140 



!. REPORT. 



1^219 



(Sec. 30.) 

 OF TERTIARY, PROM YOSTS LIME-KILE TO BAG 

 SUMMIT, RANKIN COUNTY. 





CHARACTER OP STRATA. 



e. r 



pq 



|2 i 



3*»fe 



§1^ 



«S> Co 



1 3 



: i 



3*£ 



IF* 



(a I co 



as* 



.« 



Yellow surface loam. 



NO 







8 Greenish yellow clay, wiih calcareous ■ ions, and 



lumps of ()i ' mestone. 



12 



Yellow or deep orange-colored clay, with massy cl< a 



contains crystals of gypsum. Portions of it black with 11 

 carbonaceous matter. 



, i/ Cream-colored or white, tallowy mineral, with crystals i 

 psum. 



Yellow and blue clay interstratified; blue lower down, and i 

 massy. Contains crystals and flakes of gypsum, eiflorescei a 

 of salts on the surface. 



Lignito-gypseous, clay and earthy Lignite, in cut at Brandon. 8 



Grayish-blue clays, massy or laminated, with crystals, 

 sheets and rosettes of gypsum, and crusts of Yellow Iron 7 

 Ore (^ 221) on cleavage planes. 



Gray gypseous clays. 



Yellowish calcareous sands with Ostrea Vicksburgensis, 

 IPecten Poulsoni, and casts ; in its upper portion, rounded, 

 30?,dark-colored concretions (" nigger-heads") with well 

 preserved Vicksburg fossils— Area Mississippiensis, Ca 

 sum, etc. 



White marls, more or less indurate at times, alternating 

 with hard ledges abounding in Pecten Poulsoni and Orbi- a 

 toides Mantelli, which impart to the rock a laminated; j 

 structure. 



Ledges of solid blue limestone. Pecten Poulsoni, Orbi-\ 

 (aides, Fulgoraria Miss., Panopaea oblongata. 



10 



White marls, more or less indurate, with hard ledges] 

 Pecten Poulsoni, Orbitoides Mantelli. Seftizaster. 



Gray and yellowish laminated clays, interstratified with! , 

 sand ; non-effervescent, non-fossiliferous. Lowest visible. ' I 



219. On the ridges S. of Richland Creek, near Brandon, and on the high 

 dividing ridges between the waters of Pearl and Strong Rivers in S. Rankin 

 generally, as well as in S. Hinds (e. g., between Auburn and Raymond), we find 

 the white friable sandstones of the Grand Gulf Group, underlaid by, and 



