Article
Geography, Physical
Luca Zurli, Gianluca Cornamusini, Giovanni Pio Liberato, Paolo Conti
Summary: The Late Paleozoic Ice Age is one of the coldest periods in Earth history, and the glacial sedimentation in the Tasmanian Basin recorded the advance and retreat of the glacial front during different phases of this period.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2022)
Article
Geosciences, Multidisciplinary
Marie Olivier, Sylvie Bourquin, Guy Desaubliaux, Celine Ducassou, Camille Rossignol, Gautier Daniau, Dan Chaney
Summary: This study investigates the evolution of depositional environments in the Late Pennsylvanian-early Permian of the Paradox Basin in Utah, USA, through detailed sedimentological and high-resolution sequence stratigraphic analyses. The study aims to define a model of landscape evolution, discuss the stratigraphic model, and evaluate the significance of cyclicity in the paleoclimatic context. The findings reveal complex interactions between aeolian, fluvial, and marine environments in the Permian succession of the Paradox Basin, and highlight the importance of high-resolution stratigraphic analyses in understanding cyclicity in the Late Paleozoic Ice Age paleoclimatic context.
Article
Geochemistry & Geophysics
Noah F. Hobbs, Jolante W. van Wijk, Ryan Leary, Gary J. Axen
Summary: The interplay between late Paleozoic tectonics at the marginal and intraplate regions of southeastern Laurentia is a subject of debate. This study focuses on the analysis of the Southern Oklahoma Transpressional System (SOTS), a fault zone that extends from the southeastern Laurentian margin into the plate interior. The researchers utilize sedimentary thickness maps and seismic reflection data to reveal the kinematics and driving mechanisms behind the SOTS fault zones.
Article
Geosciences, Multidisciplinary
Tingting Wang, Jian Cao, Alan R. Carroll, Dongming Zhi, Yong Tang, Xulong Wang, Yuwen Li
Summary: This paper presents a comprehensive data set on sodium carbonate evaporites found in the Fengcheng Formation in northwestern China, offering insights into their mineralogy, age, and formation processes. The study suggests that these deposits were formed in extensional grabens hosting hypersaline lakes, which were influenced by coeval volcanic activity.
GEOLOGICAL SOCIETY OF AMERICA BULLETIN
(2021)
Article
Geosciences, Multidisciplinary
E. M. Mahon, M. W. Wallace
Summary: The well-developed clastic shoreline systems in the Gippsland Basin have been deposited over a period of 70 million years, showing a variety of coastal units influenced primarily by basin subsidence. Despite changes in tectonics and palaeoclimate, basin subsidence appears to be the dominant driver for changes in shoreline location.
Article
Geosciences, Multidisciplinary
Sarah K. Schultz, James A. MacEachern, Octavian Catuneanu, Shahin E. Dashtgard, Nakari Diaz
Summary: This study presents a high-resolution sequence stratigraphic framework for the Viking Formation, a stratigraphically complex unit in the Western Canada Sedimentary Basin. By mapping and describing the formation using a depositional sequence IV nomenclature, the study identifies four systems tracts and discusses the architecture of deposits in each sequence. Additionally, the study identifies four additional stratigraphic plays that have been overlooked in previous exploration efforts. This high-resolution framework provides valuable insights for future petroleum exploration in the basin.
MARINE AND PETROLEUM GEOLOGY
(2022)
Article
Geosciences, Multidisciplinary
Hassan Nasir Mangi, Ruan Chi, Jun Zhao, Detian Yan, Lara Sindhu, Dongsheng He, Zixin He, Jing Li, Umar Ashraf, Hongbo Wang
Summary: The author studied the thick coal seam in the Lower Indus Basin using various scientific methods and found that the depositional system includes shallow marine sequences, and wet-dry cyclic conditions are the main factor in the formation of the thick coal seam.
NATURAL RESOURCES RESEARCH
(2023)
Article
Geosciences, Multidisciplinary
Wenwen Li, Jian Cao, Dongming Zhi, Yong Tang, Wenjun He, Tingting Wang, Liuwen Xia
Summary: Understanding the potential and controls on shale oil accumulation in alkaline lacustrine settings is crucial for global shale oil budget evaluation. Fine-grained sedimentary rocks in alkaline lacustrine settings, particularly argillaceous dolomite and pyroclastic rocks, show high shale oil potential with good hydrocarbon generation potential and abundant fractures and pores. Further studies are needed to precisely evaluate shale oil potential in relation to TOC and explore new proxies and standards.
