The Sonoran Desert of Arizona and northern Sonora, Mexico, hosts some
of the wildest and most intriguing geology in the Southwest. In March
1990, the Geological Society of America’s Cordilleran Section met in
Tucson, Arizona, to review fresh geologic research and to visit a broad
suite of geologic settings.
The field trip guides from 19 field excursions – 5 in north-central
Sonora, Mexico, and 14 in central and southern Arizona – are reproduced
in the Arizona Geological Survey’s Special Paper #7, Geologic Excursions
through the Sonoran Desert Region, Arizona and Sonora’.
For a link to free download, see us at our new blog space http://blog.azgs.arizona.edu
NATURAL DYES: INDIGO
1 day ago