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Mauro Ignacio Bernardi,Gustavo Walter Bertotto,Alexis Daniel Ponce,Yuji Orihashi,Hirochika Sumino
Pág. 279 - 299
The El Puesto lava flow is located in the Payenia Volcanic Province (central-western Argentina), has a length of 70 km and is Middle Pleistocene in age (0.200±0.027 Ma). The flow shows a P-type pahoehoe structure and exhibits several inflation structures...
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Mauro Ignacio Bernardi,Gustavo Walter Bertotto,Yuji Orihashi,Hirochika Sumino,Alexis Daniel Ponce
Pág. 490 - 525
The basaltic lava flows located in the southeast of Payenia Volcanic Province, Argentina, show lengths between 40 and 181 km. These flows have transversal sections characterized by external vesicular crusts that surround a massive core hosting vesiculate...
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Martina Misuraca, Francesca Budillon, Renato Tonielli, Gabriella Di Martino, Sara Innangi and Luciana Ferraro
A closely spaced set of high-resolution Chirp-Sonar and Sparker profiles and swath bathymetric data was acquired in 2013 for the I-AMICA Project off the Volturno River mouth (Southern Tyrrhenian Sea) by the Istituto per l’Ambiente Marino Costiero (...
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Giovanni Barreca, Marta Corradino, Carmelo Monaco and Fabrizio Pepe
The offshore margin of Mt. Etna has been shaped by Middle Pleistocene to Holocene shortening and extension and, more recently, by gravity-related sliding of the volcanic edifice. These processes have acted contemporaneously although the gravitational com...
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Yota Suzuki, Seiichiro Ioka and Hirofumi Muraoka
To promote geothermal development in Aomori Prefecture, Japan, this study compiled a database of the geothermal resources of the prefecture, which included chemical data for 786 hot springs, temperature data for 26 natural springs, and subsurface tempera...
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Gary S. Michelfelder, Todd C. Feeley, Alicia D. Wilder and Erik W. Klemetti
To better understand the origin of across-strike K2O enrichments in silicic volcanic rocks from the Andean Central Volcanic Zone, we compare geochemical data for Quaternary volcanic rocks erupted from three well-characterized composite volcanoes situated...
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Juan Manuel Álvarez Cerimedo,Darío Orts,Emilio Rojas Vera,Andrés Folguera,Germán Bottesi,Víctor A. Ramos
Pág. 504 - 520
The eastern Andean orogenic front at 36ºS shows unique attributes when compared to neighbor segments, from an anomalous eastward development of the orogenic front area due to the uplift of a zone of reduced topography in the foothills constituting a pre-...
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Jonathan E. Tobal,Emilio Rojas Vera,Andrés Folguera,Victor A. Ramos
Pág. 442 - 463
This geological study, carried out in the Cordón del Hielo Azul, west of the town of El Bolsón (Río Negro province, Argentine), shows the different relationships between the Early Jurassic cordilleran volcano-sedimentary sequence, the Middle-Late Jurassi...
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Felipe Espinoza,Diego Morata,Mireille Polve,Yves Lagabrielle,Rene Maury,Aude de la Rupelle,Christele Guivel,Joseph Cotten,Herve Bellon,Manuel Suarez
Pág. 300 - 328
We presenta chronological (K-Ar), petrologic and geochemical study (major and trace elements, SrNd isotopes) ofMiddle Miocene (ca. 16-14 Ma) calc-alkaline rocks (basalts to andesites) extruded in the present-day back-arc region ofCentral Patagonia (Zebal...
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Katja Deckart,Estanislao Godoy,Alfredo Bertens,Ayesha Saeed
Pág. 1 - 31
Four Middle-to-Late Miocene barren plutonic complexes that occur between the giant porphyry copper deposits of the central Chilean Andes were selected for U-Pb LA-ICPMS geochronology and Hf-isotope systematics on single zircon grains. Major and trace ele...
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