Article
Geography, Physical
Juan Li, Xiumian Hu, Eduardo Garzanti, Marcelle BouDagher-Fadel
Summary: This study presents new biostratigraphic, sedimentological, and carbon-isotopic data to constrain the precise stratigraphic position of the Paleocene/Eocene boundary and investigate environmental changes across the PETM. It is found that the temporary demise of the carbonate ramp during the PETM is attributed to increased siliciclastic supply driven by changes in regional hydrology.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2021)
Article
Geology
Nicte A. Gutierrez-Puente, Ricardo Barragan, Fernando Nunez-Useche
Summary: This study interprets paleoenvironmental and paleoceanographic conditions through a microfacies analysis of a carbonated succession of the Tam-aulipas Formation in central-eastern Mexico, within a temporal framework based on planktic foraminiferal and colomiellids biostratigraphy. Variations in abundance of planktic foraminifera, radiolarians, praecolomiellids, colomiellids, dinocyst and echinoderm fragments reflect fluctuations in ancient trophic conditions in the water column, potentially associated with global environmental changes such as Oceanic Anoxic Events.
CRETACEOUS RESEARCH
(2021)
Article
Multidisciplinary Sciences
Christopher E. Cornwall, Steeve Comeau, Niklas A. Kornder, Chris T. Perry, Ruben van Hooidonk, Thomas M. DeCarlo, Morgan S. Pratchett, Kristen D. Anderson, Nicola Browne, Robert Carpenter, Guillermo Diaz-Pulido, Juan P. D'Olivo, Steve S. Doo, Joana Figueiredo, Sofia A. V. Fortunato, Emma Kennedy, Coulson A. Lantz, Malcolm T. McCulloch, Manuel Gonzalez-Rivero, Verena Schoepf, Scott G. Smithers, Ryan J. Lowe
Summary: Ocean warming and acidification pose a significant threat to the future growth of coral reefs, with projected declines in coral reef net carbonate production rates under different emission scenarios. Bleaching events leading to reduced coral cover are the main drivers of these declines, emphasizing the urgent need for stabilization of atmospheric CO2 emissions to ensure the functional roles of coral reefs are maintained.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Biodiversity Conservation
Lester Kwiatkowski, Olivier Torres, Olivier Aumont, James C. C. Orr
Summary: Studies have shown that the influence of increasing atmospheric CO2 and climate change on the marine CO2 system and ecosystems is mainly manifested in the variability of carbonate chemistry, including seasonal and diurnal variations. Models project that the future ocean will experience enhanced diurnal variability of pCO2 and [H+], which may impose higher metabolic costs on marine organisms.
GLOBAL CHANGE BIOLOGY
(2022)
Article
Geosciences, Multidisciplinary
Tahereh Habibi
Summary: The study of two stratigraphic sections in the Mymand anticline of the Zagros Mountains revealed various microfacies types and fossil assemblages, providing insights into the sedimentary environment evolution during the Oligocene period.
ACTA GEOLOGICA SINICA-ENGLISH EDITION
(2021)
Article
Geochemistry & Geophysics
Marina B. Suarez, Aisha Al Suwaidi, Elizabeth H. Montgomery, James I. Kirkland, Joe Andrew, Noah Mclean, Andreas Moller, Gregory Ludvigson, Celina A. Suarez
Summary: This paper presents a new continental record from the Aptian Stage of the Cretaceous, roughly 116 million years ago. The record comes from a series of sedimentary rocks near Moab, Utah. The sedimentary rocks provide evidence of carbon cycle perturbations and environmental change as recorded by long-lived lake sediment deposition as well as a new precise age to constrain the timing of the deposit.
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
(2023)
Article
Geosciences, Multidisciplinary
Oscar Gratacos, Telm Bover-Arnal, Roger Clavera-Gispert, Ana Carmona, David Garcia-Selles
Summary: The evolution of an Aptian carbonate system was studied using a 3D process-based sedimentary-stratigraphic forward model, revealing that fluctuations in relative sea level exerted the main control on resulting stratigraphic and facies architectures, while the influence of terrigenous clastic sediment input was less pronounced. The study highlights the sensitivity of facies assemblages to different controlling parameters, emphasizing the importance of understanding these factors for accurate geological modeling and prediction.
