Barber County Sec. 4, T. 32 S., R. 14 W

Near type locality of Dog Creek shale in the S 1/2 Measured By Ada Swineford
	Unit No. Description Thickness   Whitehorse Sandstone   30 Sandstone, very fine-grained, friable, cross-bedded, red with large irregular white spots; contains a few thin (5 cm) calcareous sandstone lentils. 15 ft. 29 Sandstone, hard, calcareous, red; contains sand balls as much as 2.5 mm diameter 3.5 ft.   Dog Creek Shale   28 Siltstone, dolomitic and calcareous, white to red; lenticular 0.2 ft. 27 Clay shale, silty, dolomitic, blocky, brownish-red 1.8 ft. 26 Siltstone, dolomitic, white (5Y8/1) with discontinuous red streaks; microscope shows large chlorite flakes 0.3 ft. 25 Clay shale, silty, brownish-red 1.3 ft. 24 Siltstone, argillaceous, calcareous, thin-bedded, red mottled light gray; and 11-mm layer near base contains salt casts up to 9 mm in diameter on lower side 1.0 ft. 23 Clay shale, silty, blocky, dark red 1.4 ft. 22 Siltstone, hard calcareous, light red with white and brownish-red spots (2 mm diameter) 3.5 ft. 21 Siltstone, slabby, white; contains thin greenish-gray silty shale seams 1.0 ft. 20 Clay shale, massive, reddish-brown 4.1 ft. 19 Siltstone, greenish-gray mottled light brown 0.4 ft. 18 Clay shale, blocky, reddish-brown (2.5YR5/4) 6.5 ft. 17 Limestone, vesicular, hard, sugary, white to red; contains many specks of black to dark-brown organic matter 0.2 ft. 16 Clay shale, blocky, brownish-red 2.4 ft. 15 Siltstone, massive, white mottled light brown 2.2 ft. 14 Partly covered, chiefly brownish-red blocky silty clay shale with a few thin gray streaks   13 Siltstone, slightly argillaceous, slabby, white 0.2 ft. 12 Clay shale, blocky, brownish-red 0.8 ft. 11 Siltstone, dolomitic, hard, uneven, light gray 0.1 ft. 10 Clay shale, silty, blocky, brownish red 1.9 ft. 9 Siltstone, calcareous, white with minute spots (1 mm) stained brown to black by organic matter 0.2 ft. 8 Clay shale, blocky, dark red 0.6 ft. 7 Siltstone, very calcareous, white (10YR8/1) with minute spots (1 mm); stained dark-brown by organic matter 0.8 ft. 6 Clay shale, blocky, brownish-red slightly mottled light red 0.9 ft. 5 Clay shale, greenish-gray; surfaces uneven 0.3 ft. 4 Clay shale, blocky, dark red 2.4 ft. 3 Clay shale, greenish-gray mottled 0.2 ft. 2 Clay shale, silty, blocky, dark red 0.8 ft. 1 Covered 5.3 ft.
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