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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1994
EVIDENCE FOR THE RELATIVE TIMING AND CHARACTER OF PROTEROZOIC DEFORMATION AND METAMORPHISM IN THE LADRON MOUNTAINS, NEW MEXICO
Terry R. Pollock1, Laurel B. Goodwin1, Paul W. Bauer2 and Samuel A. Bowring3 1New Mexico Institute of Mining and Technology, Socorro, NM, 87801 2New Mexico Bureau of Mines and Mineral Resources, Socorro, NM, 87801 3Dept.
A MacIntosh-based system for computer-aided mapping
Steven Ralser Dept. of Geoscience, New Mexico Tech, Socorro, NM, 87801 The use of personal computer systems with a graphical user interface make it possible to use existing CAD software to produce publication quality geologic
Pliocene fossil snakes from the Camp Rice Formation, Palomas Basin, southern New Mexico
Spencer G. Lucas1, A. B. Heckert1 and P. L. Sealey1 1New Mexico Museum of Natural History & Science, 1801 Mountain Road N.W., Albuquerque, NM, 87104 One of us (PLS) collected a partial skeleton of a
The Rio Puerco database and human resource catalog: Assembling information for future research and management of the Rio Puerco drainage basin, northwest-central New Mexico
A. Cross1, C. Gorbach2, R. L. Davis3, D. W. Love4 and F. Luo4 1New Mexico Tech, Socorro, NM, 87801 2Bureau of Reclamation, 505 Marquette Ave NW, Suite 1313, Albuquerque, NM, 87102-2162 3 2 Maple Street,
Chlorine-36 surface exposure determinations of eruption ages for Quaternary lava flows of the Zuni-Bandera volcanic field
Nelia W. Dunbar1 and F. M. Phillips1 1Department of Geoscience and New Mexico Bureau of Mining and Mineral Resources, New Mexico Institute of Mining and Technology, Socorro, NM, 87801 As part of a 1993 field
U238-Th230 diequilibirum in young basalts: Implications for eruptive ages, residence times and petrogenesis
K. W. W. Sims1, D. J. DePaolo2, M. T. Murrell3 and W. S. Baldridge3 1Berkeley Center for Isotope Geochemistry, Dept. of Geology, U.C. Berkeley and Geophysics, and LANL, Berkeley, CA, 94720 2Berkeley Center fat Isotope
Geochemical investigations of the ultramafic mantle xenoliths at Kilbourne Hole, Potrillo volcanic field, southern New Mexico
C. A. Long University of Texas at EI Paso, EI Paso, TX, 79968 Approximately 60 mantle derived peridotites and pyroxenites were collected from Kilbourne Hole, one of several maars associated with basanitic flows within the
New geologic map of the Precambrian rocks in the Tijeras 7.5-minute quadrangle: Implications from the Proterozoic to the Tertiary
Eric Kirby1 and Karl E. Karlstrom1 1Dept. of Earth and Planetary Sciences, University of New Mexico, Albuquerque, NM, 87131 We present a new 1: 12,000 map and cross section of the Proterozoic rocks of the
Petrology and petrogenesis of the Rio Puerco basalts, west-central New Mexico
R. Bruce Hallett New Mexico Institute of Mining and Technology, Socorro, NM, 87801 The elemental and isotopid signatures of both asthenospheric and lithospheric portions ofthe mantle (acknowledged to be source reservoirs during continental extension-related magmatism)
Applications of the 40Ar/39Ar dating method to the thermochronology of New Mexico
Matthew T. Heizler New Mexico Bureau of Mines and Mineral Resources, Socorro, NM, 87801 Because geologic processes such as intrusion of plutonic bodies, movement of hydrothermal fluids, metamorphism, tectonism and sedimentation and erosion involve the
Evidence for low-angle detachment faulting in southwestern New Mexico based on reconnaissance structural studies of the Little Hatchet Mountains
Karl E. Karlstrom1, J. E. Andrew1, D. P. Cederquist1, C. G. Daniel1, S. N. Hayden1, B. R. Ilg1, E. Kirby1, M. D. Melker1, E. M. Romano1, H. D. Rowe1 and G. Savarese1 1University of New
Vertebrate fauna of the Bursum Formation (Lower Permian: Wolfcampian), Socorro County, central New Mexico
Adrian P. Hunt1, R. M. Colpitts2, S. G. Lucas3 and J. Zidek4 1Department of Geology; University of Colorado at Denver, Campus Box 172, PO Box 173364, Denver, CO, 80217-3364 2Department of Geoscience, New Mexico Institute
Environmental geochemistry of stream sediments from the upper Pecos River, northern New Mexico: A process report
