jPaci/ic Detail 
Granite and 
Metant orphic rocks. 
Volcanos. 
Devonian 
mm 
] Lower (arhonderoiit 
Coal Measures 
Comet Creek 
r.S.FA<’IJ''LC HAIIj HOAD EXPLORATION k SURVEY 
AVAR DEPARTMENT 
GEOTAHilCA l section 
FROM THE 
MISSISSIPPI HIVER to the PACIFIC OCEAN 
Along the route 
Near the Parallel of 35“ISortliLalllude 
1853 - 1854 . 
Prepared to accompany the preliminary Report 
By Mf Jules Maroon 
Oco'.ftgi.s-r of theE-xpi-dmou. 
explored by Lieut. A.W.WHIPPLE C orps oP TopLEng” 
fit/i .hr,lHnrn .(■ C?, Bn/lUfd. 
Jurassic 
Neocomian 
White Chalk 
Tertiary 
J Quaternary 
