Sublayer and Offset Dikes of the Sudbury Igneous Complex—an Introduction and Field Guide

  • Lightfoot, P.C. Naldrett,A.J, Morrison G
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Abstract

This guide is split into two parts. The first part provides an overview of the geology of the Sudbury Ig- neousComplex (SIC), and attempts to synthesise some of the key pieces of datawhich bear on the origin of the Sublayer, Offsets, and the associated mineral deposits. The second part of the field guide docu- ments the geology type examples of aNorth Range embayment structure (located atWhistle Mine), and a South Range radial Offset Dyke (theWorthington Offset). The authors acknowledge the support of the Ontario Geological Survey in sponsoring a three year study of theSublayer andOffset environments. IncoExploration andFalconbridge Exploration provided access to properties, mineworking and drill core; they also provided access to unpublished exploration data. This guide was prepared for the 1997 Lunar PlanetaryConference meeting in Sudbury, and the 1998 InternationalMineralogical Associationmeeting in Toronto. B.O. Dressler andG. Johns are thanked for assistancewith the organisation of the LPI field trip and this guide. S. Cruden coordinated the IMAfield trips. 1

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Authors

  • G. Lightfoot, P.C. Naldrett,A.J, Morrison

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