Document 10950733
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DESCRIPTION OF MAP UNITS QTpe1 QTpe1 Qpe2 Qpec2 QTpe1 3634000 QTpe1 Qpe3 Qpe2 Qpe2 Qpec2 Qpe2 Qpe3 Qpec2 Qpe2 Qpe2 Qpe2 QTpe1 Qpe3 Qpe3 Qpe3 Qpe2 QTpe1 Qa Qpe4 Qpe2 QTpe1 daf 3632000 Qpe3 Qpe3 Qpe2 Qpe3 QTpe1 Qpe3 Qpe3 Qpe2 Qpe2 Qpe2 Qece Qpec2 Qpe2 daf QTpe1 Qece Qpe2 Qpe2 f daf Qpec2 Qpp3 Qpe2 Qpe3 Qpe2 Qpp3 Qpec2 Qpp3 Qpp4 Qpp4 QTpp2 Qpp4 Qpp3 QTpp2 daf Qppc2 QTpp2 Qpp4 Qpp5 daf Qpp3 Qpp3 QTpp2 Qpp3 Qpp3 Qpp4 QTpp2 3627000 Qppc2 daf Qpp3 QTpp2 Qpp3 Qpp3 Qpp3 Qpp3 daf QTpp2 Qa Qpp3 daf Qpp3 Qpp4 Qpp4 Qpp5 Qpp5 QTpp2 QTpp2 Qpp5 3624000 QTpp2 Qpp4 Qpp3 Qpp4 Qe 547000 QTpp2 548000 104°30'0"W Qpp5 Qa Qpp4 daf Qpp4 Qpp3 Qpp3 Qpp4 Qppc2 QTpp2 QTpp2 Qpp3 Qpp3 Qppc2 Qpp3 Qpp4 Qpp5 Qpp5 Qpp3 Qpp3 " " daf Qpp3 Qa Qpp5 ARTESIA Artesia Qpp4 Qpp5 Qpp5 Qpp3 Qpp5 daf 550000 Qa daf Qa daf DAYTON NEW MEXICO daf This and other STATEMAP quadrangles are available for free download in both PDF and ArcGIS formats at: http://geoinfo.nmt.edu Yeso formation, undifferentiated — Cross section only. Qds daf Qppc2 daf Qpp3 QTpp2 552000 Qot Qppc2 Qe daf 553000 Qpp5 Qpp3 554000 104°25'0"W 555000 0.5 0 0 1000 2000 0.5 3000 Pa Abo formation, undifferentiated — Cross section only. Qot Qpp5 daf 556000 5000 0 6000 upper 3624000 558000 32°45'0"N 104°22'30"W by David J. McCraw and Shannon Williams New Mexico Bureau of Geology and Mineral Resources, 801 Leroy Place, Socorro, NM 87801 middle Pa View looking north-northwest with Tumbleweed Draw in the foreground (Qa). Younger Rio Peñasco piedmont deposits (Qpp4) below the storage tank are inset into old piedmont deposits (Qpp3). The hill on the distant skyline is QTpp2. Motts, W. S. and Cushman, R. L., 1964, An appraisal of the possibilities of artificial recharge to groundwater supplies in part of the Roswell Basin, New Mexico: U.S. Geological Survey Water-supply Paper 1785, 86 p. EXPLANATION OF MAP SYMBOLS A A' Location of geologic cross section. GEOLOGIC CROSS SECTION Geologic contact. Solid where exposed or known, dashed where approximately known, dotted where concealed or inferred. Arrows showing mean direction of paleoflow, based upon pebble imbrication, n ≥ 20 each arrow. A Soil pit. Oil & gas exploration well used in cross section construction. A’ W 4,000 ft ASL E U.S. Highway 285 Qa 3,000’ May 2011 Pye McCraw, D. J., Rawling, G., and Land, L. A., 2007, Preliminary geology of the Bitter Lake Quadrangle, Chaves County, New Mexico: N.M. Bureau of Geology and Mineral Resources, Open-file OFGM 151, 1:24,000. Qot daf Qpp5 Pqg Geologic map of the Artesia quadrangle, Eddy County, New Mexico. Psa Meinzer, O. E., Reinich, B. C., and Bryan, K., 1926, Geology of No. 3 reservoir at the site of the Carlsbad irrigation project, New Mexico, with respect to water tightness: U.S. Geological Survey Watersupply Paper 580, p. 12-13. 