Información del autor
Autor Pankhurst, R.J. |
Documentos disponibles escritos por este autor (44)
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Galindo Francisco, Mª del Carmen ; Pankhurst, R.J. ; Casquet, César ; Coniglio, Jorge ; Baldo, Edgardo G. ; Rapela, Carlos W. ; Saavedra, Julio | Taylor & Francis | 1997Fluorite mineralization at the La Nueva and Bubu mines yields Sm-Nd ages of 131 ± 22 and 117 ± 26 Ma, respectively. Thus, the mineralization most probably is related to a late Gondwanian (Lower Cretaceous) extensional and magmatic event that aff[...]texto impreso
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Rapela, Carlos W. ; Pankhurst, R.J. ; Casquet, César ; Fanning, C.M. ; Galindo Francisco, Mª del Carmen ; Baldo, Edgardo G. | Sociedad Geológica de España | 2005The Neoproterozoic Difunta Correa meta-sedimentary sequence (DCSS) of Western Sierras Pampeanas is a cover to a rejuvenated Grenvillian basement. The Western Sierras Pampeanas are allegedly part of the exotic Precordillera Terrane, which was acc[...]texto impreso
Casquet, César ; Pankhurst, R.J. ; Galindo Francisco, Mª del Carmen ; Rapela, Carlos W. ; Fanning, C.M. ; Baldo, Edgardo G. ; Dahlquist, Juan A. ; González Casado, José Manuel ; Colombo, F. | Elsevier Science B.V., Amsterdam | 2008A deformed ca. 570Ma syenite–carbonatite body is reported from a Grenville-age (1.0–1.2 Ga) terrane in the Sierra de Maz, one of theWestern Sierras Pampeanas of Argentina. This is the first recognition of such a rock assemblage in the basement o[...]texto impreso
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Alasino, Pablo H. ; Dahlquist, Juan A. ; Pankhurst, R.J. ; Galindo Francisco, Mª del Carmen ; Casquet, César ; Rapela, Carlos W. ; Larrovere, M.A. ; Fanning, C.M. | Elsevier Science B. V., Amsterdam | 2012A recently discovered granitic intrusion at Cerro La Gloria in western Sierra de Famatina (NW Argentina) is representative of sub- to mid-alkaline Carboniferous magmatism in the region. The main rock type consists of microcline, quartz and plagi[...]texto impreso
Galindo Francisco, Mª del Carmen ; Baldo, Edgardo G. ; Pankhurst, R.J. ; Casquet, César ; Rapela, Carlos W. ; Saavedra, Julio | Sociedad Geológica de España | 1996The fluorite mineralization from the La Nueva Mine, has a Sm-Nd age of 130 ± 19 Ma, and thus must be related to the Lower Cretaceous late-Gondwanic extensional and magmatic event that affected the Sierras Pampeanas Basement of Argentina. Hydroth[...]texto impreso
Dahlquist, Juan A. ; Alasino, Pablo H. ; Galindo Francisco, Mª del Carmen ; Pankhurst, R.J. ; Rapela, Carlos W. ; Saavedra, Julio ; Casquet, César ; Baldo, Edgardo G. ; González Casado, José Manuel ; Fanning, C.M. | Asociación Geológica Argentina. Buenos Aires | 2006-03El granate es un mineral accesorio poco común en rocas ígneas y constituye un tema relevante de la petrología ígnea. Estudios combinados de petrología, química mineral, geoquímica de roca total y geoquímica isotópica en el cerro Asperecito indic[...]texto impreso
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Casquet, César ; Rapela, Carlos W. ; Pankhurst, R.J. ; Baldo, Edgardo G. ; Galindo Francisco, Mª del Carmen ; Fanning, C.M. ; Dahlquist, Juan A. | Elsevier Science B. V., Amsterdam | 2012Metasedimentary high-pressure upper amphibolite facies gneisses (1.2±0.1 GPa and 780±45 °C) at Las Chacras, Sierra de Valle Fértil, are tectonically juxtaposed to thewesternmost parts (outboard) of the Famatinian (Early Ordovician) magmatic arc,[...]texto impreso
