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Yu Pei, Hans Hagdorn, Thomas Voigt, Jan-Peter Duda and Joachim Reitner
Following the end-Permian crisis, microbialites were ubiquitous worldwide. For instance, Triassic deposits in the Germanic Basin provide a rich record of stromatolites as well as of microbe-metazoan build-ups with nonspicular demosponges. Despite their p...
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Denisse de la Fuente,Óscar Figueroa,Daniel Demaiffe,Mauricio Mella,Paul Duhart,David Quiroz,Jorge Muñoz,Verónica Oliveros
Pág. 24 - 53
Upper Cretaceous intrusives of limited extent crop out in the Coastal Cordillera near of Valdivia (39º48? S), 100 km west of the main topographic divide of the Andean Cordillera. Given that plutonic rocks of the same age crop out at the same latitudes in...
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Aditya Pratama, Satria Bijaksana, Mirzam Abdurrachman and Nono Agus Santoso
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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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Tarun C. Khanna, V. V. Sesha Sai, S. H. Jaffri, A. Keshav Krishna and M. M. Korakoppa
In this contribution, we present detailed field, petrography, mineral chemistry, and geochemistry of newly identified high-Si high-Mg metavolcanic rocks from the southern part of the ~3.3 Ga Holenarsipur greenstone belt in the western Dharwar craton, Ind...
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Irene R. Hernando,Eduardo J. Llambias,Pablo D. Gonzalez,Kei Sato
Pág. 158 - 179
The Payun Matru Volcanic Field is located in the Payenia Basaltic Province of the recent back-arc of western Argentina (35°S-38°S). This province is younger than 5 Ma, and most of its volcanic activity took place since 2 Ma. The Payun Matru Volcanic Fiel...
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Juan Pablo Lacassie,Francisco Herve,Barry Roser
Pág. 199 - 220
The Duque de York Complex constitutes a post-Early Permian to pre-Early Cretaceous metasedimentary succession that crops out at the Madre de Dios and Diego de Almagro archipelagos along the Chilean Patagonian Andes. The petrography and geochemistry of sa...
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Leopoldo Lopez-Escobar,Rolf Kilian,Pamela D. Kempton,Michio Tagiri
Pág. 33 - 55
RESUMEN. Petrografia y geoquimica de rocas cuaternarias de la Zona Volcanica Sur de los Andes entre los 41°30? y 46°00?S, Chile. Los centros volcanicos del frente cuaternario de la Zona Volcanica Sur (ZVS) de los Andes, ubicados entre las latitudes 41°30...
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Salvador M. Harambour
Pág. 173 - 179
RESUMEN. Se da a conocer el descubrimiento de un aparato volcanico de edad pleistocena a reciente, al que se propone denominar Reclus, en la cuenca de alimentacion del glaciar Amalia, vertiente occidental del Hielo Patagonico Sur, 50°57'50"S; 73°35'W. Co...
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