Petrology of Tertiary and Quaternary volcanic rocks, Washington County, southwestern Utah

Mineralogy and petrology of Quaternary lavas from the Snake River Plain, Idaho

Geochemistry of late Cenozoic lavas from eastern Indonesia: Role of subducted sediments in petrogenesis

Upper Paleozoic rocks of the western Canadian Cordillera and their bearing on Cordilleran evolution

Petrology and mineral chemistry of peridotite nodules included in Tertiary basaltic rocks of northeast Brazil

Timber Mountain–Oasis Valley caldera complex of southern Nevada

Stratigraphy, paleogeography, and tectonic setting of the Coldbrook Group in the Caledonia Highlands of southern New Brunswick

Minor-element abundances in obsidian, perlite, and felsite of calc-alkalic rhyolites

An estimate of the oxygen isotope composition of a large segment of the Canadian Shield in northwestern Ontario

Volcanic rocks of the Blake River Group, Abitibi Greenstone Belt, Ontario, and their sulfur content

Compositional variations of young basalts in the Mid-Atlantic Ridge rift valley near lat 36°49′N

Upraised Pacific Ocean floor, southern Malaita, Solomon Islands

Santa Monica and Santa Ana Mountains—Relation to Oligocene Santa Barbara Basin : DISCUSSION

Revised stratigraphy of the Takla Group, north-central British Columbia

Relationships between uranium and trace metal concentrations in volcanic rocks from Nevada

Reconnaissance geology of coastal Sonora between Puerto Lobos and Bahia Kino

Timing of spreading in the South Atlantic: Information from Brazilian alkalic rocks

East-west patterns of Cenozoic igneous rocks, aeromagnetic anomalies, and mineral deposits, Nevada and Utah

Distribution, correlation, and radiocarbon dating of late Holocene tephra, Mono and Inyo craters, eastern California

The Recent volcanology of Terceira, Azores