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Casquet, César ; Galindo Francisco, Mª del Carmen ; Rapela, Carlos W. ; Pankhurst, R.J. ; Baldo, Edgardo G. ; Dahlquist, Juan A. ; Fanning, C.M. ; González Casado, José Manuel ; Saavedra, Julio | Instituto Geológico y Minero de España | 2005Massif-type anorthosites are igneous complexes that consist for the most part of anorthosite, a plagioclase- rich plutonic rock. They are particularly abundant within or near the worldwide Grenvillian mobile belt (1.0-1.2Ga), which resulted from[...]texto impreso
Casquet, César ; Pankhurst, R.J. ; Rapela, Carlos W. ; Galindo Francisco, Mª del Carmen ; Dahlquist, Juan A. ; Baldo, Edgardo G. ; Saavedra, Julio ; González Casado, José Manuel ; Fanning, C.M. | Geological Society of London. | 2004-01We report the discovery of massif-type anorthosites in the Andean basement of the Western Sierras Pampeanas of Argentina. U–Pb zircon dating (by sensitive high-resolution ion microprobe) of a cogenetic gabbronorite dyke yields ages of 1070 ± 41 [...]texto impreso
Dahlquist, Juan A. ; Pankhurst, R.J. ; Gaschnig, Richard M. ; Pankhurst, R.J. ; Rapela, Carlos W. ; Casquet, César ; Alasino, Pablo H. ; Galindo Francisco, Mª del Carmen ; Baldo, Edgardo G. | Elsevier Science B. V., Amsterdam | 2013Wereport the first study integrating in situ U–Pb and Hf isotope data frommagmatic zircon andwhole-rock Sm–Nd isotope data for granitic rocks of the Sierras Pampeanas, Argentina, in order to evaluate the Palaeozoic growth of the proto-Andean mar[...]texto impreso
Casquet, César ; Rapela, Carlos W. ; Pankhurst, R.J. ; Baldo, Edgardo G. ; Galindo Francisco, Mª del Carmen ; Fanning, C.M. ; Dahlquist, Juan A. ; Saavedra, Julio | Elsevier B.V. | 2012The role played by Paleoproterozoic cratons in southern South America from the Mesoproterozoic to the Early Cambrian is reconsidered here. This period involved protracted continental amalgamation that led to formation of the supercontinent Rodin[...]texto impreso
Casquet, César ; Baldo, Edgardo G. ; Pankhurst, R.J. ; Rapela, Carlos W. ; Galindo Francisco, Mª del Carmen ; Fanning, C.M. ; Saavedra, Julio | Geological Society of America | 2001New data suggest that the eastern margin of the Argentine Precordillera terrane comprises Grenvillian basement and a sedimentary cover derived from it that were together affected by Middle Ordovician deformation and metamorphism during accretion[...]texto impreso
Fanning, C.M. ; Pankhurst, R.J. ; Rapela, Carlos W. ; Baldo, Edgardo G. ; Casquet, César ; Galindo Francisco, Mª del Carmen | Geological Society of London. | 2004New U–Pb radiometric dates for K-bentonite horizons within the Lower Cambrian to Middle Ordovician platform carbonates from the Precordillera terrane of NWArgentina provide further constraints on models for the allochthonous or parautochthonous [...]texto impreso
Rapela, Carlos W. ; Casquet, César ; Baldo, Edgardo G. ; Dahlquist, Juan A. ; Pankhurst, R.J. ; Galindo Francisco, Mª del Carmen ; Saavedra, Julio | Universidad Complutense de Madrid | 2001El margen proto-andino de Gondwana ha sido el escenario de al menos dos orogénesis desde el desmembramiento del supercontinente Rodinia al final del Neoprotrozoico, hasta el reagrupamiento de las masas continentales en Pangea al final del Carbon[...]texto impreso
