58 



BULLETIN 61, U. S. DEPARTMENT OF AGEICULTUEE. 



Feet. 



Very tough brownish clay 746-759 



Rapid alternations of sand with brownish clay (small artesian flows in 



the sands) 759-771 



Hard brownish clay 771-785 



Quicksand (artesian water) 785-786 



Clay. 786-790 



Sand (small artesian flow) 790-791 



Brownish clay 791-798 



Rapid alternations of sand and clay 798-805 



Hard brown clay 805-816 



Quicksand and gravel (artesian .water) 816-822 



Hard white clay 822-824 



Rapid alternations of brownish quicksands and clays. Some gravel 



I inch in diameter in the sands (very strong artesian flows in sands. 



Temperature of water, 22° C.) 824-846 



Brownish clay 846-850 



Sand and gravel 850-855 



Rapid alternations of sand and clay 855-858 



Very fine sand 858-862 



Rapid alternations of sand and brownish clay 862-865 



Gray clay 865-876 



Coarse gravel (artesian water) 876-878 



Very fine sand 878-882 



Rapid alternations of clay and sand 882-886 



Gray clay 886-889 



Fine quicksand (artesian water) 889-892 



Rapid alternations of sand and brownish clay 892-899 



Gray clay 899-908 



Sand and coarse gravel (very strong artesian flows) 908-910 



Very fine sand 910-922 



Sand and coarse gravel (small artesian flow) 922-924 



Light-gray clay... ." 924-934 



Fine sand : 934-941 



Gray clay 941-945 



Sand 945-947 



Yellow clay 947-953 



Gray clay 953-967 



Sand and gravel (small artesian flow) 967-969 



Brown clay wiLh occasional very thin streaks of sand 969-980 



Brown clay 980-1, 002 



Fine sand (dry) 1, 002-1, 003 



Hard brown clay 1, 003-1, 049 



Sand (dry) 1, 049-1, 050 



Brown clay : 1, 050-1, 078 



Quicksand (probably dry) _ 1, 078-1, 079 



Brown clay with occasional very thin streaks of sand 1, 079-1, 085 



Tough brown clay 1, 085-1, 131 



Very thin sand streak (dry) 1, 131 



Brown clay 1, 131-1, 140 



Sand cemented by calcium carbonate, believed to be lake, tufa 1, 140-1, 144 



Sticky gray clay 1, 144-1, 165 



Rapid alternations of clay and sand 1, 165-1, 175 



Lime-cemented sand. Probably lake tufa 1, 175-1, 190 



Reddish clay with occasional very thin sand streaks (dry) 1, 190-1, 204 



Fine sand, probably quick 1, 204 



The casing having stuck hopelessly in the cemented sand between 1,175 and 1,190, 

 it was impossible to carry the hole deeper. 



The bore does not show either beds of salines or brines. The material obtained 

 consists of muds, silts, clays, and quicksands. Artesian water was encountered at 

 many points. The nonpenetration of saline beds by a single bore hole is not srrprising 

 when one considers the area of the central depression. The fact that artesian flows 

 were encountered would argue that the bore was considerably without the central 

 mud area, or the area of lowest depression. The former lake in evaporating may have 

 separated into several parts, and thus we might have several saline beds of moderate 

 thickness in the central area. The general silting of the whole area would render it 



