Open Access. Powered by Scholars. Published by Universities.®
- Institution
-
- University of Nebraska - Lincoln (912)
- University of Dayton (14)
- University of Kentucky (11)
- Central Washington University (9)
- Missouri State University (9)
-
- Louisiana State University (8)
- University of Arkansas, Fayetteville (8)
- Old Dominion University (6)
- University of New Orleans (5)
- University of South Florida (5)
- Department of Primary Industries and Regional Development, Western Australia (4)
- University of Nevada, Las Vegas (4)
- Stephen F. Austin State University (3)
- University of Southern Maine (3)
- Western Michigan University (3)
- Wilfrid Laurier University (3)
- California Polytechnic State University, San Luis Obispo (2)
- City University of New York (CUNY) (2)
- Coastal Carolina University (2)
- East Tennessee State University (2)
- LSU New Orleans (2)
- Murray State University (2)
- University of South Alabama (2)
- Utah State University (2)
- Wayne State University (2)
- Western Kentucky University (2)
- California State University, San Bernardino (1)
- Claremont Colleges (1)
- Clemson University (1)
- Columbus State University (1)
- Keyword
-
- Nebraska (468)
- Groundwater (99)
- Test (73)
- Hole (72)
- Logs (72)
-
- Water (67)
- Conservation and Survey Division (63)
- Map (61)
- Geology (57)
- Water Survey Paper (53)
- Resource (46)
- Wells (46)
- Irrigation (32)
- Groundwater Nebraska (31)
- Water Nebraska (31)
- Level (29)
- Csd (26)
- News (26)
- Decline (20)
- Rise (20)
- Hydrology (19)
- Report (18)
- Notes (17)
- Resources (17)
- Survey (16)
- Annual (15)
- Registered (15)
- Soil (15)
- Wells Nebraska (15)
- Groundwater Levels (13)
- Publication Year
- Publication
-
- Conservation and Survey Division: Faculty and Staff Publications (875)
- Department of Earth, Environment and Sustainability Faculty Publications (14)
- George E. Condra Publications (11)
- KWRRI Research Reports (10)
- United States Geological Survey: Datasets (10)
-
- Graduate Theses/Dissertations (9)
- All Master's Theses (8)
- Department of Earth and Atmospheric Sciences: Faculty Publications (6)
- Electronic Theses and Dissertations (6)
- LSU Doctoral Dissertations (6)
- 2D Wave Spectral Data, South Arm, Great Salt Lake, Utah (4)
- Graduate Theses and Dissertations (4)
- Robert F. Diffendal, Jr., Publications (4)
- United States Geological Survey: Water Reports and Publications (4)
- Honors Theses (3)
- International Journal of Speleology (3)
- Maine Collection (3)
- OES Faculty Publications (3)
- Theses and Dissertations (Comprehensive) (3)
- Bulletins 4000 - (2)
- Environmental Science and Geology Faculty Research Publications (2)
- Journal of the Arkansas Academy of Science (2)
- Journal of the Department of Agriculture, Western Australia, Series 4 (2)
- LSU Master's Theses (2)
- LSU New Orleans Theses and Dissertations (2)
- Master's Theses (2)
- Masters Theses & Specialist Projects (2)
- OES Theses and Dissertations (2)
- Publications and Research (2)
- Watershed Sciences Faculty Publications (2)
- Publication Type
- File Type
Articles 121 - 150 of 1041
Full-Text Articles in Sedimentology
Bonneville Basin Data, Larry V. Benson
Bonneville Basin Data, Larry V. Benson
United States Geological Survey: Datasets
In the Bonneville Basin folder, all data were reported in: Benson, L.V., Lund, S.P., Smoot, J.P., Rhode, D.E., Spencer, R.J., Verosub, K.L., Louderback, L.A., Johnson, C.A., Rye, R.O., Negrini, R., 2011. The rise and fall of Lake Bonneville between 45 and 10.5 ka. Quaternary International 235: 57-69.