Alasino, P.H ; Casquet, César ; Pankhurst, R.J. ; Rapela, C.W. ; Dahlquist, J.A ; Galindo Francisco, María del Carmen ; Larrovere, M.A. ; Recio, C. ; Paterson, S.R. ; Colombo, F. ; Baldo, E.G. | Geological Society of America | 2016-04We studied the petrogenesis of mafic igneous rocks in the Famatinian arc in the western Sierra Famatina (NW Argentina), an Early Ordovician middle-crustal section in the proto-Andean margin of Gondwana. Mafic rock types consist of amphibolite, m[...]texto impreso
Rezaei Kahkaei, Mehdi ; Galindo Francisco, Mª del Carmen ; Pankhurst, R.J. ; Esmaeily, Dariush | Elsevier | 2011Geochemical and isotopic data (Sr, Nd) are presented for the Khalkhab–Neshveh pluton, an E-W elongated body of quartz monzogabbro, quartz monzodiorite, granodiorite and granite in the Urumieh– Dokhtar magmatic arc of Central Iran. The plutonic r[...]texto impreso
Dahlquist, Juan A. ; Galindo Francisco, Mª del Carmen ; Pankhurst, R.J. ; Rapela, Carlos W. ; Alasino, Pablo H. ; Saavedra, Julio ; Fanning, C.M. | Elsevier Science B.V., Amsterdam | 1995Garnet is an uncommon accessory mineral in igneous rocks but is petrologically significant. The Peñón Rosado granite (469± 4Ma) at Cerro Asperecito is an S-type granite that contains an unusual amount of magmatic garnet. Combined petrology, chem[...]texto impreso
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Verdecchia, Sebastián ; Casquet, César ; Baldo, Edgardo G. ; Pankhurst, R.J. ; Rapela, Carlos W. ; Fanning, C.M. ; Galindo Francisco, Mª del Carmen | Geological Society of London. | 2011The Early Palaeozoic stratigraphy and tectonic history of the Eastern Sierras Pampeanas of central Argentina are complicated by metamorphism and deformation resulting from the Pampean (545–510 Ma) and Famatinian (490–440 Ma) orogenies. We report[...]texto impreso
Baldo, Edgardo G. ; Casquet, César ; Pankhurst, R.J. ; Galindo Francisco, Mª del Carmen ; Rapela, Carlos W. ; Fanning, C.M. ; Dahlquist, Juan A. ; Murra, Juan Alberto | Blackwell Publishing Ltd | 2006A-type orthogneisses of mid Neoproterozoic age (774 ± 6 Ma, U-Pb SHRIMP zircon age), are reported for the first time from the Grenvillian basement of the Western Sierras Pampeanas in Argentina. These anorogenic meta-igneous rocks represent the l[...]texto impreso
Dahlquist, Juan A. ; Pankhurst, R.J. ; Rapela, Carlos W. ; Galindo Francisco, Mª del Carmen ; Alasino, Pablo H. ; Fanning, C.M. ; Saavedra, Julio ; Baldo, Edgardo G. | Instituto de Ciencias de la Tierra "Jaume Almera" (Barcelona) | 2008New SHRIMP U-Pb zircon ages are reported for igneous and sedimentary rocks of the Famatina Complex, constraining the age of the magmatism and the ensialic basins. Together with whole-rock and isotope geochemistry for the igneous rocks from the c[...]texto impreso
Alasino, Pablo H. ; Casquet, César ; Galindo Francisco, Mª del Carmen ; Pankhurst, R.J. ; Rapela, Carlos W. ; Dahlquist, Juan A. ; Recio, C. ; Baldo, Edgardo G. ; Larrovere, Mariano Alexis ; Ramacciotti, Carlos | Cambridge University Press | 2020We report a study of whole-rock O–H–Sr–Nd isotopes of Ordovician igneous and metamorphic rocks exposed at different crustal palaeodepths along c. 750 km in the Sierras Pampeanas, NW Argentina. The isotope compositions preserved in the intermedia[...]texto impreso
