Evidences bearing on the time involved in the deposition of the fossil forests of the Specimen Creek area, Yellowstone National Park, Montana.

Volcanic rocks of the Santa Maria Province, California

Mount St. Helens National Volcanic Monument Completion Act.

Quaternary geology of the Granite Park area, Grand Canyon, Arizona aggradation-downcutting cycles, calibration of soils stages, and response of fluvial system to volcanic activity

Isotopic and chemical evidence concerning the genesis and contamination of basaltic and rhyolitic magma beneath the Yellowstone Plateau Volcanic Field

P and S velocity structure of the Yellowstone volcanic field from local earthquake and controlled-source tomography

Interactive display of geologic features and hazards of the Mono Basin--Long Valley region, California

Quarterly report : test site no. 11 Yellowstone National Park.

Interpretive map and guide to the volcanic geology of Chiricahua National Monument and vicinity, Cochise County, Arizona

Whole-rock and mineral chemical compositional data for lower crustal and upper mantle xenoliths from the Cima volcanic field, San Bernardino County, California

Effects of the eruptions of Mount St. Helens on physical, chemical, and biological characteristics of surface water, ground water, and precipitation in the Western United States

Calderas of the San Juan volcanic field, southwestern Colorado : eighteen major ash-flow tuff sheets were deposited and perhaps as many related calderas developed during emplacement of an underlying shallow batholith in late Oligocene time