Article
Geosciences, Multidisciplinary
Xudong Chen, Qilu Xu, Fang Hao, Yongquan Chen, Yan Yi, Fangjie Hu, Xiaoxue Wang, Jinqiang Tian, Guangwei Wang
Summary: This study systematically analyzed the lithofacies, reservoir space, and formation mechanism of the upper Ediacaran dolomite reservoirs in the Tabei area. It found that the dolomite can be divided into five major categories and identified the main types of reservoir space. High-frequency sedimentary cycles and meteoric dissolution were found to be key factors in reservoir formation. The quality of the deep reservoir depends on the geological events affecting pore reduction and increase.
SCIENCE CHINA-EARTH SCIENCES
(2023)
Article
Geosciences, Multidisciplinary
L. Morais, T. R. Fairchild, B. T. Freitas, I. D. Rudnitzki, E. P. Silva, D. Lahr, A. C. Moreira, E. A. Abrahao Filho, J. M. Leme, R. I. F. Trindade
Summary: Acritarchs, as acid-resistant organic-walled microfossils, dominate the eukaryotic microfossil record in the Proterozoic but show reduction in diversity and size in the Phanerozoic. Changes in their complexity and diversity over time allow their use in paleoecological and biostratigraphic schemes. Their distribution in different formations reflects environmental and taphonomic differences.
FRONTIERS IN EARTH SCIENCE
(2021)
Article
Geosciences, Multidisciplinary
Pan Tang, Daizhao Chen, Yuanzheng Wang, Yi Ding, Moataz El-Shafeiy, Bo Yang
Summary: This study focuses on the diagenetic processes of microbialites in the Tarim Basin, highlighting the importance of microbial mat deposition, early dolomitization, and meteoric karst leaching in controlling the development of high quality reservoirs. Among the microbialites studied, spongiomicrobialites exhibit better petrophysical properties with higher porosity and permeability. The findings provide insights into the reservoir properties of microbialites and could serve as an analog for similar reservoirs in other regions of China.
MARINE AND PETROLEUM GEOLOGY
(2022)
Article
Geosciences, Multidisciplinary
Chen Shen, Mark Schmitz, Peter Johnson, Joshua H. F. L. Davies, Galen P. Halverson
Summary: This study reports new high-precision U-Pb zircon ages from the Muraykhah Formation and analyzes the cyclical features of these rocks using astrochronology. The data provides a continuous, tuned record that offers new constraints on the geological events in the early Ediacaran period.
PRECAMBRIAN RESEARCH
(2022)
Article
Geochemistry & Geophysics
Yongjie Hu, Chunfang Cai, Dawei Liu, Yanyan Peng, Tianyuan Wei, Ziwen Jiang, Rongtu Ma, Lei Jiang
Summary: This study distinguishes pyrites generated by microbial sulfate reduction (MSR) from thermochemical sulfate reduction (TSR) based on analyses on barite, pyrite, calcite, and dolomite for carbon and sulfur isotopes, and REY compositions. MSR-derived pyrites show seawater-like REY patterns and superchondritic Y/Ho ratios, with wide range of delta S-34 values correlated with arsenic contents, possibly through cryptic sulfur cycles driven by arsenic. TSR-derived pyrites have non-seawater-like REY patterns, chondritic Y/Ho ratios, and small sulfur isotopic fractionations, with associated calcites showing LREE enrichment and negative delta C-13 values. The combination method from REY patterns, delta C-13 and delta S-34 values on micro-sized pyrite and associated calcites effectively distinguishes MSR from TSR.
Article
Geosciences, Multidisciplinary
Cleber Q. C. Diniz, Juliana de Moraes Leme, Paulo C. Boggiani
Summary: The Tamengo Formation in South America is significant for its Ediacaran fossils and geochemistry data. This study introduces three new species of macroalgae, contributing to the understanding of the evolutionary history of macroalgae and paleoecological settings during the Late Ediacaran period.
FRONTIERS IN EARTH SCIENCE
(2021)
Article
Multidisciplinary Sciences
Jun Liu
Summary: The study focused on dicynodont fossils from the Naobaogou Formation in Nei Mongol, China, identifying a new species of dicynodontoid genus Turfanodon. The new species, Turfanodon jiufengensis, exhibits distinct characteristics that differentiate it from other Turfanodon species. As the first confirmed tetrapod genus shared by the late Permian faunas of the Junggar and Ordos basins, Turfanodon appears to have a wide distribution across different climatic zones.
