New Open-file Report 190 Mexico Bureau of Mines and Mineral Resources HYDROGEOLOGIC CROSS SECTIONS OF THE MESILLA BOLSON AREA, DONA ANA COUNTY, NEW MEXICO AND EL PAS0 COUNTY. TEXAS John W. Hawley, Senior Environmental Geologist New Mexico Bureauof Mines and Mineral Resources Socorro, NM 87801 1984 APPENDICES A and C pages 147-157 from Peterson, D.M., Khaleel, R., and Hawley, J. W., 1984, Quasi three-dimensional modeling of groundwater flow in the Mesilla Bolson, New Mexico and Texas: New Mexico Water Resources Research Institute, Technical Completion Report, Project No. 1345645, WRRI , Report No. 178, 185 p. HYDROGEOLOGIC CROSS SECTIONSOF THE MESILLA BOLSON AREA, DONA ANA COUNTY, NEW MEXICO, AND EL PAS0 COUNTY, TEXAS John W. Hawley, Senior Environmental Geologist New Mexico Bureauof Mines and Mineral Resources The purpose of this phaseof research on numerical modeling of groundwater flowin the lowerRio Grande basinof New Mexico (Khaleel et all 1983; in progress) is to illustrate the hydrogeologic framework of the Mesilla Bolson utilizing all available surface and subsurface information. Emphasis is on physical properties of the intermontane-basin fill related to storage and transmission of ground water, and on the structural and lithologic properties of rock units forming basin boundaries. Information is presented in a combined surface-mapand crosssection format (Plates 1 to 16) in order to provide 3-dimensional hydrogeologic models that interface directly with numerical models developed for the hydrologic phase of the study. Basic map scale (1:125,000) and cross-section dimensions (1:l and 10:1 vertical exaggeration) conform with mapand section formats used in ongoing hydrologic and geologic investigations by the U.S. Geological Survey, New Mexico State Engineer,and New Mexico Bureau of Mines and Mineral Resources (Wilson and others, 1981; Seager and others, in press). Any valid characterization of bolson hydrogeology must be based on the best possible understanding of the local geologic framework, particularly in the context of relatively recent geologic history, since the major water-bearing units are fills of intermontane structural basins of late Cenozoic age. The bulk of these units, and associated confining beds, are components of the Santa Fe Group and include deposits of the ancestral Rio Grande. Recent mapping (summarized by Seager and others, in press) of exposed geologic units and structures is o f excellent quality. However, hydrologic investigations focus on basin- and valley-fill units that are rarely well exposed; and in much of the area, subsurface data from drill holes and geophysical surveys are not available. Therefore, portrayals of bolson hydrogeology (e.g. King and others, 1971; King and Hawley, 1975; Wilson and others, 1981), including materials in this report, should be regarded only as reasonable state-of-the-art models that will be subject to testing and revision. The reference list indicates sources of most of the data used in preparation of cross sections. The only unpublished data used were preliminary welllogs, mainly from files at the Las Crucesand El Paso offices of the U.S. Geological Survey, and