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Research Article| April 01, 1971

Granitic Complexes and Associated Tin Mineralizations of 'Grenville' Age in Rondônia, Western Brazil

H. N. A PRIEM;

H. N. A PRIEM

Z.W.O. Laboratorium voor Isotopen-Geologie, De Boelelaan 1085, Amsterdam—11, The Netherlands

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N. A. I. M BOELRIJK;

N. A. I. M BOELRIJK

Z.W.O. Laboratorium voor Isotopen-Geologie, De Boelelaan 1085, Amsterdam—11, The Netherlands

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E. H HEBEDA;

E. H HEBEDA

Z.W.O. Laboratorium voor Isotopen-Geologie, De Boelelaan 1085, Amsterdam—11, The Netherlands

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E. A Th. VERDURMEN;

E. A Th. VERDURMEN

Z.W.O. Laboratorium voor Isotopen-Geologie, De Boelelaan 1085, Amsterdam—11, The Netherlands

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R. H VERSCHURE;

R. H VERSCHURE

Z.W.O. Laboratorium voor Isotopen-Geologie, De Boelelaan 1085, Amsterdam—11, The Netherlands

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E. H BON

E. H BON

Billiton Maatschappij N.V., Louis Couperusplein 19, 's Gravenhage, The Netherlands

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GSA Bulletin (1971) 82 (4): 1095–1102.

https://doi.org/10.1130/0016-7606(1971)82[1095:GCAATM]2.0.CO;2

Abstract

Relatively small acidic plutono-volcanic bodies (possibly sub.volcanic ring-complexes) have intruded the basement complexes in Rondônia, western Brazil, 980 ± 20 m.y. ago. Important tin mineralizations are genetically connected with this magmatism. Structural relationships and chemical composition suggest that this magmatic event was of anorogenic nature.

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