Sediment Magnetic and Paleomagnetic Data from Buck Lake, Oregon

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Description 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 have been analyzed and interpreted in
Originators Best, Patti J.; Reynolds, Richard L.; Rosenbaum, Joseph G.; Drexler, John; and Adam, David. P.
Publication U.S. Geological Survey Open-File Report 96-294

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Overview of attributes

Grass Lake Sample Number:  A unique number assigned to a sample
regardless ot sample type
Sample box no.:  A unique sample number assigned to samples put
into plastic cubes for magnetic mineral studies.  The volume of
each cube is 3.2 cubic centimeters.
Vial no.:  A unique sample number assigned to sediment sample put
into vials.
Drive no.:  Identifies location in the core.  The core was divided
into drives numbered sequentially starting with 1 at the top.
Some drives have been further divided into slugs indicated by
letters, starting with A at the top of the drive.
Drive depth:  The depth in meters of the top of the drive from the
Depth interval of sample:  The depth range of the sample within
the drive.
Sample depth within drive (cm):  Midpoint of the depth interval in
Sample depth within drive (m):  Midpoint of depth interval in
Sample depth in core (m):  Sample depth within drive (m) plus
depth of drive from top of core.
Sample density (kg/m3):  Density of sample calculated from the
mass of the dried box samples used in magnetic mineral studies.
Declination:  Declination of the characteristic magnetization, clockwise from geographic north.
Inclination   The inclination of the characteristic magnetization.
NRM:  Natural Remanent Magnetization in Am2/kg.
Demag. Interval:  The demagnetization interval over which both
Declination and Inclination were calculated.
Number of Points used in linear fit:  Number of points used to
create best fit line.
Subjective quality:  A subjective grade (a is best, c the worst)
given to the orthogonal vector diagrams from which the best fit
line was calculated.
MSLF:  Low-frequency magnetic susceptibility in m3/kg.
FDMS:  Frequency-dependent magnetic susceptibility in percent.
ARM:  Anhysteretic remanent magnetization in Am2/kg.
IRM (1.2T):  Isothermal remanent magnetization from induction in a
1.2 tesla field at room temperature.  Expressed in Am2/kg.
IRM (-.3T):  Isothermal remanent magnetization from induction in
a -0.3 tesla field at room temperature. Expressed in Am2/kg.
HIRM:  Hard isothermal remanent magnetization:  HIRM is calculated
as: [IRM(1.2T)+IRM(-0.3T)]/2  and expressed in Am2/kg.
S:  (S Ratio) calculated as IRM(-0.3T)/IRM(1.2T).
Element concentration, Cr: Chromium-ppm
Element concentration, Cr:  Copper-ppm
Element concentration, Fe: Iron- Wt%
Element concentration, Mn: Manganese-ppm
Element concentration, Mo: Molybdenum-ppm
Element concentration, Nb: Niobium-ppm
Element concentration, Ni: Nickel-ppm
Element concentration, Rb: Rubidium-ppm
Element concentration, Sr: Strontium-ppm
Element concentration, Ti: Titanium-Wt %
Element concentration, V: Vanadium-ppm
Element concentration, Y: Yttrium-ppm
Element concentration, Zn: Zinc-ppm
Element concentration, Zr: Zirconium-ppm
Total Carbon:  Percent of carbon (both organic and inorganic) in
Carbonate Carbon:  Percent of inorganic carbon in sample.
Organic Carbon:  Percent of organic carbon in sample.  Calculated
as total carbon minus carbonate carbon.

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