Elemental and mineralogical analyses using geochemical logs from the Cajon Pass Scientific Drillhole, California, and their preliminary comparison with core analyses

Creators: Anderson, Roger N.; Dove, Roy E.; Broglia, Cristina; Silver, Leon T.; James, Eric W.; Chappell, B. W.

Abstract

Estimates of elemental and mineralogical abundances from geochemical logs are compared to preliminary chemical and modal analyses from cores in the Cajon Pass Scientific Drillhole. Accuracies of log-computed weight percent oxide and mineralogy determinations range from 10 to 30%.

Additional Information

© 1988 by the American Geophysical Union. Received March 11, 1988; accepted: May 4, 1988. We wish to thank Honor O'Malley, Colin Williams, and Philippe Pezard for helpful advice during the preparation of this paper. Elizabeth Pratson developed the silicate elemental weight percent transform. We especially thank Mark Zoback for conceiving of and carrying out the drilling of this magnificent scientific laboratory into the workings of the San Andreas Fault, and DOSECC and the National Science Foundation for supporting the effort.

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