some geophysical information. It must be emphasized, however, the interpretations presented in this study are strictly those of the author. Plates 1 to 16 illustrate the major hydrogeologic features of the Mesilla Bolsonand the format used for presenting hydrogeologic information in this ongoing study. Plate 1 is a topographic map view of the area showing location of 1) major basin-range boundary faults, 2) well-control points, and 3) sixteen cross sections that form the basis for hydrogeologic the 1 model. Plates 2 to 9 and 11 to 14 are preliminary versions of twelve transverse sections (AA', BB', CC', DD', ED', FF', GG', GH', JJ', KK', LL', and MM') across the bolson and adjacent parts of the Jornada and Hueco basins. Plate 10 comprises two longitudinal sections (HH' and 11') along the structural uplifts that form the east margin of the Mesilla Bolson; these sections extend from the Dona Anato the Franklin Mountains. Plate 15 is a longitudinal profile (NN') down the Mesilla Valley from north of Las Cruces to south ofAnthony. Plate 16 is a longitudinal section (AN') extending from north to south down the bolson floor west of the Mesilla Valley. The orientation of sections in Plates 15 and 16 is down regional slope and approximately parallel to major ground-water flow lines. The base line of all sections is mean sea level, and geologic information to that depth is given wherever possible. The bulk of hydrogeologic data is from a zone between2,500 ft elevation and the land surface, with the top of the zone of saturation at about 4,000 ft. However, a few well and geophysical control points extend to or below an elevation of 2,000 ft. General distribution patterns of 10 hydrogeologic subclasses of valley and basin fills are shown on Plates2 to 16 (sections with 1O:l vertical exaggeration). These deposits of late Oligocene to Holocene age( < 2 5 million years) are listed in order of decreasing aquifer potential and include six subdivisions that form important aquifers in the Mesilla Bolson area (Plate 1). Units I toIV form the major aquifers of the region and includ deposits of a largefluvial-fan system constructed by the ancestral Rio Grande in Pliocene to middle Pleistocene time ( 5 to 0.5 million years ago). Clean sand or gravelly sand zones are extensive and thick, and have relatively large hydraulic conductivities. Estimated transmissivities commonly exceed 10,000 ft2/day and water quality is good (tds usually <1,000 mg/L). Units V and VI form thinner and less extensive aquifers that are locally important water sources, particularly in the southern Jornada del Muerto Basin. These piedmont-slope and basin-floor alluvial deposits include elongate sandand gravel lenses that arein part transitional to more extensive deposits of the ancestral Rio Grande. Transmissivities locally may be as high as 10,000 ft2/day. Units VI1 to X rarely form aquifers and include fine-grained basin fill (playa and lake beds) and indurated fan-piedmont deposits. Hydraulic conductivities are very low and water quality is usually poor. 2 Selected References Bond, G. N., B oucher, J. H., Eriksen, W. T., Hudson, S. L., and Kaiser, E5. D., 1981, A