Article
Geosciences, Multidisciplinary
R. A. Glen, R. A. Cooper
Summary: New insights into the Late Precambrian-latest Devonian evolution of the Pacific margin of Gondwana reveal three key tectonic elements, suggesting that convergence along the margin was essentially simultaneous and showing possible trajectories of offshore terranes.
EARTH-SCIENCE REVIEWS
(2021)
Article
Geosciences, Multidisciplinary
Kai Cao, Philippe Herve Leloup, Guocan Wang, Wei Liu, Gweltaz Maheo, Tianyi Shen, Yadong Xu, Philippe Sorrel, Kexin Zhang
Summary: Through detailed geological investigation and analysis along a fold-and-thrust belt in western Yunnan, China, this study reveals the deformation pattern and timing in southeast Tibet during the early stages of the India-Asia collision. The results indicate that the early Cenozoic tectonic evolution is crucial for the growth of the Tibetan Plateau, and the activity of the fold-and-thrust belt ceased around 39 Ma.
GEOLOGICAL SOCIETY OF AMERICA BULLETIN
(2021)
Article
Geochemistry & Geophysics
G. Peron-Pinvidic, L. Fourel, S. J. H. Buiter
Summary: Most rifts and rifted margins around the world developed on former omgens, implying heterogeneous pre-rift lithospheric configuration. Our study reveals that considering pre-rift orogenic inheritance can more accurately explain the geometries of rifted margins.
Article
Geosciences, Multidisciplinary
Shawna E. White, John W. F. Waldron
Summary: This study provides a comprehensive analysis of the deformed margin of the Laurentian craton and its overlying foreland basins. It highlights the lateral variability in basin geometry, sediment provenance, and deformation timing within the Northern Appalachians. The research also sheds light on the different provenance domains in off-margin rocks and diachronous processes involved in the Taconian deformation.
EARTH-SCIENCE REVIEWS
(2022)
Article
Ophthalmology
Aaron Jamison, Bhupendra C. K. Patel, Raman Malhotra
Summary: This study found that the horizontal length of the lower eyelid margin shortens following facial nerve palsy (FNP), as measured from the lower lacrimal punctum to lateral canthal angle.
Article
Geochemistry & Geophysics
S. A. Stewart, A. S. Salem
Summary: Major structures within the Precambrian basement of the western Rub' Al-Khali of Saudi Arabia have been imaged on 2D reflection seismic data for the first time. Large antiformal structures separated by low-angle faults are observed, with individual folds having dimensions in the order of 20 km wavelength and 2 km amplitude. The structural style suggests compression and may be related to the Khida-Abas terrane.
Article
Geosciences, Multidisciplinary
Hojjat Ollah Safari, Leon Bagas
Summary: The Dezful Embayment Zone (DEZ) in the Zagros Mountains hosts predominant oil fields, where Geo-information Techniques (GiT) were used to study surface and subsurface deformation patterns forming traps for oil fields. Results revealed that activity along NW-SE orientated thrust faults led to fault related folding and accumulation of hydrocarbons. The complex transpression-transtensional model proposed for the region contrasts with the simpler structural pattern of the southern part of the DEZ.
MARINE AND PETROLEUM GEOLOGY
(2021)
Article
Geochemistry & Geophysics
Fulong Cai, Lin Ding, Houqi Wang, Andrew K. Laskowski, Liyun Zhang, Bo Zhang, Ali Mohammadi, Jinxiang Li, Peiping Song, Zhenyu Li, Qinghai Zhang
Summary: The study of sandstone petrology, detrital zircon U-Pb-Hf isotopic and trace element analysis, and Cr-spinel electron microprobe geochemical analysis of samples from Paleocene to Miocene peripheral foreland strata in southern Iran suggests that ophiolite obduction occurred before the upper Maastrichtian-lower Paleocene Sachun Formation in an intra-oceanic setting. Furthermore, the presence of detrital zircon with varied eHf(t) values in the upper Oligocene-lower Miocene Razak and Agha Jari formations indicates sedimentary overlap with Eurasia. Analysis of SSZ-affinity Cr-spinel in all samples suggests that ophiolitic rocks have been a continual source of detritus in the foreland basin since the Paleocene.
Article
Geosciences, Multidisciplinary
Farzaneh Shakerardakani, Franz Neubauer, Manfred Bernroider, Fritz Finger, Christoph Hauzenberger, Johann Genser, Michael Waitzinger, Behzad Monfaredi
Summary: This study reports the metamorphic conditions and evolution of the Dorud-Azna metamorphic units in the central part of the Sanandaj-Sirjan zone (SSZ), Iran. The results reveal the polyphase metamorphism in two different basement units and provide new insights into the tectonic history of the SSZ. The findings suggest the influence of rift and plate collision processes, reflecting various stages of a Wilson cycle.
