Geologic data, especially conodont paleotemperatures, imply that southeastern Canada and New England have been elevated at least 4 km relative to the central Appalachian region. Apatite fission-track ages suggest that the uplift and consequent erosion occurred in Cretaceous–early Tertiary time, consistent with the formation of a broad swell as North America moved northwestward over the Great Meteor hotspot.

First Page Preview

First page PDF preview
You do not currently have access to this article.