The following table classifies the formations according to order and 
age and indicates their salient features: 
GEOLOGICAL COLUMNAR SECTION FOR DAKOTA 
COUNTY, NEBR. 
———-. 
CENOZOIC 
MESOZOIC 
Z 5 
a1 a | o A, ai 2 
a} ae} 5] S| ForMa- COLUMNAR SECTION CHARACTER al a 
a | 2] 6 |e6| Tos oes 
ph] a | & ioe Fie. 5. <Q 
n n O lad ES 4 
2 Alluvium s 
5 inane 5 matte ) Sand, silt, loam and gravel 
a S itil aia Min | ' in valleys, talus on slopes. 0-100 
<q | ATTA Ure UNH eea 
Z 
ce |——|——_|— Loess Fine, sandy loam, of pale 
el |) brownish buff color. Contains 
= |) s many small calcareous concre- 5-90 
a1 tions. - 
=) S 
CP ~ 
S| wm 
a ) Clays, bowlders, gravel ana 9-20 
hivyAR SRO i sands. a 
rs Glacial Ssaece 
q { Fossiliferous slabby lime- 
= Green- { Stone with an admixture of 
=~ horn |clay andsomesand. Jnoc-| __ . 
s) 4 | eramus lubiatus present. 15-25 
Ste) E 
ea | Dark to bluish clay, grading 
Sy zz I | above into bluish shale and 
—+ | & |Graneros { below into yellowish shale. 
© | a | A few Inoceramus labiatus| . 
2 | present. 30-60 
M 
2 | 
n |e 
Sy oO) 
© | 4 
a ES (@x- 
oO fs | posed) 
st S| Coarse, friable sandstone light su 
eS to rusty brown color, inter- 15-80 
~ a stratified with beds of blue, (ene 
o|2 | a gray, and yellow clay and|‘®e™e 
le Dakota shale. Many leaf and plant] trated 
= oO remains present. by drill) 
a 350 
(= 
