USGS Geoscience Data Catalog
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Rosenbaum, Joseph G. , Reynolds, Richard L. , Fitzmaurice, Priscilla L. , Drexler, John, Whitney, Gene C. , and Adam, David. P. , 1995, Sediment Magnetic and Paleomagnetic Data from Buck Lake, Oregon: U.S. Geological Survey Open-File Report 95-673, U.S. Geological Survey, Denver Colorado.Online Links:
Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 0.05. Longitudes are given to the nearest 0.05. Latitude and longitude values are specified in Decimal degrees.
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This report documents the methods used to obtain paleomagnetic directions, magnetic properties, and ancillary data, and presents these data in tabular form.
Adam, D.P, 1993, Field core processing techniques used by U.S.G.S. 1991 drilling operations in the Upper Klamath basin, Oregon and California: U.S. Geological Survey Open-file Report No. 93-20: U.S. Geological Survey Open-File Report 93-20, U.S. Geological Survey, Menlo Park, CA.
Adam, D.P., Rieck, H.J., McGann, M.L., Schiller, K., and Sarna-Wojcicki, A.M., 1994, Lithologic description of sediment cores from Buck Lake, Klamath County, Oregon: U.S. Geological Survey Open-file Report No. 94-12, 48 p.: U.S. Geological Survey Open-File Report 94-12, U.S. Geological Survey, Menlo Park, California.
Rosenbaum, J.G, Reynolds, R.L., Fitzmaurice, P., Adam, D.P., Sarna-Wojcicki, A.M., and Kerwin, M.W., 1994, Covariance of magnetic and pollen records from Quaternary sediment, Buck Lake and Caledonia Marsh, southern Oregon: Proceedings of the VIIth International Symposium on the Observation of the Continental Crust Through Drilling..
Person who carried out this activity:
303-236-1304 (voice)
jrosenbaum@usgs.gov
Person who carried out this activity:
303-236-1304 (voice)
jrosenbaum@usgs.gov
Person who carried out this activity:
303-236-1304 (voice)
jrosenbaum@usgs.gov
Person who carried out this activity:
303-236-1304 (voice)
jrosenbaum@usgs.gov
Person who carried out this activity:
303-236-1304 (voice)
jrosenbaum@usgs.gov
Person who carried out this activity:
303-236-1304 (voice)
jrosenbaum@usgs.gov
Person who carried out this activity:
303-236-1304 (voice)
jrosenbaum@usgs.gov
Person who carried out this activity:
303-236-1304 (voice)
jrosenbaum@usgs.gov
Sampling:
Paleomagnetic samples were collected in the form of oriented cubes.
Orientation was maintained with respect to the core axis. Azimuthal
orientation was not maintained.
Material collected from around each paleomagnetic specimen was vialed. The
depth interval of material contained in each vial corresponds closely (but
not exactly) to the interval sampled by a paleomagnetic specimen.
Paleomagnetic directions:
Progressive demagnetization occured in at least five steps and many
specimens were demagnetized at additional levels.
Characteristic directions of magnetization were calculated by fitting lines
to demagnetization data which visually appear to define coherent components
when displayed on orthogonal vector diagrams.
Hysteresis properties:
For each hysteresis loop generated, high field (or paramagnetic) magnetic
susceptibility was determined by fitting lines to a portion of the data for
inductions above about 0.9T.
The horizontal coordinates of the Buck Lake core site were determined from the position of the site on the Lake of the Woods, Oregon 7.5 minute topographic quadrangle map. The accuracy of the measurements are estimated to be + or - 0.005 degrees latitude and + or - 0.005 degrees longitude.
The altitude of the core sight was determined from the Lake of the Woods, Oregon 7.5 minute topographic quadrangle map. The contour interval of the map is 5 feet. The accuracy of the measurement is estimated at + or - 5 feet.
132 samples, labeled "Vial" samples were collected for analysis of grain
size and elemental concentrations.
"Grain size percent > 3.2 microns" data were recorded for 21 samples.
Elemental abundance data were recorded for 110 samples
Carbon Abundance data were determined for 51 samples.
Six tables record information from the various studies performed on core
material. All studies were not completed on all samples. Two different
sample entities were collected from core material, "Vials" and "Sample
boxes". "Vials" and "Sample boxes" were labeled as follows:
Paleomagnetic specimens, 3.2 cm3 in volume, were taken in plastic boxes.
Each paleomagnetic specimen was given a unique box number and the depth
interval (with respect to the top of the core segment) covered by each box
was recorded. Subsequently each specimen was assigned a second unique
number, the sample number. Core material removed from around each
paleomagnetic specimen was placed in one or more numbered vials. The
depth interval contained in each vial corresponds closely (but not
exactly) to the interval sampled by a paleomagnetic specimen. These vials
were later assigned sample numbers. Material in these vials was used to
determine grain size, and elemental concentrations.
"Depth in hole (meters)" is consistantly used throughout the data tables.
Other entities are used as follows.
+-------------------+-----------------------------------------------------+ | | Table Table Table Table Table Table | | | 1 2 3 4 5 6 | +-------------------+-----------------------------------------------------+ | Sample number | X | | | | | Sample box number |X some X X X X X | | | | | Vial number |X some X X | +-------------------+-----------------------------------------------------+
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- Access_Constraints: none
- Use_Constraints: none
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Open-File Report 95-673
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.
The full data set is published in paper form.
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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.
(703) 648-5285 (voice)
(703) 648-6560 (FAX)
kfoley@usgs.gov