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
Geology
T. E. Mottin, F. F. Vesely, R. Iannuzzi, N. P. Griffis, I. P. Montanez
Summary: The glacial-to-postglacial turnover in the eastern belt of the Paraná Basin in Brazil is found to be diachronous and progressively older southward. Sedimentological, paleontological and geochemical data were used to decipher the timing and paleoclimatic scenarios of this transition. The study revealed that there were two early Permian glacial episodes, with the younger one disappearing southward.
SEDIMENTARY GEOLOGY
(2023)
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
Geology
Ke Pang, Chengxi Wu, Yunpeng Sun, Qing Ouyang, Xunlai Yuan, Bing Shen, Xianguo Lang, Ruimin Wang, Zhe Chen, Chuanming Zhou
Summary: This study reports a newly discovered terminal Ediacaran biotic assemblage in northwestern China, containing Ediacara-type fossils. The co-occurrence of these fossils helps constrain the depositional age and reveals the late Ediacaran glaciation.
Article
Geography, Physical
Michael Klinge, Frank Schluetz, Anja Zander, Daniela Huelle, Ochirbat Batkhishig, Frank Lehmkuhl
Summary: Glacial and lacustrine sediments from the Mongolian Altai provide paleoclimatic information for the late Pleistocene in Mongolia, indicating an increase in precipitation triggered glacier development, while sparse vegetation in arid regions indicates dry conditions.
QUATERNARY RESEARCH
(2021)
Article
Energy & Fuels
Jiri Bek, Stanislav Oplustil, Jana Drabkova
Summary: The dispersed miospore and pollen assemblages from the Krkonose-Piedmont Basin were described from different formations, showing a trend of increasing number of monolete miospores and pollen with stratigraphic age. The most typical genera and species in the assemblages were identified, along with comparisons with other Czech and European coalfields and basins.
INTERNATIONAL JOURNAL OF COAL GEOLOGY
(2022)
Article
Geosciences, Multidisciplinary
Tingting Wang, Jian Cao, Jun Jin, Liuwen Xia, Baoli Xiang, Wanyun Ma, Wenwen Li, Wenjun He
Summary: This study focused on the Late Paleozoic Fengcheng Formation in the Junggar Basin, NW China, using organic and inorganic geochemical methods. Results indicate that the formation was deposited in an anoxic, hypersaline, stratified lacustrine environment with higher freshwater influx in the upper part. The spatiotemporal evolution of alkaline lakes is shown to be multi-stage and heterogeneous, influenced by hydrothermal and volcanic activities under restricted conditions and a dry climate.
MARINE AND PETROLEUM GEOLOGY
(2021)
Article
Geography, Physical
Mariano Verde, Renata Guimaraes Netto, Diana Azurica, Ernesto L. Lavina, Mercedes Di Pasquo
Summary: The grazing trails found in the Tacuati Formation in northern Uruguay, previously thought to be the oldest evidence of bilaterians, have been re-evaluated. A diverse and abundant invertebrate trace fossil assemblage, including arthropods, has been discovered in the same beds, suggesting a Carboniferous-Permian age. This indicates that the strata are not from the Ediacaran period and actually belong to the Upper Paleozoic Gondwanan glacial deposits in Uruguay. The ichnofauna found in these deposits is similar to those found in Late Paleozoic Ice Age deposits in Brazil, Argentina, and South Africa.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2022)
Article
Geosciences, Multidisciplinary
Jinkai Xia, Ziqi Zhong, Shaoying Huang, Caiming Luo, Hong Lou, Haining Chang, Xiang Li, Lunyan Wei
Summary: The Tarim basin is a complex sedimentary basin that has undergone multiple and polycyclic tectonic movements. Understanding its prototype basin and tectono-paleogeographic evolution is crucial for understanding the tectonic systems and hydrocarbon exploration. This paper provides maps and illustrations to depict the tectonic and paleogeographic features of the Tarim basin during the Late Paleozoic.
FRONTIERS IN EARTH SCIENCE
(2023)
Article
Geology
Yang XiaoPing, Ma JiangShui, Pang XueJiao, Yang YaJun, Jang Bing, Fu JunYu
Summary: The reconstruction of the trench-arc-basin system in the Duobaoshan island arc belt is important for understanding the geological setting of ore-forming processes and future resource prospecting. This study focuses on the stratigraphical and petrological analysis of the Duobaoshan and Tongshan formations, establishing their formation age and stratigraphic sequence. Additionally, the Early Paleozoic stratigraphical system of the Duobaoshan island arc belt is reestablished, providing insights into the metallogenic areas of the magmatic arcs.
ACTA PETROLOGICA SINICA
(2022)
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
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
Geology
John L. Isbell, Nicholas D. Fedorchuk, Eduardo L. M. Rosa, Cesar Goso, Pablo J. Alonso-Muruaga
Summary: The Whalebacks, roche moutonnees, and S-forms found in the Ediacaran granitoids near Cerro de las Cuentas in Uruguay, along with overlying sedimentary rocks, record the glacial to post-glacial transition in the linked basins of Uruguay, Brazil, and Argentina. These landforms indicate temperate glacial conditions and were formed under varying ice thicknesses. The presence of subglacial waters and meltwater discharge is also evident in the sedimentary rocks. The importance of these findings is rated 8 out of 10.