direct application of geothermal energy at L'EGGS Plant, Las Cruces, New Mexico: U S . Department of Energy, Idaho Operations Office, Report DOE/ID/12047-3. Bryan, Kirk, 1938, Geology and ground-water conditions of the Rio Grande depression in Colorado and New Mexico; in Natural Resources Planning Board, The RiO Grande jointinvestigations in the upper Rio Grande basin: Washington, D.C., U.S. Government Printing Office, v. I, part 2, pp. 197-225. Conover, C. S., 1954, Ground-water conditions in the Rincon and Mesilla Valleys and adjacent areas in New Mexico: U.S. Geological Survey Water-Supply Paper 1230, 200 pp. Doty, G.C., 1963, Water-supply development at the National Aeronautics and Space Agency-Apollo Propulsion System Development Facility, Dona Ana County, New Mexico: U.S. Geological Survey, Open-file Report, 40 pp. Gates, J. S., White, D. E., Stanley, W. D., and Ackermann, H. D., 1980, Availability of fresh and slightly saline ground water in the basins of westernmostTexas: Texas Department of Water Resources, Report 256, 108 pp. Gile, L. H., Hawley, J. W., and Grossman, R.B., 1981, Soils and geomorphology in the Basin and Range area of southern New Mexico - guidebook to the Desert Project: New Mexico Bureau of Mines and Mineral Resources, Memoir 39, 222 pp. Gross, J., and Icerman, L., 1983, Subsurface investigations for the area surrounding Tortugas Mountain, DonaAna County, New Mexico: New Mexico Energy Research and Development Institute, Interim Report NMERDI 2-67-2238(2). Harbour, R. L., 1972, geology of the northern Franklin Mountains, Texas and New Mexico: U.S. Geological Survey, Bulletin 1298, 129 pp. Hawley, J. W., 1969, Notes on the geomorphology and late Cenozoic geology of northwesternChihuahua: New Mexico Geological Society, Guidebook to 20th field conference, pp. 131-142. , 1975, Quaternary history of Dona Ana County region, south-central New Mexico: New Mexico Geological Society, Guidebook to 26th field conference, pp. 139-150. , compiler, 1978, Guidebook to the Rio Grande rift New Mexico Bureau of Mines and Mineral Resources, Circular 163, 241 pp. in New Mexico and Colorado: 3 , 1 9 8 1 ,P l e i s t o c e n ea n dP l i o c e n eh i s t o r yo ft h e I n t e r n a t i o n a lB o u n d a r ya r e a ,s o u t h e r n N e w Mexico: G e o l o g i c a lS o c i e t y ,G u i d e b o o kt oA p r i l1 9 8 1f i e l dt r i p , 26-32. E l Paso pp. H a w l e y , J. W., K o t t l o w s k i , F. E., S e a g e r , W. R., K i n g , W. E., S t r a i n , W. S., a n dL e M o n e , D. V., 1 9 6 9 , T h e S a n t a F e G r o u p N e w M e x i c ob o r d e rr e g i o n : N e w Mexico i nt h es o u t h - c e n t r a l B u r e a uo fM i n e sa n dM i n e r a lR e s o u r c e s ,C i r c u l a r1 0 4 , pp. 235-274. H o f f e r , J. M., 1 9 7 6 ,G e o l o g yo ft h eP o t r i l l ob a s a l tf i e l d ,s o u t h c e n t r a l N e w Mexico: N e w Mexico Bureau o fM i n e sa n dM i n e r a l R e s o u r c e s ,C i r c u l a r1 4 9 , 30pp. J. K e l l e y , S. A., a n d M a t h e n y , P., 1 9 8 3 , G e o l o g y o f A n t h o n y q u a d r a n g l e , Dona Ana County, New Mexico: N e w MexicoBureau Map 5 4 ,S c a l e o fM i n e sa n dM i n