 | | Book | | Universidad de Concepci6n Casilla 4107 Concepci6n, Chile ISBN 978-3-642-88284-5 DOI 10.1007/978-3-642-88282-1.... . . . 37 The Metalliferous Ore Deposits of Chile and Argentina, and Their Geologic Framework J. Oyarzun.... . . . . . . . . . . 147 X Contents El Aguilar Mine: An Ordovician Sediment-Hosted Stratiform Lead-Zinc...Sulfides in the Greenstone Belt of South-Central Chile - An Overview G. Alfaro and S. Callao . . . . ....Formation and Massive Sulfide Orebodies, South-Central Chile: Geologic and Isotopic Aspects S. Callao, G. Alfaro |  | | Journal (article/letter/editorial) | | particularly IS epithermal orebodies in any particular district, irrespective of whether or not paleosurface features...lithocap of the Marte porphyry gold deposit, northern Chile (see Sillitoe 1994). b Steam-heated alteration exposed...Norte HS gold-silver orebody at La Coipa, northern Chile. Note its white, friable character. c Steam-heated...peripheral to the La Coipa HS-IS gold-silver district, Chile. f Hydrothermal breccia, generated by shallow-seated...steam-heated zone, Pascua-Lama HS gold-silver deposit, Chile. Geologist stands just left of contact with non-brecciated |  | Gómez Peral, Lucía E., Poiré, Daniel G., Strauss, Harald, Zimmermann, Udo (2007) Chemostratigraphy and diagenetic constraints on Neoproterozoic carbonate successions from the Sierras Bayas Group, Tandilia System, Argentina. Chemical Geology, 237 (1) 109-128 doi:10.1016/j.chemgeo.2006.06.022 | Journal (article/letter/editorial) | | into the Villa Mónica (sandstones and dolomites), Cerro Largo (siliciclastic rocks) and Loma Negra (limestones)...(limestones) formations, unconformably overlain by the Cerro Negro Formation (siliciclastic rocks with basal marls)...the age of the overlying siliciclastic dominated Cerro Largo Formation is poorly constrained. Awhole rock...age of 769± 12 Ma on the same unit. The age of Cerro Negro Formation, the youngest unit in the Sierras Bayas...a minimum depositional age of 680 Ma for the Cerro Negro Formation. This age is consistent with the recent |  | | Thesis/Dissertation | | Descripción del área de estudio 13 Trabajos citados en el texto 15 CAPÍTULO 2: GEOLOGÍA REGIONAL 16 Introducción...Antecedentes Metalogenéticos 45 Trabajos citados en el texto 46 CAPÍTULO 3: MARCO TECTÓNICO 57 Introducción...Evolución Tectónica 63 Trabajos citados en el texto 64 CAPÍTULO 4: EL MAGMATISMO CRETÁCICO SUPERIOR-TERCIARIO...y Conclusiones parciales 89 Trabajos citados en el texto 91 Lic. Salvioli Melisa A. Tesis Doctoral...Conclusiones parciales 128 Trabajos citados en el texto 131 CAPÍTULO 6: GEOQUÍMICA MINERAL 134 |  | Bastias, Joaquin, Calderón, Mauricio, Israel, Lea, Hervé, Francisco, Spikings, Richard, Pankhurst, Robert, Castillo, Paula, Fanning, Mark, Ugalde, Raúl (2020) The Byers Basin: Jurassic-Cretaceous tectonic and depositional evolution of the forearc deposits of the South Shetland Islands and its implications for the northern Antarctic Peninsula. International Geology Review, 62 (11). 1467-1484 doi:10.1080/00206814.2019.1655669 | Journal (article/letter/editorial) | | Departamento de Geología, Universidad de Chile, Santiago, Chile; bEarth Sciences Department, Université...Universidad Andres Bello, Sazie 2119, Santiago, Chile; dVisiting Research Associate, British Geological...Ciencias, Universidad Mayor, Providencia, Santiago, Chile; h PEDECIBA Geociencias, Facultad de Ciencias, Universidad...Departamento de Geología, Universidad de Chile, Plaza Ercilla 803, Santiago, Chile Supplemental data for this article...subaerial and non-marine volcaniclastic rocks of the Cerro Negro Formation (Figure 3). 2.1.1 Anchorage formation |  | | Book | | RASTELLI Buenos Aires - 1999 2 Tapa: Vista hacia el sur desde la Puerta de las Angosturas, ruta provincial...virtudes y la influencia que Roberto Caminos tuvo en el progreso del conocimiento geológico de nuestro país...este libro de Geología Argentina, del cual fue desde el comienzo su editor, es una excelente oportunidad...Ciencias Geológicas en el viejo edificio de Perú y Alsina, donde tenía su sede el Departamento de Ciencias...Buenos Aires. Nuestro contacto formal recién fue en el segundo cuatrimestre, durante una clase de análisis |  | | Journal (article/letter/editorial) | | of sediments (Sierras Bayas Group), in which the Cerro Largo Formation, ca. 750 Ma in age, forms a siliciclastic...Geological background The Tandilia Belt (Fig. 1) in the province of Buenos Aires (Argentina) is a NW–SE trending...formations (Villa Mónica, Cerro Largo, Loma Negra formations) and the Cerro Negro Formation which is separated...of more than 730 Ma for the Cerro Negro Formation and the underlying Cerro Largo Formation (Kawashita...overlying Cerro Largo Formation (Bonhomme and Cingolani, 1980; Cingolani and Bonhomme, 1988). The Cerro Largo |  | Gómez-Peral, Lucía E., Kaufman, Alan J., Arrouy, María Julia, Richiano, Sebastián, Sial, Alcides N., Poiré, Daniel G., Ferreira, Valderez P. (2018) Preglacial palaeoenvironmental evolution of the Ediacaran Loma Negra Formation, far southwestern Gondwana, Argentina. Precambrian Research, 315. 120-137 doi:10.1016/j.precamres.2018.07.005 | Journal (article/letter/editorial) | | younger than 600 Ma (age of the underlying iron-rich mudstone of the Colombo Formation). This extended carbonate...oriented, orographic belt located in the Buenos Aires province (Fig. 1). This cover is composed of Cryogenian...Bayas Group include the Villa Mónica, Colombo, Cerro Largo, Olavarría and Loma Negra formations (Fig...Providencia Group comprises the Avellaneda, Alicia and Cerro Negro formations (Arrouy et al., 2015; Fig. 2). In...Barker area the Sierras Bayas Group and the Cerro Negro Formation (upper part of La Providencia Group) |  | | Book | | org/details/geologyofchile0000unse The Geology of Chile • The Geologica l Society of London Books Editorial...T. & GIBBO, s, W . (eds) 2007 . The Geology of Chile. The Geological Society, London. CHARRIER, R., PINTO...the Andean Orogeo in Chile. Jn: MORENO, T. & GrnsoNs, W. (eds) The Geology of Chile. The Geological Society...Society, London, 21-114. The Geology of Chile EDITED BY TERESA MORENO Earth Sciences Institute 'J aume...Grosjean 13. Field excursion from central Chile to the Atacama De<,crt. W. Gibbons & -1. Moreno 329 |  | Pons, Josefina, Franchini, Marta, Meinert, Lawrence, López-Escobar, Leopoldo, Maydagán, Laura (2010) Geology, petrography and geochemistry of igneous rocks related to mineralized skarns in the NW Neuquén basin, Argentina: Implications for Cordilleran skarn exploration. Ore Geology Reviews, 38 (1) 37-58 doi:10.1016/j.oregeorev.2010.05.006 | Journal (article/letter/editorial) | | Universidad de Concepción, Casilla 160-C, Concepción-3, Chile a r t i c l e i n f o Article history: Received...Neuquén (Paleogene Campana Mahuida, Caicayén and Cerro Nevazón) and SW Mendoza (Neogene Vegas Peladas and...shallow depths. The Vegas Peladas, Hierro Indio, and Cerro Nevazón igneous rocks have similar major and trace...than the Cerro Nevazón rocks, whose skarns have higher Au concentrations. In the Caicayén district, small... Rb, Sr, Ba, La, Ce, and Th) than the Mendoza, Cerro Nevazón and Caicayén igneous rocks. This suggests |  | Maghfouri, Sajjad, Hosseinzadeh, Mohammad Reza, Moayyed, Mohsen, Movahednia, Mehdi, Choulet, Flavien (2017) Geology, mineralization and sulfur isotopes geochemistry of the Mari Cu (Ag) Manto-type deposit, northern Zanjan, Iran. Ore Geology Reviews, 81. 10-22 doi:10.1016/j.oregeorev.2016.10.025 | Journal (article/letter/editorial) | | important Cu mineralization in Iran (Fig. 1). In Chile, the strata- NU bound Cu deposits are the second...the sedimentary-hosted deposits class (e.g., Cerro Negro), and the volcanic-hosted deposits class (e.g...northwestern part of Canada and in the North Michigan district (e.g. White, 1968; Wilton & Sinclair, 1988). Most...thickness of 1.5 km, and is exposed mainly in the Mari district (Figs. 3 and 4). The succession is composed SC...g., Asiabanha et al., 2009), and organic-rich mudstone in the lower part of the MA succession (Allen |  | | Journal (article/letter/editorial) | | de amonites del Jurfisico Medio en Antofagasta, Atacama, Mendoza y Neuqu6n. - - Rev. Geol. Arg., XXII,...65--78. Buenos Aires 1967. Z~IL, W.: Geologic von Chile. - - Beitr~ige zur Regionalen Geologic der Erde...Gliederung der Unterkreide.Serien in der Provinz Atacama Chile Veil HERMANNJURGAN,Berlin *) Mit 88 Abbildungen...Sedimentfolge der marinen Unterkreide in der Provinz Atacama, Chile, wurde zwischen Copiap6 (27 ~ S) nnd Domeyko...Copiap6 (27 ~ S) and Domeyko (29~ S), Province Atacama, Chile. Ammonites allowed to distinguish a lower |  | | Report (issue) | | and Bolivia. 