Structural and topographic relief along the eastern margin of the Rio Grande rift, northern
New Mexico, provides a remarkable cross-section through the 26-Ma Questa caldera and …

Observations of the distribution of tectonic features and their relationship to local surface
topography indicate that the floor of the oldest and largest crater of the summit caldera of …

The study of the mechanics of caldera formation can yield valuable insight into the
behaviour of near-surface magma chambers and their mechanical interaction with the crust …

Alkaline and ultramafic lamprophyre dykes at Aillik Bay on the coast of central Labrador
exhibit features indicative of volatile-rich conditions at the time of emplacement. Aillikites …

A critical review of US volcanological research from the period 1987-1990 is presented.
Topics examined include eruptions, explosive volcanism, effusive volcanism, volcanic mass …

Vertical, orthogonal joint sets in the Willow Creek welding zone of the Bachelor caldera
formed in response to a 90 change in the minimal stress direction during resurgent doming …

In his address to the Seismological Society of America in Seattle, Aki (1980) discussed the
role of s. tro~ g mo~ on seismology." Our goal is to compute seIsmIC motIon expected at …