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Geologica acta 578 records found  previous11 - 20nextend  jump to record: Search took 0.01 seconds. 
11.
14 p, 5.8 MB Study of the rupture processes of the 1989 (Mw 6.9) and 2021 (Mw 7.0) Guerrero earthquakes using teleseismic records : Sismotectonic implications / Martínez-López, María del Rosario (Universidad Nacional Autónoma de México. Instituto de Geofísica)
Slip models of the April 25, 1989 (Mw 6. 9) earthquake and the Acapulco earthquake of September 8, 2021 (Mw 7. 0) were determined to analyze its rupture zone and understand the relationship of interplate earthquakes in the Acapulco-San Marcos subduction zone. [...]
2023 - 10.1344/GeologicaActa2023.21.9
Geologica acta, Vol. 21 (2023) , p. 1-14 (Articles)  
Detailed record - Creative Commons
12.
25 p, 15.8 MB Insights on geochemical characteristics, microthermometry of hydrothermal fluids, and sulfur isotope systematics of the Daralu porphyry Cu deposit, SE Iran / Kahnou, Zahra Jalali (Shiraz University. Faculty of Sciences. Department of Earth Sciences) ; Tangestani, Majid H. (Shiraz University. Faculty of Sciences. Department of Earth Sciences) ; Asadi, Sina (Shiraz University. Faculty of Sciences. Department of Earth Sciences)
The Miocene Daralu Porphyry Copper Deposits (PCDs) is found associated with other porphyries such as Sarcheshmeh and Meiduk in the Kerman Cenozoic Magmatic Arc (KCMA), southern Iran. In this research, we provided whole-rock geochemical data, characteristics of hydrothermal fluid and sulfur isotope composition of the Daralu intrusive body, and discussed the nature, tectonic setting and fluid evolution of this deposit aiming to investigate its fertility. [...]
2023 - 10.1344/GeologicaActa2023.21.10
Geologica acta, Vol. 21 (2023) , p. 1-23, I-II (Articles)  
Detailed record - Creative Commons
13.
14 p, 1.9 MB The elusive crustal resistive boundary beneath the Deccan Volcanic Province and the western Dharwar craton, India / Pratap, Akkapolu (Absolute Imaging International India Limited (Índia)) ; Bukke, Pradeep Naick (Electromagnetic Geophysics. CSIR-National Geophysical Research Institute) ; Kusham, (Electromagnetic Geophysics. CSIR-National Geophysical Research Institute) ; Paluri, Rama Rao (Andhra University) ; Kasturi, Naganjaneyulu (Electromagnetic Geophysics. CSIR-National Geophysical Research Institute)
The electrical properties of the boundary beneath the Deccan Volcanic Province and the western Dharwar craton are imaged by using the magnetotelluric method. The magnetotelluric study was carried out along a 150km long WNW-ESE profile from Belgaum (in the Deccan Volcanic Province) to Haveri (in the western Dharwar craton). [...]
2023 - 10.1344/GeologicaActa2023.21.2
Geologica acta, Vol. 21 (2023) , p. 1-14 (Articles)  
Detailed record - Creative Commons
14.
11 p, 7.1 MB Understanding the spatio-temporal evolution of fractures in pillow basalt / Mondal, Sourav (Indian Institute of Technology. Department of Chemical Engineering) ; Mondal, Tridib Kumar (Indian Statistical Institute. Geological Studies Unit) ; Biswas, Sirshendu Kumar (Indian Statistical Institute. Geological Studies Unit) ; Das, Gourav (Indian Statistical Institute. Geological Studies Unit)
We investigated the origin and spatio-temporal evolution of cooling fractures in pillow basalt which undergo thermal contraction after their eruption in an aqueous environment. Through a computer-based simulation using Fourier transformation, the thermo elastic stress displacement profiles within individual pillow units are determined. [...]
2023 - 10.1344/GeologicaActa2023.21.8
Geologica acta, Vol. 21 (2023) , p. 1-10, I (Articles)  
Detailed record - Creative Commons
15.
28 p, 27.7 MB Origin and evolution of Neoproterozoic metaophiolitic mantle rocks from the eastern Desert of Egypt : Implications for tectonic and metamorphic events in the Arabian-Nubian Shield / Ali, Shehata (Minia University. Faculty of Science. Geology Department) ; Azer, Mokhles K. (National Research Centre. Geological Sciences Department) ; Abdel-Karim, Abdel-Aal M. (Zagazig University. Faculty of Science. Geology Department)
The mantle rocks from Kadaboura and Madara areas represent sections of dismembered ophiolitic complexes developed during the Neoproterozoic in the Eastern Desert of Egypt, which is located in the northwestern corner of the Arabian-Nubian Shield. [...]
2023 - 10.1344/GeologicaActa2023.21.6
Geologica acta, Vol. 21 (2023) , p. 1-21, I-VII (Articles)  
Detailed record - Creative Commons
16.