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 Open-file Geologic Map 169 Pqg Qppc2 557000 7000 FEET 1 KILOMETER Psg McCraw, D. J. and Land, L. A., 2008, Preliminary geology of the Lake McMillan North Quadrangle, Eddy County, New Mexico: N.M. Bureau of Geology and Mineral Resources, Open-file OF-GM 167, 1:24,000. daf daf Psd McCraw, D. J., 2008, Preliminary geology of the South Spring Quadrangle, Chaves County, New Mexico: N.M. Bureau of Geology and Mineral Resources, Open-file OF-GM 171, 1:24,000. 1 MILE 4000 Psr Lyford, F. P., 1973, Valley fill in the Roswell-Artesia area, New Mexico: U.S. Geological Survey Openfile Report 73-163, 26 p. Qpp5 daf Py Kelley, V. C., 1971, Geology of the Pecos country, southeastern New Mexico: New Mexico Bureau of Mines and Mineral Resources Memoir 24, 78 p. daf Qa [575] 835-5490 Pye Contact beneath conglomeratic boulder between QTpp2 and a Qppc2 channel, incised into the old Rio Peñasco piedmont alluvium. The boulder is not in situ and its’ matrix is actually stage V pedogenic carbonate. Qpp5 10047 New Mexico Bureau of Geology and Mineral Resources New Mexico Tech 801 Leroy Place Socorro, New Mexico 87801-4796 Glorieta sandstone tongue — Cross section only. 3625000 CONTOUR INTERVAL 10 FEET Magnetic Declination May, 2009 8º 16' East At Map Center QUADRANGLE LOCATION Pg Qot daf daf NATIONAL GEODETIC VERTICAL DATUM OF 1929 PARISH RANCH San Andres formation — Cross section only. Qpp5 Qpp5 Ptd Ptm Hawley, J. W., 1993, The Ogallala and Gatuña formations in the southeastern New Mexico Region, a progress report: New Mexico Geological Society Guidebook, 44th Field Conference, p. 261269. Psa Qpp5 Qpp3 daf Pt Fiedler, A. G., and Nye, S. S., 1933, Geology and ground-water resources of the Roswell artesian basin, New Mexico: U.S. Geological Survey Water-supply Paper 639, 372 p. 1:24,000 ARTESIA NE LAKE MCMILLAN NORTH Queen and Grayburg formations, undifferentiated (Guadelupian) — Cross section only. Lower Permian Formations 3626000 Qppc2 Qpp4 Qpp3 104°27'30"W Pqg Qlt3 Qlt3 Qpp5 Qpp3 daf QTpp2 551000 Qlt3 Qpp5 Qpp3 Qpp3 Ps Delher, C., Pederson, J., and Wagner, S., 2005, Preliminary geologic map of the Lake McMillan South 7.5 Minute Quadrangle: New Mexico Bureau of Geology and Mineral Resources, Open-File Geologic Map Series, OF-GM 97, 1:24,000. Qpp3 Qe QTpp2 Qpp3 Qa Qlt1 Qpp4 daf Qpp3 Qpp4 ? REFERENCES Permian Artesia Group 3627000 Qlt3 ? Tpp1 PALEOZOIC Qpp4 Qpp4 1 HOPE SE Qa Qppc2 1000 SPRING LAKE Qpp5 Qpp4 Qpp3 Qpp5 Qpp3 1 ESPUELA Qpp4 Qpp4 Qpp4 Qpp3 Qppc2 Qe 549000 daf Qpp5 QTpp2 Qpp3 Qppc2 Qpp4 Qpp3 Qpp4 Qpp3 Qpp3 Qpp4 QTpp2 Qpp5 Qpp5 Qlt3 Qot Qpp4 Qpp3 Qpp3 Qpp3 Qpp5 daf Qpp4 QTpp2 Qpp5 Base map from U.S. Geological Survey 1955, from photographs taken 1946, Topography by planetable surveys 