http://digitalcommons.unl.edu/usgsstaffpub/726
General Comment: in most cases an age model based on 14C analyses is not included with the data sets although ones were created for the original publications. Given the general problems with 14C ages in the lakes of the Great Basin, age models based on paleomagnetic secular variation (PSV) are …
Geology Of Northeastern Nebraska And Environs: Cedar, Dakota, And Dixon Counties In Nebraska, And Plymouth And Woodbury County In Iowa, Robert Matthew Joeckel, Dana Divine, P.R. Hanson, Leslie M. Howard
Geology Of Northeastern Nebraska And Environs: Cedar, Dakota, And Dixon Counties In Nebraska, And Plymouth And Woodbury County In Iowa, Robert Matthew Joeckel, Dana Divine, P.R. Hanson, Leslie M. Howard
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Holdrege: Nebraska's State Soil, University Of Nebraska - Lincoln
Holdrege: Nebraska's State Soil, University Of Nebraska - Lincoln
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Holdrege Nebraska State Soil, Nebraska Society Of Professional Soil Scientists
Holdrege Nebraska State Soil, Nebraska Society Of Professional Soil Scientists
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Sedimentary Characteristics And Nutrient Sequestration Of Embanked Floodplains Along The Lower Mississippi River, Mississippi And Louisiana, R M Malitha Rathnayake
Sedimentary Characteristics And Nutrient Sequestration Of Embanked Floodplains Along The Lower Mississippi River, Mississippi And Louisiana, R M Malitha Rathnayake
Master's Theses
The Mississippi River Basin is the largest river basin in North America and the third largest river basin in the world. Most of the corn, soybeans, wheat, cattle, and hogs harvested in the United States come from the Mississippi River Basin and about 58% of the entire drainage basin is croplands. Runoff from these lands carries sediments and nutrients, and the Mississippi River transports these downstream and ultimately deposits them in the Gulf of Mexico. The northern Gulf of Mexico is one of largest human-caused hypoxic zones in the world. Hypoxia is the phenomena where the dissolved oxygen level decreases …
Geology And Paleontology Along Part Of The Niobrara River In Northern Nebraska, Robert Matthew Joeckel, S. T. Tucker, Leslie M. Howard
Geology And Paleontology Along Part Of The Niobrara River In Northern Nebraska, Robert Matthew Joeckel, S. T. Tucker, Leslie M. Howard
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
An Overview Of Secondary Aquifers In Nebraska, Dana Divine, Steven S. Sibray
An Overview Of Secondary Aquifers In Nebraska, Dana Divine, Steven S. Sibray
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Interpretive Geologic Cross Sections Across Lower Platte North Natural Resources District, Nebraska (Ccs-20), Dana Divine
Interpretive Geologic Cross Sections Across Lower Platte North Natural Resources District, Nebraska (Ccs-20), Dana Divine
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Growth Laws For Sub-Delta Crevasses In The Mississippi River Delta: Observations And Modeling, Tara A. Yocum
Growth Laws For Sub-Delta Crevasses In The Mississippi River Delta: Observations And Modeling, Tara A. Yocum
LSU New Orleans Theses and Dissertations
In this study we assessed growth laws of sub-delta crevasses in the Mississippi River delta plain, experimental laboratory deltas, and compared them to previously studied river dominated large deltas worldwide. Metrics for channel and delta geometry for each system were obtained using a combination of geospatial tools, bathymetric datasets, sediment size, and hydrodynamic observations. Most crevasses and experimental deltas appear to obey delta growth laws suggesting that they exhibit planform metrics similar to larger deltas. However, some channels within each system, exhibit outlier behavior (e.g. asymmetric growth) where channel length is much larger than channel width. Hydrodynamic observations and morphodynamic …
Channel Bar Morphology, Distribution, And Mining-Related Geochemistry In The Big River, St. Francois County, Missouri: Implications For Geomorphic Recovery, Lindsay Marie Olson
