Ramsay, F.E.S., F.G.S., recently visited this country, and while here made some notes upon the geology of the Canadas, and the north-eastern ... that the whole of America south of the lakes ...

A map showing seismic speed in Earth’s crust at 125 miles depth across the continental U.S. and portions of Central America and Canada. The North American craton (outlined in black dashes) has a ...

Field experience is essential to geoscience education. This course will include a minimum of two weeks of intensive field work including note taking, mapping, analysis of geologic history and ...