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Sediment Magnetic, Paleomagnetic, and Geochemical Data from Lacustrine Sediment in a Core from Grass Lake , Siskiyou County, California

U.S. Geological Survey Open-File Report 96-294
Version 1.0

Patti J. Best1, Richard L. Reynolds1, Joseph G. Rosenbaum1, John Drexler2, and David P. Adam3

1U.S. Geological Survey, Denver, Colorado 80225.
2University of Colorado, Boulder, Colorado
3U.S. Geological Survey, Menlo Park, California 94025.

1996

As part of the U.S. Geological Survey's Global Change and Climate History Program, sediment magnetic, paleomagnetic and geochemical results have been obtained from lacustrine sediments recovered in a 30- meter core taken by rotary drilling methods at Grass Lake, Siskiyou County, California. The data, presented in five tables here, have been analyzed and interpreted in terms of environmental change in the Grass Lake catchment over the past ca. 100,000 years for a Master's thesis by Best ( 1996). Volcanic activity in the catchment was identified as a factor that influenced the magnetic mineralogy and geochemical properties of the sediment. The magnetic and geochemical results will further be compared to detailed pollen analysis, currently undertaken by Katherine Hakala ( University of Pittsburgh) and Prof. Cathy Whitlock (University of Oregon), to test the possibility that variations in the magnetic mineralogy are related to paleoclimatic change and associated watershed processes. This report also describes the methods used to obtain the magnetic and geochemical results. The site, drilling procedure, and core lithology are described by Adam et al. (1994).

CONTENTS

of96-294.html - primary document
Metadata

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DISCLAIMERS

This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial standards or with the North American Stratigraphic code. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although all data and software released with this open file have been used by the USGS, no warranty, expressed or implied, is made by the USGS as to the accuracy of the data and related materials and (or) the functioning of the software.

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