Channel Bar Morphology, Distribution, And Mining-Related Geochemistry In The Big River, St. Francois County, Missouri: Implications For Geomorphic Recovery, Lindsay Marie Olson
Graduate Theses/Dissertations
Tailings releases associated with large-scale historical Pb mining in St. Francois County, Missouri resulted in system-wide contamination of Pb and excess sediment in the Big River. Previous studies have addressed basin and segment scale variability of the contaminants; however, little is known about reach and bar scale variability. This study addresses how mining sediment inputs influence bar form and geochemistry across a range of scales. Bar sediment samples were collected at 21 reaches and analyzed for particle size and geochemistry, while air photo analysis was used to evaluate channel morphology, bar type, and area. Bar area is initially low in …
Using Cross-Sets For Paleodischarge Estimation And Paleocurrent Vectors In The Parthenon Sandstone, Northwest Arkansas, Sean Robert Parry
Using Cross-Sets For Paleodischarge Estimation And Paleocurrent Vectors In The Parthenon Sandstone, Northwest Arkansas, Sean Robert Parry
Graduate Theses and Dissertations
In this thesis, set thicknesses are used to estimate the paleohydraulics (paleodischarge and give magnitudes for paleocurrent directions) of the ancient river system which deposited the Parthenon Sandstone in northwest Arkansas. Set thickness is the vertical thickness of a group of strata conformable series (Mckee and Weir, 1953); set thickness represents truncated dunes. The goal of this thesis is to: 1) obtain paleodischarge estimates of the Parthenon sandstone via cross-sets and compare the results with previously calculated discharge estimates which use basin area to discharge collation techniques and 2) use paleodischarge estimates calculated within this thesis to give magnitude to …
Results Of Test-Hole Drilling For Observation Well Planning In The Upper Loup Natural Resources District, Fall 2016, Douglas Hallum, Sue Olafsen Lackey
Results Of Test-Hole Drilling For Observation Well Planning In The Upper Loup Natural Resources District, Fall 2016, Douglas Hallum, Sue Olafsen Lackey
Conservation and Survey Division: Faculty and Staff Publications
The High Plains Aquifer underlies much of Nebraska (Figure 1). It is the primary source of groundwater within the Upper Loup Natural Resources District (ULNRD) of central Nebraska (Figure 2). Water derived from the aquifer is an important natural resource for the area and supplies water for recreation, wildlife and agriculture, as well as domestic, municipal, and industrial uses. A general lack of water level observations in the region (Figure 3), recently developed groundwater irrigated acres along the upper Calamus River (Figure 4), falling spring water levels measured in existing irrigation wells (Figure 5), and a stable to falling stream …
Basic Meteorological Data Derived 30-Year Normas (1981-2010) Of Actual Evapotranspiration Rates In Nebraska, Usa, Jozsef Szilagyi
Basic Meteorological Data Derived 30-Year Normas (1981-2010) Of Actual Evapotranspiration Rates In Nebraska, Usa, Jozsef Szilagyi
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Petrographical And Geochemical Changes In Bosnian Stalagmites And Their Palaeo-Environmental Significance, Veronica Chiarini, Isabelle Couchoud, Russell Drysdale, Petra Bajo, Simone Milanolo, Silvia Frisia, Alan Greig, John Hellstrom, Jo De Waele
Petrographical And Geochemical Changes In Bosnian Stalagmites And Their Palaeo-Environmental Significance, Veronica Chiarini, Isabelle Couchoud, Russell Drysdale, Petra Bajo, Simone Milanolo, Silvia Frisia, Alan Greig, John Hellstrom, Jo De Waele
International Journal of Speleology
Detailed petrographic observations have been coupled with trace element and δ13C - δ18O analyses in order to investigate their dynamics in two Holocene Bosnian speleothems. The potential of this multiproxy approach in providing a means to extract palaeo-environmental information from stalagmites whose stable isotope signals are noisy and without obvious trends has been tested. The studied stalagmites are mostly characterized by columnar microcrystalline fabric. At the sub-millimetre scale of lamination, different microcrystalline columnar sub-types (open and closed) have been detected and classified on the basis of the observed porosity and the crystallite size. The presence of …
