USGS Open-File Report 2013–1282: Gravity, Aeromagnetic and Rock-property Data of the Central California Coast Ranges

Gravity, Aeromagnetic and Rock-property Data of the Central California Coast Ranges

By V.E. Langenheim

Abstract

Gravity, aeromagnetic, and rock-property data were collected to support geologic-mapping, water-resource, and seismic-hazard studies for the central California Coast Ranges. These data are combined with existing data to provide gravity, aeromagnetic, and physical-property datasets for this region. The gravity dataset consists of approximately 18,000 measurements. The aeromagnetic dataset consists of total-field anomaly values from several detailed surveys that have been merged and gridded at an interval of 200 m. The physical property dataset consists of approximately 800 density measurements and 1,100 magnetic-susceptibility measurements from rock samples, in addition to previously published borehole gravity surveys from Santa Maria Basin, density logs from Salinas Valley, and intensities of natural remanent magnetization.

First posted February 18, 2014

Report PDF (1.2 MB)

For additional information, contact:
Contact Information, Geology, Minerals, Energy, & Geophysics Science Center—Menlo Park, California
U.S. Geological Survey
345 Middlefield Road
Menlo Park, CA 94025-3591
http://geomaps.wr.usgs.gov/

Part or all of this report is presented in Portable Document Format (PDF). For best results viewing and printing PDF documents, it is recommended that you download the documents to your computer and open them with Adobe Reader. PDF documents opened from your browser may not display or print as intended. Download the latest version of Adobe Reader, free of charge.

Suggested citation:

Langenheim, V.E., 2014, Gravity, aeromagnetic and rock-property data of the central California coast ranges: U.S. Geological Survey Open-File Report 2013-1282, 12 p., http://dx.doi.org/10.3133/ofr20131282.

ISSN 2331-1258 (online)

Contents

Abstract

Introduction

Acknowledgments

Gravity Data Sources, Reductions, and Accuracies

Aeromagnetic Data

Physical-property Data

Conclusions

References