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Pbe Pwh Pdc Pbv Qtg Pfp Pbe Pbe Pfp Pbe Phy Qtg Phy Phy Qtg Qtg Qtg Pfp Pfp Qal Phy Phy Phy Qtg Pbe Pfp Qtg Phy Qds Qao Qcs Qcs Qao Phy Qal Qao Qao Qds Chr Chg f Chg Chr Qtl Qtl Crg f d f Qtg Qtg Qtl Crg Qtl Crg Qtl Crg f f d Crl Crl Clg Clg Qtl Clg Qal d Clg Clg Clg Clg Qtl Qtl Clg Clg Qtl Qtg Clg Crg Crg Qtl Clg Phy Clg Qtl Qtl Qao Clg Clg Qtl Cgb Clg Qtg Qao Qtl Clg Clg Qtl Qtg Qds Qtl Clg Clg Qtl Clg Clg Clg Qds Phy Qal Qtl Clg Qtl Clg Qtl Clg Clg Qtl Clg Qtl Qtl Clg Clg Qtl Clg Qao Cgm Cgm Clg Cwg Cgb Cgm Clg Cwg Cgm Clh Clg Clg Qal Phy Phy Qtg Qal Qao Phy Phy Cgm Cgm Ccs Ccs Ccs Qal Ccs Ccs Ccs Phy Qao d d Phy Cgm Qtg Qtl Cgm Clg Csg Qtl Csg Phy Csg Qtl Csg Qtl Qtl Clg Clg Clg Qcs Clg Clg Qtl Clg Clg Qtl Qtl Clg Qtg Qtl Qtl Qtl Clg Clg Qcs Qao Qal Clm Qtl Clm Qtl Qcs Qds Qal Qtl Clm Clm Clm Clm Qtl Clm Clm Qtl Qtl Clm Clm Qds Qds Qao Qal Phy Qds Qds Qds Qds Qds Qds Qds Phy Qal Qtg Qds Qcs Qds Phy Qao Qal Qcs Qao Qao Cgb Clg Qcs Qds Qcs Qao Phy Qcs Qds Qds Qcs Qcs Qtg Phy Psa Psa Psa Phy Psa Psa Pfp Qao2 Qal Qal Qal Psa Qao Phy Qao Psa Qtg Qao Pfp Pbe Pbe Qal Pbe Qao Pbe Qal Pbe Pbv af Pbv Qal Pdc Pdc Pbv Pbv Qal Qtg Pbv Qao Qal Qtg Pdc Qal Qao Pdc Qao Qal Pdc Qtg Qds Qao Pbv Pbv Pdc Qao Pbe Pbv Pbv Pbv Pdc Qao Qal Qtg Qtg Pdc Pwh Qao Qao Qtg Qtg Qtg Pdc Pwh Qcs Pdc Qds Pdc Qds Pwh Qcs Pwh Pwh Qal Pdc Pwh Qao Pbv Pdc Pdc Qtg Pbv Pbv Pbe Qtg Pwh Pdc Pbv Qds Qcs Qtg Qtg Qds Qds 5 1 Cgm Crg f Qds Qtg Qtg Qao Pbv Pbv Crg Qds Qds Qal Barclay, J.E.; and Burton, L.C., 1953, Ground-water resources of the terrace deposits and alluvium of western Tillman County, Oklahoma: Oklahoma Planning and Resources Board, Division of Water Resources Bulletin, 12, 71 p. Chase, G.W., 1950, The igneous rocks of the Roosevelt area, Oklahoma: University of Oklahoma unpublished M.S. thesis, 108 p. Gilbert, M.C., 1960, The geology of the western Glen Mountains, Oklahoma: University of Oklahoma unpublished M.S. thesis, 48 p. Gilbert, M.C., 1986a, Stop 3—Quartz Mountain State Park, Gilbert, M.C. (ed.), Petrolology of the Cambrian Wichita Mountains Igneous Suite: Oklahoma Geological Survey Guidebook 23, p. 159-163. in Gilbert, M.C., 1986b, Stop 4—Little Bow Mountains Gilbert, M.C. (ed.), Petrology of the Cambrian Wichita Mountains Igneous Suite: Oklahoma Geological Survey Guidebook 23, p. 164-166. in Ham, W.E.; Denison, R.E.; and Merritt, C.A., 1964, Basement rocks and structural evolution of southern Oklahoma: Oklahoma Geological Survey Bulletin 95, 302 p. Harlton, B.H., 1951, Faults in sedimentary part of Wichita Mountains of Oklahoma: American Association of Petroleum Geologists Bulletin 35, p. 988-999. Havens, J.S., 1977, Reconnaissance of the water resources of the Lawton Quadrangle, southwestern Oklahoma: Oklahoma Geological Survey Hydrologic Atlas, HA-6, 1:250,000, 4 sheets. Hollowell, J.R., 1965, Ground water in the alluvium of Otter Creek basin, Oklahoma: Oklahoma Water Resources Bulletin 27, 15 p. Johnson, K.S.; and Ham, W.E., 1966, Geology and mineral resources of the Permian Blaine Formation and associated strata in southwestern Oklahoma: Oklahoma Geological Survey unpublished maps. Merritt, C.A., 1958, Igneous geology of the Lake Altus area, Oklahoma: Oklahoma Geological Survey Bulletin 76, 70 p. Miser, H.D.; and others, 1954, Geologic map of Oklahoma: U.S. Geological Survey and the Oklahoma Geological Survey, 1:500,000, 1 sheet. Myers, J.D.; Gilbert, M.C.; and Loiselle, M.C., 1981, Geochemistry of the Cambrian Wichita Granite Group and revisions of its lithostratigraphy: Oklahoma Geology Notes 41, p. 172-195. 