ผู้เขียน: Richard W. Ojakangas

You may have heard that Minnesota’s ten thousand lakes are the hoofprints of Paul Bunyan’s ox, Babe. ‘Don’t you believe it!’ writes Richard Ojakangas, author of the newly released Roadside Geology of …

The 10th International Basement Tectonics Conference was conducted on the campus of the University of Minnesota, Duluth, in Duluth, Minnesota, USA, from August I through August 11, 1992. A total of …