e r a lR e s o u r c e s ,G e o l o g i c 1:24,000. J. K h a l e e l , R., P a l u m b o , M. R., P e t e r s o n , D. M., a n dH a w l e y , W., 1 9 8 3 ,N u m e r i c a lm o d e l i n go fg r o u n d - w a t e rf l o wi nt h el o w e r N e w Mexico: N e w M e x i c oW a t e rR e s o u r c e s R i oG r a n d eb a s i n , R e s e a r c hI n s t i t u t e ,P r o j e c tC o m p l e t i o n Rept., P r o j . No. 135465,188pp. King, W. E., H a w l e y , J. W., T a y l o r , A. M., a n dW i l s o n , R. P., 1 9 7 1 ,G e o l o g ya n dg r o u n d - w a t e rr e s o u r c e so f c e n t r a l and w e s t e r n Dona Ana County, N e w Mexico: N e w MexicoBureauof 1, 64pp. M i n e sa n dM i n e r a lR e s o u r c e s ,H y d r o l o g i cR e p o r t Knowles, B.,D. and Kennedy, R. A., 1 9 5 8G , r o u n d - w a t er e s o u r c e s E l Paso,Texas: U.S. o ft h e H u e c oB o l s o nn o r t h e a s ot f G e o l o g i c a lS u r v e y ,W a t e r - S u p p l yP a p e r1 4 2 6 ,1 8 6p p . L e g g a t , E. R., L o w r y , M. E., a n dH o o d , J. W., 1 9 6 2 , G r o u n d - w a t e r r e s o u r c e so f t h el o w e r M e s i l l a V a l l e y , Texas and N e w Mexico: T e x a s w a t e r Commission, B u l l e t i n6 2 0 3 , 1 9 1p p . S a y r e , A. N., a n dL i v i n g s t o n , P., 1 9 4 5G , r o u n d - w a t er e s o u r c e s t h e ~1 P a s o a r e a , T e x a s : U.S. G e o l o g i c a lS u r v e yW a t e r - S u p p l y Paper919,190pp. S e a g e r , W. R., 1 9 8 1 G , e o l o g yo ft h eO r g a nM o u n t a i n sa n ds o u t h e r n S a nA n d r e sM o u n t a i n s , N e w Mexico: N e w MexicoBureauof M i n e sa n dM i n e r a lR e s o u r c e s , Memoir 36,97pp. S e a g e r , W. R., H a w l e y , J. W., K o t t l o w s k i , F. E., a n d K e l l e y , S. A., 1 9 8 4 ,G e o l o g i c map of e a s t e r n h a l f of Las Cruces and n o r t h e a s t e r n p a r t o f E l Paso 1x 20 s h e e t s : N e w Mexico B u r e a uo fM i n e sa n dM i n e r a lR e s o u r c e s ,G e o l o g i c Map 57, Press). s c a l e1 : 1 2 5 , 0 0 0( I n S e a g e r , W. R., and Hawley, K o t t l o w s k i , F. E., 4 J. W., 1976, of Geology of Dona Ana Mountains, New Mexico: New Mexico Bureau of Mines and Mineral Resources, Circular 147, 36 pp. Seager, W. R., and Morgan, Paul, 1979, Rio Grande rift in southern New Mexico, west Texas and northern Chihuahua; in Riecker, R. E. (ea.), Rio Grande rift, tectonics and magmatism: Washington D. C., American Geophysical Union, pp. 87-106. - Strain, W. S., 1966, Blancan mammalian fauna and Pleistocene formations, Hudspeth County, Texas: Texas Memorial Museum, Bulletin 10, 55 pp. Uphoff, T. L., 1978, Subsurface stratigraphy and structure of the Mesilla and Hueco Bolsons, El Paso region, Texas and New Mexico: Unpublished M.S. thesis, The University of Texas at El Paso, 66 pp. Wen, C-L, 1983, A study of bolson-fill thickness in the southern Rio Grande rift, southern New Mexico, west Texasand northern Chihuahua: Unpubished M.S. thesis, The University of Texas at El Paso, 74 pp. Wilson, C. A., White, R. R., Orr, B. R., and Roybal, R. G., 1981, Water resources of the Rincon and Mesilla Valleys and adjacent areas, New Mexico: New