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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1989
Stratigraphy, facies, and paleotectonic history of Mississippian rocks in the San Juan Basin of northwest New Mexico and adjacent areas
Augustus K. Armstrong1 and Lee D. Holcomb2 1U.S. Geological Survey, c/o New Mexico Bureau of Mines and Mineral Resources, Socorro, NM, 87801 2Shell Oil Company Lowermost Mississippian rocks in the San Juan basin of northwest
Folding, faulting, and Proterozoic-age mineralization in the Ortega Quartzite, Copper Hill, Picuris Mountains, northern New Mexico
Paul W. Bauer1 and Michael L. Williams2 1New Mexico Bureau of Mines and Min. Resources, Socorro, NM, 87801 2Dept. of Geology and Geog., Univ. of Massachusetts, Amherst, MA, Massachusetts, 01003 This study integrates new concepts
Stratigraphic problems in northeastern New Mexico–A petrographic approach
G. D. Baron University of New Mexico, Albuquerque, NM, 87131 Lithologic similarities between the uppermost sandstones of the Morrison Formation (Jurassic fluvial), the Lytle Sandstone (Cretaceous fluvial), and the Mesa Rica Sandstone (Cretaceous fluvial) have
Age and Stratigraphy of the Ringbone formation, wouthwestern New Mexico
T. F. Lawton1, G. H. Mack1 and Lucas Spencer2 1Department of Earth and Environmental Sciences, New Mexico Institute of Mining and Technology, Las Cruces, NM, 88003 2New Mexico Museum of Natural History, Box 7010, Albuquerque,
MINERALOGY OF THE CLAY-SIZE FRACTION OF ADOBE SOILS IN NEW MEXICO: IMPLICATIONS FOR USE IN BUILDING MATERIALS
George S. Austin New Mexico Bureau of Mines and Mineral Resources, Socorro, NM, 87801 In 1988, 33 commercial adobe brick producers, 28 pressed-earth-block, and two rammed-earth contractors were located in New Mexico. Extensive analyses of
Analytical electron microscopic characterization of phyllosilicate clays: Electron beam damage and analytical results from the westwater canyon member of the Morrison Formation, San Juan Basin, New Mexico
Paul O. Eberly Department of Geology, University of New Mexico, Albuquerque, NM, 87131 Phyllosilicate clays and associated minerals present unique analytical challenges to the low temperature geochemist. Bulk analytical techniques (wet chemistry, x-ray fluorescence, other)
SUPERLATTICE CLAYS IN THE YESO FORMATION, EAST CENTRAL NEW MEXICO: PRODUCT OF LEONARDIAN HYPERSALINE ENVIRONMENTS AND PROCESSES
John R. Macmillian1 and Joan R. Resnick1 1Geoscience Department, New Mexico Institute of Mining and Technology, Socorro, NM, 87801 Our study, supported by the NMWRRI, revealed the presence in ~15% of our subsurface and surface
ND-SR ISOTOPE SYSTEMATICS AND ERUPTIVE CHARACTERISTICS OF THE ORGAN CAULDRON, SOUTH CENTRAL NEW MEXICO
D. P. Butcher1 and M. McCurry1 1New Mexico state University, Las Cruces, NM, 88003 The 32 Ma Organ Cauldron of south central New Mexico exhibits continuous outcrop exposure of: remnants of the cauldron magma chamber
TIMING AND DISTRIBUTION OF OLIGOCENE IGNIMBRITE ACTIVITY IN THE MOGOLLON-DATIL VOLCANIC FIELD, S.W. NEW MEXICO
William C. McIntosh1 and Charles E. Chapin1 1New Mexico Bureau of Mines and Mineral Resources, Socorro, NM, 87801 40Ar/39Ar age spectra and paleomagnetic analyses tightly constrain the history of ignimbrite volcanism in the 36-24 Ma
REE DEPOSITS IN NEW MEXICO
Virginia T. Mclemore New Mexico Bureau of Mines and Mineral Resources, Socorro, NM, 87801 The rare-earth elements (REE) include a group of 15 chemically similar elements called the lanthanide group since lanthanium is the first
THE YESO TYPE SECTION: STRUCTURAL PROBLEMS AND SUGGESTED SOLUTIONS
Robert M. Colpitts Department of Geosciences, New Mexico Institute of Mining and Technology, Socorro, NM, 87801 The type section of the Yeso Formation was first designated by W. T. Lee in 1909. His section was
THE MINERAL HUNTITE, AN UNUSUAL OCCURRENCE FROM THE FOSSIL FOREST, LATE CRETACEOUS, FRUITLAND FORMATION, SAN JUAN BASIN, NEW MEXICO
Donald L. Wolberg New Mexico Bureau of Mines and Mineral Resources, Socorro, NM, 87801 Huntite is an unusual calcium-magnesium carbonate, CaMg3 (CO3)4, first described in 1953 at Currant Creek, Nevada. Hitherto, huntite occurrences have included:
