Historical:South Haven Member

From ILSTRAT
Jump to: navigation, search
Handbook of Illinois Stratigraphy
Series Bulletin 95
Author H. B. Willman, Elwood Atherton, T. C. Buschbach, Charles Collinson, John C. Frye, M. E. Hopkins, Jerry A. Lineback, Jack A. Simon
Date 1975
Link Web page
PDF PDF file
Store ISGS Store

Lithostratigraphy: Lake Michigan Formation >>South Haven Member
Chronostratigraphy: Cenozoic Erathem >>Quaternary System >>Holocene Series

Authors

John C. Frye and H. B. Willman

Name Origin

The South Haven Member of the Lake Michigan Formation (Lineback et al., 1970, p. 11) is named for South Haven, Ottawa County, Michigan.

Type Section

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).

Stratigraphic Position

It is the lowest member of the formation. The member rests on the Wedron Formation, Equality Formation, or bedrock.

Description

It consists of reddish gray clay, generally less than 3.5 feet thick, on the east side of the lake.

References

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.

ISGS Codes

Stratigraphic Code Geo Unit Designation
0210
--