1955. Polyconic projection, 1927 North American datum, reprojected to UTM projection -- zone 13N 1000-meter Universal Transverse Mercator grid, zone 13, shown in red HOPE NE Qpp5 Quaternary sinkhole deposits, primarily caused by collapse (Historic to middle Pleistocene) — Complexes of unconsolidated, well- to poorly-sorted, coarse- to fine-grained sands to clay, alluvial, colluvial, eolian, and occasional lacustrine deposits within closed depressions. Colors variable. Thickness <1 to 3 m. Qpp2 Qpp3 QTpp2 Qpp3 Qlt3 Qlt3 Qpp4 Qpp5 Qpp3 Qpp3 Qpp5 Qpp5 Qpp4 Qpp5 Qpp5 Qpp5 daf Qpp3 Qpp3 QTpp2 Qpp5 Qpp4 daf Qpp3 Qpp3 Qpp4 QTpp2 QTpp2 Qpp3 daf Qpp5 Qpp3 Qpp3 Qpp3 Qpp4 QTpp2 QTpp2 32°45'0"N Qpp5 daf Qpp3 Qpp3 Qa QTpp2 Qpp3 Qpp4 Qpp4 Qpp3 Qds Qpp5 Qlt3 Qpp5 Qlt3 daf Qpp3 Qpp3 QTpp2 Qa Qot Qpp4 daf 3628000 Qlt1 Qpp5 Qpp3 Qpp3 Qpp3 Qpp4 QTpp2 Qpp5 QTpp2 daf daf Qpp5 Qa Qpp4 daf 32°47'30"N Quaternary depression fill, undifferentiated (Holocene to middle Pleistocene) — Unconsolidated, well-sorted, fine-grained (fine sands to clay) complexes of alluvial, colluvial, eolian, and occasional lacustrine deposits within closed depressions. Colors variable. Depressions are created by either gradual subsidence or sudden collapse followed by gradual subsidence of underlying gypsiferous carbonate terrane. These complexes are often significantly modified by stream erosion and deposition, playa deposition, deflation, and mass wasting. Depression fills have been active since the middle Pleistocene and are usually 1-3 m thick but can reach thicknesses in excess of 30 m. daf Qpp3 ? QTpe2 Qot Qpp5 Qpp4 Qpp3 daf daf QTpp2 Qpp3 Qpp3 daf Qpp5 Qot Older piedmont alluvium (Middle Pleistocene to late Pliocene) — Thickness 2 to 6 m. daf Qpp5 Qpp4 Qppc2 Qpp3 Qpp3 Qpp3 Old Quaternary piedmont alluvium (Upper to middle Pleistocene) — Most extensive deposit. Thickness 2 to 4 m. Qpp4 Qpp4 daf Qpp3 Qpp4 Qpp3 Qpp3 Qpce Qppc2 daf Qpp3 Qpp3 Qpp3 QTpp2 Qpec2 QTpp2 Younger Quaternary piedmont alluvium (Upper Pleistocene) — Thickness 2 to 4 m. Qpp4 Qpp3 Qpp3 daf Qpp4 daf Qpp4 3625000 Qppc2 Qpp4 Qpp3 Qpp3 Qpp3 Qpp3 î Qa Qpp3 Qppc2 Qpp3 Qpp3 Qe Qot Qa Qpp4 Qpp4 daf Young Quaternary piedmont channels filled with eolian sands, occasionally forming dunes (Holocene to upper Pleistocene) — Thickness ≤ 1 m. Qd Qppc2 Qpp4 QTpp2 Qpp3 Qa Qpp4 daf Qece Youngest Quaternary piedmont alluvium (Holocene to upper Pleistocene) — Thickness 1 to 3 m. daf Qpp5 Qpp5 Qpp4 Qpp3 QTpp2 Qpp4 Qpp4 Qa QTpp2 QTpp2 QTpp2 daf Qpp4 daf daf Qa Qpp5 Qpp5 Qpp4 QTpp2 QTpp2 daf Qpp3 Qppc2 Qpp3 Qpp4 Qpp3 Qpp4 3626000 QTpp2 Qpp3 Qpp4 Qpp3 QTpp2 Qpp3 daf Qpp3 daf Qpp5 Qpp4 Qppc2 Qpp3 Qpp4 Qpp3 Qpp3 Qpp3 Qpp3 Qpp5 Qpp5 QTpp2 daf QTpp2 Qpp3 Older Quaternary piedmont channels (Upper Pleistocene) — Thickness <1 to 2 m. Qds Quaternary depression fill and