Download The Proto-Andean Margin of Gondwana (Geological Society by R. J. Pankhurst, C. W. Rapela PDF

By R. J. Pankhurst, C. W. Rapela

The Palaeozoic geological background of western South the USA has been the focal point of extreme foreign curiosity within the previous few years. This publication brings jointly multidisciplinary learn and overview papers at the decrease Palaeozoic geology of the Sierras Pampeanas and the Precordillera of valuable west Argentina. It offers with the ultimate phases of meeting of the supercontinent of Gondwana and a interval of tectonic interplay with Laurentia (the North American continent of today). The proof for the expansion of this a part of the margin of Gondwana from past due Neoproterozoic instances is gifted when it comes to stratigraphy, palaeontology, igneous petrology, geochemistry and geochronology, and rival tectonic speculation are severely in comparison. at the very least episodes of subduction-related marginal basin closure and terrane accretion are documented and re-assessed. additionally on hand: The Geology of Chile - ISBN 1862392196 West Gondwana: Pre-Cenozoic Correlations around the South Atlantic zone - targeted booklet no 294 - ISBN 1862392471 The Geological Society of LondonFounded in 1807, the Geological Society of London is the oldest geological society on the planet, and one of many biggest publishers within the Earth sciences.The Society publishes a variety of fine quality peer-reviewed titles for lecturers and pros operating within the geosciences, and enjoys an enviable foreign popularity for the standard of its work.The many parts within which we put up in include:-Petroleum geology-Tectonics, structural geology and geodynamics-Stratigraphy, sedimentology and paleontology-Volcanology, magmatic stories and geochemistry-Remote sensing-History of geology-Regional geology publications

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Extra resources for The Proto-Andean Margin of Gondwana (Geological Society Special Publication No. 142)

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Paleoclimates and paleogeographic paths of the Argentine Precordillera during the Ordovician: evidence from climatically sensitive lithofacies. In: COOPER, J. , DROSER, M. L. & FINNEY, S. C. (eds) Ordovician Odyssey. Society of Economic Paleontologists and Mineralogists, Book 77, 177-180. --1995b. Geologic meaning of Arenig-Llanvirn diachronous black shales (Gualcamayo Alloformation) in the Argentine Precordillera, tectonic or eustatic? In: COOPER, J. , DROSER, M. L. & FINNEY, S. C. (eds) Ordovician Odyssey.

1992b. Did the Taconic Appalachians continue into Southern South America? Geology, 20, 1059-1062. DALZIEL, I. W. D. 1991. Pacific margins of Laurentia and East Antarctica as a conjugate rift pair: Evidence and implication for an Eocambrian supercontinent. Geology, 19, 598-601. - - 1 9 9 3 . Tectonic tracers and the origin of the protoAndean margin. XII Congreso Geol6gico Argentino y H Congreso de Exploraci6n de Hidrocarburos, Mendoza, Actas, III, 367-374. - - 1 9 9 7 . Neoproterozoic-Paleozoic geography and tectonics: review, hypothesis, environmental speculation.

PRECORDILLERA STRATIGRAPHY Middle and Upper Cambrian deep-water limestones and marlstones These rocks, which recently have been combined under the informal name of the 'La Cruz limestones' (Keller 1997), are mainly present as olistoliths within the Ordovician continental margin facies. Only the outcrop at Cerro Pelado shows these deep-water limestones in a presumably autochthonous position above peritidal dolomites of the La Flecha Formation. The limestones and marlstones are dark grey and fine grained, and thin- to medium-bedded.

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