8 APPROXIMATE MEAN DECLINATION MAGNETIC NORTH TRUE NORTH Qal af Qao Qao2 Pdc Pbl Pbv Pbe Psa Qds Qcs Qtg Pwh Leonardian Guadalupian Pleistocene QUATERNARY PALEOZOIC CENOZOIC PERMIAN UNCONFORMITY UNCONFORMITY CORRELATION OF UNITS Holocene Chr Crl EARLY CAMBRIAN _ _ _ Chg Csg Clg Cgg _ _ _ _ _ _ _ _ _ Qtl f GEOLOGIC MAP OF THE OKLAHOMA PART OF THE ALTUS 30 60 QUADRANGLE, GREER, HARMON, JACKSON, KIOWA, AND TILLMAN COUNTIES, OKLAHOMA X Compiled by Thomas M. Stanley and Galen W. Miller Cartography by G. Russell Standridge 2004 Qao2 Qds Pwh Pbv Pfp Phy Ccs Clm Crg Crl Clh Cwg Chr Chg Csg Cgb Cgm Qal Qao Qao2 Qds Qcs Qtg Pdc Pfp UNCONFORMITY UNCONFORMITY DESCRIPTION OF UNITS ALLUVIUM—Unconsolidated sand, silt, clay, and gravel in stream and river channels on modern flood plains DUNE SAND—Unconsolidated windblown sand formed into definite dune structures and ridges TALUS DEPOSIT—Unconsolidated debris of angular gravel and sand derived from the weathering of outliers of the Wichita Granite Group, forming immature alluvial fans and pediment surfaces COVER SHEET SAND—Featureless sheet of windblown silt and sand WHITEHORSE GROUP, Undifferentiated—Reddish-brown and orange-brown, fine-grained sandstone and minor siltstone of the Marlow Formation (below) and the Rush Springs Formation (above). Units undifferentiated due to absence of the Emanuel gypsum bed at the top of the Marlow Formation. Maximum thickness about 30 meters DOG CREEK SHALE—Reddish-brown, silty shale. Contains thin interbeds of greenish-gray shale and several thin layers of light-gray dolomite. Thickness varies between 25 to 60 meters BLAINE FORMATION—Nine thick beds of white, massive gypsum, each typically underlain by a thin bed of dolomite and thin to thick beds of reddish-brown shale. Typically 45 55 m thick. Formation divided into the lower Elm Fork Member (Pbe) and the upper Van Vacter Member (Pbv) VAN VACTER MEMBER – – – – – – —Six beds of gypsum, each typically 1 5 m thick (each is thinner or absent to east). Dolomite and shale beds are 3 cm to 1.2 m thick. Total thickness is 20 25 m. Base mapped at the base of the Mangum Dolomite Bed ELM FORK MEMBER—Three beds of gypsum, each typically 1.5 10 m thick (each is thinner to east). Dolomite beds typically 3 cm to 1 m thick; shale intervals typically 3 10 m thick. Total thickness is 25 30 m. Base mapped at the base of the Haystack Gypsum Bed FLOWERPOT SHALE—Reddish-brown, silty shale. Contains thin interbeds of greenish-gray shale and several thin layers of gypsum and dolomite in the upper part. Thickness varies from 30 to 50 meters REFORMATORY/LUGERT GRANITE MIXED ZONE—Roof pendants and stoped blocks of Reformatory Granite incorporated along margins of