398 Coal Measures of Central Iowa — Keijes. 
Feet. Ins. 
7. Blue, impure nodular limestone weathering brown 8 
6. Drab shaly clay 5 
5. Blue limestone similar to No. 7 1 
4. Light colored shale 5 
8. Bituminous shale 3 
2. Impure shaly coal 3 
1. Variegated clays 15 
Section ii. Railway Gutting S. W. S. W. 2, 78 iV. 2i W. 
Feet. Ins> 
6. Soil and drift 1 
5. Yellowish micaceous, sandstone, somewhat concretionary in 
places and often containing much pyrite 25 
4. Yellow and drab clays 1 g 
3. Impure shaly coal 2 6 
2. Yellow and drab clays somewhat sandy in places; upper 12 
inches containing rootlets of Stigmaria 4 6 
1. Impure shaly coal (exposed) 2 
Section hi. Excavation at Tile Works, N. E. N. W. 3, 7R N. 24 W. 
Feet. Ins. 
11. Soil 6 
10. Yellowish-brown drift clay 4 
9. Variegated shales and clays 15 
8. Impure shaly coal with layers of bituminous shale 4 
7. Impure argillaceous sandstone with rootlets of Stigmaria in 
upper portion 2 6- 
6. Shaly coal 1 
5. Dai k drab shales and clays 3 
4. Dark, nearly black, clayey shales containing crystals of sele- 
nite in abundance 7 
3. Yellow sand and clay & 
2. Hard black fissile shale 1 6 
1. Hard drab clay, exposed G 
Section iv. Boad Cutting, on river bank, M. E. If. E. 34, 79 If., 24 W. 
Feet. Ins. 
7. Soil 6 
6. Sandy, brownish-yellow drift clay 7 
5. Loess, containing Helicina occulta, Succinea ohliqua, 8. avara, 
etc., typical loess below mingled with drift above 6 
4. Straticulate sand, clay, with gravel and boulders up to 1 foot 
in diameter exposed 14 
3. Hidden 11 
2. Impure shaly coal 2 ft 
1. Irregularly thin bedded sandstone with numerous clay part- 
ings exposed 5 
Section v. Giant Coal Mine, 8. W. 8. E. 36, 7.9 N. 24 W. 
Feet. Ins 
6. Drift clay and carboniferous clays and shales 56 
5. Coal (No. 1) 4 ft 