Mexico State Engineer, Technical Report 43, 514pp. Wilson, C. A., and White,R. R., 1984, Geohydrologyo f the central Mesilla Valley, DonaAna County, New Mexico: U.S. Geological Survey, Water-resources Investigations Report82555, 144 pp. Acknowledgements. The following persons have freely contributed much valuable information on the geology, hydrology, and geophysical properties of bolson-fill and bedrock units, and their help is gratefully acknowledged: W. R. Seager, W. E. King, F. E. Kottlowski, R. E. Clemons, W. S. Strain, Thomas Cliett, G. R. Keller, Chandler Swanberg, Paul Morgan, Pamela Mack, Shari Kelley, James Gross, Jay Snyder, and R.L. Lohse. Assistance of the U.S. Geological Survey, Water Resources Division, hasbeen very helpful; and special thanks are due to Bob Myers, Brennon Orr and Don White of the Las Cruces and E l Paso offices. This workis d e d i c a t e d t o t h e m e m o r y of ClydeA.Wilson, who headed the U.S.G.S. office in Las Cruces from 1971 'until his untimely death in 1980. This unassuming and highly motivated public servant played the key rolein putting ground-water hydrology and hydrogeology of the Mesilla Bolson area on a sound technical and scientific footing. Clyde's expertise and commonsense approach to water resource investigations are greatly missed. 5 - .. Explanation--Plate 1 Well-Control 700 0 890t '902 2430+ " Q Points Water-well (test or production) with depth indicated; water-level information usually available; sample and/or drillers logs also available for many holes Water-well (test or production) with geophysical log(s); sample and/or drillers logs commonly available; upper and lower members indicate thickness of basin fill and total depth, respectively. Oil test control point,with thickness of basin fill indicated; geophysical, driller, and sample logs usually available Boundary Faults ,Ar High-angle normal fault: bar and ball on downthrown side n *****bee U Buried high-angle normal fault Cross Sections Location of transverse hydrogeologic sections (Plates 2-9, 11-14) *-' f. Location of longitudinal hydrogeologic sections (Plates 10, 15, 16) 6 cross cross .. Explanation--Plates -" 2 to 16 Valley-Fill and Basin-Fill (QTa) Subdivisions Valley-fill unit I. Sand and gravel, with local silt-clay lenses. Upper Quaternary Rio Grande Valley fill. Forms upper pirt of "shallow aquifer" of Leggat et al. (1962) and "floodplain alluvium-of z l s o n et al. (1981). " _ . " Younger basin-fill units (basin-floor fluvial to deltaic facies) 11. Sand, with pebble gravel, clay-silt, and sandstone lenses; partly cemented with calcite. Plio-Pleistocene ancestral river facies; includes upper Santa Fe Gp-Camp Rice Fm fluvial facies. Unit mainly unsaturated: where saturated forms partof major Mesilla Bolson aquifers. 