Article
Geography, Physical
Lichao Wang, Guang Hu, Dongfang Zhao, Xiucheng Tan, Hongyuan Wang
Summary: The study investigated dolomitic microbialites in the late Ediacaran of the Upper Yangtze Platform in China, revealing unique microbial structures and the composition of dolomite cements. By studying different features, it is inferred that these microbialites were deposited in a subtidal to intertidal setting.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2022)
Article
Geosciences, Multidisciplinary
Sergey Rud'ko, Anton B. Kuznetsov, Peter Yu Petrov, Daria R. Sitkina, Olga K. Kaurova
Summary: The Ura uplift section in southern Middle Siberia is crucial for studying climatic changes and evolutionary events of the Ediacaran period. The results provide the first geochronological confirmation of the Ediacaran age of post-glacial deposits in the Dal'nyaya Taiga Group, along with restrictions on the timing of delta C-13 anomalies and acanthomorph acritarchs diversification in Siberia.
PRECAMBRIAN RESEARCH
(2021)
Article
Physics, Multidisciplinary
Kaihua Ji, Elaheh Dorari, Amy J. Clarke, Alain Karma
Summary: We introduce a new phase-field model that accurately captures the nonequilibrium effects at the solid-liquid interface in rapid alloy solidification. Simulations reveal a new dynamical instability of dendrite growth caused by solute trapping at high velocities. The model also reproduces the formation of banded microstructures and predicts quantitative agreement with experimental observations in Al-Cu thin films.
PHYSICAL REVIEW LETTERS
(2023)
Article
Geosciences, Multidisciplinary
Maria E. A. F. Ramos, Martino Giorgioni, Detlef H. G. Walde, Dermeval A. do Carmo, Gabriella Fazio, Lucieth C. Vieira, Matheus Denezine, Roberto V. Santos, Rodrigo R. Adorno, Lucas Lage Guida
Summary: This study focuses on the detailed lithofacies and stable isotopes data of the Tamengo Formation in Brazil, revising the paleoenvironmental and stratigraphic interpretation. The differences between the Corcal and Laginha sections are attributed to different distances from the shore.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Multidisciplinary Sciences
Mingyi Wang, Mao Xiao, Barbara Bertozzi, Guillaume Marie, Birte Rorup, Benjamin Schulze, Roman Bardakov, Xu-Cheng He, Jiali Shen, Wiebke Scholz, Ruby Marten, Lubna Dada, Rima Baalbaki, Brandon Lopez, Houssni Lamkaddam, Hanna E. Manninen, Antonio Amorim, Farnoush Ataei, Pia Bogert, Zoe Brasseur, Lucia Caudillo, Louis-Philippe De Menezes, Jonathan Duplissy, Annica M. L. Ekman, Henning Finkenzeller, Loic Gonzalez Carracedo, Manuel Granzin, Roberto Guida, Martin Heinritzi, Victoria Hofbauer, Kristina Hohler, Kimmo Korhonen, Jordan E. Krechmer, Andreas Kuerten, Katrianne Lehtipalo, Naser G. A. Mahfouz, Vladimir Makhmutov, Dario Massabo, Serge Mathot, Roy L. Mauldin, Bernhard Mentler, Tatjana Muller, Antti Onnela, Tuukka Petaja, Maxim Philippov, Ana A. Piedehierro, Andrea Pozzer, Ananth Ranjithkumar, Meredith Schervish, Siegfried Schobesberger, Mario Simon, Yuri Stozhkov, Antonio Tome, Nsikanabasi Silas Umo, Franziska Vogel, Robert Wagner, Dongyu S. Wang, Stefan K. Weber, Andre Welti, Yusheng Wu, Marcel Zauner-Wieczorek, Mikko Sipila, Paul M. Winkler, Armin Hansel, Urs Baltensperger, Markku Kulmala, Richard C. Flagan, Joachim Curtius, Ilona Riipinen, Hamish Gordon, Jos Lelieveld, Imad El-Haddad, Rainer Volkamer, Douglas R. Worsnop, Theodoros Christoudias, Jasper Kirkby, Ottmar Moehler, Neil M. Donahue
Summary: This article investigates the importance of new particle formation in the upper free troposphere on the global cloud condensation nuclei. The study finds that nitric acid, sulfuric acid, and ammonia synergistically form particles at rates much faster than any two of the three components. The study also reveals that co-condensation of ammonia and nitric acid alone can drive the rapid growth of particles to cloud condensation nuclei sizes with trace amounts of sulfate. Additionally, the study shows that these cloud condensation nuclei are highly efficient ice nucleating particles.
Article
Geology
Yaobin Sun, Yunfeng Zhang, Aihua Xi, Yu Tang, Renjie Zhou, Dongxi Liu, Shouchun Chen
Summary: This study investigates the formation of oncolites in the Ediacaran Dengying Formation in the Yangba profile and analyzes the effects of terrigenous input and variations in redox conditions. The findings reveal the microbial origins of oncolites and provide insights into the sea level variations and seawater properties during the Ediacaran Period.
