144 



REPORT OF THE 



At 



Depth 



of 



—i o 



si 



3 g ■ 



E" 1 o 



DESCRIPTION OF ROCKS, &c. 



Ft. 

 

 10 

 128 



Ft. 



10 



118 



2 



Ft. 

 130 



•' Common Alluvion." 



•' Plaster Clay." [" Marly."— Houghton.] 



: - Cummoii beach sand, with coarse gravel." 



130 



120 



11 Compact limestone." [Probably Hclderbcrg and Onondagasalt grOnp 



together.— T"/. J 

 •' Gypsum and Salt." 



250 



2 



252 

 .260 



5 



'' Compact Lime." fProbably Khgara limestone. — W.] 



II.— State Salt Well, Grand Rapids. Sec. 3, T. 6 N., 12 W. 

 Condensed from the records kept under Dr. Houghton's direc- 

 tions. Bored in 1841-2. 



At 



J, J4 



1 3 B 





Depth 

 of 



tZ 'J- 



M 





DESCRIPTION OF ROCKS, &c. 



Ft. 



Ft. 



Ft, 





C 



40 



40 



Alluvial, kc, 5-6 feet clay, thin sand and gravel. 



40 



7 



"Clay;" Gypsum 6}< feet. 



47 



1 





• Very hard rock, supposed to be hornstone." 



48 



13 





•' Clay" and " slate" alternately, with 1-3 in. "hard rock," several 







21 



times recurring in the lower 4 feet. , ; 

 ock,V " 1 ■.rd." At 63 feet, a spring, water brackish, cavity 3 



61 



109 









in.; sandrock continuing; softer, with numerous cavities; brine 









strengthening; rock harder at 104 ft. 



170 



9 





: ' Mixture of clay and sand — quite hard." 



179 



5 



123 



•' Clay slate." 



184 



101 



Hard san1rcck,l9 ft.; cavities, water very salt; "soft sandrock" at 









201-244 ft. ; very hard at 245-246; soft, 247-27S. At 265 feet, brine 









overflowing profusely, and increasing to 284 feet. 



285 



2 





" Blue clay." 



287 



20 





■'Common sandrock." 



307 



24 





■' Ash colored clay and sandrock," " about equal parts." 



331 



12 



159 

 130 



" Sandrock, quite hard." 



343 



130 



"Clayrock." Water doubled at 361, and somewhat stronger." 5 " From 









417-421 very soft like blue clay , then a few black gravel stones, than 









shale. 



473 







■ l Clayrock." Continuing. 



