Evidence for Long Periods Between Fillings in Sheeted Clastic Dikes
Crosscutting relationships establish the order of events in a sheeted clastic dike exposed near TriCities, WA. 1.) Injection of yellow...
Ancient Flood Beds at White Bluffs
An exotic clast-bearing conglomerate at White Bluffs Overlook was left by an ancient Ice Age flood. The post-Ringold unconformity appears...
Calcretes Arrive Around 7?
Calcretes are hard pan soils that form in semi-arid to arid climates. Calcretes - at least pedogenic CaCO3 cements - first appear in...
