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K–Ar dates on granitoids from Archipiélago Cabo de Hornos, southernmost Chile

Published online by Cambridge University Press:  01 May 2009

M. Suárez ,
A. Puig  and
M. Hervé
M. Suárez
Affiliation:
Servicio Nacional de Geología y Minería, Agustinas No.785-6° Piso, Casilla 10465 Santiago, Chile
A. Puig
Affiliation:
Servicio Nacional de Geología y Minería, Agustinas No.785-6° Piso, Casilla 10465 Santiago, Chile
M. Hervé
Affiliation:
Servicio Nacional de Geología y Minería, Agustinas No.785-6° Piso, Casilla 10465 Santiago, Chile
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Abstract

New K–Ar mineral dates from calc-alkaline granitoids of the Archipiélago Cabo de Hornos, in the southernmost tip of South America, range from 97 to 117 Ma. This confirms that the early Cretaceous was a period of major plutonic activity in the region and expands previous radiometric information on the Patagonian Batholith concerning migration of intrusion foci with time.

Type
Articles
Information
Geological Magazine , Volume 123 , Issue 5 , September 1986 , pp. 581 - 584
Copyright
Copyright © Cambridge University Press 1986

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References

Barker, P. F. & Dalziel, I. W. D., 1983. Progress in geodynamics in the Scotia Arc region. In Geodynamics of the Eastern Pacific Region, Caribbean and Scotia Arcs (ed. Cabre, R.). Geodynamics Series, volume 9. American Geophysical Union & Geological Society of America.CrossRefGoogle Scholar
Dalziel, I. W. D., De Wit, M. J. & Palmer, K. F. 1974. Fossil marginal basin in the Southern Andes. Nature 250, 291–4.CrossRefGoogle Scholar
Halpern, M. 1973. Regional geochronology of Chile south of 50° latitude. Bulletin of the Geological Society of America 84, 2407–22.2.0.CO;2>CrossRefGoogle Scholar
Halpern, M. & Rex, D. C. 1972. Time of folding of the Yahgán Formation and age of the Tekenika Beds, Southern Chile, South America. Bulletin of the Geological Society of America 83, 1881–6.CrossRefGoogle Scholar
Hervé, M., Suárez, M. & Puig, A. (1984). The Patagonian Batholith S of Tierra del Fuego, Chile: timing and tectonic implications. Journal of the Geological Society of London 141, 909–17.CrossRefGoogle Scholar
Pitcher, W. S. & Berger, A. R. 1972. The geology of Donegal: a study of granite emplacement and unroofing. Wiley Interscience: New York, London, Sydney, Toronto.Google Scholar
Puig, A., Hervé, M., Suárez, M. & Saunders, A. D. 1984. Calc-alkaline and alkaline Miocene and calc-alkaline Recent volcanism in the southernmost Patagonian Cordillera, Chile. Journal of Volcanology and Geothermal Research 20, 149–63.CrossRefGoogle Scholar
Steiger, R. H. & JäGer, E. 1977. Subcommission on geochronology: convention on use of decay constants in geo- and cosmochronology. Earth and Planetary Science Letters 36, 359–62.CrossRefGoogle Scholar
Suárez, M. 1977. Notas geoquímicas preliminares del Batolito Patagónico al sur de Tierra del Fuego, Chile. Revista Geológica de Chile 4, 15–33.Google Scholar
Suárez, M. 1978. Geología del área al sur del Canal Beagle. Carta Geológica de Chile N° 36. Instituto de Investigaciones Geológicas, Chile.Google Scholar
Suárez, M. 1979. A late Mesozoic island arc in the southern Andes, Chile. Geological Magazine 116, 181–90.CrossRefGoogle Scholar
Suárez, M. & Pettigrew, T. H. 1976. An Upper Mesozic island-arc back-arc basin in the Southern Andes and South Georgia. Geological Magazine 113, 305–28.CrossRefGoogle Scholar