18 Section E. The sierras of the District of Buenos Aires. Section F. The southern pre-cordilleran...by Professor Walther7 on the Borings for Coal in Cerro Largo, Uruguay, and one by Senor E. T. Arocena8...Marechal Mallet, Rio Claro, Porto Uniao, and Rio Negro to Curityba enabled the Devonian as well as the...reported therefrom by Guillemain, while Melo, Paso del Cerro, Santa Rosa, and Sauce were also visited. In Buenos...Barreal, and across the Andes to Val¬ paraiso in Chile and back to Buenos Aires; this enabled the various |  | | Report (issue) | | de Payachata Volcanic Group at 18°S in northern Chile. The two stratocones, Volcan Parinacota (6,348 m)...Jurassic Proto-Marginal Basin; Southern Andes, Chile and Argentind .......... 0. ccc cece cece R. E....of the Triassic to Jurassic Plutonism of Central Chile (30 to 33°S); Petrogenetic Implications and a Tectonic...Range and Altiplano (257305126 30'S)\ Northern Chile 015 oe iag ones 28 00) Gh Wide 5) pad ew ee HAM... Central Andes, Northern Chile; An Ordovician Continental Volcanic Province .......... 0c cece cece cence |  | | Report (chapter) | | Bayas Group is unconformably overlain by the Cerro Negro Formation, which includes tide-dominated deposits...authors suggest correlation of the Cerro Largo, Loma Negra and Cerro Negro formations (Fig. 4) with the lower...Cerradinho Fm. Cadieus Fm. Ghaub Fm. (636 Ma)© Cerro Largo Fm { £ Puga Fm. 630 Ma Santa Cruz Fm....Yerbal Fm. (580 Ma) ñ Passo da Areia Fm. Cerro Negro Fm. Sierras Bayas Group Polanco Fm. Acampamento...Barriga Negra Fm. w Santa Bárbara Fm. 890–770 Ma Cerro Espuelita Fm. Camaquã Group Arroyo del Soldado |  | Li, Chunxiang, Moran, Robbin C., Ma, Junye, Wang, Bo, Hao, Jiasheng, Yang, Qun (2020) A mid-Cretaceous tree fern of Thyrsopteridaceae (Cyatheales) preserved in Myanmar amber. Cretaceous Research, 105. 104050 doi:10.1016/j.cretres.2019.01.002 | Journal (article/letter/editorial) | | “Robinson Crusoe Islands”) off the Pacific coast of Chile. Thyrsopteris 42 is the only extant genus recognized...studied here was collected from the Myitkyina District, Kachin State (26º20′N, 51 96º36′E), in the...Hukawng Valley of northern Myanmar at an active mine located near Noije Bum 52 Village, Tanaing (Tanai)...Jarzembowski et al., 2017). Amber 53 from this mine has been dated stratigraphically and radiometrically...greyish to bluish-green 81 volcanoclastic to mudstone, the amber is usually from the finer facies of |  | | Report (issue) | | of the Topsy Formation, Lituya District, Gulf of Alaska Tertiary Province, Alaska By LOUIE MARINCOVICH...of the Topsy Formation, Lituya District, Gulf of Alaska Tertiary Province, Alaska, by Louie Marincovich...in the shallow warm-water faunas of the Tethyan province of most areas during Middle Jurassic to Late Cretaceous...which was described originally from the French Province of Gard, was included by Mazeran in his new species...Maestrichtian) of Comparapolliam in the Trichinopoly district in southern India shows a remarkable similarity |  | | Report (volume) | | application of mineral deposit models to classic mining areas in Bolivia. The data that result from these...United States. Bolivia has a long and important mining history, and mineral resources will probably continue...development of future exploration and investment of the mining industry in nontraditional areas of the Andean...Cordillera Oriental, Cerro Rico de Potosi being the best example. After hundreds of years of mining, these deposits...effort to promote the development of the Bolivian mining sector, TDP provided a grant of $2 million to the |  | McCollom, Thomas M., Donaldson, Chris, Moskowitz, Bruce, Berquó, Thelma S., Hynek, Brian (2018) Phosphorous Immobility During Formation of the Layered Sulfate Deposits of the Burns Formation at Meridiani Planum. Journal of Geophysical Research: Planets, 123 (5) 1230-1254 doi:10.1029/2017je005493 | Journal (article/letter/editorial) | | perspective, the fate of P was also investigated at Cerro Negro (CN) volcano, Nicaragua, which is being studied...