GEOSCIENCE FRONTIERS
(2022)
Article
Geosciences, Multidisciplinary
Mohamed Abd El-Wahed, Mohamed Attia
Summary: There is a debate about the existence of metamorphic core complexes in the Arabian-Nubian Shield, with some evidence supporting their presence while others negating their existence. The gneissic complexes in this region differ from other types of metamorphic core complexes.
JOURNAL OF ASIAN EARTH SCIENCES
(2022)
Article
Geology
Daniel Wiemer, Steffen G. Hagemann, Jon Hronsky, Anthony I. S. Kemp, Nicolas Thebaud, Trevor Ireland, Carlos Villanes
Summary: This study investigated the distribution of major gold deposits in northern Peru. The research found that gold deposits cluster at the intersection between Phanerozoic orogenic belts and unrecognized pre-Andean basement structures, highlighting the significance of these basement structures in controlling the localization of gold deposits.
Article
Geology
Elliot K. Foley, R. A. Henderson, E. M. Roberts, A. I. S. Kemp, C. N. Todd, E. M. Knutsen, C. Fisher, C. C. Wainman, Carl Spandler
Summary: The tectonic setting of the Australian sector of the eastern Gondwanan margin during the Jurassic and Cretaceous is debated, with discussions on convergent tectonism, continental magmatic arcs, and rift-related extension. The detrital zircon record of the Jurassic-Cretaceous Great Australian Superbasin is used as a proxy for igneous activity, indicating short pulses of magmatic activity and juvenile crust or mantle-derived magmatism. Margin reconstruction suggests sustained continental growth due to arc retreat, highlighting the importance of considering cryptic records of juvenile crustal addition in estimating crustal growth rates.
Article
Geosciences, Multidisciplinary
Taylan Sancar
Summary: The collision of the Arabian and Eurasian plates led to the uplift of the Turkish-Iranian Plateau, where ongoing debates focus on the conversion of post-collisional convergence to strain. Analysis of the NW-trending Bitlis-Zagros Mountain Range (BZMR) reveals significant internal deformation patterns, with different fault segments showing varying uplift rates. The study also suggests that apart from the thrust fault marking the collision zone, the western end of the BZMR undergoes a higher convergence zone where shortening is converted to vertical plane strain.
JOURNAL OF ASIAN EARTH SCIENCES
(2021)
Article
Geochemistry & Geophysics
Reza Mir, Peter Fullagar, Mehrdad Darijani, Richard Smith, Shawn Scott, Martin Ross, Pejman Shamsipour, Michel Chouteau, Kevin Ansdell, Mohamed Gouiza
Summary: Geophysical methods are crucial for detecting and assessing deeply buried high-grade uranium deposits in the Athabasca Basin. However, the resistivity and thickness variations of the Quaternary surface cover can affect the interpretation of conductivity models. The study shows that the parameters of the cover can be recovered separately when it is more conductive than the underlying sandstone. Additionally, using airborne electromagnetic data allows for the detection of basement conductors even in the presence of significant cover thickness variations.
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
Geosciences, Multidisciplinary
M. Ford, J. Verges
Summary: The study reinterprets the narrow eastern North Pyrenean Zone in France as an inverted salt-rich transtensional rift system, with evidence of extension, salt tectonics, and basin formation. The research suggests a transtensional regime along the Iberia-Europe plate margin during the late Early and early Late Cretaceous, characterized by deep faults, discontinuous crustal domains, and 'hot' pull-apart basins.
JOURNAL OF THE GEOLOGICAL SOCIETY
(2021)
Article
Geosciences, Multidisciplinary
David Cruset, Jaume Verges, Antonio Benedicto, Enrique Gomez-Rivas, Irene Cantarero, Cedric M. John, Anna Trave
Summary: The study reconstructs the fluid flow evolution of a portion of the inverted Pyrenean rift, emphasizing on the movement of different types of fluids in fractures at different evolution stages, which could have significant implications on the occurrence of mineralization.
Article
Geosciences, Multidisciplinary
Lucia Struth, Daniel Garcia-Castellanos, Laura Rodriguez-Rodriguez, Marc Viaplana-Muzas, Jaume Verges, Alberto Jimenez-Diaz
Summary: This study investigates the factors influencing the erosion and landscape evolution of internally-drained basins when they are captured by external drainage, finding that basin elevation, topographic barrier width, erodibility, and lithosphere rigidity all play a significant role in the process. The research demonstrates that transient landscape evolution can persist for tens of millions of years even without tectonic activity or changes in base level or climate.