sinkhole deposits 3629000 Qpp4 daf QTpp2 Qpp4 QTpp2 Qpp3 daf QTpp2 Qpp4 Qppc2 Qpp3 Qpec1 Qot Qpp5 Qppc2 Qpp4 QTpp2 Qppc2 Qpp4 Qpp5 Qpp5 Young Quaternary piedmont channels (Holocene to upper Pleistocene) — Thickness <1 to 2 m. Qpec2 Qpp5 Qpec2 Qpp3 3630000 Qpp5 Qpp4 Qpp4 Qpp4 Qpp5 QTpp2 daf Qpp4 Qpp3 daf daf Qpp3 fdaf32445 daf daf daf Qa Qpp5 Qpec2 Qpp5 Qpp3 Qot daf Qpp5 Qpp3 Qpp4 Qpe4 daf Qpp3 f9878 Qpe3 Qpp4 Qpp4 Qppc2 Qpp5 Qpp3 Qpp3 QTpp2 QTpp2 Qpp4 Qpce daf Qpp4 Qpp3 QTpp2 Qpp3 Qpec2 Qpec2 Qpp5 Qpp3 Qpp3 daf QTpp2 Qpp3 QTpp2 fdaf9341Qpp4 Qpp4 daf Qpp4 Qpp4 Qpe4 Qpe4 Qpe3 Qpe3 Qpe3 Qpec2 Qpp3 Qppc2 fdaf 9363 Qpp3 QTpp2 Qpp4 Qpp3 QTpp2 f f9418 Qpp3 Qpp3 QTpp2 Qpe4 Qpe3 Qpp3 QTpp2 Qpp3 QTpp2 3628000 QTpp2 Qpe4 Qpp3 Qppc2 QTpp2 f Qpec2 Qpp3 Qpp3 Qds QTpp2 Qpp3 32°47'30"N f 9133 Qpe3 Qpe3 32591 Eagle Creek piedmont channel deposits (Historic to upper Pleistocene) — Up until the mid 20th Century, prior to channelization through town, Eagle Creek flowed primarily south of the town of Artesia. These abandoned channels (2-3 m thick) are now similar to the numerous, thin alluvial channels, swales, 290 and occasional coalescing depression fill deposits that only drain the local piedmont alluvial complex. These channels usually consist of light brown (7.5YR6/4) to pinkish gray (7.5YR6/2), unconsolidated, poorly sorted, fine-grained sand, silt, and clay sediments. They were often mapped primarily by soil moisture increases in lower areas relative to adjacent piedmont deposits noted on photography. Eolian input often mantles the “v-shaped” contours associated with stream channels and in some areas sand sheets and dunes can fill these channels (Qece). Older channels (Qpec1) are mapped on Qpe3 surfaces above modern Eagle Creek in the vicinity of the Eagle Creek retaining dam on the northwestern edge of the quad. Lithologically, the Rio Peñasco piedmont deposits are distinctly different from those of Eagle Creek to the north and Seven Rivers to the south. While gravels are dominated by limestone clasts, dolomite, chert, yellow-brown sandstone, conglomerate, and quartzite are common. The matrix consists of dark yellowish brown (10YR3/4) to light brown (7.5YR6/3), unconsolidated, moderately sorted, coarse- to fine-grained sand, silty sand, silt, and sandy clay. Stage V-VI pedogenic carbonate can be found in the oldest deposits, while middle to upper Pleistocene deposits range from stage IV to III. Degree of pedogenic carbonate development can be the main distinguishing characteristic between the youngest deposits. A' Qpe4 Qpec2 daf daf Qpec2 Qpe3 Qpec2 10661 daf Qpe3 Qppc2 Qppc2 QTpp2 QTpp2 î QTpp2 f daf Qpe3 Qpe4 Qpe3 Qpe4 Qpe3 3631000 Qpe4 Qpe4 Qece Qpe3 Qpe2 Qpe4 Qpe3 Qe Qpe2 Qpe3 daf Qppc2 f QTpe1 Qa Qpp4 Qpp4 Qpp3 9448 Qpce Qpp4 9413 3629000 Qpp5 f Qpec2 Qpe3 Qpe3 Qpe4 Qpec2 