Historical:South Haven Member
John C. Frye and H. B. Willman
The South Haven Member of the Lake Michigan Formation (Lineback et al., 1970, p. 11) is named for South Haven, Ottawa County, Michigan.
The type section is the interval from 219.3 cm to the base of core 143 (lat. 42°21.8' N, long. 78°10.8' W, at a water depth of 390 feet).
It is the lowest member of the formation. The member rests on the Wedron Formation, Equality Formation, or bedrock.
It consists of reddish gray clay, generally less than 3.5 feet thick, on the east side of the lake.
LINEBACK, J. A., N. J. AYER, and D. L. GROSS, 1970, Studies of Lake Michigan bottom sediments- No. 3. Stratigraphy of unconsolidated sediments in the southern part of Lake Michigan: Illinois State Geological Survey Environmental Geology Notes 35, 35 p.
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