Neogene fallout tuffs from the Yellowstone hotspot in the Columbia Plateau region, Oregon, Washington and Idaho, USA.

by Barbara P Nash, Michael E Perkins
Published 2012-01-01

Mineralogy and geochemistry of the main glauconite bed in the Middle Eocene of Texas: paleoenvironmental implications for the verdine facies.

by Sherie C Harding, Barbara P Nash, Erich U Petersen, A A Ekdale, Christopher D Bradbury, M Darby Dyar
Published 2014-01-01