SEDIMENTARY GEOLOGY
(2022)
Article
Multidisciplinary Sciences
Celina A. Suarez, Joseph Frederickson, Richard L. Cifelli, Jeffrey G. Pittman, Randall L. Nydam, Rebecca K. Hunt-Foster, Kirsty Morgan
Summary: The vertebrate fauna from the Holly Creek Formation in Arkansas represents a late Early Cretaceous ecosystem dominated by semi-aquatic forms. It is similar to other late Early Cretaceous assemblages in North America, suggesting a low-diversity, broadly distributed continental ecosystem during this period. This contrasts sharply with the highly diverse ecosystem that emerged by the Cenomanian, highlighting the impact of vicariance driven by Sevier tectonics and climatic changes during the early Late Cretaceous.
Article
Geochemistry & Geophysics
Yongjie Hu, Chunfang Cai, Ying Li, Rui Zhou, Fuchang Lu, Junfeng Hu, Chaobo Ren, Lianqi Jia, Yuanquan Zhou, Kevin Lippert, Adrian Immenhauser
Summary: This paper compares fibrous carbonate cements from the upper Ediacaran and Upper Ordovician of the Tarim Basin, China, and discusses their significance as archives of marine paleoenvironments.
Article
Geosciences, Multidisciplinary
A. V. Shatsillo, N. B. Kuznetsov, V. E. Pavlov, M. A. Fedonkin, N. S. Priyatkina, S. G. Serov, S. V. Rudko
DOKLADY EARTH SCIENCES
(2015)
Article
Geochemistry & Geophysics
S. V. Rud'ko, A. B. Kuznetsov, B. G. Pokrovsky
LITHOLOGY AND MINERAL RESOURCES
(2017)
Article
Geosciences, Multidisciplinary
N. B. Kuznetsov, N. S. Priyatkina, S. V. Rud'ko, A. V. Shatsillo, W. J. Collins, T. V. Romanyuk
DOKLADY EARTH SCIENCES
(2018)
Article
Geochemistry & Geophysics
S. V. Rud'ko
LITHOLOGY AND MINERAL RESOURCES
(2018)
Article
Geology
S. V. Rud'ko, A. B. Kuznetsov, V. K. Piskunov
STRATIGRAPHY AND GEOLOGICAL CORRELATION
(2014)
Article
Geosciences, Multidisciplinary
S. V. Rud'ko, N. B. Kuznetsov, T. V. Romanyuk, E. A. Belousova
DOKLADY EARTH SCIENCES
(2018)
Article
Geosciences, Multidisciplinary
N. S. Priyatkina, N. B. Kuznetsov, S. V. Rud'ko, A. V. Shatsillo, A. K. Khudoley, T. V. Romanyuk, A. V. Maslov
DOKLADY EARTH SCIENCES
(2019)
Article
Geochemistry & Geophysics
S. Rud'ko, N. B. Kuznetsov, E. A. Belousova, T. Romanyuk
Article
Geosciences, Multidisciplinary
N. B. Kuznetsov, E. A. Belousova, W. L. Griffin, S. Y. O'Reilly, T. V. Romanyuk, S. V. Rud'ko
INTERNATIONAL JOURNAL OF EARTH SCIENCES
(2019)
Article
Geochemistry & Geophysics
A. V. Shatsillo, S. V. Rud'ko, I. V. Latysheva, D. V. Rud'ko, I. V. Fedyukin, S. V. Malyshev
IZVESTIYA-PHYSICS OF THE SOLID EARTH
(2019)
Article
Geochemistry & Geophysics
S. V. Rud'ko, A. B. Kuznetsov, P. Yu. Petrov
LITHOLOGY AND MINERAL RESOURCES
(2020)
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
N. M. Levashova, I. V. Golovanova, D. V. Rud'ko, K. N. Danukalov, S. V. Rud'ko, R. Yu. Sal'manova, N. D. Sergeeva
Summary: The study revealed a high reversal frequency in the Upper Vendian Zigan Formation sediments and provided a more accurate estimate of the reversal rate, showing that previous studies had overestimated the geomagnetic reversal frequency.
IZVESTIYA-PHYSICS OF THE SOLID EARTH
(2021)
Article
Geosciences, Multidisciplinary
Sergey Rud'ko, Anton B. Kuznetsov, Peter Yu Petrov, Daria R. Sitkina, Olga K. Kaurova
Summary: The Ura uplift section in southern Middle Siberia is crucial for studying climatic changes and evolutionary events of the Ediacaran period. The results provide the first geochronological confirmation of the Ediacaran age of post-glacial deposits in the Dal'nyaya Taiga Group, along with restrictions on the timing of delta C-13 anomalies and acanthomorph acritarchs diversification in Siberia.
PRECAMBRIAN RESEARCH
(2021)
Article
Geosciences, Multidisciplinary
S. V. Rud'ko, P. Yu. Petrov, A. B. Kuznetsov, A. V. Shatsillo, O. L. Petrov
DOKLADY EARTH SCIENCES
(2017)