Qpe3 9777 f daf Qpec2 Qpe4 Qds Qpe3 Qece Qpec2 QTpp2 Qpp3 QTpp2 Qece Qpe4 Qpe3 Oldest piedmont alluvium (Middle Pleistocene to late Pliocene) — Thickness 2 to 6 m. QTpe1 Rio Peñasco alluvial piedmont deposits (Upper Pleistocene to Late Miocene(?)) — The headwaters of the Rio Peñasco are located high in the Sacramento Mountains in predominantly carbonate rocks of the San Andres formation (Psa) and clastic sediments of the Yeso formation (Pye). Where it leaves the Permian highlands, it has built a large piedmont alluvial complex, which coalesces with Eagle Creek to the north and the Seven Rivers to the south. These piedmont deposits grade to and onto the Pecos Valley alluvial terraces on the easternmost edge in the Artesia area. Oldest, highest remnant surfaces (Tpp1 and QTpp2) are Pliocene or older, and likely graded to a river system which forms Gatuña formation deposits today. Middle to upper Pleistocene piedmont deposits (Qpp3-4) are inset into these and grade to Qot. The youngest, Qpp5, grades to Qlt3. Several channels (e.g., Tumbleweed Draw) on this piedmont surface were likely former Rio Peñasco channels. Qpe4 daf Qpe4 269 3632000 Qpe3 Qpe3 Qa Qpe4 Qpe3 258 daf Qa Qpe4 Qpe2 QTpe1 Qpe4 10061 Qpe3 f9545QTpe1 Qds Qpe4 Qpe4 Qa Qpe3 f8773 Qpe2 Qpe3 Qpe3 Qpe3 Qpe4 Qa 23.0 250 Older Quaternary piedmont alluvium (Upper to middle Pleistocene) — Most extensive deposit. Thickness 2 to 4 m. Qpe2 Rio Peñasco alluvial piedmont complex Qpec2 Qpe3 daf Qpe4 Qpe4 Qpe3 Qpe4 daf Qpe3 Qpe3 Qpe2 Qpe4 Qpe2 daf daf Qpe2 Qpe3 QTpp2 10047 QTpp2 Qpe3 Qa Qpe3 Qpe4 Qpe2 Qpe4 daf Qpp3 QTpp2 fdaf QTpp2 Qpe4 9358 f daf Qpe4 Qa Qpe2 Qpe4 Qpec2 QTpe1 Qpe2 f Qpe2 Qpe3 Qpe2 Qpe4 Qa Qpe2 Qpe3 Qpe4 Qpe4 Qpe3 5.3 Younger Quaternary piedmont alluvium (Upper Pleistocene) — Thickness 2 to 4 m. Qpe3 Qpe4 Qpe4 Qpec2 Qpe3 Qpe4 daf Qpe3 Qpe4 QTpe1 Qpe2 QTpp2 Qpe2 9387 Qpe4 Orchard Park terrace alluvial deposits (upper Pliocene (?) to upper Pleistocene) — According to Fiedler and Nye (1933), the Orchard Park terrace rises 1.5-3 m above the Lakewood terrace and 10.5-20 m above the Pecos floodplain. It is comprised of gravels and pebbles of dolomite, limestone, sandstone, chert, and quartzite in a very pale brown (10YR7/4) to reddish brown (5YR4/4), unconsolidated, moderately sorted, coarse- to fine- grained sand, silty sand, silt, and sandy clay. Pedogenic carbonate is a strong stage III. Thickness ranges from 3 to 15 m. Qot daf Qpe4 Qpec2 Qpe2 32°50'0"N Qpe3 Qpec2 Qd Qpe2 3633000 Qpe3 Qpe3 Qpe2 Qpe2 QTpe1 Qpe2 Qpe4 Qpe4 daf Qpe3 Qpe2 Qpe3 daf Qpe2 1.8 Ma Youngest Quaternary piedmont alluvium (Holocene to upper Pleistocene) — Thickness 1 to 3 m. Qpe4 daf Qpe4 Qd Qpec2 Qpe2 Qpe4 Qpec2 Qpe2 QTpe1 Qece QTpe1 Qpe2 Qpe2 daf Qece Qpe4 Qpe2 9710 Qpe2 Qpec2 Qpe2 daf 3630000 Qe Qece Qpec2 Qpec2 Qpe2 Qpe3 Qpe3 daf