Mono Lake Data, Larry V. Benson
Mono Lake Data, Larry V. Benson
United States Geological Survey: Datasets
Mono Lake Basin Data\ Depth CalAge TIC TOTC TOC 13C 18O
Mono Lake short cores.xlsx 03.03.2014 19:59:44 0.06 xlsx
Depth PSV age 18O 13C
TIC for Wilson Crk Fm.xlsx 02.03.2014 16:07:10 0.03 xlsx
Ostracode 18O and TE data Wilson Crk Fm.xlsx 10.11.2017 17:43:18 0.12 xlsx
Depth, calendar age, TIC, TOTC, TOC, 13C, and 18O of Mono Lake short cores were reported in:
Benson, L., Linsley, B., Smoot, J., Mensing, S., Lund, S., Stine, S., and Sarna-Wojcicki, A., 2003, Influence of the Pacific Decadal Oscillation on the climate of the Sierra Nevada, California and Nevada: Quaternary Research. Quaternary Research …
Summer Lake Basin Data, Larry V. Benson
Summer Lake Basin Data, Larry V. Benson
United States Geological Survey: Datasets
Summer Lake Basin
Name Date modified Time modified Size MB Extension
Summer Lake Basin\
Depth PSV Age 13C 18O Summer Lake B&B core.xlsx 03.03.2014 16:51:12 0.03 xlsx
In the Summer Lake Basin folder:
Depth, PSV age, 18O, 13C data for Summer Lake core B&B are reported in:
Benson, L., Lund, S., Negrini, R., Linsley, B., and Zic, M. 2003. Response of North American Great Basin lakes to Dansgaard-Oeschger oscillations. Quaternary Science Reviews 22: 2,239-2,251.
General Comment: In most cases an age model based on 14C analyses is not included with the datasets although ones were created for …
Great Basin Surface Water And Precipitation Isotope Data, Larry V. Benson
Great Basin Surface Water And Precipitation Isotope Data, Larry V. Benson
United States Geological Survey: Datasets
In the Great Basin Surface Water and Precipitation Isotope Data folder:
Farad, Nixon, and Pyramid Lake 18O data were reported in:
Benson, L.V., 1994, Stable isotopes of oxygen and hydrogen in the Truckee River-Pyramid Lake surface-water system. 1. Data analysis and extraction of paleoclimatic information: Limnology and Oceanography, vol. 39, p. 344-355. https://digitalcommons.unl.edu/usgsstaffpub/1015
Spring chemistry around Pyramid Lake data were reported in:
Benson, L.V., 1994, Carbonate deposition, Pyramid Lake subbasin, Nevada: 1. Sequence of formation and elevational distribution of carbonate deposits (tufas): Palaeogeography, Palaeoclimatology, Palaeoecology, vol. 109, p. 55-87.
Benson, L.V., Kashgarian M., and Rubin, M., 1995, Carbonate deposition, …
2016 Nebraska Water Leaders Academy - Final Report, Mark E. Burbach, Connie Reimers-Hild
2016 Nebraska Water Leaders Academy - Final Report, Mark E. Burbach, Connie Reimers-Hild
Conservation and Survey Division: Faculty and Staff Publications
The effective management of Nebraska’s water resources is evermore challenged by variations in weather, climate, technology, socioeconomic policies, and regulation. Anthropogenic climate change, declining water tables and stream flows, increasing demands on freshwater, aging water infrastructure, fiscal constraints, and impacts on aquatic organisms are particularly imminent challenges in Nebraska and around the world (Pahl-Wostl et al., 2013; Pittock et al., 2008; USACE, 2010). Sustaining freshwater ecosystem services in the face of emerging environmental threats presents an immense societal dilemma worldwide (Pittock et al., 2013; Rockström et al., 2009, Millenium Ecosystem Assessment, 2005). The rapidly changing conditions of water resources in …
Owens Lake Core Data, Larry V. Benson
Owens Lake Core Data, Larry V. Benson
United States Geological Survey: Datasets
In the Owens Lake core data folder:
14C ages for cores OL84 and OL90 were reported in:
Benson, L.V., Burdett, J.W., Kashgarian, M., Lund, S.P., Phillips, F.M., and Rye, R.O., 1996, Climatic and hydrologic Oscillations in the Owens Lake basin and adjacent Sierra Nevada, California: Science, vol. 274, p. 746-749.
