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Two diamictons in a landslide scarp on Admiralty Island, Alaska, and the tectonic insignificance of an intervening peat bed

Two till-like diamictons, 700 feet above present sea level on Admiralty Island, Alaska, are separated by peat near the top of a landslide scarp. The lower diamicton is glaciomarine; the upper diamicton is probably a mudflow. The lower diamicton contains the foraminifer Elphidium clavatum Cushman, a species typical of fiords.  Similar diamicton crops out along Gastineau Channel near Juneau, 15 mile
Authors
Robert D. Miller

Geological, geophysical, and engineering investigations of the Loveland Basin landslide, Clear Creek County, Colorado, 1963-65

No abstract available.
Authors
Charles Sherwood Robinson, Fitzhugh T. Lee, R.W. Moore, R. D. Carroll, J. H. Scott, J.D. Post, C. S. Robinson, R.A. Bohman

Pacific geomagnetic secular variation

A smooth field over the central Pacific for a million years indicates a nonuniform lower mantle of the earth.
Authors
Richard R. Doell, A. Cox

Geomagnetic polarity epochs: age and duration of the olduvai normal polarity event

New data show that the Olduvai normal geomagnetic polarity event is represented in Olduvai Gorge, Tanzania, by rocks covering a time span of roughly from 0.1 to 0.2 my and is no older than 2.0 my. Hence the long normal polarity event of this age that is seen in deep-sea sediment cores and in magnetic profiles over oceanic ridges should be called the Olduvai event. The lava from which the Gilsàeven
Authors
C. S. Grommé, R. L. Hay

A computer program to trace seismic ray distribution in complex two-dimensional geological models

A computer program has been developed to trace seismic rays and their amplitudes and energies through complex two-dimensional geological models, for which boundaries between elastic units are defined by a series of digitized X-, Y-coordinate values. Input data for the program includes problem identification, control parameters, model coordinates and elastic parameter for the elastic units. The pro
Authors
Nazieh K. Yacoub, James H. Scott

Map showing relative amounts of landslides in California

No abstract available.
Authors
Dorothy H. Radbruch, Kenneth C. Crowther