NEW MEXICO GEOLOGICAL SOCIETY · SPRING MEETING
Spring Meeting Abstracts
Explore research presented at the NMGS Annual Spring Meeting. Browse abstracts from 1983 onward, choose a meeting year, or open an abstract to read the full text.
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Abstracts
Explosive rhyolite rolcanism in the Jemez Mountains–Vent and caldera locations and relationships to regional structures
Stephen A. Self1, J. V. Wright1, F. Goff2, J. Gardner1 and G. Heiken2 1Dept. of Geology, Univ. of Texas at Arlington, Arlington, TX, 76010 2Earth and Space Science Division, Los Alamos National laboratory, Los Alamos,
Geology, geochemistry, and Sr-isotope systematics of Polvadera Group rocks, northern Jemez volcanic field, New Mexico
Bradley S. Singer Dept. of Geology, Univ. of New Mexico, Albuquerque, NM, 87131 Basaltic andesite, andesite, dacite, and rhyodacite of the Pliocene Polva-dera Group on La Grulla Plateau display smooth continuous major element trends. The
A preliminary interpretation of some compositional and textural gradients across a mafic facies of the Organ Needle quartz monzonite, New Mexico
Joan B. Beyer1, M. McCurry1 and W. R. Seager1 1Department of Earth Science, New Mexico State University, Box 3AB, Las Cruces, NM, 88003 The Organ Needle Quartz Monzonite was the earliest major intrusive phase of
Bedrock influence on semiarid drainage basin evolution in the southeastern Colorado Plateau, New Mexico–Implications for evaluation of stable landscapes
Thomas F. Bullard Department of Geology, University of New Mexico, Albuquerque, NM, 87131 Soils-geomorphic studies and basin morphometric and morphologic analysis form the basis for evaluating the influence of differing bedrock lithology on the geomorphic
How do you want 9,347,473 acres of national forest land in New Mexico managed? (abs.)
Tom Collins Minerals Management USDA, Forest Service (R-3), Federal Building, 6th Floor, 517 Gold Ave., S.W., Albuquerque, NM, 87102 Each of the six National Forests in New Mexico are developing precedent-setting land management plans. These
Silicic pyroclastic deposits of the Puye Formation, Jemez Mountains, New Mexico
Bruce N. Turbeville1 and Stephen A. Self1 1Dept. of Geology, Univ. of Texas at Arlington, Arlington, TX, 76019 The late Pliocene Puye Formation is a 2 to 3 my oId volcaniclastic alluvial fan sequence that
An integrated isotopic/physical approach to a numerical model of ground-water flow in the San Juan Basin, New Mexico
M. K. Tansey1 and F. M. Phillips2 1IT Corporation, 2340 Alamo, S.E., Albuquerque, NM, New Mexico, 87106 2Geoscience Department, NMIMT, Socorro, NM, 87801 A quasi-three-dimensional numerical model of groundwater flow in the Tertiary aquifers of
An isotopic investigation of ground water in the central San Juan Basin, New Mexico–Paleoclimatic implications
M. K. Tansey1, F. M. Phillips2 and L. E. Peeters2 1IT Corporation, 2340 Alamo, S.E., Albuquerque, NM, 87106 2Geoscience Department, NMIMT, Socorro, NM, 87801 Carbon-14, oxygen-18, deuterium, and noble gases were measured in 35 wells
Organic compounds in epithermal ore depositing fluids
Gail Hodge1 and David I. Norman1 1Department of Geoscience, New Mexico Institute of Mining and Technology, Socorro, NM, 87801 Fluid inclusions in samples from epithermal ore veins were analyzed by mass spectrometry to determine the
Punctuated evolution of a Late Cretaceous ceratopsian dinosaur from New Mexico
Adrian P. Hunt1 and Spencer G. Lucas2 1New Mexico Bureau of Mines and Mineral Resources, Socorro, NM, 87801 2Department of Geology, University of New Mexico, Albuquerque, NM, 87131 It is difficult to test models of
Possible cause of an earthquake swarm in the central Rio Grande rift
Stephen P. Jarpe1 and Allan R. Sanford1 1Geoscience Department and Geophysical Research Center New Mexico Institute of Mining and Technology, Socorro, NM, 87801 Between February 25 and March 16, 1983, an earthquake swarm consisting of
Ortega Quartzite at Cerro Azul
