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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2011
An assessment of provenance and maximum depositional ages using detrital zircons from Proterozoic, Cambrian, Pennsylvanian, and Cretaceous sandstones, southwestern New Mexico
J. M. Amato Dept. Geological Sciences, New Mexico State University, Las Cruces, NM, 88005, amato@nmsu.edu Detrital zircons from sandstones from southern New Mexico were analyzed for U-Pb ages using LA-ICP-MS. These include: (1) Proterozoic quartzite
Geology, alteration, and mineralization of the Copper Flat porphyry copper deposit, southwestern New Mexico
S. M. Drueckhammer, A. R. Campbell and W. X. Chavez The Copper Flat deposit, located in southwestern New Mexico, is a Laramide porphyry copper deposit with associated molybdenum, gold, and minor silver. The hydrothermal evolution
Neogene age of decollement-style faulting in Permian Yeso Formation, Sierra Larga, Socorro County, New Mexico
S. Flores, G. Axen and S. M. Cather East of Socorro, NM, several east-dipping, normal-separation faults root into a subregionally developed low-angle fault system in evaporites of the Permian Yeso Formation (Cather, 2010, NMGS Guidebook).
The eruptive history and evidence for protracted pluton emplacement associated with the Organ caldera, south-central New Mexico
M. Zimmerer and W. C. McIntosh Ar/Ar dating of volcanic and plutonic rocks related to the Organ caldera, southcentral New Mexico, indicates that magmatism spanned at least 2 Ma between 36.4 and 34.4 Ma. The
Correlation of Oligocene ash flow tuffs of the Bell Top Formation using laser-induced breakdown spectroscopy
N. J. McMillan, M. Dawkins and S. Carpenter Ash flow tuffs represent important marker beds for many types of research, including volcanology, tectonics, archeology, and soil science. Traditional methods for tuff correlation include mapping, mineralogy,
The Upper Triassic Whitaker (Coelophysis) Quarry, Ghost Ranch, Rio Arriba County, New Mexico, is Norian
J. A. Spielman, S. G. Lucas, L. H. Tanner, L. F. Rinehart, A. B. Heckert, R. M. Sullivan and A. P. Hunt The Upper Triassic Whitaker (= Ghost Ranch, = Coelophysis) quarry is known for
Western U.S. upper mantle structure: revealing links between small-scale mantle convection and surface geologic activity
B. Schmandt1 and E. Humphreys2 1University of Oregon, Eugene, OR 2University of Oregon, Eugene, OR We invert P and S teleseismic travel-time residuals from the USArray and more than 1800 additional stations for 3-D mantle
The topography of the western U.S. and its relationship to upper mantle processes
D. Coblentz and K. E. Karlstrom The topography of the Earth’s surface provides important information for regional and global geomorphic studies because it reflects the interplay between tectonic-associated processes of uplift and climate- associated processes
Neogene and ongoing dynamic uplift of the Rocky Mountains due to mantle convection, and its surface manifestations
K. E. Karlstrom, A. Darling, L. J. Crossey, R. Crow, D. Coblentz, W. Oiumet, E. Kirby, J. Van Wikk, B. Schmandt, S. A. Kelley, M. T. Heizler, R. Aster, J. MacCarthy, G. Lazear, A. Aslam,
Thermochronologic constraints on the exhumation history of the Colorado Plateau – Rocky Mountain – Rio Grande rift region
S. A. Kelley, C. E. Chapin, K. E. Karlstrom, D. Stockli, M. Hoffman, J. Lee, R. McKeon and R. V. Garcia A regional compilation of apatite fission-track (AFT) and (U-Th)/He (AHe) data from surface and
Cenozoic intrusive and exhumation history of the Elk and West Elk Mountain plutons, southwest Colorado
R. V. Garcia, S. A. Kelley and M. T. Heizler The Elk and West Elk Mountains of southwest Colorado are dotted with Mid-Cenozoic plutons that can provide important geochronological and thermochronological data about the transitional
A north-flowing Miocene (?) ancestral Pecos River in southeast New Mexico: a record of Late Paleogene-Early Neogene epeirogeny)
S. M. Cather The Gatuña Formation of southeastern New Mexico consists of fluvial and eolian deposits within the modern valley of the Pecos River and nearby areas to the east and west. The Gatuña is
Dynamic topography of the Great Plains: Evidence from fluvial incison and exhumation in New Mexico and Colorado
A. Nereson, S. Brown, K. E. Karlstrom, J. Stroud, W. C. McIntosh and M. T. Heizler Fluvial incision data from the Great Plains of New Mexico and Colorado show differential incision across broad (50-100 km)
Magmatic constraints on the enigmatic Colorado Mineral Belt
J. D. Feldman, M. T. Heizler, K. E. Karlstrom and S. A. Kelley The Colorado Mineral Belt (CMB) is a Laramide (75 to 40 Ma) magmatic lineament that trends NE from the Four Corners region
Xenowhiffs: Mantle gases in hydrologic systems
L. J. Crossey and K. E. Karlstrom Throughout the western U.S., Quaternary travertine and lacustrine carbonate deposits record long-lived interactions of deeply-sourced (“endogenic”) carbonic fluids with the near-surface hydrologic regime. These were deposited by springs
Microbial ecosystems at depth: Contrasts in nutrient and other environmental gradients between natural caves and ultra-deep mines
P. J. Boston1 and T. L. Kieft2 1Earth and Environmental Sciences Dept., New Mexico Institute of Mining and Technology, 801 Leroy Place, Socorro, NM, 87801 2National Cave and Karst Research Institute,, 1400 Commerce Dr., Carlsbad,
Geochronology, geochemistry, and tectonic occurrence of large travertine deposits in New Mexico and Arizona
A. Priewesch, L. J. Crossey, E. Embid, K. E. Karlstrom, V. Polyak, Y. Asmerom and J. W. Ricketts New Mexico and Arizona host several large travertine deposits (>20-60 km2 with thicknesses ranging from 15 to
The Eupelycosaur Dimetrodon from the lower Permian Abo Formation, Fra Cristobal Mountains, Sierra County, New Mexico
S. K. Harris, S. G. Lucas and L. F. Rinehart A neural spine from the lowermost Abo Formation (Wolfcampian) is the first recorded occurrence of the eupelycosaur Dimetrodon from the Fra Cristobal Mountains of Sierra
Dimetrodon (Eupelycosauria: Sphenacontidae) from the lower Permian Abo Formation, Socorro and Torrance counties, New Mexico
K. L., Jr. McKeighen, H. W. McKeighen, A. K. Cantrell, T. L. Suazo, S. G. Lucas, J. A. Spielman, S. K. Harris and L. F. Rinehart Abstract-Here we add to the sparce record of Dimetrodon