USGS/Cascades Volcano Observatory, Vancouver, Washington
REPORT:
Bathymetric, Geophysical and Geologic Sample Data from Medicine Lake, Siskiyou County, Northern California
--
Jonathan R. Childs, Jacob B. Lowenstern, R. Lawrence Phillips,
Patrick Hart, James J. Rytuba, John A. Barron, Scott W. Starratt,
and Sarah Spaulding, 2000,
Bathymetric, Geophysical and Geologic Sample Data from Medicine Lake,
Siskiyou County, Northern California:
U.S. Geological Survey Open-File Report 00-043
Introduction
In September, 1999, the U.S. Geological Survey acquired high-resolution bathymetry, seismic
reflection profiles, and geologic sample data from Medicine Lake, a high altitude (2,036
meters) lake located within the summit caldera/basin at Medicine Lake volcano (MLV), a dormant
Quaternary shield volcano located in the Cascade Range, 50 kilometers northeast of Mount
Shasta. It last erupted less than 1000 years ago. The purpose of this work was to assess
whether sediments in the lake might provide a high-resolution record of the climate, volcanic
and geochemical (particularly mercury) history of the region. We are still working with our
data to assess whether the sediments are appropriate for further study. This report provides a
summary of what we have learned to date.
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04/06/00, Lyn Topinka