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Archaean wrench-fault tectonics in the Abitibi greenstone belt of CanadaA tectonic model is proposed in which the southern Abitibi belt formed in a series of rift basins which dissected an earlier formed volcanic arc. Comparisons can be made with Phanerozoic areas such as, the Hokuroko basin of Japan, the Taupo volcanic zone of new Zealand and the Sumatra and Nicaragua volcanic arcs. In addition the identification of the major E - W thrust shears make it possible to speculate that the southern Abitibi belt comprises a collage of blocks of terrane which have been accreted against a more stable continental margin or microcontinent. If this interpretation is correct analogies can be made with the SW margin of the U.S.A. in which recently formed blocks of volcanic terrane are being accreted against its western margin.
Document ID
19860013639
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Hubert, C. (Montreal Univ. Quebec)
Date Acquired
August 12, 2013
Publication Date
January 1, 1986
Publication Information
Publication: Lunar and Planetary Inst. Workshop on the Tectonic Evolution of Greenstone Belts
Subject Category
Geophysics
Accession Number
86N23110
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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IDRelationTitle19860013618Collected WorksWorkshop on the Tectonic Evolution of Greenstone Belts
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