111. Sand and some fine pebble gravel, interbedded with clay-silt; broadly lenticularto sheet-like strata: partly cemented with calcite (sand> clay-siltsandstone; sand bodies estimated tomake up about 5060% of section). Pliocene-lower Pleistocene transitional facies; fluvial-deltaic deposits of upper Santa Fe Gp, includins parts Camp of Rice and Fort Hancock Fm;. Includes parts of "medial aquifer" -of Leggat et al. (1962). " 111s. Zones where sand bodies are the major constituent (sand>clay-silt-sandstone; sand bodies estimatedto make up about 60-80% of section) . Younger basin-fill units (piedmont-slope and basin-floor facies) IV. Sand, with discontinuous thin clay layers. Plioceneupper Miocene? eolian facies; unnamed upper SantaFe Gp unit. Includes major part of "deep aquiferof Leggat et al. (1962). " V. Pebbly sand to clay mixtures, interbeddedwith clean pebbly sand, and clay-silt; broadly lenticular bodies of clean sand and pebble gravel (20-30%). Plio-Pleistocene distal piedmont facies, mainly coalescent fan (bajada) deposits, and local basin-floor alluvium that intertongue with units I1 to IV and VII. Upper Santa Fe Gp--Camp Rice and Fort Hancock Fms. Includes"NASA (1963) in southern Jornada well I-Jaquifer" of Basin. " 7 I , VI. VII. Coarse gravelly sand to clay mixtures, with thin l e n t i c u l a rb o d i e so fc l e a ns a n d and g r a v e l (10-20%), and discontinuouszonesofcalcitecementation. Pleistocene proximal piedmont facies, mainly alluvial f a nd e p o s i t s . Upper Santa F e Gp-Camp RiceandFort Hancock Fms. C l a y - s i l t ,w i t hi n t e r b e d d e ds a n d and sandstonelenses: broadlylenticulartosheet-likestrata(clay-siltsandstone>sand:sandlenseslessthan 1 0 % o fs e c t i o n ) ; l o c a l l yw i t hc a l c i u m andsodium sulphates.Pliocenelower Pleistocene deltaic-lacustrine and playa facies t h a ti n t e r t o n g u ew i t hu n i t s 111, I V , and V. I nc e n t r a l b a s i n a r e a s t r a n s i t i o n a l downward w i t h u n i t X. Upper Santa Fe Gp-Fort Hancock Fm. Olderbasin-fillunits(piedmont-slope VIII. IX. X. and b a s i n - f l o o r f a c i e s ) Conglomeratic sandstone and mudstone and conglomerate: with discontinuous zones of gravelly sand and clays i l t . Miocene t ol o w e rP l e i s t o c e n ef a n g l o m e r a t e f a c i e s : S a n t a Fe Gp--mainly c o r r e l a t i v e w i t h Rincon Valley and Hayner Ranch Fms., b u t a l s o i n c l u d e b a s a l Camp Rice fan deposits. Fine conglomeratic sandstone andmudstone,interbedded w i t hs a n d s t o n et o mudstone.Miocene t o lower P l e i s t o c e n e d i s t a l piedmontfacies,coalescentfan V I 1 1 and (bajada)depositsthatintertonguewithunits X). MainlylowerSanta Fe-Rincon Valley Fm. C l a y - s i l t , mudstone,and s h a l e ,w i t hl o c a ls a n d s t o n e and conglomeratic lenses: locally with calcium and sodium s u l p h a t e s . Miocene t o lowerPlioceneplaya-lake facies; mainly lower Santa Fe Group-Rincon Valley Fm. 8 Bedrock Units* Qb Basaltic volcanics, mostly flows, with local cindercone and conduit material. Quaternary Tb Basaltic plugs. Miocene and Pliocene Tr Rhyolitic volcanics, withsome interbedded sandstone and conglomerate mostly ash-flow tuff lava. and Oligocene Tri Rhyolitic intrusive complexes; mostly sills, plugs and associated lava domes. Oligocene Ti Silicic to intermediate plutonic rocks. Oligocene and Eocene Tv Andesitic and other intermediate volcanic and volcaniclastic rocks, including lavas and laharic breccias. Oligocene and Eocene Trv Undivided Tr and Tv T1 