Article
Geosciences, Multidisciplinary
Bruno Daniel Leite Mendes, Daniel Pastor-Galan, Mark J. Dekkers, Wout Krijgsman
Summary: This study investigates the uncertainties regarding the formation mechanisms of the Cantabrian Orocline and Central Iberian curve during the Paleozoic era. Through paleomagnetic research on late Carboniferous-early Permian vertical-axis rotations in SW Iberia, it was found that the Greater Cantabrian Orocline hypothesis is supported, indicating a significant change in stress field during the late Carboniferous.
GEOSCIENCE FRONTIERS
(2021)
Article
Geochemistry & Geophysics
A. L. Stevens Goddard, J. C. Fosdick, M. Calderon, M. C. Ghiglione, R. A. VanderLeest, B. W. Romans
Summary: Thermochronologic data from zircon fission track and (U-Th)/He analysis in the southern Patagonian Andes reveal new patterns of Paleogene rock cooling and help reconstruct deformational and erosional events. The Path Family Approach is utilized to filter plausible thermal solutions based on structural and tectonic context. The results suggest a period of out-of-sequence deformation in the western domain and contemporaneous exhumation beyond the basin margins in the central domain, providing new insights into the tectonic evolution of the orogen.
Article
Geosciences, Multidisciplinary
Hodei Uzkeda, Josep Poblet, Marta Magan, Mayte Bulnes, Santiago Martin, David Fernandez-Martinez
Summary: This study presents the procedure employed to obtain data, construct models and interpret them geologically for virtual outcrop models from the Cantabrian Zone and Asturian Basin in the Iberian Peninsula. The digital techniques and data used include fieldwork, Google Earth images, orthophotographs, stereoscopical pairs of photographs, and virtual outcrop models constructed using Structure from Motion photogrammetry. The analysis of these models has provided valuable geological information that would have been difficult to obtain using traditional techniques.
JOURNAL OF STRUCTURAL GEOLOGY
(2022)
Article
Geosciences, Multidisciplinary
C. Puigdomenech, S. Alarcon, V. Ruiz Gonzalez, P. Rossel, D. Orts, C. Zaffarana
Summary: The Maipo Transition Zone or Maipo Orocline represents a change in topographical strike direction in central Chile, indicating a transition from a north-south trend to an east-northeast to west-southwest trend. The unclear boundary between the Maipo Orocline and the Arauco Orocline is reflected in paleomagnetic studies showing clockwise and counterclockwise rotations. The similar tectonic rotation patterns recorded in Mesozoic and Miocene rocks suggest a single block behavior for the whole region and constrain the maximum possible age of tectonic rotations to the Miocene.
JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
(2021)
Article
Geochemistry & Geophysics
Manuel Francisco Pereira, Jose Manuel Fuenlabrada, Carmen Rodriguez, Antonio Castro
Summary: Carboniferous magmatism in southwestern Iberia played a crucial role in understanding the formation of the Pangea supercontinent and recorded the complex oblique convergence between Laurussia and Gondwana. A new tectonic model suggests that the Iberia Variscan belt was the site of simultaneous collisional and accretionary orogenic processes.
Article
Geosciences, Multidisciplinary
Seyed Tohid Nabavi, Jonas B. Ruh
Summary: This study examines the transition from forward-breaking to break-back thrust sequences and discusses the criteria for identifying hybrid thrust sequences. It also provides insights into the deformation conditions under which hybrid thrust sequences develop.
JOURNAL OF ASIAN EARTH SCIENCES
(2023)
Article
Geosciences, Multidisciplinary
C. Klootwijk
Summary: This study focuses on the paleomagnetic characteristics of the Myall blocks in the southern New England Orogen, revealing different phases of magnetization and prevalent overprinting. The comparison of primary and overprint poles across different blocks suggests counterclockwise rotations in the western Myall Block forearc basin and diverse rotation patterns in other areas. Overall, the findings contribute to understanding the geological evolution of the Tamworth Belt and the Manning Orocline.
