94 INDEX. 



Nevada: Page. 



Alum deposits 35 



Alimlte occurrence 35-36, 67 



Borax deposits 33, 34, 42-43, 54 



Climatic records, precipitation, etc., tables 71-73 



Extinct craters found 19-20 



Great Basin region, geochemical conditions 1-14 



Gypsum deposits t 65, 66 



Hardpans, occurrence and analysis 23 



Hot Springs, water analysis 18, 19, 35 



Nitrate deposits, location 32 



Salt deposits 7,17,40-41,42,43,53,54,56 



Soils, salines, nature, etc 25, 27, 78 



Waters, analyses 24, 77, 78 



Waters, surface and underground, analyses 24,77,78 



Nitrates, occurrence in Great Basin 32-33, 66 



Ogden River, note 29 



Oregon: 



Borates, deposits 33 



Climatic records, precipitation, etc., tables 71-73 



Great Basin region, geochemical conditions 1-14 



Lake basin descriptive notes 1, 4, 30, 31, 74 



Lake region, hot springs, water analysis 19 



Lakes, notes 9, 32 



Soils, saline, nature of 25, 79 



Southern, artesian area 13 



Osobb. (See Dixie Valley). 



Owens Lake: 



Descriptive notes 9, 29, 30, 32, 33, 49, 50, 51, 53, 65 



Salts content 64 



Owens River, descriptive notes 8, 28, 29, 30, 31, 32, 81 



Owens Valley Basin, descriptive notes 1, 3, 4, 7, 10, 11, 12, 19, 30, 31 



Panamint Basin, descriptive notes 1 , 7, 39 



Paradise Valley, descriptive notes 1,33 



Play a deposits: 



Description ! 36-37, 67 



Borax, description .■ 33 



Playas, mud, and marshes, description, location, etc 39-60, 67 



Potash: 



Analvses, natural brines, Death" Valley, Cal 47 



Bore explorations ..i , . . .- ;...'. : 2, 13, 18, 46, 54, 56-58, 63, 64 



Discoverv, Columbus Marsh 54, 64 



Drill, Railroad Valley, Nev., log 56-58 



Investigations, cooperative work 2,3 



Studies, Carson sink bore 2, 18, 63, 64 



Potash-bearing minerals, occurrence. Great Basin 65 



Potassium: 



Annual accumulation of Great Basin 32 



Content of deposits. Great Basin, notes, etc 44, 45, 49, 51, 53, 54, 59, 64, 66, 68 



Ratio to sodium, in waters and soils, Great Basin 24, 25, 27 



Precipitation, Great Basin region, notes and tables 3, 9, 10, 71, 72 



Pyramid Basin, descriptive notes 3, 10 



Pyramid Lake, descriptive notes 9, 29, 30, 53, 60, 61, 62, 63 



Quaternary lakes list, description, etc 7-8, 67 



Quinn River, descriptive notes 4, 8, 9, 29 



Railroad Valley, location, formation, artesian waters, borings, etc 8, 13, 39, 56-.59, 64, 83-85 



Rainfall: 



Annual, Great Basin region, notes and tables 3,9,10,71,72 



Distribution and run-ofi. Great Basin region 9-10 



Rains, torrential, occurrence in Great Basin, and effects 3-4, 21 



Ransome, citat ions 65 



Reactions of solution in rock weathering 20-21 



Reade, T. Mellard, citation 31 



Reese River, descriptive notes '. 4, 8, 9, 29 



Reno, topography 4,5 



Rhodes Marsh, descriptive notes, analyses, etc 1, 33, 38, 39, 42-43 



River: 



Discharges, saline content 30-32, 81 



Waters, analyses, comparison with lake waters 27-30, 80 



Rivers draining into Great Basin region, descriptive notes 1, 4, 8, 9, 10, 27-30, 73-74, 75 



Rock weathering: 



Products, solubility 20-21, 66 



Zone, reactions 20-27 



Rocks: 



Formation, etc.. Great Basin region 4, 5, 6 



Great Basin region, extent, distribution, and character 13-14, 14-18, 65, 75, 76 



Igneous, composition of acid and basic, discussion and tables 14-15,76 



Igneous, decomposition, process and results 15-16 



Sedimentary, as source of salines, analyses, etc 17-18 



Rosamond Basin deposition, description 34 



Ross, W. H., citations 52 



Rowe, citation on gypsum beds. Great Basin 7 



Run-off, surface waters, (Jreat Basin area 8-10, 73-74 



Rush Creek, notes 29 



Russell: 



Citations on geology of Great Basin 0,13,15,18,61,65 



Monograph on Lake Lahonlan, citation 7 



