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MP-173DM Newfoundlandmtns Plate2 REV 022221 UTAH GEOLOGICAL SURVEY a division of Utah Department of Natural Resources in cooperation with Plate 2 U.S. Department of the Interior Utah Geological Survey Miscellaneous Publication 173DM U.S. Geological Survey Geologic Map of the Newfoundland Mountains and east p art of the Wells 30' x 60' Quadrangles CORRELATION OF MAP UNITS LIST OF MAP UNITS GEOLOGIC SYMBOLS INDEX TO GEOLOGIC MAPPING Surficial Quaternary-Tertiary Surficial Deposits Tertiary (Paleogene) Igneous and Sedimentary Rocks Devonian Rocks Contact –Long dashed where approximately Axial trace of anticline – Dotted where 114° 113°30' 113° MAP NAME AND AUTHORS Deposits, 41°30' 41°30' undivided located, short dashed where inferred, dotted JJJconcealed Depositional Environment Qu Ttc Dp (cross Surficial deposits, undivided (Holocene and Pleistocene) Rhyolitic tuff and sedimentary rocks (Eocene) Pilot Shale where concealed 1. Lucin NW - Miller and Oviatt, 1994 section Axial trace of syncline – Dotted where 2 2. Bovine Mountain - Jordan, 1983 only) Alluvial Playa and Spring Lacustrine and Mixed-Environment Eolian Mass-Movement Alluvial Deposits Trd Rhyodacite (Eocene) Dg Guilmette Formation Bedding plane fault – Long dashed where """ concealed 3. Terrace Mountain West - Miller and McCarthy, 2002 approximately located, dotted where 18 1 19 3 4 Qam Qal Qafy Qpm Qsm Qei Qes Qeo Qem Qmc Qam Alluvial mud (Holocene) Tg Granodiorite dikes (Eocene) Ds Simonson Dolomite concealed; ticks on hanging wall 4. Terrace Mountain East - McCarthy and Miller, 2002 Qms Holo. Qu Line of cross section Qafo Qlm Qli Qls Qlg Qla 20 5. Tecoma - Miller and Schneyer, 1985 Qal Stream alluvium (Holocene) Tbc Bettridge Creek Granodiorite (Eocene) Devonian and Silurian Rocks Overturned low-angle normal fault – Dotted 6. Lucin - Miller, 1985 where concealed; teeth on hanging wall 21 Qb Qafy Young alluvial-fan deposits (Holocene) DSd Thick–bedded dolomite, undivided 7. Pigeon Mountain - Glick and Miller, 1987 QTaf ~ 1 Ma QUATERNARY Tm McGinty Monzogranite (Eocene) Bedding form lines (cross section only) Pleistocene Low-angle normal fault – Long dashed where 8. Jackson - Miller and Glick, 1987 ? Qafo Older alluvial-fan deposits (Pleistocene) Teg Emigrant Pass intrusion of Compton and others (1977) (Eocene) DSlm Lone Mountain Dolomite approximately located, dotted where Sedimentary bedding attitude - 9. Pa tterson Pass - Miller and others, 1993 Tby concealed; teeth on hanging wall 5 6 7 8 ~ 4 Ma Plio. QTaf Oldest alluvial-fan deposits (Pleistocene and Pliocene?) Jurassic Plutonic Rocks DSu Undivided dolomite and limestone 10. Crater Island NW - Miller, 1993 Steeply dipping normal fault – Long dashed Unconformity; low-angle normal fault in Pilot Range Inclined 11. Lemay Island - Miller and Glick, 1986 Playa and Spring Deposits Jms Miners Spring Granite Silurian Rocks where approximately located, short dashed 12. Lucin 4 NW - Glick and Miller, 1986 ? where inferred, dotted where concealed; bar 41°15' 41°15' Tt Tr ~8 - 10 Ma Qpm Playa mud (Holocene) Jgd Granodiorite Sl Laketown Dolomite and ball on downthrown side 13. Pilot Peak - Miller and Lush, 1994 Tbi ~10.5 Ma Inclined, orientation