Qpe3 Qpe4 QTpe1 Qpe2 Qpe2 Qpe4 Qpec2 Qpe3 Qpe2 Qpec2 Qpe3 Qpe3 Qpe4 Qpe3 Qpec2 Qece QTpe1 8920 f Qpe3 daf daf Qpe4 Qpe2 QTpe1 Qpe3 QTpe1 f 10272 Qpec2 Qece Qpe2 Qpe2 Qpe3 f 8562 Qpe4 f8837 Qpe4 daf Qa Qa f8894 daf QTpe1 Qpe2 QTpe1 QTpe1 Qpe2 QTpe1 daf Qpe3 Qpe3 Qpe3 Qpe3 Qece Qpe4 QTpe1 Qpe2 Qpec2 daf Qpe4 Qpe4 Qpe2 QTpe1 Qpe3 QTpe1 8935 Qpe2 QTpe1 Qpe2 Qpec2 Qpe4 Qpe3 Older Lakewood terrace alluvial deposits (upper to middle Pleistocene) —Thickness ~2 to 9 m. Qot Qpe3 daf Qpe2 Qa Youngest Lakewood terrace alluvial deposits (upper Pleistocene) — Thickness <1 to 1 m. Qd 780 Qpec2 Qpe4 Qpe4 Qlt1 Qpe4 Qpe3 Qa Qpe2 QTpe1 Qpe4 Qpec2 Qpe4 QTpe1 Qpe3 Qpe4 Qpe3 Qpe4 Qpe2 Qpe4 Qlt3 Qpe4 Qpec2 Qpe3 Qpe4 Qpe3 Qpe4 Qpe3 daf QTpe1 daf Qpe2 Qpe3 11468f f QTpe1 Qpec2 Qpe4 Qpe3 Qpe2 daf Qpe2 daf Qpec1 QTpe1 Qpec1 Qpec2 QTpe1 Qpe4 QTpe1 Qpe2 Qpe2 3634000 Qpe4 Qpec2 Qpe4 Qpe3 Qds QTpe1 daf QTpe1 QTpe1 QTpe1 daf QTpe1 Qpe3 QTpe1 Qpe3 QTpe1 Qpe3 QTpe1 Qa daf Qa Qpe4 QTpe1 Qpec2 Qa daf Qpe3 Qpe2 Qpe4 QTpe1 Qpe3 Qpec2 Qds Qpe3 Qpec2 Qe Qpe2 Qpec2 Qpe2 Qpe4 Qpe4 Qpe2 QTpe1 Qpe3 Qpe2 A Qpec2 Qpe4 Qpe2 Qpe3 Qpe3 Qpe2 QTpe1 Qpe3 Qpe2 QTpe1 Qpe2 Qpe2 Qpe2 QTpe1 QTpe1 Qpe2 Qpe3 Qpe4 Qpe4 QTpe1 Qpe4 Qpec2 Qpe2 Qpe2 QTpe1 Qe Qpe2 QTpe1 QTpe1 Qpe2 Qpe3 Qpe3 QTpe1 Qpe2 QTpe1 Qpe2 QTpe1 QTpe1 Qpe2 Qpe4 Qpe2 QTpe1 Qpec2 QTpe1 Qpe2 QTpe1 Qpe4 Qpec2 Qa Qpe2 Qpe3 Qpe2 Qpe3 Qpec2 Qpe3 Qpe2 QTpe1 Qpe4 Qpe3 Eagle Creek alluvial piedmont deposits (Upper to middle Pleistocene) — Eagle Creek (or Eagle Draw further west) heads on the easternmost flank of the southern Sacramento Mountains in San Andres Formation (Psa) rocks and flows east to the Pecos River. Where it leaves the Permian highlands, it has built a large piedmont alluvial complex, which coalesces with the Rio Felix to the north and the Rio Peñasco to the south. This piedmont complex grades to and onto the Pecos Valley alluvial terraces. Oldest, highest remnant surfaces are correlative to Quaternary – Tertiary piedmont deposits of the Rio Peñasco (QTpp2). Collectively, these are comprised of gravels that are almost exclusively limestone derived from Psa, supported in a matrix of light brown (7.5YR6/3), unconsolidated, moderately sorted, coarse- to fine-grained sand, silty sand, silt (largely calcareous), and sandy clay. Topographic expression between the youngest deposits are often to subtle to practically non-existent. Distinction is often based upon a stronger developed pedogenic carbonate (Qpe3 = stage III – II+; Qpe4 = stage II). Qpe4 grades to Qlt3. Lakewood terrace alluvial deposits (upper to middle Pleistocene) — Following McCraw, et al. (2007) and McCraw and Land (2008), three distinct, low-lying (upper to uppermost middle(?) Pleistocene) “Lakewood terraces” are recognized. Fiedler and Nye’s original Lakewood terrace, equivalent here to