14 p, 12.7 MB Tectonic geomorphology of Bozdoğan and Karacasu grabens, western Anatolia / Özsayin, Erman (Hacettepe University. Department of Geological Engineering) ; Dirik, Kadir (Hacettepe University. Department of Geological Engineering) ; Ocakoğlu, Faruk (Eskişehir Osmangazi University. Department of Geological Engineering) ; Açikalin Cartigny, Sanem (New Castle University. School of Natural and Environmental Sciences) ; Sağlam Selçuk, Azad (Van Yüzüncü Yıl University. Department of Geological Engineering)
Western Anatolia is one of the most rapidly extending and seismically active regions in the world. The circa N-S extension since the Early Miocene caused the formation of E-W trending major grabens and intervening horsts, having earthquake potentials with magnitude ≥5. [...]
2023 - 10.1344/GeologicaActa2023.21.1
Geologica acta, Vol. 21 (2023) , p. 1-14 (Articles)  
Detailed record - Creative Commons
17.
10 p, 3.7 MB New evidence for late Eocene-early Oligocene uplift of Aves Ridge and paleogeography of GAARlandia / Iturralde-Vinent, Manuel A. (Academia de Ciencias de Cuba) ; MacPhee, Ross D.E. (American Museum of Natural History)
The GAARlandia hypothesis has produced vigorous debate among biologists regarding whether now-submerged landforms that existed in the Caribbean region during the late Paleogene might have acted as a barrier for marine organisms and as a bridge for terrestrial biotas migrating from South America into the Greater Antilles. [...]
2023 - 10.1344/GeologicaActa2023.21.5
Geologica acta, Vol. 21 (2023) , p. 1-10 (Articles)  
Detailed record - Creative Commons
18.
22 p, 21.8 MB Tectonic and lithologic controls on the landscape adjustment along the eastern terrain of the Mae Tha fault, northern Thailand / Manopkawee, Pichawut (Chiang Mai University. Department of Geological Sciences) ; Mankhemthong, Niti (Chiang Mai University. Department of Geological Sciences) ; Pattarakamolsen, Chanin (Chiang Mai University. Department of Geological Sciences)
Understanding the interaction between tectonics, climatically-driven surficial processes, and bedrock erodibility provides insight into how the landscape develops over space and time. Although numerous active faults, lithologic and climatic variability control the landscape across Northern Thailand, the influence of these factors on the spatial adjustment of a dynamic landscape is largely unknown. [...]
2023 - 10.1344/GeologicaActa2023.21.4
Geologica acta, Vol. 21 (2023) , p. 1-22 (Articles)  
Detailed record - Creative Commons
19.
16 p, 19.0 MB Devonian-Mississippian faulting controlled by WNW-ESE-striking structural grain in Proterozoic basement rocks in Billefjorden, central Spitsbergen / Koehl, Jean-Baptiste P. (University of Oslo) ; Christophersen, Gard (Halliburton (Noruega)) ; Collombin, Maxime (Altis Groupe (Suïssa)) ; Taule, Christoffer (Multiconsult Norge) ; Stokmo, Eirik M.B. (Franzefoss Mineral ((Noruega)) ; Allaart, Lis (Århus University. Department of Biology-Microbiology)
In Billefjorden, central Spitsbergen, Devonian collapse and Carboniferous rift-related sedimentary strata were deposited unconformably over Proterozoic basement rocks displaying well developed N-S-trending Caledonian grain. [...]
2023 - 10.1344/GeologicaActa2023.21.7
Geologica acta, Vol. 21 (2023) , p. 1-16 (Articles)  
Detailed record - Creative Commons
20.
31 p, 19.6 MB The Early Cretaceous coastal lake Konservat-Lagerstätte of La Pedrera de Meià (Southern Pyrenees) / Gil-Delgado, Alejandro (Universitat Autònoma de Barcelona. Departament de Geologia) ; Martínez-Delclòs, Xavier (Universitat de Barcelona. Departament de Dinàmica de la Terra i de l'Oceà) ; Sellés, Albert G. (Institut Català de Paleontologia Miquel Crusafont) ; Galobart, Àngel (Institut Català de Paleontologia Miquel Crusafont) ; Oms, O. (Oriol) (Universitat Autònoma de Barcelona. Departament de Geologia)
A state of the art of the Barremian Konservat-Lagerstätte of la Pedrera de Meià site (Southern Pyrenees) is compiled here including the acquisition of new geological data. The relevance of this site, together with the nearby la Cabroa site, is due to its paleobiotic richness and the fact that 113 holotypes and paratypes of flora and fauna have already been defined. [...]
2023 - 10.1344/GeologicaActa2023.21.3
Geologica acta, Vol. 21 (2023) , p. 1-31 (Articles)  
Detailed record - Creative Commons

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