...Fig. 1 —Map showing distribution of Kawkawlin Bentonite in Michigan basin and thickness of Kawkawlin-Bentonite-to-base-of-Traverse-Formation interval. Areas of dominant rock type in which Kawkawlin Bentonite is present are labeled. Black dots are control wells. Isopach contour interval is 100 ft. ...

...John B. Droste; Robert H. Shaver ABSTRACT We agree with Baltrusaitis that the thin bentonite bed that he has described as the Kawkawlin Bentonite in the Michigan basin and the Tioga Bentonite Bed that others have described in New York and in the Appalachian and Illinois basins represent one...

... to publication of “Middle Devonian Bentonite in Michigan Basin” ( Baltrusaitis, 1974 ) revealed geologic problems that create confusion in regard to possible correlation of Kawkawlin Bentonite to the Tioga Bentonite. These problems still exist. B. V. Sanford (personal commun., 1969) of the Geological...

... consideration of this possibihty is in order. Baltrusaitis (1974) called attention to the widespread presence of coarse biotite in the Michigan basin in the Kawkawlin bentonite, which he identifies as probably correlative with the Tioga. Baltrusaitis (1974 , p. 1330) stated “Biotite flakes...

... Permian sandstone 30 Bentonite 34 Bauxite, Georgia 58 Silica gel 23 Kaolin 12 “Glaucosil” (acid leached greensand) 45 Prehnite (zeolite) None Stilbite (zeolite) None Talc None Infusorial earth None Powdered pumice None Ferric oxide, pure None Aluminum oxide...