MARINE AND PETROLEUM GEOLOGY
(2021)
Article
Geosciences, Multidisciplinary
Guoyong Liu, Rui Zhang, Xiangwu He, Ren Wei, Rukai Zhu, Yong Tang, Wenjun He, Menglin Zheng, Qiusheng Chang, Ran Wang, Xinmei Zhao
Summary: The Late Paleozoic Fengcheng Formation in the Mahu Sag of the Junggar Basin, China, contains the oldest alkaline lake hydrocarbon source rocks in the world. Spectral analysis of natural gamma-ray series from four boreholes revealed that the formation was influenced by Early Permian astronomical cycles, including long and short eccentricity, obliquity, and precession. These cycles helped divide and correlate sedimentary sequences in lacustrine shales and identified base-level cycles in the P(1)f(1) and P(1)f(2) members of the Fengcheng Formation. The use of astronomical cycles in stratigraphic correlation can accurately characterize alkaline lacustrine sequences and predict favorable areas for shale oil exploration.
FRONTIERS IN EARTH SCIENCE
(2023)
Article
Geography, Physical
Antun Husinec, Lukas A. Harvey
Summary: This study improves understanding of the climatic and sea-level fluctuations during the Late Ordovician late Katian period by analyzing a dataset from the subsurface of North Dakota. It reveals the impact of climate and sea-level regimes on depositional dynamics and sequence architecture in a tropical epicontinental basin setting.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2021)
Article
Geosciences, Multidisciplinary
Mei Mei, Alan K. Burnham, Noelle Schoellkopf, Johannes Wendebourg, Francois Gelin
Summary: Improved understanding and prediction of petroleum expulsion, retention, and producibility from source rocks in the Lower Vaca Muerta Formation in the Neuquén Basin, Argentina were achieved through the integration of 3D basin modeling with customized compositional kinetics and retention modeling. The modeling results demonstrate basin-wide petroleum expulsion starting in the late Cretaceous and ceasing in the mid-Eocene, with different types of expulsion occurring at different thermal maturity levels, leading to changes in rock properties and petroleum composition.
MARINE AND PETROLEUM GEOLOGY
(2021)
Article
Geosciences, Multidisciplinary
Dawei Lv, Yangyang Shen, A. J. Tom van Loon, Munira Rajid, Zhihui Zhang, Guangzeng Song, Zhouhe Ren, Yujia Wang, Dongdong Wang
Summary: The Yan'an Formation in the Ordos Basin is a significant coal reservoir in the Jurassic period. The investigation of its lacustrine context reveals that coal development was influenced by fluctuations in lake level. The findings contribute to the understanding of coal formation theory and improve coal exploitation efficiency in basins like the Ordos Basin.
FRONTIERS IN EARTH SCIENCE
(2023)
Article
Geography, Physical
Thomas Filek, Felix Hofmayer, Iris Feichtinger, Bjoern Berning, Juergen Pollerspoeck, Jennifer Zwicker, Daniel Smrzka, Joern Peckmann, Matthias Kranner, Oleg Mandic, Bettina Reichenbacher, Andreas Kroh, Alfred Uchman, Reinhard Roetzel, Mathias Harzhauser
Summary: The study re-evaluated the fossil fauna and flora, as well as lithology of the Eferding Formation in Upper Austria. It showed the impact of sea-level fluctuations on marine biota and terrestrial climate, with the presence of phosphatic nodules indicating eutrophication in the coastal environment.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2021)
Article
Geology
Henrique Parisi Kern, Ernesto Luiz Correa Lavina, Paulo Sergio Gomes Paim, Tiago Jonatan Girelli, Cristiano Lana
Summary: The end of the Permian in southwestern Gondwana marked a significant change in depositional context, with the last invasion of the Panthalassa Ocean and subsequent retreat, leading to desert conditions. This paper provides a detailed paleogeographic evolution of the Parana Basin's southern portion, showing a large regression with important facies shifts. The provenance zircon U-Pb analysis suggests sediment sources from the Brasiliano basement and Gondwanides mountain ridge, reflecting tectonic reorganization near the Permo-Triassic boundary.
SEDIMENTARY GEOLOGY
(2021)
Article
Geosciences, Multidisciplinary
Dillon Jared Newitt, Per Kent Pedersen
Summary: This study reveals the opposite parasequence stacking pattern of the Spirit River Formation compared to traditional sequence stratigraphic models. Detailed logging and analysis uncover the influence of local basin controls on the stacking patterns. Understanding these controls enhances the development of unconventional resources in clastic wedges.