Benson, L.V., 1999, Records of millennial-scale climate change from the Great Basin of the Western United States: In Clark, P., Webb, R., Keigwin, L., eds., Mechanisms of Global Climate Change at Millennial Time Scales, American Geophysical Union Monograph 112, p. 203-225.
Benson, L., 2003, Western Lakes: Chapter 9 in …
Paleomagnetic Secular Variation (Psv) Ages Of Wilson Crk, Plc08-1, Bl04-4, Ol90-1 And 2, Larry V. Benson
Paleomagnetic Secular Variation (Psv) Ages Of Wilson Crk, Plc08-1, Bl04-4, Ol90-1 And 2, Larry V. Benson
United States Geological Survey: Datasets
In the paleomagnetic secular variation (PSV) ages folder:
The data for OL90-1 and 2 have not been published
The data for PLC08-1 are reported in:
Benson, L.V., Smoot, J.P., Lund, S.P., Mensing, S.A., Rye, R.O., 2013. Insights from a synthesis of old and new climate-proxy data from the western Lahontan Basin for the period 48 to 11.5 ka. Quaternary International310, 62-82.
Lund, S., Benson, L., Negrini, R., Liddicoat, J., Mensing, S., 2016. A full-vector paleomagnetic secular variation record (PSV) from Pyramid Lake (Nevada) from 47-17 ka: Evidence for the successive Mono Lake and Laschamp Excursions. Earth and Planetary Sciences …
Pyramid And Winnemucca Lake Basin Carbonate Data, Larry V. Benson
Pyramid And Winnemucca Lake Basin Carbonate Data, Larry V. Benson
United States Geological Survey: Datasets
In the Pyramid and Winnemucca lake basin carbonate data folder:
New unpublished and previously published 14C and calibrated ages for materials in the Winnemucca Caves are reported in the table and in the references listed below the table
14C and calibrated ages for Winnemucca Lake Basin carbonates are reported in:
Benson, L.V., Hattori, E.M., Southon, J., Aleck, B., 2013. Dating North America’s oldest petroglyphs, Winnemucca Lake subbasin, Nevada. Journal of Archaeological Science 40, 4466-4476.
Tufa 87Sr, 18O, and 13C data are reported in:
Benson, L.V., Smoot, J.P., Lund, S.P., Mensing, S.A., Rye, R.O., 2013. Insights …
Reconstructed Discharge For Truckee River, Larry V. Benson
Reconstructed Discharge For Truckee River, Larry V. Benson
United States Geological Survey: Datasets
Reconstructed Discharge for Truckee River
Name Date modified Time modified Size MB Extension
Reconstructed Discharge Truckee R\ Reconstructed Discharge for Truckee River.xlsx 11.11.2017 22:40:52 0.02 xlsx
Reconstructed discharge of the Truckee River was made considering losses to evaporation in all upstream reservoirs and corrected for diversion from the Derby Dam to the Newlands area. These data were never previously published.
General Comment: In most cases an age model based on 14C analyses is not included with the datasets although ones were created for the original publications. Given the general problems with 14C ages in the lakes of the …
Walker Lake Basin Data, Larry V. Benson, Steve P. Lund
Walker Lake Basin Data, Larry V. Benson, Steve P. Lund
United States Geological Survey: Datasets
Walker Lake Basin Data
Name Date modified Time modified Size MB Extension
Walker Lake Core 84-8 isotope and age data.xls 27.01.2018 15:25:52 0.03 xls
Walker Lake core WL002 PSV age and chemical data.xlsx 09.02.2018 20:04:50 0.03 xlsx
In the Walker Lake Basin folder:
Depth, 14C age (not corrected for reservoir effect), 18O, 13C data for core 84-8 are reported in:
Benson, L. V., 1988, Preliminary paleolimnologic data for the Walker Lake subbasin, California and Nevada: United States Geological Survey Water-Resources Investigations Report 87-4258, 50 p. Palaeogeography, Palaeoclimatology, Palaeoecology 240: 497-507.
