022)
Article
Geology
Yi Wang, Stephane Bodin, Jerzy S. Blusztajn, Clemens Ullmann, Sune G. Nielsen
Summary: The ongoing oceanic oxygen loss will have a profound impact on the distribution and density of life on Earth. However, drivers of the initiation and termination of global oceanic deoxygenation are poorly understood. New research reveals that in the mid-Cretaceous, there were three rapid global deoxygenation events that occurred after massive volcanism and were influenced by increased continental weathering under a warmer climate. The interactions of long-term climate change and short-term orbital modulation played a role in the termination of each deoxygenation interval.
Article
Geosciences, Multidisciplinary
Mads E. Jelby, Jon R. Ineson, Nicolas Thibault, Stephane Bodin, Carlette N. Blok, Niklas Edvardsen, Tatjana S. Clemmensen, Toms Buls, Kresten Anderskouv
Summary: This study presents a comprehensive carbonate facies analysis of the Lower Cretaceous Tuxen and Sola Formations in the Danish Central Graben, North Sea. The analysis reveals 50 different facies, which represent a range of sedimentary structures, lithologies, and color variations associated with redox conditions. The study provides insights into sedimentary processes and tectonic activity in the area.
BULLETIN OF THE GEOLOGICAL SOCIETY OF DENMARK
(2022)
Article
Geography, Physical
Stephane Bodin, Alicia Fantasia, Francois-Nicolas Krencker, Bjarke Nebsbjerg, Lasse Christiansen, Simon Andrieu
Summary: The Pliensbachian/Toarcian boundary event caused a global collapse of shallow marine ecosystems, but our understanding of its drivers and unfolding is relatively ambiguous due to the numerous hiatuses in the sedimentary record during this critical time interval. This study uses carbon isotope chemostratigraphy and sequence stratigraphy to demonstrate how major changes in sea-level and sedimentation supply led to the formation of ubiquitous, often cryptic hiatal surfaces in the sedimentary record.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2023)
Article
Geography, Physical
Stephane Bodin, Malte Mau, Driss Sadki, Jan Danisch, Alexis Nutz, Francois-Nicolas Krencker, Lahcen Kabiri
GLOBAL AND PLANETARY CHANGE
(2020)
Article
Paleontology
Raphael Vasseur, Simon Boivin, Bernard Lathuiliere, Iuliana Lazar, Christophe Durlet, Rowan-Clare Martindale, Stephane Bodin, Khalid Elhmidi
PALAEONTOLOGIA ELECTRONICA
(2019)