AUSTRALIAN JOURNAL OF EARTH SCIENCES
(2022)
Article
Geosciences, Multidisciplinary
Josep Maria Casas, Joan Guimera, Joaquina Alvarez-Marron, Icaro Dias da Silva
Summary: Various models have been proposed for the formation of the Ibero-Armorican Arc. Based on analysis, it is suggested that the arc formed primarily from a non-rotational margin-controlled curvature, with slight contraction during late Carboniferous and/or Alpine times.
JOURNAL OF THE GEOLOGICAL SOCIETY
(2022)
Article
Geosciences, Multidisciplinary
Manuel Ignacio de Paz-Alvarez, Sergio Llana-Funez, Juan Luis Alonso
Summary: The Esla Nappe in the Cantabrian Zone of NW Iberia has experienced significant displacement and deformation processes, including cataclastic flow and pressure solution. In the late stages of emplacement, the ENSZ underwent intrusion fracturing and injection of elastic sills and dykes, forming a network of quartz sand-rich lithosomes. The breach through the shear zone was favored by a change in stress regime and may have been influenced by fluid overpressure conditions.
JOURNAL OF STRUCTURAL GEOLOGY
(2021)
Article
Geosciences, Multidisciplinary
Michel Faure, Jacky Ferriere
Summary: The existence of the Variscan belt in the Alpine basement has been acknowledged, but its correlation to the litho-tectonic domains outside of the Alpine chain is still disputed. By studying various geological units, a preliminary reconstruction of the Variscan orogen in the Alpine basement can be made.
Article
Geochemistry & Geophysics
Zhang Shuai, Tian YunTao, Tian Ye, Liu YiMin, Tang Yuan, Qin YongHui, Yan ZhaoKun, Li ShiHu, Shen ZhongShan, Zhang ZengJie
Summary: The study applied magnetic fabric analysis to the lower Paleogene stratigraphic section in the Lushan area of the southwestern Sichuan Basin, revealing a paleo-stress field dominated by NW-SE shortening during the early Cenozoic deformation, perpendicular to the magnetic lineation. The late Cenozoic and present stress field of this area is similar to that of the early Cenozoic, suggesting the formation of the Longmenshan plateau margin in the early Cenozoic.
CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
(2021)
Article
Geochemistry & Geophysics
Xi Wang, Yin Liu, Jian Cao, Yiduo Liu, Bing Luo, Kongyou Wu, Zheng Shi, Hongbin Kang
Summary: The study analyzed deep-seated faults and folds in the northwestern Sichuan Basin using seismic data, highlighting their significance in controlling fluid migration and hydrocarbon accumulation. The formation of these structures went through multiple stages, including during the Middle-to-Late Triassic and Cenozoic. The deep-seated faults and folds show potential for large-scale hydrocarbon accumulation, with thrust faults acting as migration pathways for fluids instead of sealing barriers.
Article
Geosciences, Multidisciplinary
John P. Craddock, Perach Nuriel, Andrew R. C. Kylander-Clark, Bradley R. Hacker, John Luczaj, Ram Weinberger
Summary: Recent studies of the Dead Sea transform indicate that the relative motion between Africa and Arabia shifted to the transform as early as 20 Ma, causing rift formation and fault activity. The Gishron fault, a western bounding fault, has been studied for its fault-related calcite veins, which suggest a continuous supply of meteoric fluid feeding the fault over the past 7 million years.
GEOLOGICAL SOCIETY OF AMERICA BULLETIN
(2022)
Article
Geochemistry & Geophysics
Jordi Miro, Oriol Ferrer, Josep Anton Munoz, Gianreto Manastchal
Summary: The reactivation of former rift systems and passive margins during tectonic inversion leads to structural differences between internal and external domains, as well as along-strike variations. The Basque-Cantabrian and Asturian systems demonstrate a transition from salt to basement-inherited structures, with a transitional zone separating thick- and thin-skinned domains. This study aims to investigate the connection between these domains and describe deformation in the transitional zone using analogue models.
