wc f*64-| SOIL, CLAY, PEBBLES ee. 
Aina SOIL, CLAY, PEBBLES, SAND 
LOOSELY STRATIFIED 
CONGLOMERATES SANOS 
BASALT, ANDESYTE. 
RY OLYTE LAVA, 
CONCLOMERATES, SANDSTONES 
SHALES EF CLAYS Some of 
Yolcarite cletritius 
Others of | 
Qranittie clelritus | 
EOCENE STIOCENE PLIOCENE 
CLA s 
WESTERN COME BEOs 
SANOSTOAONELS 
DRAB, SHALES, CLAYS 
LIMELESTONES 
DARK SHALES | 
CONCLOMERATES SANDSTONE 
VERIEGATLEP CLAYS 
REP MARL SANOSTONES 
LIMIESTONE | 
THIN LIMESTONE 
THICK REP COWGLOUMERATES 
SANDSTONE | 
GYPSIFEROUS-SHALES | 
CRETACEOUS 
SiC 
MESOZOIC 
TRIA-\ JURA; 
SSI1C 
REDDISH CONGLOMERATES: | 
EASTERN COAL BEOS | 
SHALES SANDSTONES 
CRIT ANO SHALES ; 
BLUE LIMESTONE | 
zs 
is: 
REDOISH SANDSTONES 
LIMESTONE 
-(AN 
eo 
cot ia a Cn “Ca 
© fv 
PALEOZOIC 
DRAB PALE LIMES TONE 
DOLOMITE ‘ 
SLATES 
- QUARTZITES 
eK ONES QVARTZITE CONGLOMERATE 
GM EISS SCHISTS SLATES MARBLE 
cama] SILURIAN POSS CARB ONIFEROUS 
IAN 
GRANITE GNE/SS. 
SCHIST SYENY TE 
ARCHSAEAN 
ARCH/EAN 
WESTERN GEOLOGICAL SECTION. 
(After Prof. Lakes in part.) 
Showing the General Order of Formation as they Cccur 
on the Pacific Slope and Rocky Mountain Regions. 
