Implications of the Miocene(?) Crooked Ridge River of northern Arizona for the evolution of the Colorado River and Grand Canyon Open Access

Landslide Preconditions and Collapse of the San Francisco Mountain Composite Volcano, Arizona, into Cold Debris Avalanches in Late Pleistocene Available to Purchase

Cenozoic paleogeography of the central Mogollon Rim–southern Colorado Plateau region, Arizona, revealed by Tertiary gravel deposits, Oligocene to Pleistocene lava flows, and incised streams Available to Purchase

The association basanitic nephelinite; feldspar ijolite-nepheline monzosyenite at House Mountain Volcano, north-central Arizona Available to Purchase

Regional significance of recurrent faulting and intracanyon volcanism at Oak Creek Canyon, southern Colorado Plateau, Arizona Available to Purchase

Significance of agglutinate mounds on lava flows associated with monogenetic cones: An example at Sunset Crater, northern Arizona Available to Purchase

Petrology of Alkalic Gneiss in the Dahomeyan of Ghana Available to Purchase

Some Garnets, Pyroxenes, and Amphiboles From Nepheline Gneisses in Ghana Available to Purchase