Article
Geography, Physical
Ryan J. Leary, Jay Quade, Michael Read, Gregory P. Wahlman
Summary: Studying the sedimentary rocks in the Monitor Range of central Nevada from lower Permian to Permian-Triassic revealed different sedimentation patterns over time, indicative of potential tectonic changes.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2021)
Article
Geosciences, Multidisciplinary
Ryan B. Anderson, Sean P. Long, Brian K. Horton, Amanda Z. Calle, Emmanuel Soignard
Summary: This study analyzes rocks in the Eastern Cordillera of Bolivia using various methods, proposing a refined tectonic evolution history from pre-Late Paleozoic to Late Cretaceous, including temperature estimation and deformation temperature studies. The results indicate significant geological deformation and erosion events in the region.
Article
Geosciences, Multidisciplinary
David P. West, Emily M. Peterman, Jessica Chen
Summary: The study reveals the tectonic evolution from the Ordovician to the Silurian-Devonian in the mid-coastal region of Maine. The initial terrane juxtapositioning along the east-verging Boothbay thrust fault before 423Ma was followed by the intrusion of ultra-potassic magma around 413Ma. These findings provide constraints on the long-lived Acadian deformation and metamorphism associated with the outboard accretion of the Avalonian micro-continent.
AMERICAN JOURNAL OF SCIENCE
(2021)
Article
Geosciences, Multidisciplinary
Haroldo Vizan
Summary: The Central Patagonian Igneous Metamorphic Belt on the southwestern margin of the North Patagonian Massif, Argentina, is a geologically significant belt that has been subject to debates regarding its origin and geological events. Paleogeographic reconstructions reveal two main tectonic processes, the Chanic and Gondwanan events, which contributed to the formation and collapse of an accretionary orogen in this region.
INTERNATIONAL JOURNAL OF EARTH SCIENCES
(2023)
Article
Geochemistry & Geophysics
Mark R. Hudson, Kenzie J. Turner
Summary: Faults and folds on the southern flank of the Ozark dome in northern Arkansas, USA, record flexural extension followed by shortening during the late Paleozoic Ouachita orogeny. The area experienced north-south extension accompanied by normal and strike-slip faults, and later underwent north-south shortening with strike-slip and reverse faults. The overlap of shortening areas and fluid flux suggests a coeval relationship between inversion and fluid flow.
Article
Geography, Physical
Timothy F. Lawton, Ronald C. Blakey, Daniel F. Stockli, Li Liu
Summary: The passage discusses the evolution of sediment-dispersal networks from the Late Mississippian to the middle Permian in western equatorial Pangea, influenced by climate, eustasy, and the late Paleozoic orogenic system. Different geological events, such as uplifts, basins, and river systems, contributed to the transportation and distribution of sediment across the region, shaping the landscape over time.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2021)
Article
Geochemistry & Geophysics
Armando Lucas S. de Oliveira, Lauro Cezar M. de Lira Santos, Mahyra Tedeschi, Gustavo Viegas, Peter A. Cawood
Summary: The structural framework of the Alto Pajeu Terrane in NE Brazil records the tectonic evolution related to the amalgamation of Western Gondwana. The regional crustal architecture is constrained by geophysical and litho-structural datasets in the Central Borborema Province. Various kinematic indicators consistently assign motion sense for different shear zones, highlighting the transpressional regime in the late stages of the Orogeny in the region. The microstructures reveal deformational conditions and similarities with tectonites along the southern Patos lineament.
Article
Geosciences, Multidisciplinary
Yang -Yang Wang, Yilin Xiao, He Sun, Fengtai Tong, Hai -Ou Gu, Yigan Lu
Summary: This study explores the contributions of continental silicate weathering to the Late Paleozoic Ice Age (LPIA) through analyzing lithium isotope records in Carboniferous seawater. The results suggest that uplift of the Hercynian orogen and radiation of tropical forests played crucial roles in initiating and maintaining the LPIA.
JOURNAL OF ASIAN EARTH SCIENCES
(2021)
Article
Geochemistry & Geophysics
Jianfeng Liu, Jinyi Li, Wenlong Zhang, Jin Zhang, Shuo Zhao, Dongfang Yin, Xiaowei Zhang
Summary: The discovery of a Late Devonian ophiolite fragment in southeastern Inner Mongolia, along with previously reported Carboniferous ophiolites in the same region, confirms the existence of a Late Devonian-Carboniferous ocean basin that evolved into a basin during the Carboniferous period. The presence of a trench-arc-basin system during this time period in the southeastern Central Asian Orogenic Belt suggests the existence of a Late Devonian-Carboniferous orogenic belt. This tectonic configuration is similar to modern arc systems in the Pacific Ocean.
Article
Geosciences, Multidisciplinary
Liandang Zhao, Huayong Chen, Jinsheng Han, Jiangang Jiao
Summary: This study presents new geochronological and geochemical data to constrain the tectonic setting and evolution of the Central Tianshan Block. The results suggest that the Central Tianshan Block was a continental arc in the Ordovician to Carboniferous, formed by the subduction of the Kangguer oceanic slabs. The Devonian period saw the formation of the Central Tianshan continental arc to the south, accompanied by emplacement of multiphase arc-related granitoids in the Shuangqing district.
JOURNAL OF ASIAN EARTH SCIENCES
(2022)
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
Elaheh Sattari, Ali Bahrami, Hossein Vaziri-Moghaddam, Azizollah Taheri, Iliana Boncheva
Summary: The Late Devonian-early Carboniferous deposits in the Anarak section of Central Iran were evaluated using conodont biostratigraphy, sedimentary environment, and sequence stratigraphy. Five lithological units were identified based on field observations. A total of 67 species of 18 conodont genera were identified in the Late Devonian-Carboniferous deposits, leading to the differentiation of 22 conodont biozones. The correlation between sea-level change curves and conodont biofacies suggests a relative correlation between the Central Iran basin and the European and American basins.
ACTA GEOLOGICA SINICA-ENGLISH EDITION
(2023)
Article
Geochemistry & Geophysics
Guo-Chao Sun, Peng Gao, Zi-Fu Zhao
Summary: This study investigates the late Paleozoic granites from the North Qaidam orogen, northeastern Tibet. The results reveal that these granites are formed by partial melting of subducted continental crust at high thermal gradients. The isotopic compositions of these granites are similar to the UHP orthogneiss and continental eclogite in the orogen, indicating their derivation from the subducted continental crust.
Article
Geosciences, Multidisciplinary
Yueqiao Zhang, Shuwen Dong, Haiyan Wang, Mei Feng, H. Thybo, Jianhua Li, Rui Gao, Wei Shi
Summary: We combine seismic reflection profiles and surface-wave tomography to study the lithospheric deformation mode of the Qinling orogeny in central China. We observe a thick lithosphere keel in the convergence zone between the Yangtze Block and the North China Craton, as well as a shallow-crustal decollement that extends into the lower crust of the Qinling Orogen.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Article
Geosciences, Multidisciplinary
Ruibao Li, Xianzhi Pei, Renjie Zhou, Zuochen Li, Lei Pei, Guochao Chen, Youxin Chen, Chengjun Liu
Summary: The Middle Paleozoic granitoids in the East Kunlun Orogen of the northern Tibetan Plateau provide important information about the tectonic evolution of the Proto-Tethys Ocean. Petrological, geochemical, geochronological, and isotopic data suggest that the granites in the East Kunlun Orogen are of I-type, S-type, and A-type, respectively. The formation of these granites is believed to be related to partial melting of lower crust and graywackes under different geological conditions. The collision between North Kunlun and South Kunlun Terrane during the Middle Silurian led to the syn-collisional stage, followed by a post-collisional collapse in the Late Silurian to Early-Middle Devonian.
JOURNAL OF ASIAN EARTH SCIENCES
(2023)