34. Structural diagram of the Trout Creek-Goat Peak area, showing overturn in the Roberts thrust and hypothetical stages of its development ______ __ _________________________________________________________________ -35. Diagram to show expected geometry of: A, a pile of thrust sheets later folded together and B, a pile of thrust sheets formed and folded concurrently ____________________________________________________________ ---36. Diagram showing the mutual relations of the Trout Creek, Roberts, Bateman, Mill Creek, and Hilltop faults___ 114 37. View looking west in Dean Canyon, showing Bens Peak thrust _________ ___ __ __ __________ ._________________ 38. Bens P eak from the southwest, showing Bens Peak and associated faults ___________________________ -------119 39. North flank of Mount Lewis, showing Whisky Canyon and Havingdon Peak faults_________________________ 124 40. Bouguer gravity anomaly map of part of Crescent Valley________________________________________________ 128 41. Bouguer gravity anomaly and diagrammatic geologic profiles along line A-A' of figure 40____________________ 129 42. Map showing principal mines of Crescent Valley and Mount Lewis quadrangles and neighboring areas _______ -130 43. Barite sold or used by Nevada producers, 1934-58____ __________________________________________________ 44. Sketch map of part of the Gold Acres mine ____ ,________________________________________________________ 135 45. Map of the Hilltop barite deposit______________________________________________________________________ 46. Map of the Bateman Canyon barite deposit____________________________________________________________ 47. Map of the Greystone barite mine____________________________________________________________________~6 9. Recoverable metals in ore mined in the Bullion, Hilltop, and Lewis districts, 1869-1957, inclusive______________ 130 10. Semiquantitative spectrographic analyses of selected ore minerals___________________________________________ 133 11. Analyses, chemical and.spectrographic, of host rocks and ore at the Hilltop (Valley View), Bateman Canyon, and

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