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
A chronosequence study of soils developing on basalt flows in an arid environment, the Potrillo volcanic field, Dona Ana county, New Mexico
Martha C. Eppes1 and Bruce J. B. Harrison1 1Earth and Environmental Science Department, New Mexico Institute of Mining and Technology, Socorro, NM, 87801 One of the most widely referenced soil-geomorphic studies in the US is
A climosequence on early Holocene fluvial terraces on the south edge of the Albuquerque-Belen Basin in the Rio Grande rift
Marsha Fronterhouse University of New Mexico, Albuquerque, NM, 87131 Climate is one of several important variables that influences the formation of soils. Recent documented increases in desertification threaten to significantly alter the environment of many
Chronology and thermal history of potassium metasomatism in the Socorro, New Mexico area: Evidence from 40Ar/39Ar dating and fission track analysis
Nelia W. Dunbar1 and D. Miggins1 1New Mexico Bureau of Mines and Mineral Resources and Earth and Environmental Science Department, New Mexico Tech, Socorro, NM, New Mexico, 87801 Argon 40/39 dating and fission track analysis
Cambrian plutonism in southern New Mexico: The Florida Mountain intrusions
Sheryl D. Ervin1 and Nancy J. McMillan1 1Department of Geological Sciences, New Mexico State University, Las Cruces, NM, 88003, servin@nmsu.edu Late Cambrian plutonic rocks, dated at 503 ± 10 Ma U-Pb zircon date (Evans and
P-T histories of metasedimentary xenoliths from the Navajo volcanic field: Implications for Proterozoic crustal structure beneath the Colorada Plateau
Jane Selverstone1, K. Karlstrom1 and Aurora Pun1 1Dept. of Earth and Planetary Sciences, Univ. of New Mexico, Albuquerque, NM, 87131-1116, selver@unm.edu Preliminary examination of 85 crustal xenoliths from 6 diatremes in the Navajo Volcanic field
40Ar/39Ar dating of the Cerro Toledo Rhyolite, Jemez volcanic field, New Mexico: Timing of eruptions between two caldera collapse events
Terry L. Spell1 and Ian McDougall2 1Dept. of Geosciences, Univ. of Houston, Houston, TX, Texas, 77204 2Research School of Earth Sciences, The Australian National University, Canberra, 0200, Australia The Cerro Toledo Rhyolite (CTR) comprises domes
Correlation and relative ages of Quaternary piedmont surfaces west of Socorro, New Mexico
J. Bruce J. Harrison1, R. Chamberlin1, E. Shearer1 and Fall 1995 Soils Class1 1Earth and Environmental Sciences Department and New Mexico Bureau of Mines and Mineral Resources, New Mexico Tech, Socorro, NM, 87801 Geologic mapping
Soil toposequences and soil catenas
B. Harrison1 and M. Eppes1 1Earth and Environmental Science Department, New Mexico Tech, Socorro, NM, 87801 A soil toposequence is a sequence of soils located on different positions down a slope profile. A soil catena
Triassic stratigraphy around the Nacimiento and Jemez uplifts, northern New Mexico
Andrew B. Heckert1 and Spencer G. Lucas2 1Department of Earth and Planetary Sciences, University of New Mexico, Albuquerque, NM, 87131 2New Mexico Museum of Natural History and Science, 1801 Mountain Road N.W., Albuquerque, NM, 87104
Regional litho- and sequence stratigraphy of the lower Chinle Group, west-central New Mexico and eastern Arizona
Andrew B. Heckert Department of Earth and Planetary Sciences, University of New Mexico, Albuquerque, NM, 87131-1116 Lower Chinle Group strata in west-central New Mexico and eastern Arizona comprise a 70-150 m thick tectonosequence consisting of
Vertebrate paleontology, biostratography, and biochronology of the lower Chinle Group, Zuni Mountains, New Mexico, and St. Johns and Petrified Forest National Park, Arizona
Andrew B. Heckert Department of Earth and Planetary Sciences, University of New Mexico, Albuquerque, NM, 87131-1116 Prolific quarries in Arizona have produced extensive collections ofLate Triassic (late Carnian) tetrapods. These quanies include numerous vertebrate collections
Geochronology as it pertains to the public
Mathew T. Heizler New Mexico Bureau of Mines and Mineral Resources, New Mexico Tech, Socorro, NM, 87801 Radioactivity is not something which endears its self unto the public. Aside from specialized medical uses, irradiation for
Tectonic geomorphology of the Sandia Mountains and eastern piedmont of the Albuquerque Basin
H. Gustafson Department of Earth and Planetary Sciences, University of New Mexico, Albuquerque, NM, 87131 The middle Rio Grande valley is presently experiencing a rapidly growing population. Large cities in the western interior, such as
1.7-1.4 Ga polymetamorphic history of the Big Thompson Canyon, northern Colorado Front Range
M. Hodgins1 and J. Selverstone1 1Dept. of Earth & Planetary Sciences, UNM, Albuquerque, NM, 87131-1116, mhodgins@unm.edu Recent work in the Proterozoic of southwest North America suggests that the ca. 1.4 Ga metamorphic and deformational events
Cooling histories of mountain ranges in the southern Rio Grande rift based on apatite fission-track analysis: A reconnaissance survey
Shari A. Kelley1 and Charles E. Chapin2 1Dept. of Earth and Environmental Sciences, New Mexico Tech, Socorro, NM, 87801 2New Mexico Bureau of Mines and Mineral Resources, Socorro, NM, 87801 Forty-nine apatite fission-track (AFT) and
Ground-water dating and other uses of environmental isotopes in groundwater studies
Peggy S. Johnson New Mexico Bureau of Mines and Mineral Resources, Socorro, NM, 87801 Naturally occurring isotopes that exist in water in the hydrologic cycle have been used in investigations of ground water for decades.
Rotated and nonrotated porphyroblasts
Brad R. Ilg Department of Earth and Planetary Sciences, University of New Mexico, Albuquerque, NM, 87131, bilg@unm.edu Metamorphic porphyroblasts in supracrustal rocks of the Granite Gorge Metamorphic Suite exposed in the Upper Grainte Gorge of
Evidence of gregarious behavior in dinosaurs from a new track-site, Mesa Rica Sandstone (Lower Cretaceous), northeastern New Mexico
Adrian P. Hunt1 and B. R. Watts1 1Mesalands Museum, Mesa Technical College, 911 South Tenth Street, Tucumcari, NM, New Mexico, 88401 A new tracksite has been located near Mills, Harding County, New Mexico in the
Laramide contractional deformation in the Sandia Mountains
Karl E. Karlstrom1 and Charles E. Ferguson2 1Department of Earth and Planetary Sciences, University of New Mexico, Albuquerque, NM, 87131 2Arizona Geological Survey, Tucson, AZ, 85701 Recent mapping of the Placitas and Sandia Park Quadrangles
Taphodacies and early dinosaur evolution: An example from the Bull Canyon Formation (Upper Triassic: Norian), east-central New Mexico
Adrian P. Hunt1 and A. J. Newell2 1Mesalands Museum, Mesa Technical College, 911 South Tenth Street, Tucumcari, NM, New Mexico, 88401 2British Geological Survey, Exeter, England The Norian Bull Canyon Formation of east-central New Mexico
Pliocene and Pleistocene displacement history of the Socorro Canyon fault, central Rio Grande rift
Richard M. Chamberlin1 and Bruce Harrison2 1New Mexico Bureau of Mines and Mineral Resources, Socorro, NM, 87801 2Dept. Earth and Environmental Science, New Mexico Tech, Socorro, NM, 87801 The Socorro Canyon fault (SCF) is a
An addition to the vertebrate ichnofauna of the Redonda Formation (Upper Triassic: Rhaetian), east-central New Mexico
W. D. Cotton1, A. P. Hunt2, J. E. Cotton3 and M. G. Lockley4 1National Radio Astronomy Observatory, 520 Edgemont Road, Charlottesville, VA, 22903-2475 2Mesalands Museum, Mesa Technical College, 911 South Tenth Street, Tucumcari, NM, New
Evidence for herding behavior in ornithopod dinosaurs from the Dakota Sandstone of northeast New Mexico
J. E. Cotton1, W. D. Cotton2 and A. P. Hunt3 1Charlottesville High School, 1400 Melbourne Rd., Charlottesville, VA, 22901 2National Radio Astronomy Observatory, 520 Edgemont Rd., Charlottesville, VA, 22903-2475 3Mesalands Museum, Mesa Technical College, 911
Late Pennsylvanian marine faunas of the Madera Formation, Jemez Springs area, north-central New Mexico
D. E. Corrao1 and B. S. Kues1 1Department of Earth and Planetary Sciences, University of New Mexico, Albuquerque, NM, 87131 Although Upper Pennsylvanian (Missourian-Virgilian) strata near Jemez Springs are profusely fossiliferous, these diverse faunas have