(2013a) supplemented with more recent data. The Cerro Negro data are also supplied as a supplemental spreadsheet...used to investigate acid-sulfate alteration of Cerro Negro basalt as described in McCollom et al. (2013b)...supplemental materials. Briefly, basalt cinders from Cerro Negro (6 g, 2-10 mm diameter), apatite (109 mg), and...alteration in fumarolic environments at Cerro Negro volcano Cerro Negro (CN) is a small, young cinder cone |  | | Report (issue) | | deposits, or a formally designated mining district. For some mining districts described in this report...individual deposits within the district are also given. This was done so that district-scale phenomena, such as...as zoning, could be described in the district record, whereas deposit specific data could be described...individual mines and mining claims. MINING DISTRICT/AREA Name of the mining district or geographical area...area to which the deposit belongs. 11 PROVINCE The Republic of Bolivia is divided into 9 departments |  | Ballivián Justiniano, Carlos A., Lanfranchini, Mabel E., Recio, Clemente, de Barrio, Raúl E., Sato, Ana María, Basei, Miguel A.S., Pimentel, Marcio M., Etcheverry, Ricardo O., Tassinari, Colombo C.G. (2017) Geology and petrogenetic considerations of the Loma Marcelo skarn, Neoproterozoic basement of the Ventania System, Argentina. Precambrian Research, 302. 358-380 doi:10.1016/j.precamres.2017.09.021 | Journal (article/letter/editorial) | | granites (ca. 607–581 Ma) crop out in the Cerro Pan de Azúcar-Cerro del Corral area and host the Loma Marcelo...Aires Province 1 Introduction The Ventania System, or Sierras Australes of Buenos Aires Province, is...1a) in the southeastern part of the Buenos Aires Province, Argentina (Fig. 1b). It constitutes part of the...System or Sierras Septentrionales of Buenos Aires Province (Fig. 1c). The Ventania System is mainly composed...Neoproterozoic basement crops out in the Cerro Pan de Azúcar-Cerro del Corral area (Fig. 2), one of the most |  | | Book | | Sandstone Diamictite, shale, limestone Dolostone Mudstone and limestone Cuiabá Group Puga Formation Diamictite...m thick has been mined at the underground Urucum Mine, and three other thinner Mn horizons (0.3021.0 m)...in pelites of the Guaicurus Formation at Laginha Mine, Corumbá, MS, which was interpreted as gravity...lithofacies, including grainstone, packstone, mudstone and stromatolites (Figure 2.8). In the Serra da...sediments, mainly the Ventuari-Tapajós and Rio Negro-Juruena provinces (Tassinari and Macambira, 1999) |  | Leary, Stephen, Sillitoe, Richard H., Stewart, Peter W., Roa, Karl J., Nicolson, Benjamin E. (2016) Discovery, Geology, and Origin of the Fruta del Norte Epithermal Gold-Silver Deposit, Southeastern Ecuador. Economic Geology, 111 (5) 1043-1072 doi:10.2113/econgeo.111.5.1043 | Journal (article/letter/editorial) | | Discovery History Early and district-scale exploration The gold mining history of southern Ecuador predates...1986). However, there is no direct evidence for any mining in the immediate Fruta del Norte area at that time...to the border region. Small-scale alluvial gold mining using suction dredges and excavators began in the...and west of Fruta del Norte. The first hard-rock mining followed the discovery in the early 1990s of exposed...1996, although sporadic alluvial and hard-rock mining continues in the area today. The first company |  | | Journal (article/letter/editorial) | | Universidad Nacional de Río Negro, Av. Roca. 1242 (8332), General Roca, Río Negro, Argentina; 4 Departamento...Palangana, as well as from other localities (e.g., Cerro Redondo, Pico Salamanca, Las Violetas, Gaiman)....encompass the Chubut Province. The striped gray area, in southeast Chubut Province, encompasses map in...(1941) did mention the Ernestokokenia fauna from the Cerro Redondo and Gaiman localities as well, but without...a bentonitic matrix, intercalated within pale mudstone and sandstone successions (Simpson, 1935c) (Fig |  | | Report (issue) | | of Geological Sciences University of Texas at El Paso El Paso, Texas 79912 United States and James L....biostratigraphy of the La Casita Formation (Upper Jurassic), Cerro Los Panales, Chihuahua, Mexico .Ill G. Olmstead...northeast Mexico: Allogenic meta-igneous blocks in El Papalote evaporite diapir, La Popa basin, Nuevo Leon...the eastern Gulf of Mexico province and the western Pacific Mexico province, where Gulf of Mexico-driven...geologic provinces in Mexico. In the Gulf of Mexico province, the tectonic evolution is dominated by passivemargin |
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