What people are saying - Write a review
We haven't found any reviews in the usual places.
Geologic Maps Areal and Regional Geology including Guidebooks
12 other sections not shown
Other editions - View all
aeromagnetic map America associated Auth basin beds Bull Canada central changes chemical clay composition consists contains contour intervals County Cretaceous deposits Dept depth described determined discussed distribution DISTRICT early earth fault field figs flow folds Formation gammas Geological Survey Geophysics Geophysics Paper granite ground water increase indicate John Jour LAKE late layer limestone locally lower magnetic major material measurements method minerals Mines Mountains natural Nauk SSSR North occur Ontario origin Petroleum Pleistocene position possible present probably production QUADRANGLE range refs region Research Resources River rocks samples sand sandstone scale Science sedimentary sediments shale Society species stratigraphic structure suggested surface tables thick tion translation U.S. Geol units upper Valley volcanic wave western zone