MARINE AND PETROLEUM GEOLOGY
(2022)
Article
Geosciences, Multidisciplinary
Peter Zabala Medina, Carlos Limarino, Nestor Bonomo, Salome Salvo Bernardez, Ana Osella
JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
(2020)
Article
Geosciences, Multidisciplinary
C. O. Limarino, S. R. Giordano, R. J. Rodriguez Albertani, P. L. Ciccioli, F. Bodan
JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
(2020)
Article
Geology
Isabel Mendez-Bedia, Gloria Gallastegui, Pedro Busquets, Silvia N. Cesari, Carlos O. Limarino, Eva Prats, Raul Cardo, Ferran Colombo
Article
Geosciences, Multidisciplinary
Carlos O. Limarino, S. A. Marenssi, S. N. Cesari, P. L. Ciccioli
Summary: Sea-level changes and climatic conditions related to the Gondwanan glaciation played important roles in the formation of coals and coaly mudstones in the Paganzo Basin. Three main transgressive events were identified in the basin.
JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
(2021)
Article
Geosciences, Multidisciplinary
Kathryn N. Pauls, John L. Isbell, C. Oscar Limarino, Pablo J. Alonso-Murauga, David H. Malone, L. Jazmin Schencman, Carina E. Colombi, Levi D. Moxness
Summary: The western margin of Gondwana shows evidence of late Carboniferous glaciation, with uncertainty regarding the specific locations, extent, and depositional centers of the glaciers. New research and analysis indicate that the sediments in the basin were deposited under cold climatic conditions, with glaciers confined to the western portion of the basin.
JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
(2021)
Article
Geosciences, Multidisciplinary
Patricia L. Ciccioli, Carlos O. Limarino, John L. Isbell, Arturo C. Taboada, Maria A. Pagani, Erik L. Gulbranson
JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
(2020)
Article
Geosciences, Multidisciplinary
Carlos O. Limarino, Oscar R. Lopez-Gamundi
Summary: In the last decade, significant advances have been made in the geological knowledge of the late Paleozoic basins of southern South America, particularly in the areas of paleogeographic models, distribution of glacial deposits, paleoclimatic evolution, and biostratigraphy.
JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
(2021)
Article
Geosciences, Multidisciplinary
V. S. Perez Loinaze, S. R. Giordano, C. O. Limarino
Summary: A lithofacial and palynological study was conducted on the Can?ad?on Seco Formation in the La Frieda Oeste x-1 well in the Golfo San Jorge Basin, revealing four main lithofacies and suggesting a Turonian?Coniacian age based on the palynological assemblage. The study indicates temperate to warm and humid conditions during a little known period in the evolution of angiosperms in the southern region of Gondwana.
JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
(2021)
Article
Geosciences, Multidisciplinary
Oscar Lopez-Gamundi, Carlos O. Limarino, John L. Isbell, Kathryn Pauls, Silvia N. Cesari, Pablo J. Alonso-Muruaga
Summary: The southwestern margin of South America presents a comprehensive record of the Late Paleozoic Ice Age (LPIA) that affected the Gondwana supercontinent, refined into five discrete glacial events primarily occurring in marine environments. The paleofjord model has been confirmed in the Protoprecordillera with stages of valley incision, subglacial diamictite deposition, early and late transgressive events, and highstand with deltaic progradation. This glacial chronology reflects common tripartite motifs and is characterized by deglaciation sequences transitioning into postglacial conditions, demonstrating the complex interplay between glacial and marine processes in the region.
JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
(2021)
Article
Plant Sciences
Silvia N. Cesari, Carlos O. Limarino, Sergio Marenssi, Patricia L. Ciccioli, Fanny C. Bello, Luis C. Ferreira, Leonardo R. Scarlatta, Richard Friedman
Summary: Palynology is a useful tool for constructing biostratigraphic charts in late Paleozoic South American basins. This study focuses on describing new Argentinian palynological assemblages and applying a new isotopic age to constrain the age of the LW Biozone in the Paganzo Basin. The study enables more confident large-scale correlations with neighboring basins and provides insight into the composition of the Lueckisporites virkkiae record in Gondwana.
Article
Geosciences, Multidisciplinary
Carlos O. Limarino, Patricia L. Ciccioli, Sergio Marenssi, Silvia N. Cesari, Richard Friedman
Summary: This study investigates the relationship between sedimentation in the retroarc Paganzo Basin and the magmatic arc activity in the Andean Cordillera during the Late Pennsylvanian-Cisuralian. By analyzing sedimentology, geochronology, and biostratigraphy, the researchers identified different sedimentary facies in the De La Cuesta Formation, indicating changes in paleoenvironments over time. The U-Pb age of 278.84 Ma obtained from the uppermost part of the formation supports a Kungurian age and correlates the sedimentation in the retroarc with the onset of Choiyoi Volcanism in the magmatic arc.
JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
(2021)
Article
Geosciences, Multidisciplinary
Carina Colombi, Ricardo N. Martinez, Silvia N. Cesari, Oscar Alcober, Carlos O. Limarino, Isabel Montanez
Summary: The Late Triassic period captures significant life crises related to environmental changes during the Pangea breakup, with the Ischigualasto Formation recording the Triassic Dinosaur Diversification Event and key terrestrial environmental shifts. This period of environmental modification and faunal turnover is precisely dated to about 228.91 +/- 0.14 Ma, providing insights into the series of environmental-biological disturbances leading to the end of the Triassic.
JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
(2021)
Article
Plant Sciences
Silvia N. Cesari, Carlos O. Limarino, Patricia L. Ciccioli, Corey Wall
Summary: This study reports continuous fossil records from the upper Palaeozoic basins of central-western Argentina spanning the late Permian to early Triassic. The newly discovered palynofloras from the La Veteada Formation are identified as Lopingian in age and exhibit characteristics of post-Permian recovery plant assemblages worldwide. The use of a new uranium-lead chemical abrasion-isotope dilution-thermal ionization mass spectrometry (U-Pb CA-ID-TIMS) age confirms the Olenekian age of this stratigraphic unit and identifies the first Early Triassic palynofloras in the western Gondwana region.
Article
Geosciences, Multidisciplinary
Luis A. Spalletti, Carlos O. Limarino, Ferran Colombo, Patricia L. Ciccioli, Carina E. Colombi
Summary: This study analyzes the behavior of the Valle Fe ' rtil Lineament, a structural element in northwest Argentina, during the late Paleozoic. Three different lines of research were followed, including the analysis of compositional changes, the interpretation of soft-sediment deformation, and the analysis of stratigraphic relationships. The study provides insights into tectonic instability and the presence of volcanic activity in the area.
JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
(2023)
Article
Plant Sciences
Silvia N. Cesari, Carlos O. Limarino, Sergio Marenssi, Patricia L. Ciccioli, Fanny C. Bello, Luis C. Ferreira, Leonardo R. Scarlatta, Richard Friedman
Summary: This paper describes new Argentinian palynological assemblages in the late Paleozoic basins of South America, specifically focusing on the Lueckisporites/Weylandites (LW) Biozone. By applying a new isotopic age, the study enables more confident large-scale correlations with the neighboring Parana Basin of Brazil. The recovered palynofloras and the U-Pb CA-ID-TIMS age of 278.84 +/- 0.22 Ma provide important insights into the age constraints and correlations in the region.
Article
Geosciences, Multidisciplinary
David Dominguez-Santos, Daniel Valderrama, Ahmet Utku Yazgan
Summary: This document presents a study comparing the spectra of large-magnitude seismic records in Chile between 2012 and 2022 with the design spectra of NCh433 and D. S 61. The aim is to determine if Chile's seismic-resistant regulations are updated to the existing reality and propose new design spectra that better represent the seismic activity in Chile during the last decade.
JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Prabhu Palanisamy, Vivek Sivakumar, Priya Velusamy, Logesh Natarajan
Summary: Shoreline changes in the southern coast of Rio de Janeiro, Brazil, were analyzed from 1986 to 2018. The study found that both natural and human factors significantly impact shoreline changes. The findings provided important insights into predicting future shoreline positions and identifying vulnerable regions. Additionally, human activities were found to influence shoreline change models, emphasizing the need for effective management strategies to protect ecosystems and communities.
JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Irina Salgado Bernal, Periyasamy Sivalingam, Armando Martinez Sardina, Michel Manduca Artiles, Maria E. Carballo Valdes, John Pote
Summary: This study investigated the presence of 15 toxic metals in surface sediment in a tropical river ecosystem in Cuba. The results showed that the sediments had higher concentrations of four metals compared to Cuban norms. Various contamination indices were calculated, and correlations analysis revealed the main sources of contamination. The study provides important information for the management of the river and emphasizes the need for metal pollution control and monitoring.
JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Camila Morgan, Eduardo Morgado, Miguel-Angel Parada, Raimundo Brahm, Francisca Mallea-Lillo
Summary: Lanin volcano is a composite volcano in the Andes, which has erupted lava flows with different compositions. The volcano's magma reservoir contains a crystal mush, and the pre-eruptive conditions include temperature, pressure, and oxygen fugacity. Fractional crystallisation has led to the evolution of the magma with different compositions.
JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Benjamin Idini, Sergio Ruiz, Jean-Paul Ampuero, Felipe Leyton, Efrain Rivera
Summary: This study investigates the role of wedge integrity on the frequency content of strong ground motion produced by subduction earthquakes in Northern Chile. The results show that the frequency characteristics of seismic waves vary with hypocentral distance, indicating lateral variations in anelastic attenuation due to the heterogeneous tectonic structure.
JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
(2024)