Abstract
In this introduction, we briefly describe the project to produce a new tectonometamorphic map of the Canadian Shield. The design of the legend differs from that of traditional metamorphic maps by visually emphasizing differences in metamorphic ages, grade, as well as pressure regime. A web site has been established to facilitate the digital distribution of a 1:3,000,000 scale map of the Shield, in addition to 1:1,000,000 and 1:2,000,000 scale regional maps. Associated P–T, geochronological, and metamorphic assemblage databases for different parts of the Shield also are available. The legend design is illustrated with a simplified version of the 1:2,000,000 scale tectonometamorphic map of the Grenville Province in Quebec and Labrador, for which a brief summary is provided.
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