POTASH SALTS AND OTHER SALINES IN THE GREAT BASIN REGION. 57 



Feet. 



Rapid alternations of sand and brownish clay 264-275 



Tough clay ...--..... 275-285 



Sand with coarse and fine gravel, including pebbles J inch in diameter 



(artesian water) 285-290 



Very fine brownish sand 290-305 



Tough sticky clay 305-336 



Rapid alternations of clay and quicksand, the latter containing a little 



fine gravel (artesian water) 336-340 



Light-colored clay 340-350 



Quicksand, probably with occasional thin layers of clay 350-375 



Tough gray clay 375-390 



Quicksand (small astesian flow) 390-391 



Tough gray clay 391-418 



Quicksand (small artesian flow) 418-419 



Brown clay 419^29 



Sand (small artesian flow) 429-430 



Hard brown clay with occasional very thin sand streaks 430-445 



Gray clay 445-459 



Very soft yellowish clay 459-461 



Quicksand (artesian water) 461-462 



White sticky clay 462-463 



Blue-green clay 463-470 



Very fine quicksand (artesian water) 470-471 



Lead-colored clay 471-478 



Very fine sand 478-479 



Blue-green clay 479-480 



White clay 480-490 



Blue-green clay with occasional thin sand streaks 490-493 



Gray clay 493-500 



Blue-green clay, with occasional thin streaks of coarse sand 500-504 



White clay, fragments showing jointed structure 504-511 



Tough, blue green clay 511-519 



Quicksand (artesian water smelling of sulphuretted hydrogen) 519-520 



Gray clay. 520-523 



Gray clay with occasional thin strata of sand (artesian waters in all sands. 



Waters smell of sulphuretted hydrogen) 523-529 



Gray clay 529-533 



Very fine quicksand (artesian water smelling of sulphuretted hydrogen) . 533-534 



Blue-green clay 534-539 



Quicksand with some rather coarse gravel (strong artesian flow. Water 



carries no sulphuretted hydrogen) 539-541 



Sticky yellowish clay 541-549 



Tough white clay 549-554 



Blue-green clay 554-556 



Very tough white clay 556-560 



Quicksand 560-561 



Blue-green clay 561-583 



White clay 583-586 



Quicksand (small artesian flow) 586-587 



Clay 587-596 



Alternations of clay and black sand (small artesian flows in sands, espe- 

 cially at 605 feet) 596-609 



Tough white clay 609-620 



Gray clay 620-637 



Sand 637-638 



Very sticky clay 638-655 



Light-colored greenish clay 655-657 



Very tough white clay 657-676 



Quicksand (small artesian flow) 676-677 



Rapid alternations of clay and sand (very little water) 677-680 



'V^Tiite clay 680-691 



Rapid alternations of clay and sand 691-700 



Brownish clay 700-719 



Sand (very small artesian flow) 719-720 



Brownish clay 720-738 



Rapid alternations of quicksand and clay, the former carrying a little 



coarse gravel (small artesian flows) 738-746 