Gerald J. Kepes Department of Geology, University of New Mexico, Albuquerque, NM Cerro Azul is a block of Precambrian quartzite located 35 km southwest of Taos in the Rio Grande rift. The quartzite at Cerro
Middle Jurassic stratigraphy and fossil fishes, Bull Canyon, Guadalupe County, east-central New Mexico
Kenneth K. Kietzke1 and Spencer G. Lucas1 1Department of Geology, University of New Mexico, Albuquerque, NM, 87131 In Bull Canyon in east-central New Mexico (S1/2, T9N, R26E) a lacustrine interval within the eolian Exeter Sandstone
Bivalves from the Red Tanks Member, Madera Formation (Upper Pennsylvanian-Lower Permian) of central New Mexico
Barry S. Kues Dept. of Geology. University of New Mexico, Albuquerque, NM The Red Tanks Member in the Lucero Mesa area west of Los Lunas consists predominantly of alternating marine limestones, calcareous shales and nonmarine
Heat flow in the Mesilla Bolson, southern Rio Grande rift, New Mexico
J. T. Snyder1 and Chandler A. Swanberg 1Department of Earth Sciences, New Mexico State University, Las Cruces, NM, 88003 An extensive heat flow data base representing over 140 shallow and intermediate geothermal test wells is
Precambrian stratigraphy, structure, and metamorphism in the Tusas Mountains, New Mexico–A progress report
Michael L. Williams Department of Geology, University of New Mexico, Albuquerque, NM, 87131 Precambrian rocks of the Tusas Mountains of northern New Hexico can be divided into two main Iithologic units. The older unit ranges
Structure and epithermal silver mineralization in the Hermosa mining district, Sierra County, New Mexico
Mark D. Shepard The University of Texas, EI Paso, TX The Hermosa mining district is situated among the eastern foothills of the Black Range in southwest New Mexico and comprises a block of welI-faulted ground
Conodont color alteration–A possible exploration tool for ore deposits
Kevin H. Cook1, David I. Norman1 and David Johnson1 1Department of Geoscience, New Mexico Institute of Mining and Technology, Socorro, NM, 87801 Conodont elements, which are microscopic toothlike hardparts of an unknown organism, irreversibly change
Geology and geochemistry of the rhyolite-hosted tin deposits, northern Black Range and the Sierra Cuchillo, southwestern New Mexico
Ted L. Eggleston1 and David I. Norman1 1Geoscience Department New Mexico Tech, Socorro, NM, 87801 Tertiary age (28 m.y.) high-silica, high-potassium rhyolite lavas host a number of tin occurrences in the northern Black Range and
Geology of the Red River mining district, Taos County, New Mexico
Karl M. Emanuel1, Michael W. Selke1 and Gary A. Parkison1 1NICOR Mineral Ventures, Inc., Albuquerque, NM The Red River Mining District is centered on the town of Red River, nestled within the Sangre de Cristo
Geology of the Palm Park barite deposit, southern Caballo Mountains, Dona Ana County, New Mexico
Bradford E. Filsinger University of Texas, EI Paso, TX Jasperoid-barite-fluorite-quartz-calcite mineralization of the Palm Park deposit occurs at and just below the Silurian Fusselman Dolomite-Devonian Percha Shale contact along the crest of a N.34°W. trending
GEOCHRONOLOGY AND GEOCHEMISTRY OF PROTEROZOIC METAMORPHIC ROCKS, NEDERLAND QUANDRANGLE, COLORADO
M. S. Abashian1 and D. G. Brookins1 1Department of Geology, University of New Mexico, Albuquerque, NM, 87131 The Proterozoic metamorphic rocks surrounding the Eldora/Bryan Mountain stock, Nederland Quandrangle, Colorado, yield Rb-Sr whole-rock ages of 1775
THE STRUCTURAL CONTROL OF EPITHERMAL VEIN DEPOSITS IN WESTERN NORTH AMERICA
John Drier Sage Associates, Inc., 48 N. Tucson Blvd., Suite B, Tucson, AZ, 85716 The epithermal vein deposits of western North America, which are found throughout a region of some 800,000 km sq, occur in
THE MINERALOGY AND GEOCHEMISTRY OF THE SOUTHERN AMETHYST VEIN SYSTEM AT CREEDE, COLORADO
Mark P. Hemingway1 and David I. Norman1 1Department of Geoscience, New Mexico Institute of Mining and Technology, Socorro, NM, 87801 The Amethyst vein system is an epithermal caldera-associated Ag-base metal deposit. Historically, the southern end