Publications
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Rise of a variable-viscosity fluid in a steadily spreading wedge-shaped conduit with accreting walls Rise of a variable-viscosity fluid in a steadily spreading wedge-shaped conduit with accreting walls
Relatively rigid plates making up the outer 50 to 100 km of the Earth are steadily separating from one another along narrow globe-circling zones of submarine volcanism, the oceanic spreading centers. Continuity requires that the viscous underlying material rise beneath spreading centers and accrete onto the steadily diverging plates. It is likely that during the rise the viscosity...
Authors
Arthur H. Lachenbruch, Manuel Nathenson
Electronic thermal sensor and Data Collection Platform technology: Part 5 in Thermal surveillance of active volcanoes using the Landsat-1 Data Collection System Electronic thermal sensor and Data Collection Platform technology: Part 5 in Thermal surveillance of active volcanoes using the Landsat-1 Data Collection System
Five Data Collection Platforms (DCP) were integrated electronically with thermall sensing systems, emplaced and operated in an analog mode at selected thermally significant volcanic and geothermal sites. The DCP's transmitted 3260 messages comprising 26,080 ambient, surface, and near-surface temperature records at an accuracy of ±1.15 °C for 1121 instrument days between November 14, 1972...
Authors
Duane M. Preble, Jules D. Friedman, David Frank
Chemical compositions of Kilauea east-rift lava, 1968–1971 Chemical compositions of Kilauea east-rift lava, 1968–1971
The major element chemical compositions of lava from four eruptions on the east rift zone of Kilauea between August 1968 and October 1971 reflect three petrologic processes: Production of chemically distinct batches of magma in the mantle. Separation of olivine, augite, and plagioclase from liquid during flow in the rift-zone conduits. Mixing of different magmas during ascent to the...
Authors
Thomas L. Wright, Don Swanson, Wendell A. Duffield
Mechanism of Formation of Pillow Lava Mechanism of Formation of Pillow Lava
Much of the ocean floor is covered by lava of a distinctive character. The lava appears to be made up of closely packed ellipsoidal masses about the size and shape of pillows - hence the term pillow lava. Only within the last few years has the abundance of pillow lava on the ocean floor been fully recognized. Ocean-bottom photographs and dredge samples have shown that the great bulk of...
Authors
James G. Moore