main Lugert Granite intrusion at Quartz Mountain. Texture more aphanitic than either granite LUGERT GRANITE HYBRID—Gabbro assimilation phase of the Lugert Granite. High quartz content, with abundant biotite. May contain some inclusions of diabase dikes, Raggedy Mountain gabbros, and apophyses of Lugert Granite. Phase best expressed at Little Bow Mountain LONG MOUNTAIN GRANITE—Light colored, highly granophyric microporphyry with hornblende as dominant ferromagnsian mineral REFORMATORY GRANITE—Reddish, coarse-grained, equigranular granite; hornblende dominant, while biotite may be present; locally xenoliths of gabbro and andesite occur gabbro—Small, isolated outcrops of dark gray to black, medium- to coarsely crystalline gabbro containing high amounts of labradorite and pyroxene. Unit normally exhibits strong hydrothermal alteration GLEN MOUNTAINS LAYERED COMPLEX—Medium to light gray, medium- to sometimes coarsely crystalline; at least 5 distinctly layered zones containing variable amounts of anorthosite, anorthositic gabbro, and troctolite (see Powell and others, 1980). plagioclase, augite, and olivine yielding WICHITA GRANITE GROUP, Undifferentiated—Pink, medium crystalline granite; both biotite and hornblende present, but biotite dominates; appears to contain apophyses of Lugert Granite. Unit pertains to Merritt’s (1958) hornblende-biotite granite, and Gilbert’s (1986b) biotite-hornblende granite from Little Bow Mountain HEADQUARTERS/REFORMATORY GRANITE MIXED ZONE—Roof pendants and stoped blocks of Headquarters Granite cut by numerous dikes and apophyses of Reformatory Granite HEADQUARTERS GRANITE—Brownish-red, finely crystalline, biotite-bearing microgranite with local porphyritic texture MOUNT SCOTT GRANITE—Variably granophyric porphyry with ovoid feldspar crystals; hornblende dominant ferromagnesian mineral HENNESSEY FORMATION—Reddish-brown shale, with some reddish-brown siltstone beds. In areas where the San Angelo Formation is missing (north-central part of map) the top of the Hennessey is represented by the Brinkman Sandstone Bed, a 2-3 m thick sandstone with scattered coarse grains of quartz and feldspar. Only upper 40–50 m are exposed COLD SPRINGS BRECCIA—Dark gray microdiorite blocks set in matrix of leucogranite; locally medium gray quartz monzodiorite blocks in light gray granodiorite matrix LUGERT GRANITE—Reddish-pink to reddish-brown, medium-grained granite. Feldspar crystals typically twice as large as quartz; hornblende more common than biotite. Some porphyritic texture may occur along contact with Reformatory Granite absent a mixed zone diabase dikes—Various dark to medium gray, to dark green aphanitic mafic rock; usually exhibits strong hydrothermal alteration. Dikes range from 0.5 to 1 meter wide, and may extend for several kilometers felsic dikes—Various light colored, aphanitic, fine-crystalline, to sometimes medium crystalline rocks of granitic composition. Most are only a few centimeters wide, and extend for only a few 100 meters OLDER ALLUVIUM—Unconsolidated sand, silt, clay, and gravel in stream and river channels, mainly between 0–12 m above modern flood plains OLDER ALLUVIUM—Unconsolidated sand, silt, clay, and gravel in stream and river channels concentrated between 12–24 m above modern flood plains TERRACE GRAVEL—Unconsolidated gravel, sand, silt, and clay laid down at several levels along former courses of present-day rivers and streams Pbv EL RENO GROUP RAGGEDY MOUNTAIN GABBRO GROUP Clm Csg Chr SAN ANGELO SANDSTONE—Light-gray to reddish-brown, fine-grained, cross-bedded sandstone, with local interbeds of yellowish-gray and reddish-brown shale; absent to the north; thickness about 0–30 meters _ _ _ _ _ _ _ _ _ _ _ _ f ARTIFICIAL FILL—Natural or artificial talus, slumps, and tailings covering formally exposed areas around active and inactive mining operations Qao2 Qds Qtl af Pwh Pbe Pbl Psa Phy Ccs Clg Crl Clh Crg Chg Csg Cwg Cgb Cgm d d f f Boise City Gu ymon Beave r Buffalo Foss Reservoir Elk City A ltu s Watonga Anadarko Lawton Pauls Valley Ardmore Gainesville Burkburnett Wichita Falls Ponca City P aw huska Bartle sville Tulsa Muskog ee Stilwell Eufaula Fort Smit h McA les ter Mena An tlers Paris De Queen Idabel Bristow Shaw nee Ada Tishomingo Sherman Keystone Lake Woo dwar d Fairview Enid Oklahoma City North Oklahoma City South Alva 103° 102° 101° 100° 99° 98° 97° 96° 95° 37° 36° 35° 34° Neosh o Fayetteville Map of Oklahoma showing the locations of the 30 X 60 quadrangles. Red shaded quadrangle represents the current map Vernon Base Map Credits Geologic Map Credits The base map was compiled by the U.S. Geological Survey from 1:24,000 and 1:62,500-scale topographic maps dated 1961-1971. Planimetry revised from aerial photographs taken 1983. Map edited 1985. Universal Transverse Mercator (UTM) projection. 1927 North American Datum. 25,000-foot grid ticks based on Oklahoma coordinate system, north zone. 10,000-meter UTM grid, zone 14. Geology compiled and field checked by Thomas M. Stanley and Galen W. Miller, 2003 - 2004. Research supported by the U.S. Geological Survey, National Cooperative Geologic Mapping Program, under Assistance Award Number 03HQAG0014. The views and conclusions contained in this document are those of the authors and should not be interpreted as necessarily representing the official policies, either expressed or implied, of the U.S. Government. Cartography and layout prepared by G. Russell Standridge, 2004. Originally published as Open-File Report OF5-2005. Map revised and published as OGQ-59. Unit contact; approximately located Axial trace of synclinal structure, dashed where approximate Fault, dotted where covered; ball and spike on downthrown side. All faults are normal faults, dipping 60–65° Monoclinal flexure, hachures show dip direction of flexed strata; dip angle of flexed strata shown locally SYMBOLS 25 Powell, B.N.; Gilbert, M.C.; and Fischer, J.F., 1980, Lithostratigraphic classification of basement rocks of the Wichita province, Oklahoma: Geological Society of America Bulletin, pt.1, 91, 509-514, and pt.2, 91, 1875-1994.. OKLAHOMA GEOLOGICAL SURVEY Charles J. Mankin, Director OKLAHOMA GEOLOGICAL SURVEY 1908 CENTENNIAL 2008 Oklahoma Geologic Quadrangle OGQ-59 Geologic Map of the Altus 30 X 60 Quadrangle
Object Description
Description
