RI-04 Interpretation of Lake Washington Magnetic Anomaly, Meeker County, Minnesota
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RI-04 Interpretation of Lake Washington Magnetic Anomaly, Meeker County, Minnesota
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1964
Publisher
Minnesota Geological Survey
Type
Report
Abstract
A magnetic anomaly centered at Lake Washington, in
southeastern Meeker County, has been outlined by a ground
magnetometer survey. The anomaly is arcuate in outline,
about 8.5 miles long and a maximum of 5 miles wide, and
has a maximum amplitude greater than 3,000 gammas. A
gravity traverse was made across the anomaly to aid in interpretation.
Combined magnetic and gravity data are interpreted to
indicate that the source is a basin-shaped body having a substantially
greater density than the adjacent rocks that lies at
a shallow depth. The lithology of the source is not known
because of a lack of subsurface data, but is inferred to be
either Precambrian iron-formation or mafic igneous rock.
The anomaly warrants further investigation.
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Previously Published Citation
Sims, P.K., Austin, G.S. and Ikola R.J., 1964, Interpretation of Lake Washington Magnetic Anomaly, Meeker County, Minnesota, Minnesota: Minnesota Geological Survey Report of Investigations 4, 13 p.
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Suggested citation
Sims, P.K.; Austin, G.S.; Ikola, Rodney J.. (1964). RI-04 Interpretation of Lake Washington Magnetic Anomaly, Meeker County, Minnesota. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/60188.
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