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Marco Filippi, Davide Zanoni, Gisella Rebay, Manuel Roda, Alessandro Regorda, Jean-Marc Lardeaux and Maria Iole Spalla
The Southern Alps are the retro-vergent belt of the European Alps that developed from Late Cretaceous subduction to Neogene times. The most prominent Alpine thrusts and folds, nowadays sealed off by the Adamello intrusion, were already developed before t...
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Elizabeth J. Catlos, Chandra S. Dubey and Thomas M. Etzel
The Sikkim region of the Himalayas (NE India) may form an important microplate between Nepal and Bhutan. Here we report high-resolution pressure-temperature (P-T) paths taken from garnet-bearing rocks across the northern and eastern portion of the region...
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Vasiliy Sukhorukov, Valeriya Volkova, Peter Nevolko and Pavel Kozlov
Metamorphic processes play a key role in forming orogenic gold deposits. In this paper, we present new evidence that host schists of the two largest gold deposits of the Yenisey ridge (Russia) Olympiada and Eldorado underwent a single stage of metamorphi...
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Carlos Dino Ramacciotti,César Casquet,Edgardo Gaspar Baldo,Sebastián Osvaldo Verdecchia,Matías Martín Morales,Priscila Soledad Zandomeni
Pág. 526 - 555
The Sierra de Pie de Palo (SPP, Western Sierras Pampeanas) shows evidence of two regional metamorphisms: one Mesoproterozoic attributed to the Grenvillian orogeny and other of Ordovician age related to the Famatinian orogeny. The Neoproterozoic-to-Cambri...
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Kiara L. Alessio, Martin Hand, Laura J. Morrissey, David E. Kelsey and Justin L. Payne
Phase equilibria modelling incorporating melt reintegration offers a methodology to create hypothetical rock compositions that may have existed prior to melt loss, allowing the potential prograde evolution of rocks to be explored. However, melt reintegra...
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Margarita Do Campo, Fernando Nieto, Guillermo L. Albanesi, Gladys Ortega, Rubén Monaldi
Pág. 179 - 212
The thermal post-depositional evolution of metapelitic and metavolcanic rocks of the upper CambrianOrdovician
succession in the Central Andes of northwestern Argentina, was estimated through X ray diffraction of clay
mineral analysis, Kübler Index (KI),...
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Stuart N. Thomson,Francisco Herve
Pág. 255 - 271
Fission-track (FT) analysis was performed on ten samples of detrital zircons from several pre-Late Jurassic metamorphic accretionary complexes at the ancestral Pacific margin of Gondwana in southern Chile (42-52°S) previously dated by U-Pb SHRIMP. Post-m...
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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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Willem B. Stern,Josef Mullis,Meinert Rahn,Muyuan Sun,Martin Frey
Pág. 127 - 135
RESUMEN. La forma del primer pico de difraccion de rayos X de 'illita', cristalinidad y metamorfismo incipiente. En un perfil a lo largo de los Alpes suizos, se muestrearon 88 rocas sedimentarias, litologicamente diferentes, formadas bajo condiciones de ...
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Willem B. Stern,Josef Mullis,Meinert Rahn,Muyuan Sun,Martin Frey
Pág. 127 - 135
RESUMEN. La forma del primer pico de difraccion de rayos X de 'illita', cristalinidad y metamorfismo incipiente. En un perfil a lo largo de los Alpes suizos, se muestrearon 88 rocas sedimentarias, litologicamente diferentes, formadas bajo condiciones de ...
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Robin Offler,Covadonga Brime
Pág. 285 - 293
ABSTRACT. Investigation of the crystallinity of K-white micas in early Permian rocks from the Nambucca Block, NSW, reveals a metamorphic pattern with the highest grade (epizonal) rocks in an east-west trending zone which changes transitionally to lower g...
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Robin Offler,Covadonga Brime
Pág. 285 - 293
ABSTRACT. Investigation of the crystallinity of K-white micas in early Permian rocks from the Nambucca Block, NSW, reveals a metamorphic pattern with the highest grade (epizonal) rocks in an east-west trending zone which changes transitionally to lower g...
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Agnieszka Dudzinska, Natalia Howaniec and Adam Smolinski
Propylene and acetylene are released to mine air with the increase in the temperature of self-heating coal. Concentrations of these gases in mine air are applied as indicators of the progress of the self-heating process. Hydrocarbons emitted from the sel...
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Zsolt Benkó, Aberra Mogessie, Ferenc Molnár, Steven A. Hauck, Mark J. Severson and Karl Ettinger
In the contact metamorphic aureole of the Duluth Complex, Cu-Ni-PGE mineralization occurs locally up to 100 m from the intrusion-footwall contact (Spruce Road area), whereas elsewhere (Dunka Pit deposit) the footwall granite and metapelite (Serpentine de...
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George L. Guice, Iain McDonald, Hannah S. R. Hughes, Denis M. Schlatter, Kathryn M. Goodenough, John M. MacDonald and John W. Faithfull
The relative depletion of high field strength elements (HFSE), such as Nb, Ta and Ti, on normalised trace-element plots is a geochemical proxy routinely used to fingerprint magmatic processes linked to Phanerozoic subduction. This proxy has increasingly ...
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Maria E. Vattuone de Ponti,Carlos O. Latorre
Pág. 187 - 200
RESUMEN. Rocas volcanicas de edad paleocena-eocena que corresponden a la Formacion Ventana, en las cercanias de San Martin de los Andes, han sufrido metamorfismo regional de muy bajo grado con facies de ceolita, prehnita, pumpellyita y transicional a esq...
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Maria E. Vattuone de Ponti,Carlos O. Latorre
Pág. 187 - 200
RESUMEN. Rocas volcanicas de edad paleocena-eocena que corresponden a la Formacion Ventana, en las cercanias de San Martin de los Andes, han sufrido metamorfismo regional de muy bajo grado con facies de ceolita, prehnita, pumpellyita y transicional a esq...
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Gilda Collo,Margarita Do Campo,Fernando Nieto
Pág. 284 - 318
The metamorphic P-T conditions of low-grade units from the Famatina belt, Central Andes of Ar¬gentina, were estimated through petrography, X-ray diffraction, and electron microscopy. For the Middle-Upper Cambrian Negro Peinado Formation a tectono-metamor...
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Marcia Munoz,Luis Aguirre,Mario Vergara,Alain Demant,Francisco Fuentes,Andres Fock
Pág. 54 - 77
In the El Volcán and Rodeo de los Bueyes areas, Andean Principal Cordillera (east of Santiago; 33º50'S), an Upper Oligocene-Lower Miocene volcanic series belonging to the Abanico Formation (Late Eocene-Early Miocene) is exposed. The rock successions outc...
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