Buelter Member
Lithostratigraphy: Knox Dolomite Megagroup >>Ironton Sandstone >>Buelter Member
Chronostratigraphy: Paleozoic Erathem >>Cambrian System >>Croixan Series >>Franconian Stage
Allostratigraphy: Sauk Sequence
Primary source
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.
Contributing author(s)
T. C. Buschbach
Name
Original description
The Buelter Member of the Ironton Sandstone (Buschbach, 1964, p. 36).
Derivation
Named for Buelter School, Kane County.
Other names
History/background
Type section
Type location
The type section of the Buelter Member is located 2 miles west of Buelter School, Kane County, and is at a depth of 1180-1230 feet in Batavia city well No. 3 (SE SW NE 22, 39N-8E) (sample set 6901).
Type author(s)
Type status
Reference section
Reference location
Reference author(s)
Reference status
Stratigraphic relationships
The Buelter Member is the basal member of the Ironton Sandstone.
Extent and thickness
It is widely present in northern Illinois, where it is 20-80 feet thick.
Lithology
It is dominantly medium-grained, moderately well sorted, rarely dolomitic sandstone. The contact with the underlying fine-grained, well sorted sandstone of the Galesville is generally sharp.
Core(s)
Photograph(s)
Contacts
Well log characteristics
Fossils
Age and correlation
Environments of deposition
Economic importance
Remarks
References
BUSCHBACH, T. C., 1964, Cambrian and Ordovician strata of northeastern Illinois: Illinois State Geological Survey Report of Investigations 218, 90 p.
ISGS Codes
| Stratigraphic Code | Geo Unit Designation |
|---|---|