686 R. W. RICHARDS AND G. R. MANSFIELD 
Thickness 
Description Ft. 
Shale, brown weathers orayss:cs'. 47s ne er fo) 
Phosphate rock, dark gray, coarsely oolitic, soft........ ° 
Shale browser hope cts Eh a Woe et aaa oe pe ea et arn a ° 
Phosphate rock, dark gray, coarsely oolitic, with several 
shaly partings less than § inch thick; phosphoric acid 
ZO. DEL GEM B circ eesa tase ch ttay or arale eee mee or eae eee a ea fe) 
Limestone: lenticularie: o.5 90g Noe ee ees Gene ° 
Phosphate rock, dark brown, medium to finely oolitic; 
phosphorictacid: 261) percent rn: ser. eee 
Shale: black in-pantsinely, Oolitic essence yee eee 
Shale; browns partly weathereditorclay.. «ne-yo oe oe 
Shale, black, phosphatic, in part finely oolitic................ 
Shale, brown, with concretions up to 2 inches in diameter...... 
Shale, rusty brown to yellow, with a few concretions up to 1 inch 
Oo DHWO 
MTN CHUA TIVE CET eco ee pate cea ee ea ee ge Osan te I 
Shale, dark brown, with thin pebbly or concretionary bed at top, 
phosphaticiniplacess eyes cycle een nee ee 16 
Pebbly or concretionary bed, concretions up to 2 inches in 
GATE LET casein a ak aches cies Cerne ene sete ee ee ° 
Shales TO wns. ee ae ees sy eR elcan in cae ap ieowh, cease eter reir I 
Shalewblack'to dark) brownie sak mins caer ter uname ° 
Pebbly or concretionary layer, phosphatic............. fo) 
Shalexblack-ishishtly-ooliticzt ya eee eee ° 
Shale, with pebbles or concretions up to 2 inches in, diameter. .. fo) 
Shalebrown, weathers to/ochreousisoll 4: se) se ee 3 
Pebbly or concretionary bed...... PR PC SH ACR Nee) 8 fo) 
Shale, brown, weathers to ochreous soil..........-...5..:.... 2 
Pebbly or concretionary bed, phosphatic............... I 
Shale sbrownrsphosphaticy; Wi Ws... emeeee tee ae 2 
Shale ablackwithin= bedded |i. yp evar tier. et eat ae aera me ° 
Clay so chreouUste sect red tess ccc air oh! nae: Wana i Sa oe fe) 
Shhiatlet rowan ir cance cane oie teste, cite cy aay ee salva ccleaner nen re On I 
Shale, black to light brown, slightly phosphatic............... I 
Limestone, broken, and intermixed with shale................ 6 
Shale, broken, and weathered, only slightly phosphatic........ 21 
Shale, black, phosphatic, finely oolitic, estimated to contain 
phosphoricracid! 2ofper cent a. a ee eer eee ee 5 
Shale, brown, weathers yellow, concretionary................. I 
Limestone, purplish-drab lenticular 7 see ect oe ° 
Shales dark sbroken:sand) weathered: gem anes ternin yates 15 
3 
9 
H 
Phosphate rock, broken, weathered drab.......... eee 
Soil black; fetid ice asses teasines-< ach ee ies Roars mere 
In. 
9 
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3 
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