Qlt1, has an elevation of 6 to 9 m above the floodplain and is located on the eastern edge of the quad. The lowest and youngest, Qlt3, is <1-2 m above the floodplain and extends up Tumbleweed Draw. These are comprised of occasional gravels and pebbles, brown (10YR5/3) to dark yellowish brown (10YR3/4), unconsolidated, moderately sorted, coarse- to fine- grained sand, silty sand, silt and sandy clay. Pedogenic carbonate increases from stage I to stage II+ (occasionally III) from Qlt3 to Qlt1. Mostly non-gypsiferous. Qpec2 Qpec2 Qpe4 Qpe3 Qpe4 3635000 Qpe4 Qpec2 Qece Qa Qa 4,000 ft ASL 9777 9878 Qpe2 Qpe2 Qpe4 Qa Qa Eagle Creek alluvial piedmont complex Qot 5 Qpe2 Qa Qpe4 Qpec2 Qpe2 Qpe2 daf Qpe3 3244 Qpe3 Qe Qpe3 Qpe3 Qpe4 Qpe3 Qpe3 QTpe1 Qpe3 Qpe3 Qpe2 daf Qpe3 Qpe4 Qpec2 QTpe1 Qpe4 Qpe3 Qpe3 Alluvial terraces of the Pecos River and its tributaries were first described in the classic study of Fiedler and Nye (1933). They recognized 3 terraces: (from lowest to highest) the Lakewood, the Orchard Park, and the Blackdom. On the Artesia quad, much of the higher Eagle Creek and Rio Peñasco piedmont alluvial complex is erroneously mapped by Fiedler and Nye (1933) as Blackdom terrace. These materials, however, are all derived from these western tributaries, not the Pecos River. QTpe1 Qpp3 1 Qa Qpe3 QTpe1 Qpec2 128 3259 Qpe3 daf Qpe2 Qpe2 Qpe4 QTpe1 Qpe2 QTpe1 Qa Qpe2 Qpe2 Young Quaternary piedmont channels filled with eolian sands, occasionally forming dunes (Holocene to upper Pleistocene) — Thickness ≤ 1 m. Qpce Qpe4 Qpec1 Qlt1 lower QTpe1 Qpe2 Qpe2 daf Qpe3 Qpe2 Qpe4 Qpec2 Qece Qpe3 Qppc1 Salado Fm Qpe3 Qa 3631000 Qpe3 QTpe1 Qpe3 Qpe3 QTpe1 Qpe4 Qpe2 Qpe3 Qece Qpe2 Qpe3 32°50'0"N Qpe2 QTpe1 Qpec2 QTpe1 Qpec2 Qpe4 Pecos Valley alluvial terrace complex Qppc2 Qpce Qpp4 Artesia Group San Andres Seven Yates Tansill QueenFm Grayburg Fms Rivers Fm Fm Fm daf Qpe3 QTpe1 QTpe1 Qa Qpe3 Qpec2 Qpe2 QTpe1 Qpe3 Qpe4 Qpe3 Qpe3 Qpe2 Qpe2 Qpe3 Qpe3 Qpe2 daf QTpe1 Qpe3 QTpe1 Qpe2 Qpec2 Qpec2 Young Quaternary piedmont channels (Holocene to upper Pleistocene) — Thickness <1 to 2 m. 3636000 Qpe4 Yeso Fm Qpe3 Qpe2 Qpe2 daf Qa Qlt2 Qppc2 Depressions and Permian sinkholes bedrock Abo Fm QTpe1 Qpe3 Qpe3 QTpe1 Qpe4 11 Pleistocene Qpe2 Qpe3 Qpe3 Qpe3 Eagle Creek piedmont alluvial deposits Qpp5 Qlt3 Miocene Pliocene Qpe3 QTpe1 Qpe4 Qpe2 Qpe3 Qpe3 Qpe3 Holocene Permian Qpe2 QTpe1 Qpe2 QTpe1 QTpe1 Qpe3 QTpe1 Qpe4 Rio Peñasco piedmont alluvial deposits Pecos Valley alluvial terrace deposits Historic Quaternary QTpe1 Qpe3 daf Qa 0 ka 9418 Qe QTpe1 QTpe1 daf Qpec2 Qpe4 Quaternary alluvium, undifferentiated (Historic to uppermost Pleistocene) — Brown (7.5YR4/2) to light brown (7.5YR6/3), unconsolidated, moderately sorted, pebbly sand, silt, and clay. Contains primarily carbonate gravels and pebbles. Varies