Skip to main content
U.S. flag

An official website of the United States government

Chemical characterization of San Andreas Fault Observatory at Depth (SAFOD) Phase 3 core

April 27, 2023

We present new X-ray fluorescence compositions of 27 core samples from Phase 3, Hole G of the San Andreas Fault Observatory at Depth, nearly doubling the published dataset for the core. The new analyses consist of major and trace element compositions and the first published data for rare earth elements from Hole G. Whole-rock compositions were obtained to further the analysis of active geochemical processes within the creeping section of the San Andreas Fault in central California. In this report, we plot the new data along with previously published analyses to illustrate some of the compositional features of the Hole G core and to relate them to the core mineralogy.

Citation Information

Publication Year 2023
Title Chemical characterization of San Andreas Fault Observatory at Depth (SAFOD) Phase 3 core
DOI 10.3133/ofr20231019
Authors Diane E. Moore, Kelly K. Bradbury
Publication Type Report
Publication Subtype USGS Numbered Series
Series Title Open-File Report
Series Number 2023-1019
Index ID ofr20231019
Record Source USGS Publications Warehouse
USGS Organization Earthquake Science Center

Related Content