Article
Multidisciplinary Sciences
Adnan Khalid, Sajjad Ahmad, Asghar Ali, Gohar Rehman, Muhammad Yaseen
Summary: The research focuses on the tectonic evolution and structural impact of the Late Cretaceous/Paleocene, Indian-Eurasian collision on the Central Kirthar Fold Belt. The Kirthar Fold Belt is unique due to its deformation by compressional tectonics, resulting in wide anticlines, narrow synclines, and overturned folds. Thin-skinned and thick-skinned deformation is observed, with evidence of basal decollement and fault penetration to basement rocks. The structural throw of the Kirthar Thrust Fault decreases towards the Kirthar Foredeep Zone, indicating an overall 17.3% shortening due to compressional stresses.
Article
Geochemistry & Geophysics
H. H. Stowell, J. J. Schwartz, S. B. Ingram, J. Madden, C. Jernigan, M. Steltenpohl, P. Mueller
Article
Geosciences, Multidisciplinary
Carmen Rodriguez, Manuel Francisco Pereira, Antonio Castro, Gabriel Gutierrez-Alonso, Carlos Fernandez
Summary: This study investigates the bulk rock geochemistry and zircon geochronology of igneous and metaigneous rocks in the Evora gneiss dome, revealing a succession of magmatic and melting events lasting approximately 30 million years between 341-314 Ma. The detailed field relationships of orthomigmatites and host granitic rocks prove crucial in reconstructing the complex sequence of tectono-thermal events. The results suggest the recycling of intermediate-mafic plutonic rocks and support a geodynamic model involving ridge subduction.
GEOLOGICAL SOCIETY OF AMERICA BULLETIN
(2022)
Article
Geochemistry & Geophysics
Byron Solis-Alulima, Jacobo Abati, Alicia Lopez-Carmona, Gabriel Gutierrez-Alonso, Javier Fernandez-Suarez, Daniel F. Stockli
Summary: This study presents U-Pb geochronological data on detrital zircon grains from the metasedimentary successions in the Sierra Albarrana Domain. The results suggest that this domain is likely part of the autochthonous section of the Central Iberian Zone and the sedimentary provenance may be from the Saharan Metacraton with possible minor input from the Tuareg Shield. The study also compares the U-Pb zircon data with existing data from Neoproterozoic and Cambrian rocks in the Iberian Massif using multidimensional scaling techniques.
Article
Geosciences, Multidisciplinary
Carmen Rodriguez, Antonio Castro, Daniel Gomez-Frutos, Gabriel Gutierrez-Alonso, M. Francisco Pereira, Carlos Fernandez
Summary: The Cambro-Ordovician silicic magmatism in the Central Iberian Zone is a voluminous and geochemically unique event, the origin of which is not fully understood. Data analysis suggests that it may be attributed to extensive melting of Ediacaran metasiliciclastic rocks and a Ca-rich component. Fast crustal melting triggered by mafic magma-derived fluids is considered the main cause of the unique features of this magmatic event.
Article
Geosciences, Multidisciplinary
Javier Fernandez-Lozano, Gabriel Gutierrez-Alonso, Rosa M. Carrasco, Javier Pedraza
Summary: This article presents the application of early LiDAR datasets in Spain and discusses the use of UAV-derived photogrammetry. The study found that even with lower resolution, LiDAR datasets can provide outstanding results. Additionally, the use of visual enhancement tools greatly improves the interpretation of findings in mining and archaeological studies.
Article
Geochemistry & Geophysics
Daniel Gomez-Frutos, Antonio Castro, Gabriel Gutierrez-Alonso
Summary: Post-collisional voluminous silicic magmatism, represented by large granodiorite batholiths and minor intrusions, contributes to long-term continental growth and can be derived from a metasomatized mantle source. The timing of post-collisional magmatism is significant for continental crustal growth, as it reaches maximum values during the amalgamation-collisional stage of the supercontinent cycle. However, the importance of post-Archean, post-collisional magmatism has been underestimated in calculating continental crustal growth through time.