considerably in thickness from <1 to 3 m in tributaries and up to 10-12 m in the floodplain. Alluvium 1 QTpe1 Qpe2 Qpec2 8773 1066 Qpe2 QTpe1 Qpe3 daf Qpe4 9358 9341 Qe Qpe2 Qpe3 QTpe1 Qpe3 Qpe2 Qpe2 daf Qpe4 Qpe4 Qpe3 Qpe4 Qpe3 9363 Qpe2 QTpe1 Qpe3 Qpe2 Qpe2 Qpec2 Qpe4 QTpe1 Qpe2 QTpe1 Qpe4 Qpe3 QTpe1 Qpe3 QTpe1 Qpe4 Disturbed land and/or artificial fill (Historic) — Dumped fill and areas affected by human disturbances, mapped where deposits or extractions are areally extensive. Especially notable are the numerous constructed oil and gas well pads. Also includes the U.S. Bureau of Reclamation’s Kaiser Channel of the Pecos River, as well as other straightened reaches. daf 9545 Qe QTpe1 Qpe2 Qpec2 daf Qpe3 daf Qpe3 Qpe3 Alluvium, lacustrine, and anthropogenic deposits 3637000 Qpe4 9133 QTpe1 Qpe2 Qpe3 Qpec2 Qpe4 Qpe3 Qpe4 CORRELATION OF MAP UNITS Paleozoic Qpe4 Qpe2 daf Qpec2 Qpec2 Qpe4 NEOGENE Qpe3 9710 QTpe1 3633000 Qpec2 Qpe2 Qpe2 Qpe2 Qpec2 Rio Peñasco piedmont channel deposits (Historic to upper Pleistocene) — Numerous, thin alluvial channels, swales, and occasional coalescing depression fill deposits drain the piedmont alluvial complex. They usually consist of light brown (7.5YR6/4) to pinkish gray (7.5YR6/2), unconsolidated, poorly sorted, fine-grained sand, silt, and clay sediments. They were often mapped primarily by soil moisture increases in lower areas relative to adjacent piedmont deposits noted on photography. Eolian input often mantles the “v-shaped” contours associated with stream channels and in some areas sand sheets and dunes can fill these channels (Qpce). On the Rio Peñasco, on the Dayton quad immediately to the south, older channels (Qppc1) are mapped on Qpp4 surfaces, similar and stratigraphically equivalent to those on Eagle Creek Qpe3 deposits. 1 QTpe1 QTpe1 Qpe2 Qpe3 QTpe1 Qpe2 3635000 QTpe1 Qpe2 Qa QTpe1 QTpe1 QTpe1 Qpe2 Qpe2 QTpe1 3636000 QTpe1 Qpe3 Qpe4 Qpe2 Qpe3 Qpe3 QTpe1 daf Qa Qpe4 CENOZOIC 32°52'30"N Qpe4 daf Qpe3 104°22'30"W 558000 1006 Qpe3 Qpec2 557000 8562 Qe Qpe2 Qpec2 Qpe2 Qpe2 QTpe1 Qpe3 Qpe2 Qpe1 QTpe1 556000 9413 Qpe2 QTpe1 QTpe1 Qpe2 QTpe1 Qpe2 QTpe1 Qpec2 QTpe1 QTpe1 QTpe1 Qpe2 QTpe1 QTpe1 Qpe2 555000 9387 3637000 Qpe2 QTpe1 Qpe2 QTpe1 104°25'0"W 554000 553000 9448 8837 Qpe3 QTpe1 552000 8894 Qece Qpe2 Qpe3 Qpe3 QTpe1 32°52'30"N 2 daf QTpe1 32°52'30"N 551000 1027 Qpe2 104°27'30"W 550000 8920 Qpe2 549000 1146 8 8935 32°52'30"N 548000 7 547000 1004 104°30'0"W NMBGMR Open-file Geologic Map 169 Last Modified June 2011 Neogene NEW MEXICO BUREAU OF GEOLOGY AND MINERAL RESOURCES A DIVISION OF NEW MEXICO INSTITUTE OF MINING AND TECHNOLOGY Qa 3,000’ Pqg Pqg COMMENTS TO MAP USERS 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. Psa Psa 2,000’ 2,000’ Psa Pg Pg 1,000’ Pg 1,000’ Pye Pye Pye 0’ SL Pa -1,000’ Pa 0’ SL -1,000’