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Casquet, César ; Dahlquist, Juan Andrés ; Verdecchia, Sebastián Osvaldo ; Baldo, Edgardo ; Rapela, Carlos W. ; Galindo Francisco, Mª del Carmen ; Pankhurst, R.J. ; Morales, Matias M. ; Murra, Juan Alberto ; Fanning, C.M. | Elsevier | 2018-02The Pampean orogeny of northern Argentina resulted from Early Cambrian oblique collision of the Paleoproterozoic-Mesoproterozoic MARA block, formerly attached to Laurentia, with the Gondwanan Kalahari and Rio de la Plata cratons. The orogen is p[...]texto impreso
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Murra, Juan Alberto ; Baldo, Edgardo G. ; Galindo Francisco, Mª del Carmen ; Casquet, César ; Pankhurst, R.J. ; Rapela, Carlos W. ; Dahlquist, Juan A. | Instituto de Ciencias de la Tierra "Jaume Almera" (Barcelona) | 2011The Sierra Brava Complex on the eastern flank of the Sierra de Ancasti consists of marbles, metabasites, calc-silicate rocks, psammo-pelitic schists and gneisses. In the central part of this sierra a thick succession of banded schists (Ancasti F[...]texto impreso
Galindo Francisco, Mª del Carmen ; Casquet, César ; Rapela, Carlos W. ; Pankhurst, R.J. ; Baldo, Edgardo G. ; Saavedra, Julio | Elsevier Science B.V., Amsterdam | 2004Sr, C and O isotope data are presented for carbonate rocks from the Sierra de Pie de Palo and other crystalline outcrops of the Western Sierras Pampeanas. These are used to distinguish three groups of rocks of quite different ages within the nap[...]texto impreso
Casquet, César ; Fanning, C.M. ; Galindo Francisco, Mª del Carmen ; Pankhurst, R.J. ; Rapela, Carlos W. ; Torres , P. | Elsevier Science B.V., Amsterdam. | 2010The enigmatic Arequipa Massif of southwestern Peru is an outcrop of Andean basement that underwent Grenville-age metamorphism, and as such it is important for the better constraint of Laurentia–Amazonia ties in Rodinia reconstruction models. U–P[...]texto impreso
Alasino, Pablo H. ; Casquet, César ; Larrovere, M.A. ; Pankhurst, R.J. ; Galindo Francisco, Mª del Carmen ; Dahlquist, Juan A. ; Baldo, Edgardo G. ; Rapela, Carlos W. | Elsevier Science B.V., Amsterdam | 2014A sheeted tonalite complex at Cerro Toro in western Sierra de Famatina, Argentina, was emplaced in the middle crust during an early phase of the Ordovician Famatinian orogeny. The intrusion produced a large-scale thermal aureole that provoked si[...]texto impreso
Casquet, César ; Hervé, F. ; Pankhurst, R.J. ; Baldo, Edgardo G. ; Calderón, M. ; Fanning, C.M. ; Rapela, Carlos W. ; Dahlquist, Juan A. | Elsevier | 2014The Mejillonia terrane, named after the Mejillones Peninsula (northern Chile), has been traditionally considered an early Paleozoic block of metamorphic and igneous rocks displaced along the northern Andean margin in the Mesozoic. However, U–Pb [...]texto impreso
Casquet, César ; Pankhurst, R.J. ; Rapela, Carlos W. ; Galindo Francisco, Mª del Carmen ; Fanning, C.M. ; Chiaradia, Massimo ; Baldo, Edgardo G. ; González Casado, José Manuel ; Dahlquist, Juan A. | Elsevier Science B. V., Amsterdam | 2008The rocks of Sierra de Maz and Sierra del Espinal (Western Sierras Pampeanas) represent pre-Famatinian (Ordovician) basement. Isotope compositions (Nd and Pb) of metasedimentary rocks and SHRIMP U–Pb dating of detrital zircons, combined with oth[...]texto impreso