MARINE AND PETROLEUM GEOLOGY
(2021)
Article
Multidisciplinary Sciences
Daijun Fan, Xuanlong Shan, Yousif M. Makeen, Wentong He, Siyuan Su, Yibo Wang, Jian Yi, Guoli Hao, Yuting Zhao
Summary: This study sheds light on the response of continental lakes in the Hongmiaozi Basin (North China) under early Aptian extreme climate conditions. The research findings provide insights into the impact of climate change on geological sedimentation.
SCIENTIFIC REPORTS
(2021)
Article
Geosciences, Multidisciplinary
Kai-Yuan Cheng, Lucas Harris, Christopher Bretherton, Timothy M. Merlis, Maximilien Bolot, Linjiong Zhou, Alex Kaltenbaugh, Spencer Clark, Stephan Fueglistaler
Summary: This study used a global storm resolving model to simulate the changes in the frequency of intense convection under different sea surface temperature conditions. The results showed that increased sea surface temperature globally enhanced the frequency of intense convection, but with significant spatial and seasonal variations. Changes in the spatial pattern of intense convection were associated with changes in planetary circulation.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Article
Geology
Cristian Victor Mircescu, Ioan I. Bucur, George Ples, Constantin Balica, Razvan Ungureanu, Emanoil Sasaran
Summary: This study examines the easternmost side of the Getic Carbonate Platform in the Southern Carpathians of Romania through various analytical methods. The results reveal the depositional environments and rock characteristics of the studied area, as well as the transition between the Tithonian and Berriasian stages.
CRETACEOUS RESEARCH
(2023)
Article
Geology
Muhammad Riaz, Arman Jafarian, Ardiansyah Koeshidayatullah, Fabrizio Frontalini, Lei Jiang, Khalid Latif, Tehseen Zafar
Summary: The Cambrian carbonate sequence in North China is globally and regionally significant due to its continuous and thick exposure, providing valuable data on environmental changes and biological events. However, studies on the depositional patterns and geochemical variations of these outcrops are limited. This study integrates fieldwork with petrographic and geochemical analyses to address these issues.
SEDIMENTARY GEOLOGY
(2023)
Editorial Material
Multidisciplinary Sciences
Jeff Tollefson
Summary: A New York experiment is part of a commercial race to develop ocean-based technologies to extract carbon dioxide from the atmosphere.
Article
Geography, Physical
Juan Li, Xiumian Hu, Eduardo Garzanti, Marcelle BouDagher-Fadel
Summary: This study evaluates the impact of the Paleocene-Eocene Thermal Maximum (PETM) on a shallow-water carbonate platform using sedimentological, biostratigraphic, and carbon isotopic data. The results show significant environmental and carbon isotopic response to PETM, with regression and turnover of shallow-water biota.
GLOBAL AND PLANETARY CHANGE
(2022)
Article
Paleontology
Francisco Javier Cuen-Romero, Alejandra Montijo-Gonzalez, Rogelio Monreal, Frederick A. Sundberg, Guadalupe Espinoza-Maldonado, Francisco Javier Grijalva-Noriega, Hector Arturo Noriega-Ruiz, Ismael Minjarez-Sosa, Jose Alfredo Ochoa-Granillo
Summary: This study provides new insights into depositional paleoenvironments through the analysis of siliciclastic microfacies, carbonate microfacies, and biofacies from sedimentary formations in central Sonora, northern Mexico. The study identifies different lithologies and microfacies, as well as two biofacies, and concludes that sea level changes are the most important parameter in determining the depositional environments.
Article
Geosciences, Multidisciplinary
Simone Strydom, Roisin McCallum, Anna Lafratta, Chanelle L. Webster, Caitlyn M. O'Dea, Nicole E. Said, Natasha Dunham, Karina Inostroza, Cristian Salinas, Samuel Billinghurst, Charlie M. Phelps, Connor Campbell, Connor Gorham, Rachele Bernasconi, Anna M. Frouws, Axel Werner, Federico Vitelli, Viena Puigcorbe, Alexandra D'Cruz, Kathryn M. McMahon, Jack Robinson, Megan J. Huggett, Sian McNamara, Glenn A. Hyndes, Oscar Serrano
Summary: This data collation presents research data on seagrass from 1975 to 2020, including biotic and abiotic habitat characteristics. The study found that biomass and structure of seagrass are important aspects, while data on production are limited. These data can be utilized in seagrass ecology and other related research fields.
EARTH SYSTEM SCIENCE DATA
(2023)
Article
Geology
Michal Rakocinski, Michal Zaton, Leszek Marynowski, Przemyslaw Gedl, Jens Lehmann
CRETACEOUS RESEARCH
(2018)
Article
Geology
Christina Ifrim, Ines Wendler, Jens Lehmann
CRETACEOUS RESEARCH
(2018)
Editorial Material
Geology
Michal Rakocinski, Michal Zaton, Leszek Marynowski, Przemyslaw Gedl, Jens Lehmann
CRETACEOUS RESEARCH
(2019)
Article
Geology
Jens Lehmann, Abdolmajid Mosavinia, Markus Wilmsen
CRETACEOUS RESEARCH
(2019)
Review
Geology
Mabrouk Bachari, Daniele Grosheny, Serge Ferry, Christian France-Lanord, Mohamed Hedi Negra
CRETACEOUS RESEARCH
(2019)
Article
Geosciences, Multidisciplinary
Rene Hoffmann, Sylvia Riechelmann, Kathleen A. Ritterbush, Jennifer Koelen, Nathalie Luebke, Michael M. Joachimski, Jens Lehmann, Adrian Immenhauser
Article
Geology
Jens Lehmann, Martin Simpson, H. Mark Bayliss
PROCEEDINGS OF THE GEOLOGISTS ASSOCIATION
(2020)
Article
Geology
Jai Prakash Gautam, Bindhyachal Pandey, Anand Kumar Jaitly, Deo Brat Pathak, Jens Lehmann, Deep Narayan Tiwari
CRETACEOUS RESEARCH
(2019)
Article
Geosciences, Multidisciplinary
Senda Boughalmi, Mohamed Hedi Negra, Daniele Grosheny, Yves Geraud, Moncef Saidi
ARABIAN JOURNAL OF GEOSCIENCES
(2019)
Article
Geology
J. Jaballah, M. H. Negra, J. J. G. Reijmer
CRETACEOUS RESEARCH
(2020)
Article
Geology
John Cawley, Jens Lehmann, Frank Wiese, Juergen Kriwet
CRETACEOUS RESEARCH
(2020)
Article
Geosciences, Multidisciplinary
Mohamed Hedi Negra, Jalel Jaballah
ARABIAN JOURNAL OF GEOSCIENCES
(2020)
Article
Geology
Jens Lehmann, H. Mark Bayliss
Summary: Tropaeum (Tropaeum) evolutum is a new species characterized by remarkably evolute coiling, with a body-chamber of rather more than half a whorl and fourteen widely spaced primaries.
CRETACEOUS RESEARCH
(2022)
Article
Geosciences, Multidisciplinary
Mabrouk Bachari, Mohamed Hedi Negra, Yves Geraud, Daniele Grosheny, Akrem Soltani
Summary: A multidisciplinary study of Turonian-Coniacian reservoir analogues in the Jebel Serj-Bargou area in northern-central Tunisia has led to the establishment of detailed layering within these reservoir rocks, revealing layers with high reservoir potential.
JOURNAL OF AFRICAN EARTH SCIENCES
(2022)
Article
Geosciences, Multidisciplinary
Senda Boughalmi, Yves Geraud, Daniele Grosheny, Sonia Ben Alaya, Mohamed Hedi Negra
Summary: Microstructural features, particularly pore size, play a crucial role in determining the petrophysical properties of rocks when non-wetting fluids saturate the reservoir. In this study, the pore networks and physical properties of different rock types from a productive Upper Cretaceous (Coniacian) reservoir in the Tunisian offshore were measured using hydrocarbon-washed samples. The results showed that the porous facies of the Coniacian Douleb Member exhibit a complex pore system with a large morphological and pore size variability in the rock. The best petrophysical characteristics were observed in the oil-impregnated facies of rudist-rich limestones and dolomites.
BSGF-EARTH SCIENCES BULLETIN
(2023)