Lynn A. Brandvold1 and Virginia T. McLemore1 1New Mexico Bureau of Mines and Mineral Resources, Socorro, NM, 87801 Water quality of the Pecos River has regional and international concerns as the demand for water for
Trackway evidence for tetrapod predation from the early Permian of southern New Mexico
Adrian P. Hunt1, Martin G. Lockley1 and Spencer G. Lucas2 1Department of Geology, University of Colorado at Denver, Campus Box 172, PO Box 173364, Denver, CO, 80217-3364 2New Mexico Museum of Natural History, 1801 Mountain
El Calderon, a polygenetic basaltic cinder cone in the Zuni-Bandera volcanic field, Cibola County, New Mexico: Paleomagnetic and geochemical evidence
Tracy E. Cascadden1, J. Carney2, A. W. Laughlin3, K. Reid2 and A. M. Kudo1 1Department of Earth and Planetary Sciences, University of New Mexico, Albuquerque, NM, 87131 2ICF Kaiser Engineers, Inc., Los Alamos, NM 3Los
Some observations concerning the relationship between the New Mexican tholeiitic and alkaline lavas of upper Cenozoic age
Libby Anthony1 and Jane Poths2 1Dept. of Geological Sciences, UTEP, EI Paso, TX, 79986 2Isotope and Nuclear Chemistry, Los Alamos National Laboratory, Los Alamos, NM, 87545 We will explore in this presentation some observations pertaining
Single-crystal 40Ar/39Ar provenance ages and polarity stratigraphy of rhyolitic tuffaceous sandstones of the Thurman Formation (late Oligicene?), Rincon Hills and Caballo Mountains, New Mexico
Jenny D. Boryta1 and William C. McIntosh1 1New Mexico Tech and NM Bureau of Mines and Mineral Resources, Socorro, NM, 87801 The Thurman Formation Was sampled in two localities along the Rio Grande rift for
Proterozoic and Cenozoic deformational history of the northern Sandia Mountains, New Mexico
C. L. Andronicos1 and Karl E. Karlstrom1 1Dept. of Earth and Planetary Sciences, Univ. of New Mexico, Albuquerque, NM, 87131-1116 New detailed mapping (1:6000) of Proterozoic rocks SW of the town of Placitas, New Mexico,
The Potrillo volcanic field, southern Rio Grande rift: 3He surface exposure dates and petrogenetic considerations
Wendi J. W. Williams1 and J. Poths2 1Geological Sciences, University of Texas at El Paso, EI Paso, NM, 79968 -0555, wwilliam@dillon.geo.ep.utexas.edu 2INC-6, Los Alamos National Laboratory, Los Alamos, NM, 87545 We are investigating helium isotope
Constraints on the deformational history of the Tijeras fault zone, north-central New Mexico
John C. Abbott1 and Laurel B. Goodwin1 1Department of Geoscience, New Mexico Tech, Socorro, NM, 87801 The Tijeras fault zone extends from north of the Manzanita Mountains northeast to the southernmost Sangre de Cristo Mountains.
A geochemical comparison of Mid-Tertiary and Upper Cenozoic mantle sources: Basalts of southern New Mexico
Nancy J. McMillan Dept. Geological Sciences, New Mexico State University, Las Cruces, NM, 88003 Upper Cenozoic and Mid-Tertiary basalts throughout the western United States have distinct differences in major element, trace element, and isotopic composition.
Jemez River terraces: Preliminary constraints on Quaternary incision, terrace ages, and breaching of the Valles Caldera, Jemez Mountains, New Mexico
John B. Rogers Department of Earth and Planetary Sciences, University of New Mexico, Albuquerque, NM, 87131 The Jemez Mountains volcanic field in northern New Mexico, erupted catastrophically at 1.12 Ma, depositing the upper Bandelier Tuff
40Ar/39Ar geochronology of late Miocene to Pleistocene basalts of the Zuni-Bandera, Red Hill-Quemado, and Potrillo volcanic fields, New Mexico
William C. McIntosh New Mexico Bureau of Mines and Mineral Resources, Socorro, NM, 87801 New 40Ar/39Ar age detenninations of basalts from the Zuni-Bandera, Red Hill-Quemado, and Potrillo volcanic fields have been obtained as part of
Characteristics of an early Pennsylvanian cycle in the Big Hatchet Mountains of New Mexico
E. W. Fry1 and D. B. Johnson1 1Department of Geoscience, New Mexico Institute of Mining and Technology, Socorro, NM, 87801 As part of a larger study of cyclic sedimentation, a locally restricted karst surface was