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Alan Santos Polo,Guo Weimin,Fernando Rivera,Colombo Tassinari,Luis Cerpa,Shoji Kojima
Pág. 445 - 470
Early Jurassic arc-related igneous rocks host porphyry copper prospects and gold-bearing quartz vein deposits in southern Peru. Ten new zircon U-Pb ages for wall rocks of gold-bearing quartz veins, Jurassic rocks and copper-mineralized porphyry bodies in...
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Christian Creixell,Javier Fuentes,Hessel Bierma,Esteban Salazar
Pág. 469 - 507
Cretaceous porphyry copper deposits of northern Chile (28º-29º30? S) are genetically related with dacitic to dioritic porphyries and they represent a still poorly-explored target for Cu resources. The porphyries correspond to stocks distributed into two ...
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Steven F. Olson
Pág. 3 - 29
ABSTRACT. The Potrerillos district displays major facies boundaries, records changes in the compositions of magmas from Jurassic to Oligocene time, and provides evidence that a porphyry copper deposit and associated skarn (37 Ma) formed between Jurassic-...
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José Cabello
Pág. 1 - 23
A review of gold and gold bearing base metals deposits in Chile, indicate the existence of at least six different type of ore deposits, most largely formed during the Cenozoic with predominance in the Miocene. Mesozoic deposits are common but less releva...
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Francisco Munizaga
Pág. 129 - 130
only in Spanish.
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Milka Alexandra Skewes,Willjam Atkinson Jr.
RESUMEN:La alteracion y mineralizacion en el deposito de cobre porfidico Los Pelambres, se encuentra estrechamente ligada a varios tipos de vetillas. Las vetillas mas tempranas asociadas a la mineralizacion de cobre han sido denominadas en trabajos previ...
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Nikolai Berdnikov, Victor Nevstruev, Pavel Kepezhinskas, Ivan Astapov and Natalia Konovalova
While gold partitioning into hydrothermal fluids responsible for the formation of porphyry and epithermal deposits is currently well understood, its behavior during the differentiation of metal-rich silicate melts is still subject of an intense scientifi...
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Ailiang Gu and Christopher John Eastoe
Cenozoic evaporites (gypsum and anhydrite) in southwestern North America have wide ranges of d34S (-30 to +22?; most +4 to +10?) and d18OSO4 (+3 to +19?). New data are presented for five basins in southern Arizona. The evaporites were deposited in playas...
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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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Ivan Garrido,Jose Cembrano,Armando Sina,Peter Stedman,Gonzalo Yanez
Pág. 43 - 54
The Andean segment between 31 and 34°S documents a unique Tertiary tectono-magmatic evolution that involves the generation of three world-class Late Miocene porphyry copper deposits: Los Pelambres, Río Blanco-Los Bronces and El Teniente. The genesis of t...
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Estanislao Godoy
Pág. 155 - 158
Only in Spanish
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Ivan Garrido,Jose Cembrano,Armando Sina,Peter Stedman,Gonzalo Yanez
Pág. 131 - 135
Only in Spanish.
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Mirta Garrido,Eduardo Dominguez
Pág. 91 - 108
RESUMEN. En el yacimiento tipo de cobre porfidico La Voluntad, la alteracion y mineralizacion se relacionan a una tonalita del Complejo Plutonico Chachil (Permico) que intruye a metamorfitas de la Formacion Piedra Santa (Paleozoico Inferior). Volcanitas ...
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Mirta Garrido,Eduardo Dominguez
Pág. 91 - 108
RESUMEN. En el yacimiento tipo de cobre porfidico La Voluntad, la alteracion y mineralizacion se relacionan a una tonalita del Complejo Plutonico Chachil (Permico) que intruye a metamorfitas de la Formacion Piedra Santa (Paleozoico Inferior). Volcanitas ...
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Charles R. Stern
Pág. 145 - 162
ABSTRACT. Between the Pliocene and the Present the volcanic belt from 33-34°S, at the northern end of the Southern Volcanic Zone (SVZ) of the Andes, narrowed into a single chain of volcanoes as the volcanic front migrated 35 km to the east and the bounda...
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Charles R. Stern
Pág. 145 - 162
ABSTRACT. Between the Pliocene and the Present the volcanic belt from 33-34°S, at the northern end of the Southern Volcanic Zone (SVZ) of the Andes, narrowed into a single chain of volcanoes as the volcanic front migrated 35 km to the east and the bounda...
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Abdallah Atef, Adel A. Surour, Ahmed A. Madani and Mokhles K. Azer
Since Antiquity, sustainable resources of gold and copper have been mined at two prominent prospects in the north Eastern Desert of Egypt, namely the south Gabel Um Monqul (SGUM) and Gabal Al Kharaza (GKZ). Mineralization is hosted by Neoproterozoic shie...
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M. Alexandra Skewes,Carmen Holmgren
Pág. 71 - 83
ABSTRACT. Andean uplift, erosion and emplacement of mineralized breccias in the Los Bronces porphyry copper deposit, central Chile (33°S): application of fluid inclusion geothermometry. Thermometric information from fluid inclusions indicates that during...
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Jose Frutos J.
RESUMEN:La ubicaci?n geol?gico-geogr?fica de los yacimientos de cobre porf?dico o diseminado (porphyry copper) en la Cuenca Geosinclinal Andina Chilena, parece estar directamente controlada por la evoluci?n tect?nica de ella. En tal sentido la ubicaci?n ...
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Marcial R. Maturana,Nicolas Saric
Pág. 109 - 120
El yacimiento de cobre y molibdeno Zaldivar, en el extremo norte del distrito de la mina La Escondida, corresponde a un porfido cuprifero en el cual el desarrollo de un horizonte de enriquecimiento secundario permitio la formacion de un deposito economic...
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