Accession Number:

AD0420425

Title:

THE RELATIONSHIP BETWEEN WATERSHED GEOLOGY AND BEACH RADIOACTIVITY,

Descriptive Note:

Corporate Author:

CALIFORNIA UNIV BERKELEY WAVE RESEARCH LAB

Personal Author(s):

Report Date:

1963-08-01

Pagination or Media Count:

32.0

Abstract:

A correlation between the watershed geology of the Ben Lomond Mountain area, north of Santa Cruz, California, and the radioactivity of the beaches receiving sediment from the watershed has been attempted. The radioactivity of stream and littoral sediments have been presented in terms of concentration of thorium as determined by gamma-ray spectroscopy. The results have not shed any light on the watershed geology-beach radioactivity relationship as the area of study failed to produce a radiometric anomaly of sufficient magnitude to be reflected in the littoral sediment. The results do show considerable variation in the thorium content of the stream sediment but the variation is not consistent with any known geological variation. It has been shown that the quartz diorite pluton at Ben Lomond Mountain carries only minor amounts of thorium and could not be responsible for a radiometric anomaly in littoral materials. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE