Document 10895695
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106°35'0"W 106°32'30"W 358000 357000 356000 355000 34°30'0"N 361000 360000 359000 NMBGMR Open-file Geologic Map 100 Last Modified April 2012 362000 Correlation Chart of Map Units Qpm Qpy Qa Valley Floor & Piedmont Slope 3818000 Qa Tributary Stream 3818000 Abo Arroyo Holocene J af Qpy Qay Qaay Qls Qae Pennsylvanian Qa Qpa Qaam Upper 3817000 3817000 Qca Qaamo Qp 3816000 ! ! ! ! Pleistocene ! 3816000 ! ! Xbs Xbq ! ! ! ! ! ! ! ! ! Xbr 81 ! ! ! 72 ! ! 58 ! ! ! ¦ Qpm ! ! ! Qa 79 ¦ ! ! ! ! ! ! Xbq ! ! Xs ! ! ! o o ³ : ! F Xbr 16 ! Xsru 50 &b? 13 ! ! 15 : ! ! ³ ! ¦ ! Qpa o Xsrh 70 55 o Qpm1 &m2 70 ! Qay ! ¦ ))) ))) ))) : : s: : : : ))) s Montosa Faul t : s ))) Oligocene : ³ t t )) ) ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! t ! ! ! ! ! ! ! ! ! ! ! ? ¦¦ ¦¦ ¦ o o¦ ¦ ܦ ¦ oo ¦ ¦ ¦ ¦ ¦ ¦¦ ¦ ! ! s s s s ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ? ? ? ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! )))) ! ¦S ! I ! ¦ I ! ³ t ¦ Pla ³ I ! T ! u S ! S ? ! ) )) S Qpo Qp 354000 353000 356000 355000 106°35'0"W 34°22'30"N 357000 Base map from U.S. Geological Survey 1952, from photographs taken 1947. Map edited in 1979 1927 North American datum, UTM projection -- zone 13N 1000-meter Universal Transverse Mercator grid, zone 13, shown in red 1 0.5 ȱȬȱȱȱǯȱ Pa Pla 50 8 362000 50 S Řȱ¢ȱȱȱǯȱ ȱȱ Řȱȱȱ¡ǯȱ řȱȱȱȱȱǯ Qls 0 0 1000 2000 3000 QTsp 1 MILE 4000 5000 6000 May 2005 Revised October 2005 7000 FEET Piedmont alluvium, intermediate subunit (middle Pleistocene)—Strong-brown to ¢ȱ Ȭ ȱ ǻŝǯśȱ śȦŜǰȱ ŗŖȱ ŞȦŘǼǰȱ ¢ȱ ȱ ȱ ȱ ȱ ǯȱ ȱ exhibit moderately developed Stage II to III carbonate morphology and deposits commonly overlie older, paler-colored alluvial deposits. Deposit is at least 2-3 m thick ȱȱȱȱǯȱȱ Ps Pg Py Pyjc Pyt Pym Pa Pal Piedmont alluvium, older subunit (middle Pleistocene)—White to pinkish-white ǻŗŖȱŞȦŗȱȬȱŝǯśȱŞȦŘǼǰȱ¢Ȭȱȱǯȱȱȱ ȱȱȱ¡ȱ Stage III+ carbonate morphology. Schist and granite clasts are commonly weathered and ǯȱȱȱȱ¢ȱęǯȱȬȬ ȱ¢ȱȱȱȱȱ ǯȱ ȱ ȱ ¢ȱ śȬŗŖȱ ȱ ȱ ȱ ȱ ȱ ȱ ȱ ȱ śŖȱ ȱ ȱ ǯȱ ȱ ȱ ¡ǰȱ ȱ ¡ȱ ȱ ȱ ȱ ȱ ȱ ȱ deposit thickness is greater than 3 m. Piedmont alluvium, older (lower (?) to middle Pleistocene)—Poorly-sorted, poorly-to moderately-consolidated and calcium carbonate-cemented sand. Contains strongly develȱȱ ȱȱƸȱȱ¢ȱȱȱȱȱŗśȬŘŖȱȱȱȱ Arroyo. Deposit surfaces are highly dissected and are locally preserved in the Blue Springs ȱ ȱ ¢ȱ ǯȱ ȱ ¢ȱ ȱ ȱ ȱ ȱ ȱ ȱ ǯȱ Deposits are at least 3 m thick. Pb Stream alluvium, undivided (upper Holocene to historic)—Brown (7.5YR 4/4), medium- to very coarse-grained, poorly to moderately sorted, poorly consolidated pebble- to cobble ȱ ȱȱȱȱȱȱȱȱȱȱǯȱȱȱ ȱȱȱȱȱȱȱĵǰȱǰȱȱȱǯȱ ȱȱ¢ȱǰȱȱȱȱȱŚŖȱȱȱǯȱȱȱȱ very weak with disseminated carbonate cement. Deposit underlies narrow to broad streams that are inset against low terrace deposits. Base not observed. Stream alluvium, undivided (uppermost Pleistocene to Holocene)—Brown (7.5YR 5/4), poorly to moderately sorted, poorly consolidated light-brown and light reddish-brown to gray-brown pebble and cobble conglomerate and sand with minor accumulations of boulders. ȱ ȱ ȱ ¢ȱ ȱ ȱ ȱ ȱ ȱ ȱ ȱ ¢ǯȱ ȱ ȱ ȱ ¢ȱ ęȱ ȱ ȱ ȱ ȱ ȱ ȱ ȱ ȱ ȱ Ȭ¢ȱ ȱ ȱ ȱ Arroyo (Qaay). Estimated thickness is probably less than 4 m. ęȱęȱǻǼȯȱęȱȱȱěȱ¢ȱȱǯȱȱȱȱ ȱ ȱ ¢ȱ ¡ȱ ȱ ȱ ǯȱ ȱ ȱ ȱ ȱ ȱ disturbed areas are areally extensive. P*um *m5 Eolian sand, alluvium, and colluvium, undivided (Holocene to upper Pleistocene)—Brown ǻŝǯśȱ śȦŘȬśȦŚǼǰȱ ǰȱ ¢ȱ ȱ ȱ ęǰȱ ęȬȱ ȱ Ȭȱ ȱ ȱ¢ȱȱ ȱĴȱǯȱȱȱǰȱȱȱȱȱǯȱ Deposits are typically less than 0.5 m thick. Colluvium and alluvium, undivided (Holocene to upper Pleistocene)—Brown (7.5YR 5/4), ¢ȱǰȱ¢ȱȱȱęǰȱęȬȱȱȬǰȱȬȱȱ¡supported deposits derived from a variety of mass-movement hill-slope processes, including ȱĚ ǰȱ ȱȱȱǯȱȱȱ¢¢ȱȱȱȱ¢ȱ Ěȱ ȱ ǯȱ ȱ ȱ ȱ ȱ ȱ ȱ ȱ ȱ ěȱ ȱ ¢ȱ¡ǯȱȱȱ¢ȱȱȱŗȱȱDzȱȱȬȱȱ£ȱȱ it is less than 0.3 m thick. Upper part of Sol se Mete Member of Myers et al., 1981 (Upper Pennsylvanian – Missourian)— ȱȱȱȱȱȱȱęȱȱěȱ¢ȱȱȱȱ ȱȱȱ ȱȱȱȱǻȬŘǼǯȱȱȬȱȱȬȱěȬȱȱǻ ȱȱ Ǽȱ ȱ ȱ ǰȱ ȱ ěDZȱ ŗǼȱ ȱ ȱ ȱ ȱ ȱ chert bands (0.5 m long, <20 cm thick), 2) middle limestone interbedded with orange-weathering silty limestone and sparse chert bands, and 3) thick-bedded upper limestone with distinctive Ȭ ȱĴȱȱȱŘȱǯȱȱȱȱǰȱ¢£ǰȱȱǰȱ¢loid algae, brachiopods, and abundant bioturbation. Approximately 65 ft thick (20 m). *m3 Tres Hermanos Formation (Upper Cretaceous)—(Shown in cross section only). Description ȱ¢ȱȱǯȱǻŗşŞŜǼǯȱȱȱȱȱŚŖȱȱǻŗŘȱǼȱȬ ȱȱ¢ȱ¢ ȱ ȱ ȱ ȱ ęȱ ǯȱ ȱ ȱ ȱ ȱ ȱ ȱ ȱ ȱ ǰȱǰȱȱȱDzȱ¢Ȭȱȱ¢ȱǰȱǰȱȱęȬȱDzȱ ȱ ȱ ȱ ȱ ȱ ȱ ȱ ȱ ȱ śȱ ȱ ǻŗǯśȱ Ǽȱ ȱ ȱ ȱ ȱ ȱ ȱȱǻęȱ¢ȱǯȱǯȱǰȱǰȱ ĴȱǯǰȱŗşŞŗǼǯȱȱ ȱ beds are very pale orange to moderate-brown, medium-to coarse-grained sandstone and conglomerate that locally contains fossil wood. Includes probable equivalents of Dakota Sandstone and Mancos Shale. About 760 ft (230 m). Lower portion of Solse Mete Member of Myers et al., 1981 (Upper Pennsylvanian– Missourian)—ȱȱȱȱȱȱȱȱȱȱȱ¢ȱȱ¢ȱǯȱ ȱ ¢ȱ ¡ǰȱ Ȭȱ ȱ ȱ ȱ ȱ ęȬȱ ȱ ȱ (siltstone) interbedded with limestone beds (mudstone through grainstone) with marl interbeds, rip-up clasts, and plane laminations, and laterally discontinuous white and green sandstones with ȱȱǻǼȱǻŗȬŘȱȱǼǯȱȱȱŗŖŖȱȱȱǻřŖȱǼǯ *m2 *m1 Los Moyos Limestone (Middle Pennsylvanian – Desmoinesian)—Basal contact with underlying ȱȱȱȱȱȱȱȱęȱȱǯȱȱȬȱȱȬǰȱěforming limestone (limey mudstone to skeletal wackestones and grainstones). Individual limeȱȱŗȬȱŘȱȱǯȱȱȱȱȱȱȱȱǻǀśȱǼȱȱ ȱŚŖȱǰȱȱŘŖȱ ǰȱȱȱȱȱǯȱȱȱȱȱȱȱǻĵȱȱ ȱ ȱ ȱ Ǽǰȱ ĵȱ ȱ ȱ ȱ ǰȱ ȱ ¢ȱ ¡ȱ ȱ ȱ ǯȱ ȱ ȱ ȱ ǰȱ ¢£ǰȱ ǰȱ ǰȱ ǰȱ and abundant bioturbation obscuring primary sedimentary structures. Weathers medium gray. ȱśŜŖȱȱȱǻŗŝŘȱǼǯȱ *s Sandia Formation (Middle Pennsylvanian)—(Shown in cross section only). Interbedded sandy, fossiliferous limestones, shales, siltstones, sandstones, and conglomerates. Fossil types include ȱȱȱȱǯȱȱȱȱȱȱ ȱȬȱȱȬ¢ȱ ȱ ȱ ȱǯȱȱȱȱȱĵȱĵȬȱȱ ȱȱȱ ȱǯȱȱȱȱ ȱŗȱȱȱȱȱȱȱȱǯȱȱ ȱ ȱȱȱȱ ȱ£ȱǯȱȱȱŜŖŖȱȱǻŗŞřȱǼȱǯȱȱ Dockum Formation (Upper Triassic)—(Shown in cross section only). Description from Myers ȱǯȱǻŗşŞŜǼǯȱȱȱȱ¢ȱ¡ȱȱȱȱDzȱȱǰȱęȬǰȱ ȬȱȬȱȱȱȱȱȱěDzȱ ȱȱȱ¢Ȭȱ ȱȬȱȱȱęȬȱǯȱ¢ȱȱȱȱȱǯȱȱ ȱŗŞŖȱȱǻśŚȱǼȱǯ Paleozoic *m4 Landslide deposits (Pleistocene)—Poorly to well consolidated and very poorly sorted, sand, and breccia. Formed by mass-movement, commonly on steep hill slopes. Arrows indicate inferred direction of movement. ȱȱ San Andres Limestone (Lower Permian)—(Shown in cross section only). Description from ¢ȱȱǯȱǻŗşŞŜǼǯȱȱǰȱȱŘŜȱȱǻŞȱǼȱȱȱȬ ȱȱȱ ęȬȱDzȱ¢ȱȱȱȱȱȱȱȱǻŗşśřǼǯȱȱ¢Ȭȱ to very pale orange, light-gray to medium-light-gray, and brownish-gray fetid limestone ȱȱȱȱȱȱDzȱ¢ȱȱ¢ȱȱDzȱ ȱȱȱ¢ǯȱȱ Ȭ¢ȱ ȱ ¢Ȭȱ Ȭǰȱ ęȬȱ Ȭȱ ĵȱ ȱ ȱ ǯȱȱȱ¢ȱȱȱǰȱȱȱȱ¢ȱ¢ǯȱȱȱŗŜŚȱȱǻśŖȱǼȱǯ Proterozoic Glorieta Sandstone (Lower Permian)—(Shown in cross section only). Description from Myers ȱǯȱǻŗşŞŜǼǯȱȬ ǰȱ¢Ȭǰȱȱ¢ ȬǰȱęȬȱȬǰȱ Ȭȱĵȱǯȱȱ¢¢ȱȱěȱȱ¢ȱȱDzȱȱȱȱȱŗŖȱȱ ǻřȱǼȱǯȱȱȱȱ ȱŗśŖȬŗşŖȱȱǻŚŜȬśŞȱǼǯ Priest pluton (1427± 10 Ma, Bauer, 1993)— (Shown in cross section only). Homogeneous porphyȱ ĵȱ £ȱ ȱ ǻȱ ȱ ǰȱ ŗşşşǼǯȱ ȱ ȱ ȱ ¢ȱ ȱ ȱ ǰȱ Ȭǰȱ ĵȱ ȱ ¢ȱ ȱ ȱ ǰȱ ǰȱ ǰȱǰȱ¡ǰȱǰȱ£ȱȱȱǻȱȱǰȱŗşşşǼǯȱȬȱ¢ȱ ȱ ȱ ȱ ȱ ȱ Śȱ ȱ ȱ ȱ ȱ Ŗǯśȱ ȱ ŗȱ ǯȱ ȱ ȱ ȱ ¢ȱ ǰȱȱȱ£ǰȱȱȱȱŘȱȱȱȱęǯ Ypp Undivided Yeso Formation (Lower Permian)—(Shown in cross section only). Description ȱ¢ȱȱǯȱǻŗşŞŜǼǯȱȱȱȱDzȱ ȱ¢Dzȱȱ¢ Ȭ¢ȱ gypsiferous limestone and sandstone. Proterozoic Undivided Xu Joyita Sandstone and Canas Gypson Members of the Yeso Formation (Lower Permian)— ǻ ȱ ȱ ȱ ȱ ¢Ǽǯȱ ȱ ȱ ¢ȱ ȱ ǯȱ ǻŗşŞŜǼǯȱ ¢ȱ ȱ ȱ ¢ȬȱȱȬȬ ȱȱȱęȬȱDzȱ ȱȱȱ ¢ȱ ȱ ȱ ȱ ȱ ¢ȱ ȱ ǯȱȱ ŗŘŖȱ ȱ ǻřŝȱ Ǽȱ ǯȱȱ ȱ ¢ȱ ȱ ¢ȱ ¡ȱ ¢Ȭ ȱ ¢ȱ ȱ ȱ ȱ ȱ ¢ȱ ȱȱȱȱǯȱȱȱ¢ȱȱ¡ȱȱĜ¢ȱȱȱȱȱȱȱȱȱǰȱȱȱȱȱ¢ȱ¢ȱȱ ȱ ȱȱȱǯȱȱ¢ȱȱȱȱŘŚŖȱȱǻŝŚȱǼȱǯ Includes units listed below. Los Pinos Granite—Pink (weathers red), massive, medium- to coarse-grained, microcline + ȱƸȱĵȱƸȱȱǯȱȱ ȱȱǯ Xlp Blue Springs Upper Schist—ȱȱ ǰȱȱƸȱȱǯȱȱȱȱȱȱȱȱ£ȱȱǻŘǼȱ¢ǰȱȱȱȱȱȱȱȱȱite (Xlp) in the eastern region of the quadrangle. Equivalent to the Metaclastics Series pCm of ¢ȱȱ¢ȱǻŗşŝŚǼǯ Xbsu Torres Member of the Yeso Formation (Lower Permian or Leonardian)—(Shown in cross ȱ¢Ǽǯȱ¢ȱ¡ȱ¢ȱ ȱȱȱǯȱȱ¢ȱȱȱ ȱ ȱ¢ȱȱ¢ǯȱȱȱȱȱȱȱśȱȱǻŗǯśȱǼȱȱȱ ȱ Ȭȱ¢ǯȱȱȱȱȱȱȱȱȱ¢ǯȱȱ ȱŗŖŖȱȱǻřŗȱǼȱ¡ȱ ȱȱȱȱDzȱȱȱȱȱȱǯȱȱ Blue Springs Rhyolite—ȱ ȱ ȱ ȱ ¢ȱ ȱ ȱ ĵȬȱ ȱ ȱ stripes within darker layers. Interpreted as a metarhyolite due to the presence of potassium feldspar in the felsic lenses and a geochemical composition close to rhyolite. Equivalent to the part ȱǰȱȱȱȱ¢ȱȱ¢ȱǻŗşŝŘǼDzȱȱȱĵȱǻŗǼȱȱȱǻŗşŞřǼǯ Xbr Mesa Blanca Sandstone Member of the Yeso Formation (Lower Permian or Leonardian)— ǻ ȱ ȱ ȱ ȱ ¢Ǽǯȱ Ȭǰȱ ęȬȱ ȱ ȱ ǯȱ ȱ Ȭ¢ǰȱȬǰȱȱ ȱȱ ǯȱȱȱȱȱȱȱȱ ȱ ȱȱȱȱȱǯȱȱȱȱȱȱȱǯȱȱ About 250 feet (76 m) thick. Blue Springs Schist—ȱȱ ǰȱȱƸȱȱƸȱĵȱƸȱȱǯȱȱ ȱ ȱȱǯȱȱȱȱȱȱǰȱȱȱȱ¢ȱȱ¢ȱǻŗşŝŘǼȱ ȱȱȱĵȱǻřǼȱȱȱǻŗşŞřǼǯ Xbs ȱ ȱ ĵȱ ȱ ǻȱ ȱ ȱ Ǽȯ¢Ȭǰȱ Ȭȱ ĵǰȱȱ ȱȬȱȱȱĵȬȱǯȱ¢ȱȱȱȱȱȱ ȱȱȱȱȱ ȱȱȱ¢ȱȱ¢ȱǻŗşŝŘǼDzȱ ȱȱȱȱȱǻŗǼȱ¢ȱȱǻŗşŞřǼǯ Xbq Abo Formation, undivided (Lower Permian or Leonardian and Wolfcampian)—Overall ęȬȱȱ ȱȱȱȱȱǻǼǰȱȱȱȱȱȮȱȱȬȱ ȱȱȱęȬȱǯȱȱȱȱȱȱȱsional granule conglomerate interbedded with siltstones and mudstones. Weathers light red and pale reddish brown, with local white and green oxidation/reduction spots. Cross laminae, ripple-marks, mudcracks and interbedded paleosols observed. Fossil plant debris and some ȱǯȱȱȱŘŖȬřŖȱȱǻŜȬşȱǼȱȱ ȱȱȬȱȱȱȱȱǯȱȱȱȱȱŚŘŖȱȱǻŗŘśȱǼȱȱŝŝśȱȱǻŘřśȱǼǰȱ ȱȱŚśŖȱȱǻŗřŝȱǼȱȱȱȱȱǯ ȱ ĵȯ¢Ȭǰȱ ǰȱ ȱ ĵǯȱ ȱ ȱ ȱ ¢ȱ ȱ ȱǯȱȱȱ£ȱȱȱ¢ȱęȱȱȱǯȱ¢ȱȱȱ ȱ ȱ ǯȱ ȱ ¢ȱ ȱ ȱ ȱ ȱ ȱ ȱ ĵȱ ȱ ¢ȱ ȱ ¢ȱǻŗşŝŘǼǰȱȱȱȱȱĵȱŘȱǻ ŘǼȱȱȱǻŗşŞřǼǯ Xsq Estadio Schist marker unit—Coarse-grained, staurolite + garnet + biotite schist. Shows multiple episodes of deformation and contains local crenulation cleavage and at least three generations of foliation. Probably originally deposited as a mudstone layer within the sandstone. Equivalent to ȱ ȱȱȱȱȱ ȱȱȱ¢ȱȱ¢ȱǻŗşŝŘǼDzȱȱȱȱȱ ȱǻ ŗǼȱȱȱǻŗşŞřǼǯ Xes Abo Formation, lower unit (Lower Permian or Leonardian and Wolfcampian)—Base of unit at top of uppermost laterally extensive marine limestone of the Bursum Fm. Basal contact is ¢ȱ¡ȱȱ¢ȱȱȱǯȱȱȱȱȱȱȱ darker in color than the upper portion of the overlying Abo Formation, weathers dark purple to dark reddish brown and is coated by abundant desert varnish. Contains poorly sorted medium- to coarse-grained, cross-bedded, thick-bedded sandstones (arkosic wacke to wacke) to granule conglomerates. May contain calcite cement. Sandstone beds are more laterally ȱȱȱȱ¢ȱȱǯȱȱȱȱ¢ȱȱŗŖȱȱ limestone clasts. Rare thin lenses of thin (<20 cm thick) nodular bedded, poorly exposed, ȱǻȬǵǼȱȱȱȱǯȱȱȱȱǻǀśŖȱǼȱȱ¢ȱȱ in the southeastern portion of the quadrangle, but is thicker and more pervasive in the Scholle ǯȱ ȱ ȱ ȱ ȱ ¢ȱ ¡ȱ ȱ ȱ ȱ ȱ ȱ ȱ ȱ ȱ ȱ ǻȱȱǰȱŘŖŖŚǼǰȱȱŞŖȱȱȱȱ ǯ ȱ ȱ ĵȯCoarse-grained, impure, orange to gray, thinly-bedded, aluminous ĵǯȱ ȱ ¢ȱ ȱ ¢ȱ ȱ ȱ ȱ ȱ ȱ ǯȱ ȱ Ȭȱ ȱȱȱǯȱȱȱȱȱȱȱȱȱȱȱǰȱȱ Ƹȱǰȱǰȱȱ¢ǯȱȱȱȱ ȱȱȱȱȱ ȱȱȱ¢ȱ ȱ¢ȱǻŗşŝŚǼDzȱȱȱĵȱŘȱǻ ŘǼȱȱȱǻŗşŞřǼǯ Xwq Abajo Schist—ȱ¢ȱȱȱ¢ȱȱ¢ȱ ȱęȱȱȱȱĚ ǯȱȱȱ¢ȱȱȱȱȱǰȱȱȱȱ ¢ǯȱȱȱȱȱȱǯȱȱȱ ȱȱ ȱȱȱȱȱ ȱȱȱ¢ȱȱ¢ȱǻŗşŝŚǼǯȱȱȱȱȱǰǰȱȱȱǻŗşŝŜǼȱȱ ȱȱȱ ȱǻŗşŝŜǼǯ Xs Bursum Formation of the Madera Group (Lower Permian)—ȱȱȱęȱȱmost well-exposed bed of cherty limestone from IPm-5, which is typically overlain by <5 m of ȱ ȱ¢ȱŗȬŘȱȱȱȬȱȱȱȱ ȱȱĴȱ contact. In northern quarter of quadrangle, basal sandstone thins and is eventually replaced ¢ȱ ¢Ȭ ȱ ȱ ǯȱ ȱ ȱ ȱ ¢ȱ ȱ ȱ ȱ ǻȱ Ȭ¢ȱ Ǽȱ ȱ ȱ ǻǀȱ ŘǼȱ ȱ ȱ ȱ ȱ ȱ ȱȱȱǯȱǻ¢ǰȱŗşŝŝǼǰȱę¢ȱȱȱǰȱȱǰȱ ȱ¢£ǰȱǰȱȱǰȱȱȱȱȱȱǻǀŘȱǼǯȱȱȱȱ ȱ ȱ ȱ ȱ ȱ ęȬȱ Ȭȱ Ȭȱ ȱ ǻȱ ȱ arkosic wacke and arkose) that may contain calcite cement, occasional granule-pebble ǰȱ ȱ Ȭǰȱ ȱ ȱ Dzȱ ȱ ȱ ȱ ȱ ȱ ¢ǯȱȱȱȱȱȱȱ Ȭȱȱ¢Ȭ¡ȱǀȱŗŜȱȱǻśȱǼȱȱȱ¢ǰȱȱ ǰȱǰȱȱȱȱǻȱ Ǽȱȱȱȱǻŗȱȱ thick) stringers of red sandstone, bivalves, crinoids, fenestrae, and fusulinids (Scwagerina ȱ Ǽȱ ǯȱ ǻ¢ǰȱ ŗşŝŝǼǯȱ ȱ ȱ ȱ Ȭ ȱ ȱ Dzȱȱ ȱȬ¢Dzȱȱȱȱ ȱǯȱȱŗśŖȱȬȱŘśŖȱȱ (46-76 m) thick. Abajo Lithic Arenite—Composed of a variety of metasedimentary rocks including meta-pelites, Ȭȱ ȱ ȱ ĵǯȱ ȱ ȱ ȱ ǰȱ ȱ ȱ ĵȱ ȱ ȱ ¢ȱȱ¢ȬDzȱȱǰȱĵȱȱȱ¢ȱǯȱȱ¢ǰȱ garnet staurolite schist and may be related to the intrusion of gabbroic dikes (now amphibolite). Compositional layering (S0) is commonly preserved and is generally at low angle to dominant ¢ȱǻŗǼǯȱȱȱ ȱȱ ȱȱȱȱȱǻŗşŚşǼȱȱȱ ȱȱ ȱȱȱ ȱȱȱ¢ȱȱ£ȱȱ¢ȱȱ¢ȱǻŗşŝŘǰȱŗşŝŚǼǯȱȱ ȱȱǰǰȱȱȱǻŗşŝŜǼȱȱȱȱȱ ȱǻŗşŝŜǼǯ Xla Amphibolite—ȱȱȱǰȱęȬȱȬȱȱ ȱ¢ȱȱȱ macroscopic white plagioclase that ranges in texture from salt and pepper to smeared-out shear ǯȱȬȱȱȱȱ¢ǯȱęȱȱȱȱ ȱȱȱ ŗśŖȱȱȱ¢ȱǰȱǰȱȱȱȱȱȱǯȱȱȱȱȱȱȃȱ Ȅȱȱ¢ȱȱ¢ȱǻŗşŝŘǼǯȱ¢ȱȱȱ ȱȱȱȱȱǰȱ ȱȱȱ¢ȱȱȱȱȱȱǯȱȱȱ ȱȱȱȱȱȱ ¡ȱ ȱȱ¢ȱ¢ȱȱ¢ȱǻŗşŝŘǼȱȱȱȬ¢ȱȱȱȱȱ ȱ¢ȱǰȱŗşŞřǯ Xa Upper Madera Group Formations: Includes *m-5 through *m-2. Middle and upper part of La Casa Member of Myers et al., 1981 (Upper Pennsylvanian -Virgilian)—ȱ ȱ ȱ ȱ ȱ ȱ ȱ ęȱ ěȬȱ ȱ ¢ȱ ȱ ȬŚǯȱ ȱ ěȬȱ ȱ Ȭȱ ȱ ȱ ȱ ȱ ǰȱ ǰȱ ȱ ǻDžřȬŞȱ Ǽȱ ȱ ěȱ ȱ ¢ȱ DžŗŖȬŘśȱ Ȭȱ Ȭȱ ǯȱ ȱ ȱ ȱěȱǻDžŚȱǼȱȱȱȬȱȱǻȱ Ǽȱ ȱ¢ȱ ȱȱȱȱȱȱǻǀŗŖȱȱǼȱȱȱ¢ȱȬȱȬȱ ȱ ȱ Ȭǰȱ ¢ȱ ȱ ǯȱ ȱ ȱ ȱ ǻDžřȱ Dzȱ ȱ ǼȱȱȱȮȱȱȱȱȱȱŘȱǯȱȱȱ ȱǻDžŞȱDzȱȱ ǼȱȱȱȬȱȱ¢ȱȱǯȱȱ ȱ ȱ ȱ ȱ ȱ ȱ ȱ ǰȱ ŗȬȱ ȱ ȱ ȱ ȱ ȱ ȱ ȱȱȱȱ ȱȱǯȱȱȱȱ¢ȱǰȱǰȱ crinoids, brachiopods, and abundant bioturbation. Slope-forming intervals composed of interȱȱȱȱȱǰȱǰȱȱǯȱȱȱȱ ǵȱȱȱǻ¢ǰȱŗşŝŝǼǯȱȱ¡¢ȱŘśŖȱȱǻŝŜȱǼȱǯȱȱ Sevilleta Metarhyolite—ǰȱȬȱȱ ȱĵȱȱȱ¢ǯȱȱ¢ȱȱȱ¢ǰȱ¢Ȭǰȱ¢ȱȱ ȱĵȱȱȱȱDžŗȱȱ ȱǯȱȱ¡ȱȱȱǰȱ ȱȱȱȱȱǯȱȱȱ ǰȱȱȱŖǯŗȬȱśǯŖȱȱĚ ȱȱȱȱǰȱȱȱȱȱ¢ȱȱ ǯȱȱĵȱǰȱȱȱȱȱȱȱȱ¢ȱȱ¢ȱ ȱǯȱȱȱȱĴȱ¢ȱȱȱǻŗşŚşǼȱȱ¢ȱȱ¢ȱ ǻŗşŝŘǼǯȱȱ ȱȱȱȱ¢ǯȱȱȱȱDZ Xsr Pine Shadow Member and lower La Casa Member of Myers et al., 1981 (Upper Pennsylvanian –Virgilian)—ȱȱȱȱȱȱȱȱȱȱȱěȱȱ¢ȱȬřǯȱȱ¢ȱ exposed (slope-forming) unit composed of interbedded sandstone, siltstone, and mudstone with occasional laterally discontinuous limestone beds. A thick sandstone interval (tens of m thick) is present just north of gas pipeline road in middle of quadrangle and southern part of quadrangle. Mud-siltstones contain ripple laminations and soft sediment deformation. Plant debris and Ȭȱȱȱȱȱǯȱȱȱȱȱȱ¢ȱȱȱǻǀŗȱǼȱ ȱȱȱȱ¢ȱ ȱȱǻĵȱǼǯȱȱ¡¢ȱśŜŖȱȱǻŗŝŖȱǼȱ ǯȱȱȱȱ¢ȱ ȱȱȱ¢ȱşȱȱȱȱȱȱȱǻ¢ǰȱŗşŝŝǼǯȱȱ Xsru Upper metarhyolite member— ȱ ȱ ǰȱ ę¢Ȭȱ ȱ ¢Dzȱ ŖǯśȬřǯśȱȱȱȱĵȱ¢ǯ Xsrm Middle metarhyolite member—ȱ ¢ȱ ȱ ǰȱ ę¢Ȭȱ ¢Dzȱ ŖǯśȬŘȱ ȱȱȱĵȱǯ Xsrl Lower metarhyolite member—ȱ¢ȱȱǰȱǰȱę¢Ȭȱ¢Dzȱȱ ȱŗǯŖȬŘǯśȱȱ ȱȱ¢ǯ Xsrh Hornblende schist member—ȱ ȱ Ȭǰȱ ǰȱ ǰȱ Ě Ȭȱ ǯȱȱ ȱȱȱȱǯȱęȱ ȱ¢ȱȱ ǻǰȱǰȱǼȱȱȱ ȱ¢ȱȱȱȱȱǻǼǯ ĵȬȱȱȱǯȱ XYq Sierra Ladrones Formation, deposits of ancestral Abo Arroyo (middle Pleistocene to Pliocene)—Ȭ ȱǻśȱŚȦŚǼȱȱ¢ȱ¢ǯȱȱ¢ȱ ȱȱȱ contains an eroded soil with light reddish-brown to pink (65YR 6/4-7/4) silty clay with Stage Ƹȱȱȱ¢ǯȱȱȱȱȱ¢ȱȱȱȱȱȱȱ ǯȱȱȱȱȱĚȱęȱȱ¢ȱȱȱȱ ¢ȱȬęȱ¢ȱȱȱȱŗȱȱȱ ȱȱȱȱȱȱȱȱȱȱ £ȱȱǻȱȱǯǰȱŗşŞřǼǯȱ SCHOLLE by 2 Amy L. Luther , Karl E. Karlstrom , Lea Ann Scott 1 , Maya Elrick 1 and Sean D. Connell 1 1 NATIONAL GEODETIC VERTICAL DATUM OF 1929 9,300' 1 Department of Earth and Planetary Sciences, University of New Mexico, Albuquerque, NM, 87131 2 New Mexico Bureau of Geology and Mineral Resources, Socorro, NM, 87801 A A' 8,300' New Mexico Bureau of Geology and Mineral Resources 7,300' Open-file Geologic Map 100 COMMENTS TO MAP USERS Mapping of this quadrangle was funded by a matching-funds grant from the STATEMAP program of the National Cooperative Geologic Mapping Act, administered by the U. S. Geological Survey, and by the New Mexico Bureau of Geology and Mineral Resources, (Dr. Peter A. Scholle, Director and State Geologist, Dr. J. Michael Timmons,Geologic Mapping Program Manager). New Mexico Bureau of Geology and Mineral Resources New Mexico Tech 801 Leroy Place Socorro, New Mexico 87801-4796 [575] 835-5490 This and other STATEMAP quadrangles are (or soon will be) available for free download in both PDF and ArcGIS formats at: http://geoinfo.nmt.edu A geologic map displays information on the distribution, nature, orientation, and age relationships of rock and deposits and the occurrence of structural features. Geologic and fault contacts are irregular surfaces that form boundaries between different types or ages of units. Data depicted on this geologic quadrangle map may be based on any of the following: reconnaissance field geologic mapping, compilation of published and unpublished work, and photogeologic interpretation. Locations of contacts are not surveyed, but are plotted by interpretation of the position of a given contact onto a topographic base map; therefore, the accuracy of contact locations depends on the scale of mapping and the interpretation of the geologist(s). Any enlargement of this map could cause misunderstanding in the detail of mapping and may result in erroneous interpretations. Site-specific conditions should be verified by detailed surface mapping or subsurface exploration. Topographic and cultural changes associated with recent development may not be shown. Cross sections are constructed based upon the interpretations of the author made from geologic mapping, and available geophysical, and subsurface (drillhole) data. Cross-sections should be used as an aid to understanding the general geologic framework of the map area, and not be the sole source of information for use in locating or designing wells, buildings, roads, or other man-made structures. The map has not been reviewed according to New Mexico Bureau of Geology and Mineral Resources standards. The contents of the report and map should not be considered final and complete until reviewed and published by the New Mexico Bureau of Geology and Mineral Resources. 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 State of New Mexico, or the U.S. Government. B 10,000 Rio Grande Rift 6,300' *m2 Ps To 4,300' Pyjc Pyt Ps Xa Xs Xsq Pa Pyjc Xwq Pb Pb *m1 P*mu 5,000 QTsp 4,000 Pyt Pa ^d 2,000 Ps Pg Pal 7,000 Py 6,000 Pa Pb Xu Xu &m1 Xwq Xu &m2 Xsrh 5,000 &m3 &m1 Xsq 4,000 *s Xes Xla Xs Xla Xla *s Pa P&mu Xbsu Xsrm 3,000 Xsru Xbs P*mu *s 0 *m1 Pyjc *m1 &m4 Xbr Pal Pb Pb 1,000 Xsrl P*mu Pym Kth Pyt Pym Xsrh Pb Ypp Xu S &m5 *s *s M Qpm3 3,000 P*mu Pa a nz a Pe 8,000 @d a 6,000 Xes Pym *m1 k Xes no To Pal Kth lin Rio Grande Rift Xbr Ps iu or c yn Xs Xs Pym Pg Pyt 8,000 Xbq ^d Kth m Xbr 7,000 Xbs Pg 9,000 Pg Xbr QTsp 5,300' 10,000 *m3 *s 9,000 Xbsu QTsp B' *m4 *m1 Xsq Xbq Xbs East Los Pinos Mountains lt CONTOUR INTERVAL 20 FEET West Xes au 1 KILOMETER Xsq Xsru oF QUADRANGLE LOCATION Magnetic Declination May, 2005 9º 49' East At Map Center 0 an RAYO HILLS 0.5 nz 1 Fau lt CERRO MONTOSO 361000 S ŗȱȱ¢ȱȱǯȱ ȱȱ ŗȱȱȱ¡ǯ no BECKER SW BECKER Becker S 50 3805000 Qca MANZANO PEAK 1000 BLACK BUTTE 360000 359000 ȱȱȱȱȱǯ Ma nza TOME SE 106°32'30"W £ȱǯ Geologic map of the Becker 7.5- minute quadrangle, Valencia and Socorro Counties, New Mexico 1:24,000 TURN 358000 Qae Qay ! ! 106°37'30"W 352000 351000 ȱǯ e ! S S Qp ! ! S Pla Pb ! ! S o 55 ^d ęȱȱȱȬȱ ȱȱ¢Ȯȱȱ¡ȱȱ ȱȱ Dzȱȱ ȱ¡¢ȱǯȱ af Pla 6 ! 70 50 60 45 60 Xbr 66 Qay ȱȱȱȱǯ 60 Qp ! Xes Qa Qay ! 56 60 ! 55 60 Qay Kth ! 50 ! 55 56 45 85 XYq 3806000 ! Xa Xs 66 71 49 Xsq 45 XYq 52 ȱ¢Ȯȱȱ¡ȱȱ ȱȱȱ Dzȱȱ ȱ¡¢ȱǯȱ 60 ! Xla XYq Xa XYq 41 54 45 ! I o o Qp 9 50 ! Qp 80 56 ST43 ! ȱȮȱ ȱ¡¢ȱȱȱDzȱ Ĵȱ ȱDzȱȱ ȱȱȱ¢ȱ ǯȱȱȱ ȱȱȱȱȱDzȱȱ ȱȱȱ ȱȱȱȱȱǯȱȱ ȱȮȱȱ¡ȱȱ ȱȱȱ ǯȱ ! Xlp 85 85 60 45 ! Xsrl XYq 63 Xbr XYq 50 Xwq 66 48 56 69 60 86 I 72 XYq ! Xlp I Xa Xa ¨ 85 75 68 ((( Qa Qpm Qca 87 61 86 ¦ ¦ 3805000 66 o o o o 65 Xlp 82 XYq 66 46 ! Qpm2 55 ¦ 44 70 74 Xa 26 55 S Pb Qa ! ) Qp 85 88 76 80 XYq XYq 54 Xa S46 Qca 48 50 oo 75 76 64 ¦¦¦ Xsrl 27 55 19 3807000 ! 85 Xs ((( 78 XYq 55 30 3 75 54 30 XYq ! Qa 70 17 39 36 35 82 76 75 26 XYq 54 75 B’ 85 20 28 42 XYq 55 Ü 79 ¦ 81 ) )) o 76 65 65 Xs Xes Xa 50 84 Xs 6 : Piedmont alluvium, younger subunit (middle Pleistocene)—Pink to brown (7.5YR 7/4-5/4), poorly sorted, moderately consolidated pebble to cobble conglomerate and ¢ȱǯȱȱȱȱȱȱȱȱȱȱȱȱȱȱȱŗȱȱŘǯȱȱ¡ȱ¢ȱȱ ¢ȱȱȱȱȱ ȱȱ¢ǯȱȱȱȱȱŗǯśȱȱǯ Volcanic and volcaniclastic rocks, undivided—(Shown in cross section only). White to Ȭ¢ǰȱ ¢ȱ ȱ ¢ȱ ǰȱ ¢ȱ ǰȱ ęȬȱ ȱ ¢ȱ ȱ ȱ ȱ Ĵȱ ȱ ȱ ȱ ǯȱȱ ȱ ȱ ¢ȱěȱȱȱȱȱȱĚ ǯȱȱȱȱȱȱȱ ȱȱȱȱȱȬȱȱęǯȱȱȱȱȱřśŖȱȱǯ Mesozoic Tributary Stream Valley Alluvium &m5 o t 61 29 45 3808000 o 66 T 42 53 Xa Xa 45 45 61 Xs ¨ ¨ ¦ 65 88 64 Xa Xa o XYq Geologic contact–Dashed where approximately located or DzȱĴȱ ȱȱ¢ȱ¢ȱǯ ! o 87 62 70 48 XYq 35 55 Xa XYq 52 60 Xs 61 73 I 55 Xsru 82 Xa Xsrh 81 35 ! 5 o af 84 85 S XYq 66 80 ¦ 50 56 53 67 ! 60 88 Xbsu Xs ! 45 XYq Geologic Cross Section 84 o 75 55 84 Xsrh 40 XYq 25 30 A' J 27 Qpo Explanation of Map Symbols o¦ o Xs P Qpy 3806000 ¦ 72 Xa Xsrm 61 85 79 53 43 29 Qpm1 &m5 45 81 46 Xs 66 ) 78 60 49 XYq 80 83 68 54 88 84 65 Xsrh ¦ ¨¨ Qpm1 ¦ Xsrh 46 50 65 79 Qca 87 ¨ Qa 75 XYq 56 Xa )) ! ! ! 84 XYq 50 75 ¦ ! Qp Qpm1 Qca ! Qa Qpm1 84 70 60 I 39 ) ))) o o oo 59 40 ((( Qpm2 81 80 79 ¦ Qpm 76 63 41 46 Pa A o ¦ Qpm2 ! af Xsrh s 3807000 80 84 50 Xs Py Pym *m4 58 XYq 48 P ! ! Qpo af 79 ))) ) Qa ! ! Qa 89 Xs Xla 56 Xbr Pyt 3809000 Xsq 25 Xa Xa XYq 71 Xa 75 75 ! af Qp ¨ Qpm Xsrm Xsq Xwq 85 78 Xa 88 31 Qpm2 &m3 Xbs XYq 53 34 50 Pyjc o 66 41 65 Xa 53 Pg 64 &m2 Piedmont alluvium, intermediate deposits (middle Pleistocene)—Pink (7.5YR 7/4), poorly ǰȱ¢ȱȱȱȱȱȱȱ¢ȱǯȱȱȱ broad alluvial fans whose toes are commonly buried by younger piedmont alluvium. Base not exposed. Commonly buried by younger piedmont and stream-valley alluvium from the Man£ȱ ȱ ȱ ȱ ǯȱ ȱ ȱ ¢ȱ ȱ ȱ ȱ ȱ ȱ ȱ ȱ ȱ surface morphology and inset relationships. Ps 34°25'0"N 45 42 Piedmont alluvium, younger deposits (upper Pleistocene to Holocene)—Ȭ ȱ ȱ brown (7.5YR 5/4-6/4), weakly consolidated, poorly sorted, pebbly to cobbly sand and gravel. Deposits commonly contain matrix-supported gravelly sand with clast-supported gravel lenses. Beds are commonly 30-50 cm in thickness and form a stack of sand and gravel that commonly have scoured basal contacts and buried, weakly developed soils exhibiting Stage I pedogenic carbonate morphology. Deposits are at least 2 m thick and typically overlie older, paler colored, alluvium containing well developed calcic soils. Forms slightly to moderately dissected surfaces. Deposits are inset against intermediate piedmont alluvium of unit Qpm. Deposits are commonly overlain by a thin, discontinuous veneer of brown eolian sand. Qpm3 Qls 5 ³ 78 70 Qpm3 64 70 ) 52 Xs XYq )) 50 XYq 15 o 65 77 78 Xa Xa 55 40 40 40 P Qpm3? S76 73 59 76 87 Xsrl ¦ 70 o o o ¦ 49 40 3810000 o *m2 Xbs 38 XYq 65 S 45 Xa 40 45 55 60 30 55 40 85 55 50 &m5 o 75 XYq 59 S ))))) 85 Xsrh 70 ¨ 3808000 55 71 89 t 84 50 65 35 85 *m1 58 e 25 Qpm ³ o Ü vvo Ü Ü u Xsrl ) )) ) )) ) 61 ) 80 Xs 50 Qca Xsru 45 54 66 o 83 Xsrh 77 ¦ 70 68 Xs 70 ÜÜ Xsrl 84 85 84 65 49 70 Xs u 54 Ü Qpm3 XYq 56 Xsrh 55 87 Qpm3 ! Qa 70 64 S Xsrm 74 ! 70 50 70 ! Qpm2 Xsrh XYq 36 Xes oo Xsrm Qpm2 ! Qpm2? 65 I Ü Ü Ü 70 ! Qpm1 Qp 40 XYq o o Qpy ? S Xsrh ST o o B XYq 41 15 :o Qpm3 ? J ? ? 51 43 77 70 &m4 o ? ? ? 75 16 14 o Qpm3 34°25'0"N ¦ 73 70 T ! 74 o¦ Xsrm ¨ ? ? 3809000 XYq Xa I Qpy ¦ 41 Qca o ? Xsrh Xsru T XYq P Qpy 36 30 &m3 96 38 69 68 58 55 42 Xa 45 o ! Qpm1 &m4 ³ ! XYq 48 XYq 45 &m1 ³ ! Xa 72 64 XYq 61 Xsrh Qpm1 I ))) 45 Xsrm Xsrh Xwq )) Qay 55 17 oo Qpm1 Qay Qpm1 ^c 50 o o Xsq 60 30 &b? 50 ³ ! 50 : ³ Xla Qpm1 Qa &m4 Xsru 78 Xsru ! 71 ³ 75 70 Xbr 3811000 15 o Qpm3 af Qay P Xsrm ¦ 3811000 &m3 &m2 70 Xsrh Xsrh ! 55 Xsru Xsrh ! ! ! 45 o o ! Qls Permian Xsru ! Qpa o o o oS ¦TS ¦S ¦ ¦ ¦ ¦oo¦¦ o o ¦¦ ¦ ¦ ¦ ¦ ¦¦ ¦ ¦ ¦ ¦ ¦ S o ¦ ¦ o ¦o ¦ ¦ ¦ ¦ ¦¦S ¦S ¦S ¦ ¦ ¦ ¦ ¦ o o o oT ¦ o o ¦ ¦S ¦ s¦S ¦s¦ ¦ ¦ ¦ ¦¨ ¦ ¦S ¦ S ¦ ¦ o o ¦ ¦¦ oo ¦ ¦¦¦ ¦ ¦ s s ¦ ¦ ¦ ¦ ¦¦ ¦S ¦ ¦ ¦ ¦S ¦ ¦¦ ¦ ¦ ¦)S) ) ¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦ o o ¦ ¦ ¦ ¦ o ¦ ¦ ¦ ¦ ¦ o ¦ ¦ ¦ ¦ ¦ ¦ I o ¦ ¦ ¦¦ ¦¦ ¦ o o¦ ë ¦ ¦ s ¦¦ ¦ s s s ¦ o o o s) s o ëo ¦ ¦ o sS o¦¦ o oo ¦ S ) s s ¦ ¦¦ oo ¦ ¦ ¦¦¦ ¦ ¦ ¦S ¦S¦ ¦ ¦ ¦ ¦ ¦o o ¦ ¦ oSoo ÜÜo ¦ ¦ ¦ s o ¦ ¦ o o ¦ o ¦ s Ü Ü ¦ o ¦ o ¦ o o S ooS ¦s¦ s s¦ ¦ ¦ ¦¦ ¦S ¦S o S ¦ s ¦ ¦ ¦ o ¦ S ¦ ¦ ¦ ¦o I¦ o o s s s ¦¦ s ¦ s ë ¦ S o oS ¦ s o o o ¦ o o o ¦ o o o ¦ o ¦¨¦ ¦ o ¦ oT o ¦ o s ¦ ¦ ¦ o ¦ ¦ ¦o o ¦¦ ¦ o o o ¦ ¦ ¦ ¦ ¦ s ¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦¦ ë o ¦¦ o s ¦o oo ¦ ¦ ¦ ¦ s ¦ ¦ o ¦ s ë o o M ¦ ¦ ¦¦ s S ¦ ¦ ¦ o ¦ ¦ ¦ S ¦ o o o o o o o ë BB ¦ ¦ o o o BBBB ¦ o o o ¦ë s ë s ¦ ¦ o T o s ! &m4 33 o Qpm1 ! ! o 35 ! Qca 15 &m3 Kth Lower(Wolfcampian/Leonardian) o ! ! ! ! 3812000 : ! ! ! 34 &m1 &m2 40 ! Qay : : o ! &m4 &m3 : Qa *m4 8 Upper Cretaceous ! ! ! ! ! ! &m3 o 3812000 3810000 10 e 35 ! Qa 5 o Xbr ! Qay *m2 M ! ! ³ ! ! Qae o To F ! Qay *m1 Qpy Upper Triassic ! ! 30 Xbq 21 PALEOZOIC ! Qpa 24 &m3 MESOZOIC ! &m3 Tertiary M v os o v 45 ! ! Qay o ! ! ³ ! ! Xbr &m1 &m4 ! Qay Xbs ! ! ! Xsq ! Qay o o Qay ! Qpa Qpa ! Qpa Qp Xsrh ! ! Qpa 3813000 Xsr Xsrl 3813000 Qaa Abo Arroyo alluvium, oldest piedmont-slope alluvium (middle or lower (?) Pleistocene)— ȱǰȱȬȱȱ¢ȱ¡ȱȱȱȱȱȱ of the Abo Arroyo valley. Reddish-brown to light-brown (5YR 4/4 to 7.5YR 6/4) pebble to ȱȱǻǀȱŘśȱȱǯǼȱȱȱȱȱĵǰȱ ȱ ǰȱ ǰȱ ȱ ȱ ǰȱ ȱ ǻȱ ¢ȱ ĴǼȱ ǰȱ ȱ ¢ Ȭ ȱĵȱǯȱȱ¢ȱȱ ȱŗȬŚȱȱȱate rinds, suggesting the presence of at least Stage III+ pedogenic carbonate morphology. ȱȱȱȱŗŞȱȱȱȱĚȱȱȱ¢ȱȱȱ¢ȱȱǻǀśŖȱǼȱ ȱȱ ȱǻŝǯśȱśȦŚǼȱęȬȱȱȬȱ¢ȱȱ¢¢ȱȱ ȱĴȱǯȱȱȱȱ¢ȱȱȱȱȱ¢ȱȱ¢ȱȱȱȱȱ ȱȱ£ȱȱȱȱȱǯȱȱ¡ȱȱĚȱȱȱ Arroyo at western margin of map area, where it is 4.5 m thick. Piedmont alluvium, undivided (Holocene to Pleistocene)—ȱȱǯȱ Surface contains weakly developed soils with Stage I carbonate morphology and bury older ǯȱ¢ȱ£ȱȱ ȱȱǯȱȱȱȱ¢ǰȱȱȱ ȱ ȱ ȱ ĵȱ ȱ ȱ ȱ ȱ ǯȱ ȱ ȱ ǰȱ ¢ȱ ȱ ĵȱȱȱǯȱȱȱ¡ǯ ! Qae 30 Abo Arroyo alluvium, older subunit of intermediate terrace deposit (middle Pleistocene)—Pink to pinkish-white and reddish-brown (7.5YR 7/4-8/2 & 5YR 5/4), ȱȱȱǯȱȱȱȱȱȱȱ¢ȱȱȱ£ȱȱ low-lying gravels that sit about 2 m above the top of the intermediate terrace deposit (Qaam). Soils are well developed and exhibit at least Stage III pedogenic carbonate ¢ǯȱȱ¢ȱȱȱȱŗȬřȱȱȱȱǯȱ To Ȭȱ Xsrm &m5 ³ Qay Qay Xsru &m3 ! Qay 61 Xbq 36 Qpy ! Qa ! ! ! ! 72 ! Qaam Qaam ! Qa ! Qay 64 ! Qaam Xbr Xbs 78 ! Qpa Qay Qaam Qaamo 61 Xa 82 86 ¦ QTsp Xs QTsp 78 o ¦ ¦ ¦ ! ! ! ! Qaam ! Qaam Xbs 74 Xwq P Qaamo Qaam Xbq 30 Xu Xla 000 J Qaamo Qaay ( 34°27'30"N Xbr Schistose (( Qaay ! Qaay J Qaa Qpa Xes 77 74 ! ! Qaa Qaamo Xsq Pliocene Qay Abo Arroyo alluvium, intermediate terrace deposit (late Pleistocene)—Ȭ ȱǻŝǯśȱ ŜȦŚǼǰȱȱȱȱ¢ȱǯȱȱȱ¢ȬǰȱęȬȱȱ¢ȱȬȱǯȱ ȱ ȱ ǰȱ ȱ ȱ ȱ ŗŖȱ ȱ ȱ ȱ Ěȱ ȱȱ¢ǯȱ ¢ȱȱȱ¡ȱȱȱȱȱȱȱȱ¢ǯȱȱȱ¢ȱ subdivided into a slightly older deposits based on inset relationships. Base not exposed, but ȱȱȱȱŗȱȱǯ Xbq ¦ ! 65 51 o Qay Qaa 3814000 Xbr Lower ¦ A’ ¦ ¦S ¦ o 3814 o oI o o o o 34°27'30"N vv o o o o o ¦ ¦ ! Qaam Qpy ? ? Xbsu ! Qay Qaam XYq Xlp Qpo ! Qaam Qa ? ? IPs Qpm2 Xbsu F Qpa Qaam IPm1 Abo Arroyo alluvium, younger terrace deposit (Holocene to latest Pleistocene(?))— Ȭ ȱǻśȱśȦŚȬŚȦŚǼǰȱȬǰȱęȬȱȱȬȱ¢ȱȱȱ¢ȱ ȱ Ĵȱ ȱ ȱ ȱ ǯȱ ȱ ȱ ȱ ȱ ȱ ¢ȱ Ĵȱ ȱ ȱ ¢ȱȱ ȱȱȱ ȱȱȱȱ¢ǯȱȱȱǰȱ lying terrace about 2 to 3 m above local base level. Very weakly developed soil with weak ęȱ ȱ ȱ ȱ ȱ ¢ǯȱ ȱ ȱ ȱ ¢ȱ ¡ȱ ȱ mouth of Abo Canyon, where it is up to 3 m in thickness. Xbs ! Qa Qaay PIPum IPm2 Qpa 3815000 P ¶ ! Qpy IPm3 Ypp ! Qay IPm4 73 88 ! Qpm IPm5 Qpm1 ¦ ¦ Xbr Pal Abo Arroyo alluvium, active (upper Holocene to historic)—Brown to reddish-brown (5-7.5YR 5/4), moderately-sorted, clast-supported, pebble- to cobble-gravel. Contains cobble and boulder bars that are approximately 20 m wide and 40-50 m long. Deposit contains Ĵȱȱȱȱȱŗȱȱ¡ȱǯȱȱȱ¢ȱȱ ĵȱȱȱ ȱȱȬ ȱȱȱȱȱlies active drainage of Abo Arroyo. No soil development, but deposit contains disseminated calcium carbonate. Base not observed. ! Xbs Qaa Pb PRECAMBRIAN Qay 3815000 Qpm3 Qpm Qpm Qae Middle Qpa Oligocene Alluvium of Abo Arroyo Basin Fill & other Qaa Qa A Piedmont Slope ȱȱ Quaternary Ma 34°30'0"N 34°30'0"N 354000 353000 352000 351000 NEW MEXICO INSTITUTE OF MINING AND TECHNOLOGY Upper Middle (Atokan/Desmoinesian) (Missourian/Virgilian) 106°37'30"W A DIVISION OF Permian NEW MEXICO BUREAU OF GEOLOGY AND MINERAL RESOURCES 2,000 Xsrm Xa Xs Xlp Xa Xwq Xa Xsrh Xsrl 1,000 Xsru 0