approximate 14. Crater Island SW - Miller, 1990c CENOZOIC Qsm Spring mud (Holocene) Jpm Porphyritic monzogranite Ordovician Rocks Normal fault, geophysical, gravity – Dotted 23 Ts NEOGENE 15. Crater Island - Miller and others, 1990a Tdb G where concealed and very approximately 9 10 11 12 Miocene Oes Overturned Lacustrine and Mixed-Environment Deposits Jc Ely Springs Dolomite located; bar and ball on downthrown side 16. Lucin 4 SW - Miller, 1990a Tt Td Tr ~12 - 14 Ma Crater Island Quartz Monzonite TERTIARY 17. Newfoundland Mountains - Allmendinger and Jordan, 1989 Qlm Lacustrine marl (Pleistocene) Jn Oe Eureka Quartzite Thrust fault – Dotted where concealed; teeth 17 23 Newfoundland Stock of Caroon (1977) Vertical 18. Jackson Spring area - Douglas, 1984; Miller and Felger, unpublished mapping Tsc on hanging wall 22 Ts Tbi ~18.5 Ma Qli Lacustrine silt (Pleistocene) Triassic Rocks Ocw Crystal Peak Dolomite and Watson Ranch Quartzite 19. Lucin NE-Bovine area - Miller and Felger, unpublished mapping; Compton ? Fault, unknown type – Long dashed where Volcanic and metamorphic foliation - and others, 1983, unpublished mapping Unconformity; low-angle normal fault in Pilot Range Qls Lacustrine sand (Pleistocene) ^d Dinwoody Formation Ol Lehman Formation approximately located, dotted where 20. Sheep Mountain area - Miller and Felger, unpublished mapping concealed Horizontal 13 14 15 16 21. Hogup Mountains area - Stifel, 1964; Miller, unpublished mapping Qlg Lacustrine gravel (Pleistocene) Permian Rocks Ok Kanosh Shale Ttc ~37 Ma Tg Tbc Tm Teg ~34 - 42 Ma 22. Grassy Mountains area - Doelling, 1964; Miller, unpublished mapping Fault, gravity slide – Ticks on hanging wall Eocene Qla Lacustrine and alluvial deposits, undivided (Pleistocene) Pg Gerster Formation Opl Lower Pogonip Group Trd PALEOGENE Inclined 23. Great Salt Lake Desert - Miller, unpublished mapping 41° 41° Unconformity Unconformity Eolian Deposits Pm Murdock Mountain Formation Ordovician and Cambrian Rocks Zone of structural accommodation 114° 113°30' 113° Qei Eolian silt (Holocene) O_n Notch Peak Formation Vertical Jms Jgd Jpm Jc Jn ~155 - 160 Ma Ppm Phosphoria Formation, Meade Peak Phosphatic Shale Tongue Published map Unpublished, reconnaisance, and thesis mapping Lake Bonneville shorelines -- JURASSIC Qes Eolian sand and silt (Holocene) Pgr Grandeur Formation of the Park City Group Cambrian Rocks Bonneville shoreline – Dashed where Unconformity B B _cs Corset Spring Shale Member of the Orr Formation B B B Northern Pilot Range, Lion Mountain, Qeo Eolian ooid sand (Holocene) Ptc Trapper Creek Formation approximately located Ground water well Lemay Island, Pigeon Mountain, Bovine Mountains, Terrace Mountain, MESOZOIC _j and Little Pigeon Mountains and the Hogup and Grassy Mountains Qem Eolian mud (Holocene) Pbg Johns Wash Limestone Member of the Orr Formation Provo shoreline – Dashed where Badger Gulch Formation P PPPP approximately located Drill hole – Oil/gas exploration ^d Fault or depositional ^d Not pres ent in Grassy Mountains Mass-Movement Deposits _c Candland Shale Member of the Orr Formation contact with Pm TRI. Pp Pequop Formation Pg Only present at Lemay Island Pg Qmc _sd S SSS S Stansbury shoreline Colluvium and talus (Holocene) Pu Unnamed sandstone unit Sandstone and dolomite Pm Pm Qms Landslide deposits (Holocene and Pleistocene) _b Big Horse Limestone Member of the Orr Formation Southern Pilot Range, Crater Island, Ptf Third Fork(?) Formation Pilot Valley shoreline – Dashed where Ppm VVVVV V and Newfoundland Mountains Ppm approximately located Quaternary Volcanic Rocks _l Lamb Dolomite Pgr Pgr Pgr Pr Riepetown Sandstone Qb Gilbert shoreline – Dashed where PERMIAN Basalt of Sheep Mountain (Pleistocene) GGGG G G Ptc Permian and Pennsylvanian Rocks _tr Trippe Limestone Pp Pu approximately located Pbg Tertiary (Neogene) Igneous and Sedimentary Rocks Posl Oquirrh Group, Interbedded sandstone and limestone unit _to Toano Limestone Ptf Pr Posl Tby Younger basaltic lava flows (Pliocene) *os Oquirrh Group, Sandstone unit _ks Killian Springs Formation P*s P*s *os Ts Salt Lake Formation, undivided (Miocene) Unconformity Unconformity in *ol Cambrian and Neoproterozoic Rocks Grassy Mtns Oquirrh Group, Limestone unit LITHOLOGIC COLUMN Unconformity *e *ol PENN. Tsc Salt Lake Formation, conglomerate (Miocene) _Zpm P*s Strathearn Formation Prospect Mountain Quartzite *Mdc *Mdc *Mdc Southern Pilot Range, Crater Island, Newfoundland Mountains Low-angle normal fault Tt Tuff and tuff breccia (Miocene) Neoproterozoic Rocks common at base of IPMdc *e Mtp Mj MISS. Ely Limestone Tr Rhyolite (Miocene) Zmg McCoy Creek Group of Misch and Hazzard (1962), Unit G Fault(s) in Pilot Range Dp Pennsylvanian and Mississippian Rocks AGE GEOLOGIC MAP THICKNESS LITHOLOGY NOTES Dg Dg Fault Td Zmf Dacite (Miocene) *Mdc Diamond Peak Formation and Chainman Shale, undivided McCoy Creek Group of Misch and Hazzard (1962), Unit F UNIT SYMBOL Meters DSu (Feet) Ds Ds DEVONIAN Tbi Intermediate-age basaltic lava flows (Miocene) Zme McCoy Creek Group of Misch and Hazzard (1962), Unit E Mississippian Rocks Grandeur PCGp Pgr >120 (>400) DSlm Fm DSd Tdb Diabase (Miocene) Mtp Tripon Pass Limestone Zmd McCoy Creek Group of Misch and Hazzard (1962), Unit D Sl Sl SIL. Zmb McCoy Creek Group of Misch and Hazzard (1962), Unit B(?) Pequop 450–550 Oes Oes Oes Mj Joana Limestone Pp PALEOZOIC Formation (1500–1800) PERMIAN LITHOLOGIC COLUMN Oe Oe Oe Zma McCoy Creek Group of Misch and Hazzard (1962), Unit A(?) Ocw Thrust faults common Ocw Riepetown Ss Pr 90 (300) Bovine Mountains, Terrace Mountain, Hogup Mountains, Grassy Mountains in this interval in the Strathearn Fm P*s 5–40 (16–130) Unconformity Low-angle normal fault Ol Newfoundland Mountains Ely >250 Low-angle normal fault *e Ok ORDOVICIAN Limestone (>820) AGE GEOLOGIC MAP THICKNESS LITHOLOGY NOTES PENN. UNIT Diamond SYMBOL Meters Opl Opl Opl Commonly Peak Fm, <375 (Feet) *Mdc structurally Chainman (<1230) O_n LITHOLOGIC COLUMN thinned Shale Not present in _cs MISS. Mj Dinwoody 400–600 Grassy Mtns Northern Pilot Range, Lion Mountain, Lemay Island, Pigeon Mountain, Joana Ls 125 (410) ^d Formation (1300–2000) _j _sd and Little Pigeon Mountains Pilot TRIASSIC Dp 300 (980) _c Shale _b AGE GEOLOGIC MAP THICKNESS LITHOLOGY NOTES UNIT SYMBOL Meters Gerster 485–600 _l (Feet) Pg Guilmette <550 Formation (1600–1970) Dg Fm (<1800) _tr Dinwoody Fm ^d 110 (360) Fault or contact
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