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Geology and Uranium Deposits of Elk Ridge and Vicinity San Juan County, Utah

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Geology and Uranium Deposits of Elk Ridge and Vicinity San Juan County, Utah Geology and Uranium Deposits of Elk Ridge and Vicinity San Juan County, Utah By RICHARD Q. LEvVIS, SR., and RUSSELL H. CAMPBELL SHORTER CONTRIBUTIONS TO GENERAL GEOLOGY GEOLOGICAL SURVEY PROFESSIONAL PAPER 474-B Prepared on behalf of the U.S. Atomic Energy Co?'nmission UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON: 1965 UNITED STATES DEPARTMENT OF THE INTERIOR STEWART L. UDALL, Secretary GEOLOGICAL SURVEY Thomas B. Nolan, Director The U.S. Geological Survey Library has cataloged this publication as follows: Lewis, Richard Quintin, 1919- Geology and uranium deposits of Elk Ridge and vicinity, San Juan County, Utah, by Richard Q. Lewis, Sr., and Rus­ sell H. Campbell. Washington, U.S. Govt. Print. Off., 1964. iv, 69 p. illus., maps (1 col.) diagrs. (1 col.) ta·bles. 30 em. (U.S. Geological Survey. Professional Paper 474-B) Shorter contributions to general geology. Part of illustrative matter fold. in pocket. Prepared on behalf of the U.S. Atomic Energy Commission. Bibliography : p. 63-65. (Continued on next card) Lewis, Richard Quintin, 1919- .Geology and uranium deposits of Elk Ridge and vicinity, San Juan County, Utah. 1964. (Card 2) 1. Geology-Utah-San Juan Co. 2. Uranium ores-Utah-San Juan Oo. 3. 'Mines and mineral resources-Utah-S·an Juan Co. 1. Campbell, Russell Harper, 1928- joint author. II. Title. (Series) For sale by the Superintendent of Documents, U.S. Government Printing Office Washington, D.C. 20402 CONTENTS Page Page Abstract--------------~---------------------------- B1 Structure-Continued Introduction ______________________________________ _ 2 Faults-Continued Location and access ____________________________ _ 2 Bridger Jack graben ________________________ _ B29 Previous· investigations and explorations __________ _ 2 Salt Creek graben __________________________ _ 29 Present investigation ___________________________ _ 4 Sweet Alice graben _________________________ _ 29- Acknowledgments ______________________________ _ 4 Dark Canyon fault complex _________________ _ 29 GeographY----------------------------------------­ 4 The Needles fault zone _____________ --_-- ___ - 29 StratigraphY--------------------------------------- 6 Other faults ______________________________ -- 31 Paleozoic rocks, subsurface ______________________ _ 6 Geologic history ___________________________ - _- ____ -- 31 Cambrian, Ordovician, and Silurian Systems __ _ 6 Economic geology __________________ - _--------------- 34 Devonian System __________________________ _ 6 Groundwater _________________________________ _ 34 Mississippian System _______________________ _ 6 Petroleum ____________________________________ -- 35 Pennsylvanian System______________________ _ 6 Uranium deposits _____________________________ -- 36 Paleozoic rocks, exposed ________________________ _ 7 History and production ____________________ -- 37 Hermosa Formation ________________________ _ 7 Mineralogy ________ ------------------------- 37 Paradox Member ______________________ _ 7 Primary minerals _______________ ---_-_-- 38 Upper member ____________ ..: ___________ _ 7 Secondary minerals ___________________ -- 38 Rico Formation ____________________________ _ 9 Relation of organic material to ore __________ -_ 38 Cutler Formation __________________________ _ 10 Paragenesis ______________________________ -- 39 Cedar Mesa Sandstone Member _________ _ 10 Age and temperature of formation __________ -- 39 Organ Rock Tongue ____________________ _ 11 Stratigraphic association ___________________ -- 39 Mesozoic rocks ________________________________ _ 13 Host rocks _____________________ -------- 40 Moenkopi Formation ____________ -· _______ ~ __ _ 13 Lithology and porosity _____________ - 40 Hoskinnini Member____________________ _ 13 Channels _____________________ ----- 41 Upper member ________________________ _ 13 Detailed stratigraphic associations ___ _ 41 Chinle Formation __________________________ _ 14 Moenkopi-Chinle contact ______________ -- 42 Mudstone unit _________________________ _ 14 Structural associations ______________________ _ 43 Moss Back Member ____________________ _ 18 Ore genesis ______________________ ----------- 44 Lower part undifferentiated _____________ _ 18 Ore solutions __________________________ _ 44 Upper part____________________________ _ 19 Paths of solution migration ____________ -- 44 Glen Canyon Group________________________ _ 19 Permeability and fluid transmissive Wingate Sandstone _____________________ _ 19 capac~Y------------------------- 45 Kayenta Formation ____________________ _ 19 Factors controlling localization _______ -_-- 46 Navajo Sandstone ______________________ _ 20 Conclu~ons ___________________________ _ 47 San Rafael Group __________________________ _ 20 Guides to prospecting _______ - _____________ -- 48 Carmel Formation _____________________ _ 20 Mines and prospects ________________ -_-- __ -- 49 Entrada Sandstone_____________________ _ 21 Avalanchie No. 13 _____________________ _ 49 Summerville Formation _________________ _ 22 Horseshoe No.!