SEDIMENTARY GEOLOGY
(2023)
Article
Geosciences, Multidisciplinary
Yanyang Wang, Bei Xu, Shiyu Song, Pan Zhao, Jiaming Zhang, Linjie Yan
Summary: Based on sedimentary structure, petrology, and sequence analysis in the West Ujimqin basin, late Carboniferous to Permian sedimentary facies are divided into four systems which fill the basin in three stages.
Article
Geosciences, Multidisciplinary
Patrick J. Gannon, M. Elliot Smith, Paul J. Umhoefer, Ryan J. Leary
Summary: This study examines the deep marine deposition during the late Pennsylvanian-Early Permian period in eastern California and reveals the variations in sediment accumulation rates. It also proposes a new division of the Estelle Member and suggests a link between sediment accumulation rates and flexural subsidence.
GEOLOGICAL SOCIETY OF AMERICA BULLETIN
(2022)
Article
Plant Sciences
Sol Noetinger, Mercedes di Pasquo, Daniel Starck
REVIEW OF PALAEOBOTANY AND PALYNOLOGY
(2018)
Article
Biology
Srikanta Murthy, Pauline Sabina Kavali, Mercedes Di Pasquo, Bhaskar Chakraborti
HISTORICAL BIOLOGY
(2020)
Article
Plant Sciences
F. J. Parra, R. E. Navarrete, M. M. di Pasquo, M. Roddaz, Y. Calderon, P. Baby
Article
Geosciences, Multidisciplinary
Juan Pablo Milana, Mercedes Di Pasquo
JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
(2019)
Article
Geosciences, Multidisciplinary
Angeles Beri, Ximena Martinez-Blanco, Luciano Varela, Mercedes di Pasquo, Paulo Alves de Souza
JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
(2020)
Article
Geosciences, Multidisciplinary
L. Fernandez Pacella, G. G. Zacarias, M. Di Pasquo
JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
(2020)
Article
Geography, Physical
Mercedes di Pasquo, George W. Grader, Marcelina Kondas, P. Ted Doughty, Pawel Filipiak, Beverly J. Rice, Peter E. Isaacson
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2019)
Article
Geography, Physical
Victoria Valdez Buso, Juan Pablo Milana, Mercedes di Pasquo, Paulo Sergio Gomes Paim, Ruy Paulo Philipp, Carolina Danielski Aquino, Joice Cagliari, Farid Chemale Junior, Ben Kneller
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2020)
Article
Paleontology
Lionel Fernandez Pacella, Mercedes Di Pasquo
REVISTA BRASILEIRA DE PALEONTOLOGIA
(2020)
Article
Plant Sciences
Pawel Filipiak, Marcelina Kondas, Mercedes di Pasquo, Beverly J. Rice, P. Ted Doughty, George W. Grader, Peter E. Isaacson
Summary: Palynological investigation of samples from the Unit 1 of the Sappington Formation in Montana, USA, identified a new taxon, Involusphaeridium gutschicki gen. et sp. nov., which is proposed to have links with algal or fungal groups, as well as possibly with arthropod eggs.
REVIEW OF PALAEOBOTANY AND PALYNOLOGY
(2021)
Article
Paleontology
Michal Zaton, Mingxi Hu, Mercedes di Pasquo, Paul M. Myrow
Summary: A new genus and species of microconchid tubeworm, Aculeiconchus sandbergi n. gen. n. sp., is described from the Givetian (Devonian) Maywood Formation of Cottonwood Canyon, Wyoming, USA. This study reveals the previously undocumented adaptive strategy of hollow spines on the tube underside in microconchids, suggesting a possible phylogenetic relationship with cyclostome bryozoans. The occurrence of microconchids in the Maywood Formation provides insights into their opportunistic colonization and adaptive innovations in estuarine environments.
JOURNAL OF PALEONTOLOGY
(2022)
Article
Geology
Egly Perez Pincheira, Mercedes di Pasquo
Summary: The palynology of the Jaguel Formation in the Neuquen Basin, Argentina, was studied to define three palynological associations: A1 (upper Maastrichtian), A2, and A3 (Danian). The results showed that A1 was deposited in mixed to shallow marine environments, while A2 and A3 were deposited in coastal lagoons near shallow marine environments. The Danian assemblages at this site contain a large number of palm pollen grains.
CRETACEOUS RESEARCH
(2021)
Article
Multidisciplinary Sciences
Marcela Quetglas, Cecilia Macluf, Mercedes Di Pasquo
ANAIS DA ACADEMIA BRASILEIRA DE CIENCIAS
(2019)
Article
Multidisciplinary Sciences
Mercedes Di Pasquo, Pauline S. Kavali, Rodolfo Dino, Mahesh Shivanna, Mary Elizabeth Bernardes-De-Oliveira, Anirban Roy
Summary: Faunipollenites Bharadwaj is confirmed as a junior synonym of Protohaptoxypinus, with Indian workers considering it a valid genus. The presence or absence of distinct central body and folds in the distal attachment did not show significant differences between samples with longer and shorter oxidation treatment.
ANAIS DA ACADEMIA BRASILEIRA DE CIENCIAS
(2021)
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)