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Xiaoning Du, Zhigang Zeng and Zuxing Chen
As one of the youngest back-arc basins, the evolutionary behavior of magmatic volatiles in the Eastern Manus Basin has been poorly studied. Recently, apatite has received widespread attention for its powerful function in recording information on magmatic...
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Rolf Kilian,Ernst Hegner,Steven Fortier,Muharrem Satir
Pág. 203 - 218
ABSTRACT. Miocene to Holocene volcanic rocks of Chimborazo and associated volcanoes in the Western Cordillera of Ecuador range in composition from basaltic andesite to rhyolite. They were erupted through Cretaceous accretionary mafic basement. Three calk...
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Rolf Kilian,Ernst Hegner,Steven Fortier,Muharrem Satir
Pág. 203 - 218
ABSTRACT. Miocene to Holocene volcanic rocks of Chimborazo and associated volcanoes in the Western Cordillera of Ecuador range in composition from basaltic andesite to rhyolite. They were erupted through Cretaceous accretionary mafic basement. Three calk...
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Zuxing Chen, Landry Soh Tamehe, Haiyan Qi, Yuxiang Zhang, Zhigang Zeng and Mingjiang Cai
The Yonaguni Knoll IV is an active seafloor hydrothermal system associated with submarine silicic volcanism located in the ?cross back-arc volcanic trail? (CBVT) in the southwestern Okinawa Trough. However, the behavior of volatiles during magmatic diffe...
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Charles R. Stern,Kiyoto Futa,Sandra Saul,Milka Alexandra Skewes
RESUMEN:Los xenolitos ultramaficos, incluidos en los basaltos pleistocenicos de Pali-Aike, que constituyen los afloramientos mas australes de las lavas patagonicas del sur de Sud ame rica, corresponden tanto a Iherzolitas con y sin granates, a harzburgit...
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Jack Dongarra,M. Abalenkovs,A. Abdelfattah,M. Gates,A. Haidar,J. Kurzak,P. Luszczek,S. Tomov,I. Yamazaki,A. YarKhan
Pág. 67 - 86
We present a review of the current best practices in parallel programming models for dense linear algebra (DLA) on heterogeneous architectures. We consider multicore CPUs, stand alone manycore coprocessors, GPUs, and combinations of these. Of interest is...
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Natalia Villalba,Hugo Murcia,Edith Jerez,Daniel Piedrahita,Dayana Schonwalder-Ángel,Andrés Pardo-Trujillo,Sebastián Echeverri
Pág. 181 - 200
The Combia Volcanic Province (~11-5 Ma), is a volcaniclastic sequence located in northwest Colombia between the Central and Western cordilleras at 5-6° N latitude. Its source is associated with the volcanic activity of the magmatic arc produced by the su...
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Torgeir B. Andersen, Johannes Jakob, Hans Jørgen Kjøll and Christian Tegner
The Pre-Caledonian margin of Baltica has been outlined as a tapering wedge with increasing magmatism towards the ocean?continent transition. It is, however, well known that margins are complex, with different and diachronous evolution along and across st...
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Stuart Hardy
The structural evolution of calderas is a key issue in volcanology and has profound implications for hazard analysis and the exploitation of geothermal energy and hydrothermal ores. However, their internal geometry at depth and the detailed fault and fra...
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Christian Creixell,Miguel angel Parada,Diego Morata,Paulina Vasquez,Carlos Perez de Arce,Cesar Arriagada
Pág. 37 - 63
The Middle-Late Jurassic mafic dike swarms of central Chile between 33º and 33º45'S register the tectonic activity of the contemporaneous arc represented by the Coastal batholith. These dike swarms evidence alternate episodes of transtension and transpre...
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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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Luis E. Lara,Jose A. Naranjo,Hugo Moreno
Pág. 241 - 258
Lanín volcano is a compound stratocone, mainly effusive, made up by four units defined through morphological criteria. The first unit represents an ancient volcano; the youngest three units form the present stratocone built since the Middle-Late Pleistoc...
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Kürsad Asan
This study presented whole-rock elemental and Sr-Nd isotope geochemistry data with the purpose to decipher the origin and evolution of the Miocene Elmadag Volcanic Complex, Central Anatolia (Ankara, Turkey). Volcanic products spanned in composition from ...
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Veronica Oliveros,Diego Morata,Luis Aguirre,Gilbert Feraud,Michel Fornari
Pág. 209 - 232
Jurassic to Early Cretaceous magmatism in the Coastal Cordillera of northern Chile is represented by thick sequences of mostly basaltic-andesitic to andesitic lava flows and minor sedimentary rocks. The volcanic sucession was intruded by large plutonio b...
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Larry D. Brown and Doyeon Kim
Crustal seismic reflection profiling has revealed the presence of extensive, coherent reflections with anomalously high amplitudes in the crystalline crust at a number of locations around the world. In areas of active tectonic activity, these seismic ?br...
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Rodrigo Gonzalez,Hans Niemeyer
Pág. 23 - 48
The interaction between basic and acid magmas has been widely recorded in batholiths and plutons from magmatic arcs. The Sierra de Varas Pluton (SVP), a zoned elliptical granitic body emplaced during the Carboniferous-Permian boundary (~300 Ma), and expo...
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Juan A. Dahlquist,Matías M. Morales Cámera,Juan A. Moreno,Miguel A.S. Basei,Priscila Zandomeni,Gilmara Santos da Cruz
Pág. 167 - 180
Previous geochronological data indicate a protracted Devonian magmatic activity developed in the Sierra de San Luis, Sierras Pampeanas of Argentina, with three major crystallization events: 393±3, 384±2, and 377±2 Ma. Previously reported whole-rock Sm-Nd...
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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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Qian Liu, Limei Tang, Ling Chen and Peng Gao
Seamounts are features generated by hot spots and associated intraplate volcanic activity. The geochemical characteristics of igneous rocks constituting seamounts provide evidence of important details of dynamic processes in the Earth, such as mantle mag...
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Gabriel Ureta, Károly Németh, Felipe Aguilera and Rodrigo González
Maar volcanoes are monogenetic landforms whose craters cut below the pre-eruptive surface and are surrounded by a tephra ring. Both the maar crater and the surrounding tephra rim deposits are typically formed due to magma?water explosive interactions. No...
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