Fluid inclusions in fossil resin: Recent results
Diane M. Bellis1, David I. Norman2 and D. L. Wolberg3 1Department of Chemistry, New Mexico Institute of Mining and Technology, Socorro, NM, 87801 2Department of Geology, New Mexico Institute of Mining and Technology, Socorro, NM,
Proterozoic granulite facies metamorphism in northern New Mexico
Jeffrey A. Grambling Department of Geology, University of New Mexico, Albuquerque, NM, 87131 Granulite facies metamorphism affected at least 3,000 km3 of the northern Taos and western Cimarron Mountains. Previous work has failed to recognize
Nature of a major Proterozoic tectonic boundary in the Pecos Wilderness, northern New Mexico
Christine A. White1 and J. A. Grambling1 1Department of Geology, University of New Mexico, Albuquerque, NM, 87131 A major tectonic boundary separates two Proterozoic crustal blocks in northern New Mexico. The boundary is a zone
Pennsylvanian stratigraphy and paleontology at the Kinney Brick Company clay pit, Manzano Mountains, Bernalillo County, New Mexico
Phillip Huber1, Spencer G. Lucas1 and Steven N. Hayden1 1New Mexico Museum of Natural History, P.O. Box 7010, Albuquerque, NM, 87194 More than 28 m of the Upper Pennsylvanian (early Virgilian) Pine Shadow Member of
Stratigraphy and depositional environments of the lower part of the Ringbone Formation, Little Hatchet Mountains, southwestern New Mexico
D. A. Wilson Department of Earth Science, New University, Las Cruces, NM, 88003 Approximately 1800 meters of the Ringbone Formation is exposed in the Little Hatchet Mountains in southwest New Mexico. The Ringbone Formation is
Aptian-Albian cephalopod assemblage of the U-Bar Formation, Big Hatchet Mountains, southwestern New Mexico
Michael H. Sandidge Department of Geological sciences, University of Texas, El Paso, TX, 79968 The U-Bar Formation is divided into five members which are, in ascending order: Brown Limestone, Oyster Limestone, Limestone-Shale, Reef Limestone, and
Cretaceous Mancos Formation and Dakota Group in southwestern New Mexico
Spencer G. Lucas New Mexico Museum of Natural History, P.O. Box 7010, Albuquerque, NM, 87194 Upper cretaceous marine strata in southwestern New Mexico have long been referred to as Colorado Shale (Formation), even though the
Hypotheses for the origin of low-angle faults east of the Rio Grande rift, Socorro County, New Mexico–A discussion
Robert M., Jr. Colpitts Department of Geosciences, New Mexico Institute of Mining and Technology, Socorro, NM, 87801 The region east of the Rio Grande rift at Socorro is characterized by high- and low-angle faults as
Mid-Tertiary volcanism, extension, and mineralization in New Mexico: What have we learned these past 40 years?
Wolfgang E. Elston Department of Geology, University of New Mexico, Albuquerque, NM, 87131 Forty years ago, mid-Tertiary volcanic rocks were regarded as mere overburden on Laramide ore deposits. Beginning in 1950, the NMBM&MR sponsored systematic
Stratigraphy of the Peralta Tuff–Implications for the volcanic and structural evolution of the southeastern Jemez volcanic field
Gary A. Smith1 and R. J. Abitz1 1Department of Geology, University of New Mexico, Albuquerque, NM, 87131 Late Miocene tuffs and sediments of the Peralta Tuff Member of the Bearhead Rhyolite provide a partial record
Cyclic clastics and carbonates of the Pennsylvanian Madera Formation, Sandia Mountains, New Mexico–In search of the eustatic signal
Gary A. Smith1 and the 1988 Cyclic Sedimentation Class1 1Department of Geology, University of New Mexico,, Albuquerque, NM, 87131 Pennsylvanian transgressive-regressive (T-R) cycles may be produced by eustasy (including glacioeustasy), autocyclic deltalobe progradation and avulsion,
Carbonate petrography of the limestone-shale member, U-Bar Formation (Aptian-Albian), Sierra Rica, southwestern New Mexico
Rita J. Schuster1 and Russell E. Clemons1 1New Mexico State University, Las Cruces, NM, 88003 The U-Bar Formation of southwestern New Mexioo contains five informal members. In ascending order they are the brown limestone, oyster