EARTH AND PLANETARY SCIENCE LETTERS
(2023)
Article
Geosciences, Multidisciplinary
Byron Solis-Alulima, Jacobo Abati, Alicia Lopez-Carmona, Gabriel Gutierrez-Alonso, Javier Fernandez-Suarez, Daniel F. F. Stockli
Summary: This study analyzes Lu-Hf data on detrital zircon grains from the Lower Paleozoic metasedimentary successions in the Sierra Albarrana Domain of the SW Iberian Massif, providing new information about their origin, record of continental crustal evolution, and geological affinity. Previous U-Pb data on detrital zircon grains in this region show two main age populations at approximately 595 Ma and 1.90 Ga. The Ediacaran events suggest the presence of a magmatic arc with input of juvenile magmas intruding into the Eburnean basement of Gondwana, and a possible mixing with it. The Paleoproterozoic zircon population corresponds to the Eburnean Orogeny. The study also suggests a possible affinity with the Central Iberian Zone during Ediacaran-Cambrian times but different settings during the Paleoproterozoic.
JOURNAL OF THE GEOLOGICAL SOCIETY
(2023)
Article
Geochemistry & Geophysics
Antonio Castro, Carmen Rodriguez, Gabriel Gutierrez-Alonso, Jesus Damian de la Rosa
Summary: The Los Pedroches batholith in SW Spain is an important example of post-collisional batholiths in the Iberian massif. It consists mainly of biotite granodiorite, which was emplaced in the shallow crust after the main deformation phases of the Variscan orogeny. In the Quintana de la Serena area, granodiorites were partially emplaced into dacites characterized by abundant orthopyroxene. New zircon geochronology data suggests that the orthopyroxene-bearing subvolcanic rocks were emplaced and cooled slightly earlier than the massive granodiorites and their related mafic microgranular enclaves.
Article
Geochemistry & Geophysics
Emilio Gonzalez Clavijo, Icaro Dias da Silva, Jose R. Martinez Catalan, Juan Gomez Barreiro, Gabriel Gutierrez-Alonso, Alejandro Diez Montes, Mandy Hofmann, Andreas Gaertner, Ulf Linnemann
Summary: This passage describes the allochthonous complexes of the Galicia-Tras-osMontes Zone, explaining the formation process, structure, and characteristics of the tectonic stack, as well as its relationship with the autochthonous zone. The text also mentions the results of geochronological studies supporting the sedimentation age range of LPa and its associations with other rock formations.
Article
Geology
V. V. Vrublevskii, I. F. Gertner, G. Gutierrez-Alonso, M. Hofmann, O. M. Grinev, A. A. Mustafaev
Summary: This study presents new geochronological and compositional data for alkaline-mafic igneous rocks from the Goryachegorsk area in Siberia, Russia, suggesting a complex magmatic history with mixing of various sources. The geochemical similarities between different age alkaline magmatism in the region provide insights into mantle plume-lithosphere interactions over a span of approximately 250 million years.
INTERNATIONAL GEOLOGY REVIEW
(2021)
Article
Geochemistry & Geophysics
Daniel Pastor-Galan, Gabriel Gutierrez-Alonso, Arlo B. Weil
Proceedings Paper
Geology
G. Gutierrez-Alonso, J. C. Gutierrez-Marco, J. Fernandez-Suarez, E. Bernardez, F. Corfu, A. Lopez-Carmona
PETROLOGY OF MAGMATIC AND METAMORPHIC COMPLEXES
(2019)
Proceedings Paper
Geology
A. Lopez-Carmona, B. E. Solis-Alulima, G. Gutierrez-Alonso, A. M. Alvarez-Valero, P. A. Tishin, I. F. Gertner
PETROLOGY OF MAGMATIC AND METAMORPHIC COMPLEXES
(2019)
Article
Geology
Byron Ernesto Solis-Alulima, Alicia Lopez-Carmona, Gabriel Gutierrez-Alonso, Antonio M. Alvarez-Valero
BOLETIN GEOLOGICO Y MINERO
(2019)
Article
Archaeology
J. Fernandez-Lozano, J. J. Palao-Vicente, J. A. Blanco-Sanchez, G. Gutierrez-Alonso, J. Remondo, J. Bonachea, M. Morellon, A. Gonzalez-Diez
JOURNAL OF ARCHAEOLOGICAL SCIENCE-REPORTS
(2019)