Mudstone, sandstone, and conglomerate with local beds. Lower tertiary, mainly Eocene Tvl Undivided TV and M Mesozoic rocks--undivided; includes limestone, sandstone, shale and marine limestone. Cretaceous TM Undivided Ti, Tv, T1, M Pu Upper Paleozoic rocks; includes limestone, shale, sandstone and mudstone, with local gypsum beds. MP Undivided P1 Lower Paleozoic rocks--undivided: includes limestone, shale, and minor sandstone. P Undivided P€ Precambrian granite. PPB Undivided Pu,P1, and P€ * M Pu gypsum T1 and Pu and P1 metasedimentary rocks, metavolcanics, and Primarily hydrogeologic boundary units with low very transmissivities. However, limestones may locally be highly transmissive in zones with solution-enlarged joints and fractures: and sandstone, conglomerate, and fractured tuffs and lavas may also form aquifers in a few areas. 9 Faults High-angle normal faults, dashed where inferred; direction of relative displacement shown \ Well Control 3918' 1 1 1 Well on or near lineof section; land-surface elevation and total depth shown 704 4355' Well location projectedto line of section; surface elevation, basin-fill thickness, and total depth shown 640+ 850 22.2.15.143 Well location shown by township south, range east, section, and 40-acre quarter Other Control (see Wilson et al, 1981) X Location of nfr/ USGS vertical electrical sounding Indication electrical of basement <1000 Mg/L Estimated dissolved solid content tds -... + Water table 10 of ground water I -1 5 0 5 10 15 PLATE I. Index map showing location1 of we1 I-control points, hydrogeologic sections, and major boundary faults. 20 Statute Miles - z z I I c 0 ._ c A a, -nc IZZ cn Daiia Ana Mtns I Son I Southern Jarnada del Mueria Basln I I 2 1 I I 4 3 5 I 6 7 - -- - IAndres n- 02- n B Northeahern Mesilla Bolson &l 477 -"_ pu , a, ,- VI 0 - Northern Mesilla Bolson I Southern Jornada del Muerto Basin OTa 10 ml 9 8 iE- - W I I - Southern Jornada del Muerto Basin C' + 5 m 0 c V 10,000' I &p! QTa """" 0 I I c B' A'-10,000 - a, m m m - Z c 0 ._ c u V l O , O O O-- ~ z 0 I I 2 3 4 5 6 7 I I I I I I I I I 8 9 I 10 mt. 0 I 2 I 3 5 4 6 8 7 10 ml 9 - r r I I c C I 0 ._ c 6,000 V W faultJornada m c 0 .c West Slde fault zone Valley V C' I c Mesllla fault zane NN - zane -5,000 5,000 .4,000 4,000 3,000 3,000 2,000 2,000 1,000 1,000 0 PLATE 2. HYDROGEOLOGIC SECTION AA' - PRELIMINARY 3/ 0 !Y PLATE 3. HYDROGEOLOGIC SECTION BB' - PRELIMINARY J. W. Howley PLATE 4. HYDROGEOLOGIC SECTION CC" MSL J W Hawley 3/84 PRELIMINARY 3/84 ' - . . 1 Northern W BolsonMesllla LaMesa(WestMesa) Valley -"" Mesllla J T L Cn n c W m Mtns. I I LasCruces 3 2 Pu PI I I I 4 5 8 7 6 9 10,000 / / 0 m c c% - - W I a, 0 ._ + I c 0 0 m W Organ Mtns. 0 Northern MesaLa W cn Mesa) (West South End -Jornado Basln 1 QTa -\- - -- I 3 2 4 5 6 8 7 0 - MSL I I 0 - / PI " 0 10 ml D' 10 mi 9 I I D' -- 10,000' I . 0 - MSL s. .. - c 0 ._ + QTa - , c . . . 5,000 QTa I 10,000' - Organ Southern Jarnada del Muerta Basin Q To - 0 -- 0 a, G _ E ', ' Z 0 c 5I l0,OOO -- - c 0 0 z 4 c r c 0 c D z I Q - - - Z 7,000' D' U c - L a, m -I z - Q c - I Z a 6,000' r 6,000 n 5,000 5,000 5,000 5,000 4,000 4,000 4,000 4,000 3,000 3,000 3,000 3,000 2,000 2,000 2,000 2,000 1,000 1,000 1,000 1,000 1 0 0 PLATE 5. HYDROGEOLOGIC SECTION DD" J PRELIMINARY I MSL 0 0 - MSL W. Hawley - PRELIMINARY PLATE 6. HYDROGEOLOGIC SECTIONED' 5/85 J W. Hawley 5/85 1 - - Z r r Z c 0 ._ - r Z r I 0 G? .,-0 c .