Geochemistry and paleolimnology of the trona deposits and associated authigenic minerals of the Green River Formation of Wyoming

Abstract

Authigenic minerals found in the saline zone of the Wilkins Peak Member of the Green River Formation in Wyoming ___________________________ --________ --BlO Chemical analyses of rocks from the saline facies of the Wilkins Peak Member of the Green River Formation, Sweetwater County, Wyo___________________________ Calculated mineralogy of rocks from the saline facies of the Wilkins Peak Member of the Green River Formation, Sweetwater County, Wyo_______________________ Maximum areas, volumes, and tons of trona in 18 principal beds___________________ Comparison of Lake Victoria in Mrica with Gosiute Lake as it is inferred to have been, late in the Tipton stage______________________________________________ Average of several analyses of Lake Victoria water_______________________________ Composite of 12 analyses of water from the Green River at Jensen, Utah, taken at regular intervals between June 1 and September 30 and the recalculated analysis inferred to represent the average composition of runoff that fed Gosiute Lake during the Wilkins Peak saline stage_______________________________________ 8. Amounts of several elements found in authigenic minerals in the saline facies of the Wilkins Peak Member compared with the amounts of the same elements calculated to have been brought into Gosiute Lake during the deposition of the saline facies__ 9. Composition of some present-day thermal spring waters in the inferred hydrographic basin of Gosiute Lake____________________________________________________ 10.Mean values and ranges of constituents of 24 thermal springs that feed Lake Magadi and Little Magadi, southwestern Kenya, and the temperature, specific gravity of the water, and estimated aggregate discharge of all the springs______________ 11.Chemical constituents leached by distilled water from newly fallen volcanic ash from the Bezymanny Volcano, Kamchatka ____________________________ -----------12.Size distribution of ash particles in the samples whose analyses are given in table ll__ 13.Chemical composition of water in Abert Lake, Oreg., in 1963 ___________ -----------14.Composition of saturated sodium carbonate-bicarbonate solutions _______ ----------- 15.Chemical analyses of brines from existing sodium carbonate-rich lakes, springs, or pools, that either are at, or may arrive at, trona-salting stage _______ -----------16.Compositions of sodium chloride brines saturated in halite _________ --------------- 17.Compositions of brines from Deep Springs Lake, Calif____________________________ 18. Compositions of solutions at points A 0 , A, B, I, and C in figure 26-----------------19.The fate of 100 grams of hypothetical Gosiute Lake brine of composition A 0 , evaporated in equilibrium with the atmosphere, at a constant bicarbonate quotient of 0. 151617181920.The fate of 100 grams of hypothetical Gosiute Lake brine of composition A 0 evaporated without addition of C0 2 from an external source _____ -------------------21.Bicarbonate quotients calculated from Baker's (1958) data on brines of Lake Magadi, Kenya------------------------------------------------------------------22. Results of hydrothermal experiments at 2,000 bars, resulting in the synthesis of shortite-----------------------------------------------------------------23. Estimated amounts of sodium-bearing authigenic minerals and the correspondingweights of sodium in a unit column (1 cm2) of the saline zone of the John Hay, Jr., well lcore- ------------------