This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1914 Excerpt: ... was struck in the Coal Measures, the Parma, and the Napoleon, the brine increasing in strength with depth. The record given below is representative of the character of the formations. In the No. 13 well of the Dow Chemical Co. red shale occurs at 1390 feet or above. (C. W. Cook, Pub. 15, Geol. Series 12, 1913.) GRATIOT COUNTY. Alma. At Alma, one of the deepest wells in central Michigan was drilled in 1895 for the Alma Sanitarium. It reached a total depth of 2865 feet and was bottomed in the Upper Traverse limestones where mineral water with a temperature of 98 F, was struck. A little gas also seems to have been found in the top of the Traverse. The drift was very thick, bed rock being struck at 500 feet. This is much deeper than at St. Louis and Mt. Pleasant. The Napoleon is about 375 feet higher than at Mt. Pleasant, thus indicating an abnormal dip of the formation from Alma to the north-northwest. Pleistocene: Clay and gravel with quicksand and water at 60 ft. and 3 ft. water-bearing gravel at 157 ft Sand and gravel Woodville?: Feldspathic sandstone (335-590 at St. Louis) Coal Measures: Pyritiferous black shale, coal horizon Blue shale White shale Pebbly sandstone Shale sometimes black, coal reported Parma sandstone: Pyritic sandstone, brine Grand Rapids: Blue and black sandy shales Blue and white gypsum Bituminous, dolomitic red or blue argillaceous limestones (cement rock) Upper Marshall or Napoleon: Clean white sandstone, brine Lower Marshall: Red sandy shale: Blue shale Red shales Coldwater: Blue shales Brownish fine grained grit, no water Black, shales Light yellowish fine sand Dark shale colored limestone or shale Dark blue shale Berea shale: Black shale Berea absent?: Antrim (Ohio shale): Blue shale Black shale Black shale with harder streaks (lim...