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Willman, H. B., Elwood Atherton, T. C. Buschbach, Charles Collinson, John C. Frye, M. E. Hopkins, Jerry A. Lineback, and Jack A. Simon, 1975, Handbook of Illinois Stratigraphy: Illinois State Geological Survey Bulletin 95, 261 p.
H. B. Willman and T. C. Buschbach
The Blodgett Member of the Oneota Dolomite (Buschbach, 1964, p. 45).
The Blodgett Member is named for the town of Blodgett, western Will County.
The type section of the Blodgett Member is located 3 miles northeast of Blodgett, western Will County, in a boring (NE NE SW 25, 34N-9E) and is represented by samples (sample set 6199) from 885-980 feet deep.
The Blodgett Member of the Oneota Dolomite is the upper, noncherty, or only slightly cherty, member.
The Blodgett is recognized in the northeastern quarter of the state, where it ranges from 90 to over 100 feet thick.
It is dolomite, sandy in part, very slightly glauconitic, light or pinkish gray, and medium to fine grained. Oolitic chert is present but not abundant. Thin green shale partings are widely spaced throughout the member.
place a <pre><br></pre>at the end of a line to get a line return BUSCHBACH, T. C., 1964, Cambrian and Ordovician strata of northeastern Illinois: Illinois State Geological Survey Report of Investigations 218, 90 p.
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