Title | OGQ-59_Altus_100K-1 1 |
Full text | Pbe Pwh Pdc Pbv Qtg Pfp Pbe Pbe Pfp Pbe Phy Qtg Phy Phy Qtg Qtg Qtg Pfp Pfp Qal Phy Phy Phy Qtg Pbe Pfp Qtg Phy Qds Qao Qcs Qcs Qao Phy Qal Qao Qao Qds Chr Chg f Chg Chr Qtl Qtl Crg f d f Qtg Qtg Qtl Crg Qtl Crg Qtl Crg f f d Crl Crl Clg Clg Qtl Clg Qal d Clg Clg Clg Clg Qtl Qtl Clg Clg Qtl Qtg Clg Crg Crg Qtl Clg Phy Clg Qtl Qtl Qao Clg Clg Qtl Cgb Clg Qtg Qao Qtl Clg Clg Qtl Qtg Qds Qtl Clg Clg Qtl Clg Clg Clg Qds Phy Qal Qtl Clg Qtl Clg Qtl Clg Clg Qtl Clg Qtl Qtl Clg Clg Qtl Clg Qao Cgm Cgm Clg Cwg Cgb Cgm Clg Cwg Cgm Clh Clg Clg Qal Phy Phy Qtg Qal Qao Phy Phy Cgm Cgm Ccs Ccs Ccs Qal Ccs Ccs Ccs Phy Qao d d Phy Cgm Qtg Qtl Cgm Clg Csg Qtl Csg Phy Csg Qtl Csg Qtl Qtl Clg Clg Clg Qcs Clg Clg Qtl Clg Clg Qtl Qtl Clg Qtg Qtl Qtl Qtl Clg Clg Qcs Qao Qal Clm Qtl Clm Qtl Qcs Qds Qal Qtl Clm Clm Clm Clm Qtl Clm Clm Qtl Qtl Clm Clm Qds Qds Qao Qal Phy Qds Qds Qds Qds Qds Qds Qds Phy Qal Qtg Qds Qcs Qds Phy Qao Qal Qcs Qao Qao Cgb Clg Qcs Qds Qcs Qao Phy Qcs Qds Qds Qcs Qcs Qtg Phy Psa Psa Psa Phy Psa Psa Pfp Qao2 Qal Qal Qal Psa Qao Phy Qao Psa Qtg Qao Pfp Pbe Pbe Qal Pbe Qao Pbe Qal Pbe Pbv af Pbv Qal Pdc Pdc Pbv Pbv Qal Qtg Pbv Qao Qal Qtg Pdc Qal Qao Pdc Qao Qal Pdc Qtg Qds Qao Pbv Pbv Pdc Qao Pbe Pbv Pbv Pbv Pdc Qao Qal Qtg Qtg Pdc Pwh Qao Qao Qtg Qtg Qtg Pdc Pwh Qcs Pdc Qds Pdc Qds Pwh Qcs Pwh Pwh Qal Pdc Pwh Qao Pbv Pdc Pdc Qtg Pbv Pbv Pbe Qtg Pwh Pdc Pbv Qds Qcs Qtg Qtg Qds Qds 5 1 Cgm Crg f Qds Qtg Qtg Qao Pbv Pbv Crg Qds Qds Qal Barclay, J.E.; and Burton, L.C., 1953, Ground-water resources of the terrace deposits and alluvium of western Tillman County, Oklahoma: Oklahoma Planning and Resources Board, Division of Water Resources Bulletin, 12, 71 p. Chase, G.W., 1950, The igneous rocks of the Roosevelt area, Oklahoma: University of Oklahoma unpublished M.S. thesis, 108 p. Gilbert, M.C., 1960, The geology of the western Glen Mountains, Oklahoma: University of Oklahoma unpublished M.S. thesis, 48 p. Gilbert, M.C., 1986a, Stop 3—Quartz Mountain State Park, Gilbert, M.C. (ed.), Petrolology of the Cambrian Wichita Mountains Igneous Suite: Oklahoma Geological Survey Guidebook 23, p. 159-163. in Gilbert, M.C., 1986b, Stop 4—Little Bow Mountains Gilbert, M.C. (ed.), Petrology of the Cambrian Wichita Mountains Igneous Suite: Oklahoma Geological Survey Guidebook 23, p. 164-166. in Ham, W.E.; Denison, R.E.; and Merritt, C.A., 1964, Basement rocks and structural evolution of southern Oklahoma: Oklahoma Geological Survey Bulletin 95, 302 p. Harlton, B.H., 1951, Faults in sedimentary part of Wichita Mountains of Oklahoma: American Association of Petroleum Geologists Bulletin 35, p. 988-999. Havens, J.S., 1977, Reconnaissance of the water resources of the Lawton Quadrangle, southwestern Oklahoma: Oklahoma Geological Survey Hydrologic Atlas, HA-6, 1:250,000, 4 sheets. Hollowell, J.R., 1965, Ground water in the alluvium of Otter Creek basin, Oklahoma: Oklahoma Water Resources Bulletin 27, 15 p. Johnson, K.S.; and Ham, W.E., 1966, Geology and mineral resources of the Permian Blaine Formation and associated strata in southwestern Oklahoma: Oklahoma Geological Survey unpublished maps. Merritt, C.A., 1958, Igneous geology of the Lake Altus area, Oklahoma: Oklahoma Geological Survey Bulletin 76, 70 p. Miser, H.D.; and others, 1954, Geologic map of Oklahoma: U.S. Geological Survey and the Oklahoma Geological Survey, 1:500,000, 1 sheet. Myers, J.D.; Gilbert, M.C.; and Loiselle, M.C., 1981, Geochemistry of the Cambrian Wichita Granite Group and revisions of its lithostratigraphy: Oklahoma Geology Notes 41, p. 172-195. 8 APPROXIMATE MEAN DECLINATION MAGNETIC NORTH TRUE NORTH Qal af Qao Qao2 Pdc Pbl Pbv Pbe Psa Qds Qcs Qtg Pwh Leonardian Guadalupian Pleistocene QUATERNARY PALEOZOIC CENOZOIC PERMIAN UNCONFORMITY UNCONFORMITY CORRELATION OF UNITS Holocene Chr Crl EARLY CAMBRIAN _ _ _ Chg Csg Clg Cgg _ _ _ _ _ _ _ _ _ Qtl f GEOLOGIC MAP OF THE OKLAHOMA PART OF THE ALTUS 30 60 QUADRANGLE, GREER, HARMON, JACKSON, KIOWA, AND TILLMAN COUNTIES, OKLAHOMA X Compiled by Thomas M. Stanley and Galen W. Miller Cartography by G. Russell Standridge 2004 Qao2 Qds Pwh Pbv Pfp Phy Ccs Clm Crg Crl Clh Cwg Chr Chg Csg Cgb Cgm Qal Qao Qao2 Qds Qcs Qtg Pdc Pfp UNCONFORMITY UNCONFORMITY DESCRIPTION OF UNITS ALLUVIUM—Unconsolidated sand, silt, clay, and gravel in stream and river channels on modern flood plains DUNE SAND—Unconsolidated windblown sand formed into definite dune structures and ridges TALUS DEPOSIT—Unconsolidated debris of angular gravel and sand derived from the weathering of outliers of the Wichita Granite Group, forming immature alluvial fans and pediment surfaces COVER SHEET SAND—Featureless sheet of windblown silt and sand WHITEHORSE GROUP, Undifferentiated—Reddish-brown and orange-brown, fine-grained sandstone and minor siltstone of the Marlow Formation (below) and the Rush Springs Formation (above). Units undifferentiated due to absence of the Emanuel gypsum bed at the top of the Marlow Formation. Maximum thickness about 30 meters DOG CREEK SHALE—Reddish-brown, silty shale. Contains thin interbeds of greenish-gray shale and several thin layers of light-gray dolomite. Thickness varies between 25 to 60 meters BLAINE FORMATION—Nine thick beds of white, massive gypsum, each typically underlain by a thin bed of dolomite and thin to thick beds of reddish-brown shale. Typically 45 55 m thick. Formation divided into the lower Elm Fork Member (Pbe) and the upper Van Vacter Member (Pbv) VAN VACTER MEMBER – – – – – – —Six beds of gypsum, each typically 1 5 m thick (each is thinner or absent to east). Dolomite and shale beds are 3 cm to 1.2 m thick. Total thickness is 20 25 m. Base mapped at the base of the Mangum Dolomite Bed ELM FORK MEMBER—Three beds of gypsum, each typically 1.5 10 m thick (each is thinner to east). Dolomite beds typically 3 cm to 1 m thick; shale intervals typically 3 10 m thick. Total thickness is 25 30 m. Base mapped at the base of the Haystack Gypsum Bed FLOWERPOT SHALE—Reddish-brown, silty shale. Contains thin interbeds of greenish-gray shale and several thin layers of gypsum and dolomite in the upper part. Thickness varies from 30 to 50 meters REFORMATORY/LUGERT GRANITE MIXED ZONE—Roof pendants and stoped blocks of Reformatory Granite incorporated along margins of main Lugert Granite intrusion at Quartz Mountain. Texture more aphanitic than either granite LUGERT GRANITE HYBRID—Gabbro assimilation phase of the Lugert Granite. High quartz content, with abundant biotite. May contain some inclusions of diabase dikes, Raggedy Mountain gabbros, and apophyses of Lugert Granite. Phase best expressed at Little Bow Mountain LONG MOUNTAIN GRANITE—Light colored, highly granophyric microporphyry with hornblende as dominant ferromagnsian mineral REFORMATORY GRANITE—Reddish, coarse-grained, equigranular granite; hornblende dominant, while biotite may be present; locally xenoliths of gabbro and andesite occur gabbro—Small, isolated outcrops of dark gray to black, medium- to coarsely crystalline gabbro containing high amounts of labradorite and pyroxene. Unit normally exhibits strong hydrothermal alteration GLEN MOUNTAINS LAYERED COMPLEX—Medium to light gray, medium- to sometimes coarsely crystalline; at least 5 distinctly layered zones containing variable amounts of anorthosite, anorthositic gabbro, and troctolite (see Powell and others, 1980). plagioclase, augite, and olivine yielding WICHITA GRANITE GROUP, Undifferentiated—Pink, medium crystalline granite; both biotite and hornblende present, but biotite dominates; appears to contain apophyses of Lugert Granite. Unit pertains to Merritt’s (1958) hornblende-biotite granite, and Gilbert’s (1986b) biotite-hornblende granite from Little Bow Mountain HEADQUARTERS/REFORMATORY GRANITE MIXED ZONE—Roof pendants and stoped blocks of Headquarters Granite cut by numerous dikes and apophyses of Reformatory Granite HEADQUARTERS GRANITE—Brownish-red, finely crystalline, biotite-bearing microgranite with local porphyritic texture MOUNT SCOTT GRANITE—Variably granophyric porphyry with ovoid feldspar crystals; hornblende dominant ferromagnesian mineral HENNESSEY FORMATION—Reddish-brown shale, with some reddish-brown siltstone beds. In areas where the San Angelo Formation is missing (north-central part of map) the top of the Hennessey is represented by the Brinkman Sandstone Bed, a 2-3 m thick sandstone with scattered coarse grains of quartz and feldspar. Only upper 40–50 m are exposed COLD SPRINGS BRECCIA—Dark gray microdiorite blocks set in matrix of leucogranite; locally medium gray quartz monzodiorite blocks in light gray granodiorite matrix LUGERT GRANITE—Reddish-pink to reddish-brown, medium-grained granite. Feldspar crystals typically twice as large as quartz; hornblende more common than biotite. Some porphyritic texture may occur along contact with Reformatory Granite absent a mixed zone diabase dikes—Various dark to medium gray, to dark green aphanitic mafic rock; usually exhibits strong hydrothermal alteration. Dikes range from 0.5 to 1 meter wide, and may extend for several kilometers felsic dikes—Various light colored, aphanitic, fine-crystalline, to sometimes medium crystalline rocks of granitic composition. Most are only a few centimeters wide, and extend for only a few 100 meters OLDER ALLUVIUM—Unconsolidated sand, silt, clay, and gravel in stream and river channels, mainly between 0–12 m above modern flood plains OLDER ALLUVIUM—Unconsolidated sand, silt, clay, and gravel in stream and river channels concentrated between 12–24 m above modern flood plains TERRACE GRAVEL—Unconsolidated gravel, sand, silt, and clay laid down at several levels along former courses of present-day rivers and streams Pbv EL RENO GROUP RAGGEDY MOUNTAIN GABBRO GROUP Clm Csg Chr SAN ANGELO SANDSTONE—Light-gray to reddish-brown, fine-grained, cross-bedded sandstone, with local interbeds of yellowish-gray and reddish-brown shale; absent to the north; thickness about 0–30 meters _ _ _ _ _ _ _ _ _ _ _ _ f ARTIFICIAL FILL—Natural or artificial talus, slumps, and tailings covering formally exposed areas around active and inactive mining operations Qao2 Qds Qtl af Pwh Pbe Pbl Psa Phy Ccs Clg Crl Clh Crg Chg Csg Cwg Cgb Cgm d d f f Boise City Gu ymon Beave r Buffalo Foss Reservoir Elk City A ltu s Watonga Anadarko Lawton Pauls Valley Ardmore Gainesville Burkburnett Wichita Falls Ponca City P aw huska Bartle sville Tulsa Muskog ee Stilwell Eufaula Fort Smit h McA les ter Mena An tlers Paris De Queen Idabel Bristow Shaw nee Ada Tishomingo Sherman Keystone Lake Woo dwar d Fairview Enid Oklahoma City North Oklahoma City South Alva 103° 102° 101° 100° 99° 98° 97° 96° 95° 37° 36° 35° 34° Neosh o Fayetteville Map of Oklahoma showing the locations of the 30 X 60 quadrangles. Red shaded quadrangle represents the current map Vernon Base Map Credits Geologic Map Credits The base map was compiled by the U.S. Geological Survey from 1:24,000 and 1:62,500-scale topographic maps dated 1961-1971. Planimetry revised from aerial photographs taken 1983. Map edited 1985. Universal Transverse Mercator (UTM) projection. 1927 North American Datum. 25,000-foot grid ticks based on Oklahoma coordinate system, north zone. 10,000-meter UTM grid, zone 14. Geology compiled and field checked by Thomas M. Stanley and Galen W. Miller, 2003 - 2004. Research supported by the U.S. Geological Survey, National Cooperative Geologic Mapping Program, under Assistance Award Number 03HQAG0014. The views and conclusions contained in this document are those of the authors and should not be interpreted as necessarily representing the official policies, either expressed or implied, of the U.S. Government. Cartography and layout prepared by G. Russell Standridge, 2004. Originally published as Open-File Report OF5-2005. Map revised and published as OGQ-59. Unit contact; approximately located Axial trace of synclinal structure, dashed where approximate Fault, dotted where covered; ball and spike on downthrown side. All faults are normal faults, dipping 60–65° Monoclinal flexure, hachures show dip direction of flexed strata; dip angle of flexed strata shown locally SYMBOLS 25 Powell, B.N.; Gilbert, M.C.; and Fischer, J.F., 1980, Lithostratigraphic classification of basement rocks of the Wichita province, Oklahoma: Geological Society of America Bulletin, pt.1, 91, 509-514, and pt.2, 91, 1875-1994.. OKLAHOMA GEOLOGICAL SURVEY Charles J. Mankin, Director OKLAHOMA GEOLOGICAL SURVEY 1908 CENTENNIAL 2008 Oklahoma Geologic Quadrangle OGQ-59 Geologic Map of the Altus 30 X 60 Quadrangle |
Date created | 2014-01-07 |
Date modified | 2014-01-07 |