Rapela, Carlos W. ; Fanning, C.M. ; Casquet, César ; Pankhurst, R.J. ; Spalletti, Luis ; Poiré, Daniel ; Baldo, Edgardo G. | Elsevier Science B. V., Amsterdam | 2011The Neoproterozoic to Early Cambrian amalgamation of SW Gondwana through the Brasiliano/Pan-African orogeny is reviewed with emphasis on the role of the Río de la Plata craton of South America in the light of new evidence from a borehole at the [...]texto impreso
Rapela, Carlos W. ; Pankhurst, R.J. ; Casquet, César ; Fanning, C.M. ; Baldo, Edgardo G. ; González Casado, José Manuel ; Galindo Francisco, Mª del Carmen ; Dahlquist, Juan A. | Elsevier Science B.V., Amsterdam | 2007The extent and nature of the Archaean–Palaeoproterozoic craton of Río de la Plata of southern South America, a major but poorly understood crustal component in Neoproterozoic plate reconstructions, as well as the depositional, metamorphic and ma[...]texto impreso
Dahlquist, Juan A. ; Pankhurst, R.J. ; Rapela, Carlos W. ; Casquet, César ; Fanning, C.M. ; Alasino, Pablo H. ; Baez, Miguel | Elsevier Science B.V., Amsterdam. | 2006New geochronological and geochemical data are reported for the San Blas Pluton (SBP), in the northwestern Sierra de Velasco, Sierras Pampeanas, which intrudes Ordovician granitoids developed during the Famatinian orogeny. A precise Carboniferous[...]texto impreso
Iannizzotto, Noelia F. ; Rapela, Carlos W. ; Baldo, Edgardo G. ; Galindo Francisco, Mª del Carmen ; Fanning, C.M. ; Pankhurst, R.J. | Elsevier Science B.V., Amsterdam. | 2013The Sierra Norte-Ambargasta batholith is one of the largest plutonic expressions of the Pampean orogeny in western Argentina. A thorough petrographic, geochemical, isotopic (Sr and Nd) and geochronological (UePb SHRIMP) study is reported. The ba[...]texto impreso
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Rapela, Carlos W. ; Pankhurst, R.J. ; Casquet, César ; Baldo, Edgardo G. ; Galindo Francisco, Mª del Carmen ; Fanning, C.M. ; Dahlquist, Juan A. | Elsevier Science B.V., Amsterdam. | 2010New U–Pb SHRIMP zircon ages combined with geochemical and isotope investigation in the Sierra de Maz and Sierra de Pie de Palo and a xenolith of the Precordillera basement (Ullún), provides insight into the identification of major Grenville-age [...]texto impreso
Colombo, F. ; Baldo, Edgardo G. ; Casquet, César ; Pankhurst, R.J. ; Galindo Francisco, Mª del Carmen ; Rapela, Carlos W. ; Dahlquist, Juan A. ; Fanning, C.M. | Elsevier Science B.V., Amsterdam | 2009Two orthogneisses have been recognized in the sierras of Espinal and Maz (Western Sierras Pampeanas, NW Argentina) that were emplaced within a Grenvillian metasedimentary sequence. Microcline, plagioclase and quartz are the main rock-forming min[...]texto impreso
Casquet, César ; Pankhurst, R.J. ; Fanning, C.M. ; Baldo, Edgardo G. ; Galindo Francisco, Mª del Carmen ; Rapela, Carlos W. ; González Casado, José Manuel ; Dahlquist, Juan A. | Elsevier Science B. V., Amsterdam | 2006Metamorphism of Grenvillian age (ca. 1.2 Ga; U–Pb zircon dating) is recognized for the first time in the Western Sierras Pampeanas (Sierra de Maz). Conditions reached granulite facies (ca. 780 °C and ca. 780 MPa). Comparing geochronological and [...]