_ ______________________ _ 50 Bluff Sandstone ________________________ _ 22 King Ed ward ___________ -- _ -- --- - --- _ -- 52 Morrison Formation ________________________ _ 23 King James-Virgene ___________________ -- 53 Salt Wash Sandstone Member ___________ _ 23 Notch No.1 ahd Notch No.4 ___________ _ 53 Cenozoic deposits ______________________________ _ 23 Notch No. 5 and Notch No. 6 __________ -- 55 Dune sand and silt _________________________ _ 23 Oakie ________________________________ _ 56 Payday _______________________________ _ Landslide and slump deposits ________________ _ 24 57 Valley filL ____________________ -· ___________ _ 24 Peavine Queen ________________________ _ 59 Alluvium _________________________________ _ 24 Sandy No.2 __________________________ _ 59 Talus _____________________________________ _ 24 Sandy No. 3 __________________________ _ 59 Texstar _______________________________ _ Alluvium and talus, undifferentiated __________ _ 24 60 Waban _______________________________ _ Structure _________________________________________ _ 24 61 Western Payday _______________________ _ Folds------------------------------------------ 24 61 Faults________________________________________ _ Woodenshoe No.3 _____________________ _ 28 62 Hammond graben __________________________ _ 28 Other mines and prospects _____ --_--_---- 63 Verdure graben ____________________________ _ 28 Reterences cited __________________ --- -- --- --- ------- 63 Shay graben _______________________________ _ 29 Index ____________________________________________ _ 67 III IV CONTENTS ILLUSTRATIONS [Plates Me in pocket] PLATE 1. Columnar section. 2. Geologic map and sections. Page FIGURE 1. Indexmaps----------------------------------------------------------------------------------------- B3 2. Photographs of Paradox Member of Hermosa Formation, showing upper part and gypsum in mudstone matrix__ 8 3. Cliffs of Cataract Canyon----------------------------------------------------------------------------- 9 4. Correlation diagram, Cutler Formation_________________________________________________________________ 12 5. Correlation diagrams, Moenkopi Formation and lower part of Chinle Formation_____________________________ 15 6. Map showing areas favorable for uranium deposits_______________________________________________________ 16 7. Photograph showing similarity of Navajo Sandstone, Carmel Formation and Entrada Sandstone_______________ 21 8. Generalized structural map of The Needles subarea _______________ --------------------------------------- 25 9. Generalized structural map of the Elk Ridge area________________________________________________________ 26 10. Shay graben on west side of Maverick Point____________________________________________________________ 29 11. Bridger Jack graben, Davis Canyon____________________________________________________________________ 30 12. Aerial view of The Needles_ _ _ _ __ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 32 13. Paragenetic sequence, Notch mines____________________________________________________________________ 39 14. Inferred channel systems in The Notch area ___________________________________________________________ .. 42 15. Generalized sections illustrating local stratigraphic associations of uranium deposits__________________________ 43 16. Map and sections of the Avalanchie No. 13 mine_------------------------------------------------------- 50 17. Map of the Horseshoe No. 1 mine_____________________________________________________________________ 51 18. Map of the King Edward mine________________________________________________________________________ 52 19. Map and section of the King James-Virgene mine________________________________________________________ 54 20. Map of the vicinity of the Notch No.1 mine____________________________________________________________ 54 21. Map and section of the Notch No. 4 mine______________________________________________________________ 54 22. Maps of workings in the Notch No.5 area______________________________________________________________ 56 23. Map of the Oakie mine_______________________________________________________________________________ 57 24. Map and sections of the Payday mine __________________________________ -_______________________________ 58 25. Map of the Pea vine Queen mine _________________________ ------ ____ -----_- ____ ----_----------__________ 59 26. Map of the Sandy No.2 mine_________________________________________________________________________
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