-0 Cn - Z c z 4 0 W F'10,000' m c 0 ._ G 10,000 4" 0 Organ Mtns. W W Mesilla Bolson Cn 0 u a, n a, , cn I 1 0 I 3 2 5 4 , I 4 7 6 I 8 9 I I 0 10 ml I 3 2 4 5 6 8 7 9 10 ml I I I G' - 6,000' f" Z Z z - Z Q 5,000' 5,000 Meslllo Valley f a u l t zane z G c 0 5,000 East Rableda fault zane 4,000 4,000 in57 4,000 "_" \ Tv I 3,000 I 3,000 CQb IT0 2,000 2,000 m ,A' 1 I I"-..- .?-I-""I I r-in 2,000 E-X I""- 1,000 1,000 'V 3,000 I 1 PU 1,000 Tv 1!I I 0 PLATE 7. HYDROGEOLOGIC SECTION FF" PRELIMINARY MSL x 0 "--- I J. WHawley 5/85 PLATE 8. 'HYDROGEOLOGIC SECTION GG" PRELIMINARY - -- Z Q 3 3 c 0 .c G io'ooo 1 H' u a, Cn I Mesllla 0 MSL a Bolson -"-- _"" - "- ~"""- " " I 0 I 2 3 I I I I 4 5 I 6 - 7 8 9 I I I 0 a a 10 rnl I I I 2 3 4 5 I I 6 7 8 I I PI I n z z m u- 1 faulted PPE 5,000 0 I 0 5,000 I 2 I I 4 3 4 5 0 6 m! 1 I W - Y Y c c ~ c W W u a, m I H' G Pass PI / P € 0 I Flllmare 5,000 I H Z 10,000' l0,OOO =0Loom._- 10 ml 0 0 I Q 10,000' I - - 9 - - c 3 3 I 5,000 ' 4.000 Pu PLATE 9 . HYDROGEOLOGIC SECTION GH'- PRELIMINARY J W.Hawley 3/84 PLATE IO. HYDROGEOLOGIC SECTION HH' and 11'- PRELIMINARY ~... _. .. "".c_ AtlVNIW113tld - ll1 N01133S I 0 X i I I I I 0 td I I I a - 0 I I I 31E)0103E)OtlClAH €I 3 1 V l d I I I / dW I 1 I 000'2 I I I I - . 000' I I I 000'1 Y / I 000' I ._ I 000'2 000'2 "u- I"" Wl / E-lIzT /- """ / / W OOO'E O0O1E OOO'E m Id ,009 ..1...-... 4...-. I W w P N ?! 01 01 P P P w- 000% OOO'P ,000's - ~ .,000's OOO'P N W W m I vu m W ,000'9 I 1 I . I oools 1 1 - 000'01 OOO'Ol 7 W W E Z z- AtlVNIW113tld -,Y)1 '21 3 1 V l d N01133S 319010390tlClAH AUVNIWll-Jtld - ll'r N01133S 319010390klaAH *I1 3 1 V l d 0 1SW - 0 000' I 000'2 000'2 ! I OOO'E OOO'P OOO'P 000'9 000's ,000's m-m 000'E OOO'P L r I !W r I 01 6 " 8 I I L 9 I s P I I I I E 2 I 0 I 01 I I I I I 6 8 L 9 s I I I I I 9 E 2 I 0 9 Z ,000's - 4 4 - m m c 0 n n n 0 0 - - - - - W t 0 LL LL (3 (3 c c 0 .t + 0 W in u 7 7 c 0 c V V a, a, W cn cn N ~ 0 I 0 4 3 2 5 6 I 7 8 9 I I I 10 ml J Y 2 Y Z Q c 0 " c 0 W cn 4,000' 4,000' 3,000 3,000 2,000 2,000 1,000 0 0-MSL J NN' - PRELIMINARY PLATE 15. HYDROGEOLOGIC SECTION m m c A c 0 - 0 - 0 t c c 0 7 cn Robleda - u u w a, m c c 0 c u c cn cn 7 Y c c 0 - c 0 ._ c u c 0 - 0 a, V t u W I Mauntalns I --I I Trv I -" -- ---- I m cn I I I 0 I I - " I 1 0 - - Tr+ I I I I I 2 3 4 5 - - CI W n U c 0 ._ c V a, c cn """-,""""- QTa " I 6 7 I I 8 9 I Trv? " " " " " " " I I I I I I I I I I ""----------I I I I -- lo,oool -- -- - --- - -- / I N' 0 a, cn I Tr v I I 0 a, Bolson cn c V a, a, T" I "-"-="""" -Tv c u a, c 0 .c -0 t QTa QTa -4 "Trv W Mesa La(West Mesa) QTa Y 7 (3 - ._ c 0 W r W W ~ c 3/ 04 - - LL LL n n c a, 10,000' - - W. Hawley I I I I -TMMP? I TVI - - "- - --I 5,000 0- MSL 10 mi A - n I (3 c c c c W a, 0 u cn 0 u cn c ._ 0 t 0 a, cn 5,000' 5,000' v" 4,000 4,000 Pu \ '. 3,000 3,000 PI 2,000 2,000 \ -. I I I I 1,000 De . /x""-" / Tr v 1,000 / / MP? / 0-MSL 0 PLATE 16. HYDROGEOLOGIC SECTION AN' - PRELIMINARY J. W. Hawley 4/ 84