BSGF-EARTH SCIENCES BULLETIN
(2021)
Article
Chemistry, Analytical
Maik Neukirch, Antonio Garcia-Jerez, Antonio Villasenor, Francisco Luzon, Jacques Brives, Laurent Stehly
Summary: HVSR and DC joint inversion is crucial in estimating shallow S-wave velocity structure for geophysical data interpretation and geo-engineering purposes.
Article
Geochemistry & Geophysics
Ajay Kumar, Manel Fernandez, Jaume Verges, Montserrat Torne, Ivone Jimenez-Munt
Summary: The geodynamic evolution of the Western Mediterranean for the past 35 My is still a subject of debate, but the present-day structure and composition of the lithosphere and sublithospheric mantle provide insights into the region's geodynamic evolution. Using integrated geophysical and petrological modeling, researchers have identified differences in the structure and composition between various geological units, indicating significant variations in lithosphere thickness within the region. The results support the presence of opposite dipping subduction and retreat processes in adjacent geological units, suggesting a complex geodynamic history in the area.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2021)
Article
Geochemistry & Geophysics
Wentao Zhang, Ivone Jimenez-Munt, Montserrat Torne, Jaume Verges, Estefania Bravo-Gutierrez, Ana M. Negredo, Eugenio Carminati, Daniel Garcia-Castellanos, Manel Fernandez
Summary: This study presents a geophysical-geochemical integrated model of the thermochemical structure of the lithosphere and uppermost mantle along a transect from the Northern Tyrrhenian Sea to the Pannonian Basin, crossing the northern Apennines, the Adriatic Sea, and the Dinarides fold-thrust belt. The objectives are to image crustal thickness variations and characterize the different mantle domains. The results show a more complex structure and slightly higher average crustal density of Adria compared to Tisza microplate. Two opposed subducting slabs beneath the Apennines and Dinarides have largely controlled the geodynamic evolution of the study region in the last 30 My.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2022)
Article
Multidisciplinary Sciences
Daniel Munoz-Lopez, David Cruset, Jaume Verges, Irene Cantarero, Antonio Benedicto, Vinyet Baques, Xavier Mangenot, Richard Albert, Axel Gerdes, Aratz Beranoaguirre, Anna Trave
Summary: This study applies U-Pb dating and geochemical analysis to fracture-filling calcite veins and host carbonates from the Boixols-Sant Corneli anticline in the Southern Pyrenees. The analysis provides insights into the absolute timing of fracturing and mineralization, the age and duration of fold evolution, and the variations and implications of fluid behavior across the anticline.
Article
Geochemistry & Geophysics
Giulio Casini, Jaume Verges, Peter Drzewiecki, Mary Ford, David Cruset, Wayne Wright, David Hunt
Summary: The reinterpretation of the Organya Basin highlights the importance of Upper Triassic evaporites in the tectono-sedimentary evolution of the South-Central Pyrenees. The study integrates new field observations and subsurface data to create a restored cross-section that shows the template of the northern Iberian salt-rich rifted margin. The diapiric activity along this margin is divided into three stages: early salt mobilization in the Jurassic, main diapiric evolution from the late Jurassic to the middle Albian, and diapiric reactivation during basin inversion from the Campanian to the Miocene.
Article
Geochemistry & Geophysics
Jordi Diaz, Sergi Ventosa, Martin Schimmel, Mario Ruiz, Albert Macau, Anna Gabas, David Marti, Ozgenc Akin, Jaume Verges
Summary: In this study, ambient seismic noise acquired in the Cerdanya Basin was used to evaluate the capability of different methodologies to map the geometry of a small-scale sedimentary basin. The results from various techniques, including autocorrelations, ambient noise Rayleigh wave tomography, HVSR, and band-pass-filtered ambient noise amplitude mapping, consistently showed that the deeper part of the basin is located in its central part, reaching depths of 600-700 m close to the Tet fault trace. The overall consistency between the results provides solid constraints to the basement depth estimation and helps improve the geological characterization of the Cerdanya Basin.
Article
Geosciences, Multidisciplinary
Mary Ford, Emmanuel Masini, Jaume Verges, Raphael Pik, Sebastien Ternois, Julien Leger, Armin Dielforder, Gianluca Frasca, Arjan Grool, Constance Vinciguerra, Thomas Bernard, Paul Angrand, Antoine Cremades, Gianreto Manatschal, Sebastien Chevrot, Laurent Jolivet, Frederic Mouthereau, Isabelle Thinon, Sylvain Calassou
Summary: This paper provides an overview of the formation and evolution of the Pyrenees, focusing on the early convergence stage. It highlights the contributions of the OROGEN project and the integration of its results with other collaborative projects. The paper also discusses the role of salt tectonics in the region.
BSGF-EARTH SCIENCES BULLETIN
(2022)