Publications
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Two former faces of the moon Two former faces of the moon
Systematic geologic mapping of the lunar near side has resulted in the assignment of relative ages to most visible features. As a derivative of this work, geologic and artistic interpretations have been combined to produce reconstructions of the Moon's appearance at two significant points in its history. The reconstructions, although generalized, show the Moon (1) as it probably appeared...
Authors
D.E. Wilhelms, D.E. Davis
Estimated relative abundance of landslides in the San Francisco Bay region, California Estimated relative abundance of landslides in the San Francisco Bay region, California
No abstract available.
Authors
D. H. Radbruch-Hall, C. M. Wentworth
Preliminary photointerpretation and damage maps of landslide and other surficial deposits in northeastern San Jose, California Preliminary photointerpretation and damage maps of landslide and other surficial deposits in northeastern San Jose, California
No abstract available.
Authors
T. H. Nilsen, E. E. Brabb
Geomagnetic polarity epochs: age and duration of the olduvai normal polarity event 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
Authors
C. S. Grommé, R. L. Hay