GEOLOGIC CORRELATION 
255 
SEQUENCE OF BOOK FORMATIONS IN KANSAS. 
Eras 
Periods 
SUB-P. 
Series 
Terranes 
Thick 
Rocks 
CENOZOIC 
QUATERNARIC- 
Rate 
25 
Alluvium 
Interval 
Unconformity 
Mid 
Pleistocene 
Wisconsin 
King-sdown „ 
Pearlette 
Meade 
100 
150 
25 
40 
Loess 
Adobes 
Volcanic ash 
Gravels 
Interval 
Unconformity 
Kansas 
Alton 
50 
25 
Tills 
Clays 
Interval 
Unconformity 
EARLY— 
10 
Clays 
TERTIARIC 
Late 
Interval 
Unconformity 
Texhoman 
Blanco 
Goodnight — 
100 
150 
Sands 
Clays 
Interval 
Unconformity 
Mid 
Loupian 
Ogalalla 
Arikaree 
300 
600 
Sands 
Clays 
Early— 
Not exposed 
MESOZOIC 
CRETACIC 
LiATB 
Interval 
Unconformity 
Pierre 
400 
Shales 
Coloradan 
Niobrara 
Hays 
Victoria 
Carlile • 
Greenhorn — 
Graneros 
300 
50 
150 
100 
100 
150 
Chalks 
Limestones 
Shales 
Shales 
Limestones 
Shales 
Dakotan 
Cawker 
Brookville 
Pete 
50 
150 
50 
Shales 
Sandstones 
Shales 
Interval 
Unconformity 
EARLY— 
Comanchan 
Mentor 
100 
Sandstones 
Interval 
Unconformity 
Kiowa 
Cheyenne 
150 
60 
Shales 
Sandstones 
Interval 
Unconformity 
JURASSIC 
LiAtb 
Morrisonian 
Chaquaqua __ 
Travester 
75 
50 
Shales 
Shales 
Interval 
Unconformity 
TRIASSIC 
Early— 
Dockuman- __ 
Trujillo 
Tecovas 
75 
50 
Shales 
Shales 
Interval 
Unconformity 
