CLAYS OF CRETACEOUS FORMATION. 179 



West of Florida Grove at the sand pits of the Standard Fire- 

 proofing Company (47) there are, belonging to this bed : 



Section at Standard Fireproofing Company's Sand Pits. 



a. Cross-bedded white and yellow quartz sand, 30 ft. 



b. "Feldspar" lenses up to 12 



c. White mica sand, 2 



Total, 44 " 



d. Black clays and sands (Woodbridge beds). 



South of the Raritan river "kaolin" occurs immediately beneath 

 the South Amboy fire clay in the banks of Sayre & Fisher (273), 

 Whitehead Brothers (75), (69), J. R. Crossman (65), and 

 some of the banks on the old Kearney tract. In other pits coarse 

 quartz sand or a white micaceous sand is found beneath the fire 

 clay. 



In the cut on the Raritan River railroad near Van Deventer 

 station, the following section occurs at the horizon of this mem- 

 ber of the Raritan : 



Section near Van Deventer Station, Raritan River R. R. 



a. White sandy clay, 1-2 ft. 



b. White quartz sand, 10 " 



c. White micaceous clay, : . . . 2 " 



d. "Kaolin," 3 " 



e. Micaceous sand (lignite) , 3 " 



f. White micaceous sand, 12 " 



Total, 32 " 



g. Woodbridge clays. 



In this exposure the Amboy fire clay is not present, unless repre- 

 sented by the white, sandy clay (a), which is overlain by quartz 

 sand. The latter apparently extends to the top of the hill, and 

 belongs to the sand bed overlying the fire clay. 



Xear Crossman's dock, north of Burt Creek, in a semi-isolated 

 hill, the following beds occur : 



