A5090086069- Geological and Geochemical Analysis
- Geology and Paleoclimatology Research
- earthquake and tectonic studies
- Geochemistry and Geologic Mapping
- Geological formations and processes
- High-pressure geophysics and materials
- Paleontology and Stratigraphy of Fossils
- Archaeology and Natural History
- Hydrocarbon exploration and reservoir analysis
- Geological Studies and Exploration
- Hydrology and Sediment Transport Processes
- Botany, Ecology, and Taxonomy Studies
- Groundwater and Isotope Geochemistry
- Geological and Geophysical Studies
- Groundwater flow and contamination studies
- Geological Modeling and Analysis
- Pleistocene-Era Hominins and Archaeology
- Landslides and related hazards
- Geological and Tectonic Studies in Latin America
- Radioactive element chemistry and processing
- Isotope Analysis in Ecology
- Marine and environmental studies
- Botany and Geology in Latin America and Caribbean
- Seismic Imaging and Inversion Techniques
- Methane Hydrates and Related Phenomena
University of New Mexico
2016-2025
Planetary Science Institute
1994-2023
Grand Canyon University
2019
Northrop University
2019
Arizona State University
2019
Astrogeology Science Center
2019
United States Geological Survey
2019
University of California, Berkeley
2019
University of Oregon
2019
Northrop Grumman (United States)
2014-2016
Prior to the Grenvillian continentcontinent collision at about 1.0 Ga, southern margin of Laurentia was a long-lived convergent that extended from Greenland California.The truncation these 1.8-1.0Ga orogenic belts in southwestern and northeastern suggests they once farther.We propose Australia contains continuation southwest Baltica northeast.The combined system comparable length modern American Cordilleran or Alpine-Himalayan systems.This plate reconstruction Proterozoic supercontinent...
We determined U-Pb ages for detrital zircons from 26 samples of Paleozoic sandstone the Grand Canyon. Cambrian strata yield mainly ca. 1.44 and 1.7–1.8 Ga that indicate derivation nearby basement rocks Yavapai Province. Devonian contain 1.6–1.8 Ga, 1.34–1.40 520 Ma, suggesting Mazatzal Provinces, midcontinent region, Amarillo-Wichita uplift, respectively. Mississippian record a major change in provenance, with predominantly 415–475 Ma 1030–1190 grains interpreted to have been shed central...
During continent–continent collision, does the downgoing continental plate underplate far inboard of collisional boundary or it subduct steeply into mantle, and how is this geometry manifested in mantle flow field? We test conflicting models for these questions Earth’s archetypal collision forming Himalaya Tibetan Plateau. Air-corrected helium isotope data (3He/4He) from 225 geothermal springs (196 our group, 29 literature) delineate a separating Himalayan domain only crustal with...
A 500 km wide early Proterozoic orogenic belt in Arizona and adjacent areas is divided into lithotectonic blocks by northeast- north-trending shear zones. Structural U-Pb zircon studies suggest that these may have experienced different tectonic histories prior to their juxtaposition thrust strike-slip movements on northwestern province, here called the Yavapai Province, composed of at least five was assembled about 1700 Ma. southeastern Mazatzal three juxtaposed with province during orogeny,...
Research Article| August 01, 2000 Inversion of Proterozoic extensional faults: An explanation for the pattern Laramide and Ancestral Rockies intracratonic deformation, United States Stephen Marshak; Marshak 1Department Geology, University Illinois, Urbana, Illinois 61801, USA Search other works by this author on: GSW Google Scholar Karl Karlstrom; Karlstrom 2Department Earth Planetary Sciences, New Mexico, Albuquerque, Mexico 87131, J. Michael Timmons Geology (2000) 28 (8): 735–738....
Northeast-striking tectonic provinces and boundaries were established during 1.8–1.6-Ga assembly of juvenile continental lithosphere in the southwestern United States. This grain repeatedly has influenced subsequent intracratonic tectonism magmatism. After 200 m.y. stability, cratonic was affected by regional, ∼1.4-Ga, dominantly granitic magmatism associated that reactivated older northeast-striking shear zones Proterozoic accreted terranes, but not Archean lithosphere. In contrast, 1.1-Ga,...
Research Article| October 01, 1994 Mesoproterozoic contractional orogeny in western North America: Evidence from ca. 1.4 Ga plutons M. W. Nyman; Nyman 1Department of Earth and Planetary Sciences, University New Mexico, Albuquerque, Mexico 87131 Search for other works by this author on: GSW Google Scholar K. E. Karlstrom; Karlstrom Kirby; Kirby C. Graubard 2Department Geological California, Santa Barbara, California 93106-9630 Author Article Information Publisher: Society America First...
The correspondence between seismic velocity anomalies in the crust and mantle differential incision of continental-scale Colorado River system suggests that significant mantle-to-surface interactions can take place deep within continental interiors. Rocky Mountain region exhibits low-seismic-velocity associated with atypically high (and rough) topography, steep normalized river segments, areas greatest incision. Thermochronologic geologic data show regional exhumation accelerated starting...
Research Article| July 01, 2009 Degassing of mantle-derived CO2 and He from springs in the southern Colorado Plateau region—Neotectonic connections implications for groundwater systems Laura J. Crossey; Crossey † 1Department Earth Planetary Sciences, University New Mexico, Albuquerque, Mexico 87131, USA †E-mail: lcrossey@unm.edu Search other works by this author on: GSW Google Scholar Karl E. Karlstrom; Karlstrom Abraham Springer; Springer 2Department Geology, P.O. Box 4099, Northern Arizona...
Research Article| November 01, 2008 Model for tectonically driven incision of the younger than 6 Ma Grand Canyon Karl E. Karlstrom; Karlstrom * 11Department Earth and Planetary Sciences, University New Mexico, Albuquerque, 87131, USA *E-mail: kek1@unm.edu. Search other works by this author on: GSW Google Scholar Ryan Crow; Crow L.J. Crossey; Crossey D. Coblentz; Coblentz 22Geodynamics Group, Los Alamos National Laboratory, Alamos, 87545, J. W. Van Wijk Geology (2008) 36 (11): 835–838....
Abstract Seismic structure beneath the contiguous U.S. was imaged with multimode receiver function stacking and inversion of Rayleigh wave dispersion ellipticity measurements. Crust thickness elevation are weakly correlated across U.S., but correlation is ~3–4 times greater for separate areas east west Rocky Mountain Front (RMF). Greater lower crustal shear velocities RMF, particularly in low‐elevation thick crust, consistent deep density as primary cause contrasting crust versus trends....
As rivers transport water and sediment across Earth's surface, they radiate elastic acoustic waves. We use seismic infrasound observations during a controlled flood experiment (CFE) in the Grand Canyon to show that three types of fluvial processes can be monitored from outside channel. First, bed‐load under conditions evolving bed mobility is identified as dominant source between 15 45 Hz. Two lower‐frequency bands also excited by CFE exhibited greater power increases are consistent with...
Research Article| January 01, 2006 Dissected hydrologic system at the Grand Canyon: Interaction between deeply derived fluids and plateau aquifer waters in modern springs travertine Laura J. Crossey; Crossey 1 Department of Earth Planetary Sciences, University New Mexico, Albuquerque, Mexico 87131, USA Search for other works by this author on: GSW Google Scholar Tobias P. Fischer; Fischer Jonathan Patchett; Patchett 2Department Geosciences, Arizona, Tucson, Arizona 85721, Karl E. Karlstrom;...
Research Article| December 01, 1990 Growth, stabilization, and reactivation of Proterozoic lithosphere in the southwestern United States Samuel A. Bowring; Bowring 1Department Earth Planetary Sciences, Washington University, St. Louis, Missouri 63130 Search for other works by this author on: GSW Google Scholar Karl E. Karlstrom 2Department Geology, Northern Arizona Flagstaff, 86011-6030 Author Article Information Publisher: Geological Society America First Online: 02 Jun 2017 Online ISSN:...
Research Article| July 01, 2000 Chuar Group of the Grand Canyon: Record breakup Rodinia, associated change in global carbon cycle, and ecosystem expansion by 740 Ma Karl E. Karlstrom; Karlstrom 1Department Earth Planetary Sciences, University New Mexico, Albuquerque, Mexico 87131, USA Search for other works this author on: GSW Google Scholar Samuel A. Bowring; Bowring 2Department Earth, Atmospheric Massachusetts Institute Technology, Cambridge, 02139, Carol M. Dehler; Dehler Andrew H. Knoll;...
Research Article| October 01, 1987 Tectonic significance of an Early Proterozoic two-province boundary in central Arizona KARL E. KARLSTROM; KARLSTROM 1Department Geology, Northern University, Flagstaff, 86011 Search for other works by this author on: GSW Google Scholar SAMUEL A. BOWRING; BOWRING 2Department Earth and Planetary Sciences, Washington St. Louis, Missouri 63130 CLAY M. CONWAY 3U.S. Geological Survey, 2255 N. Gemini Dr., 86001 GSA Bulletin (1987) 99 (4): 529–538....
Research Article| March 01, 2016 Synchronous opening of the Rio Grande rift along its entire length at 25–10 Ma supported by apatite (U-Th)/He and fission-track thermochronology, evaluation possible driving mechanisms Jason W. Ricketts; Ricketts † 1Department Earth Planetary Sciences, University New Mexico, MSC03-2040, 1 Albuquerque, Mexico 87131, USA †jwrick@unm.edu; jwricketts8@gmail.com Search for other works this author on: GSW Google Scholar Shari A. Kelley; Kelley 2Earth Environmental...