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Jian Zheng, Yehua Shan and Simin Hu
It is generally accepted that during the Mesozoic NE-NNE-trending folds overprinted E-W-trending folds to form the Longshan dome in the central South China continent, although the interference map does not tell the relative ages of the fold sets. In an e...
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Marc Jolivet, Philippe Boulvais, Laurie Barrier, Cécile Robin, Gloria Heilbronn, Julie Ledoyen, Quentin Ventroux, Yingying Jia, Zhaojie Guo and Elena A. Bataleva
The Late Mesozoic–Cenozoic topographic and climate evolution of Central Asia remains highly debated. The final retreat of the proto-Paratethys Sea from the western Tarim Basin is thought to correspond in time with the onset of tectonic uplift in th...
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Jingmai K. O?Connor, Luis M. Chiappe, Cheng-ming Chuong, David J. Bottjer and Hailu You
At least two lineages of Mesozoic birds are known to have possessed a distinct feather morphotype for which there is no neornithine (modern) equivalent. The early stepwise evolution of apparently modern feathers occurred within Maniraptora, basal to the ...
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Dmitry A. Ruban
Framing geoheritage thematically is important to reveal its diversity. Field investigations in the western part of the Greater Caucasus orogen have allowed for the characterization of three localities representing palaeoislands of the Caucasian Sea, whic...
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Encarnación Puga, Antonio Díaz de Federico, Mark Fanning, José Miguel Nieto, José Ángel Rodríguez Martínez-Conde, Miguel Ángel Díaz Puga, José Antonio Lozano, Gianluca Bianchini, Claudio Natali and Luigi Beccaluva
The Betic Ophiolites consist of numerous tectonic slices, metric to kilometric in size, of eclogitized mafic and ultramafic rocks associated to oceanic metasediments, deriving from the Betic oceanic domain. The outcrop of these ophiolites is aligned alon...
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O. Adrian Pfiffner and Laura Gonzalez
Based on the structural style and physiographic criteria, the Central Andes of Peru can be divided into segments running parallel to the Pacific coast. The westernmost segment, the Coastal Belt, consists of a Late Jurassic?Cretaceous volcanic arc sequenc...
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Xiaojing Zhang, Jenny Omma, Victoria Pease and Robert Scott
The sedimentary and provenance characteristics of seven Permo-Carboniferous and two early Cretaceous samples from the Taimyr Peninsula provide information about the latest evolution of Uralian orogeny and the opening of the Amerasian Basin. The Permo-Car...
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Christian Vérard and Gérard M. Stampfli
The present work, derived from a full global geodynamic reconstruction model over 600 Ma and based on a large database, focuses herein on the interaction between the Pacific, Australian and Antarctic plates since 200 Ma, and proposes integrated solutions...
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Myrl E. Beck, Jr,Russell F. Burmester,Brian C. Steele
Pág. 153 - 163
Paleomagnetic data were obtained for 12 sites in gently dipping, fresh to slightly altered volcanic and volcaniclastic rocks near Lago Verde, Aisén Province, Southern Chile. Similar directions found in high and low stability magnetite and pyrrhotite, plu...
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Myrl E. Beck, Jr,Russell F. Burmester,Brian C. Steele
Pág. 153 - 163
Paleomagnetic data were obtained for 12 sites in gently dipping, fresh to slightly altered volcanic and volcaniclastic rocks near Lago Verde, Aisén Province, Southern Chile. Similar directions found in high and low stability magnetite and pyrrhotite, plu...
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Luis Aguirre,Joaquin A. Cortes,Diego Morata,Francisco Herve
Pág. 187 - 201
ABSTRACT. Rocks belonging to various units from the Jurassic to the Neogene were studied in the Chilean Patagonian area between 43 and 46°S. AII these rocks were affected by very low to low grade metamorphism in the zeolite, prehnitepumpellyite and green...
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Luis Aguirre,Joaquin A. Cortes,Diego Morata,Francisco Herve
Pág. 187 - 201
ABSTRACT. Rocks belonging to various units from the Jurassic to the Neogene were studied in the Chilean Patagonian area between 43 and 46°S. AII these rocks were affected by very low to low grade metamorphism in the zeolite, prehnitepumpellyite and green...
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Bartosz Owoc, Artur Marciniak, Jan Dzierzek, Sebastian Kowalczyk and Mariusz Majdanski
The clear and detailed images of geological structures that can be obtained by seismic methods are one of the main drivers of their popularity in geological research. The quality of final geophysical images and models relies strongly on the amount of dat...
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Joshua P. Taylor, Laura E. Webb, Cari L. Johnson and Matthew J. Heumann
The Central Asian Orogenic Belt, or Altaids, is an amalgamation of volcanic arcs and microcontinent blocks that records a complex late Precambrian?Mesozoic accretionary history. Although microcontinents cored by Precambrian basement are proposed to play ...
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Diana Fernández,Luciana Giachetti,Sabine Stöhr,Ben Thuy,Damián Pérez,Marcos Comerio,Pablo Pazos
Pág. 421 - 432
The first articulated remains of ophiuroids for the Mesozoic of South America are described from the Lower Cretaceous of Neuquén Basin, Argentina. The taxonomic analysis allows the assignment of the material described herein to the extinct genus Ophiopet...
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Victor Maksaev,Francisco Munizaga,Colombo Tassinari
Pág. 447 - 506
U-Pb zircon geochronological data provide record of about 130 Ma of igneous activity in the Andes of northern Chile, which extended episodically from the latest Early Carboniferous to Early Jurassic (328-194 Ma). The overall U-Pb data show that volcanism...
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Silvina De Valais,Victor Filippi,Sonia Molinas,Ricardo Souberlich
Pág. 541 - 547
The Mesozoic fossil record from Paraguay is almost non-existent, being the only exception the mention of two currently missing vertebrate trackways, found in slabs of the sidewalks of the Iglesia de la Catedral and of the iglesia María Auxiliadora. It is...
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Christopher Adams
Pág. 442 - 454
Latest Precambrian to Ordovician metasedimentary successions and Cambrian-Ordovician and Devonian-Carboniferous granitoids form the major part of the basement of southern Zealandia and adjacent sectors of Antarctica and southeast Australia. Uplift/coolin...
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Jesus A. Sanchez,Jacobus P. Le Roux
Pág. 143 - 157
The Magellan Block, located on the modern Atlantic continental platform opposite the Strait of Magellan (Chile), consists of two parallel, northwest trending horsts partly separated by a central graben. Petroleum has been recovered from the Springhill Fo...
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Nikolai Berdnikov, Pavel Kepezhinskas, Natalia Konovalova and Nikita Kepezhinskas
Gold is typically transported by mafic and evolved magmas into the upper crust to be deposited in shallow oxidized porphyry and epithermal environments. However, the magmatic behavior of gold is still poorly understood and warrants further attention. Add...
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