Ramp-Flat Geometry within the Central Kapuskasing Uplift? Evidence from Potential Field Modeling Results

Abstract

Potential field data constrained by seismic reflection, seismic refraction, geologic, and physical-properties data have been used to study the deep crustal structure of the central Kapuskasing uplift. The Val Rita block is interpreted as a thrust sheet of granulites detached at mid-crustal depths and uplifted along a ramp producing an arched, double granulite layer. A thin thrust sheet of southward-thickening granulites best describes the Groundhog River bloc, whereas simple thrusting along a ramp characterizes the Chapleau block. From this interpretation, a sequential evolution of the Kapuskasing uplift is proposed.

Department(s)

Geosciences and Geological and Petroleum Engineering

Keywords and Phrases

Crustal Structure; Potential Field Data; Ramp-flat Geometry; Seismic Survey; Tectonic Evolution; Thrust; Canada, Ontario, Kapuskasing Uplift

International Standard Serial Number (ISSN)

0008-4077

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1994 National Research Council of Canada, All rights reserved.

Publication Date

01 Jul 1994

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