Depth, PSV age, TIC , 18O, …
Pyramid Lake Core Data, Larry V. Benson
Pyramid Lake Core Data, Larry V. Benson
United States Geological Survey: Datasets
Pyramid Lake Core Data
14C and calibrated ages for core PLC08-1.xlsx 01.03.2014 19:45:30 0.01 xlsx
14C and calibrated ages for core PLC92B.xlsx 04.03.2014 16:41:30 0.01 xlsx
14C and calibrated ages for core PLC97-3.xlsx 01.03.2014 19:50:48 0.01 xlsx
CalKa Depth TOC TIC 18O 13C for PLC97-1.xlsx 09.11.2017 20:51:22 0.04 xlsx
Depth 14CAge Corrected 14C AGE CAL Age PLC98-4.xlsx 15.11.2017 18:26:12 0.01 xlsx
Depth 180 13C TOTC TOC TIC porosity CYBP Box Core PLB98-2.xlsx 01.03.2014 20:00:46 0.01 xlsx
Depth CalAge TIC TOTC TOC 13C 18O PLC98-4.xlsx 02.03.2014 00:32:20 0.05 xlsx
Depth Equivalent Depth in PLC08-1 PSV age 180 13C TIC TOC for …
Nebraska Statewide Groundwater-Level Monitoring Report 2016, Aaron R. Young, Mark E. Burbach, Leslie M. Howard, Michele M. Waszgis, R. Matthew Joeckel, Sue Olafsen Lackey
Nebraska Statewide Groundwater-Level Monitoring Report 2016, Aaron R. Young, Mark E. Burbach, Leslie M. Howard, Michele M. Waszgis, R. Matthew Joeckel, Sue Olafsen Lackey
Conservation and Survey Division: Faculty and Staff Publications
The term “groundwater” has come to be all but synonymous with Nebraska. Nearly three-quarters of the volume of the High Plains aquifer lies beneath the State, and groundwater maintains our streams, our ecosystems, our people, and our vitally important agricultural economy. Although Nebraska’s total groundwater resource is vast, it is also quite vulnerable to changes induced by natural processes and by humankind, necessitating a long-term commitment to wise management through informed decision making. Monitoring, studying, and reporting are the essential basis for such management and, ultimately, for meeting the myriad challenges presented by change.
The personnel of the Conservation and …
Fluvial-Lacustrine Processes Shaping The Landforms Of The Distal Paraguay Fluvial Megafan, Edward Limin Lo
Fluvial-Lacustrine Processes Shaping The Landforms Of The Distal Paraguay Fluvial Megafan, Edward Limin Lo
Theses and Dissertations--Earth and Environmental Sciences
Tropical wetlands such as the Pantanal help regulate global biogeochemical cycles, but climate change is modifying these environments. Controls on environmental changes can potentially be assessed from ancient, well-dated lacustrine sedimentary records. An integrated field and laboratory approach was undertaken to study the limnogeology of Lake Uberaba in the northern Pantanal, and test whether the lake has preserved a reliable record of environmental change in its strata. This study was designed to understand how the basin accumulates sediment and to assess its sensitivity to hydroclimatic variability. The data showed that modern Lake Uberaba is a highly dynamic, freshwater fluvial-lacustrine basin. …
Quantifying Ephemeral Gully Erosion With Photogrammetry Surveying, C. B. Weerasekara, A. Y. Shechukov
Quantifying Ephemeral Gully Erosion With Photogrammetry Surveying, C. B. Weerasekara, A. Y. Shechukov
Conservation and Survey Division: Faculty and Staff Publications
No abstract provided.
Cryogenic Viscous Liquids On Icy Moons, Danielle Neighbour
Cryogenic Viscous Liquids On Icy Moons, Danielle Neighbour
Civil Engineering Undergraduate Honors Theses
The study of cryogenically viscous liquids such as methane and ethane offers critical insight into the behavior of fluids on icy moons such as Saturn’s moon Titan. Shrouded by a hazy hydrocarbon shield, Titan’s significant nitrogen atmosphere of 1.5 bar, methane-driven hydrological cycle, and lakes and rivers are vaguely similar to our Earthly home. The European-created Huygens probe, carried by the Cassini spacecraft, arrived on Titan’s surface in January 2005 [1]. Upon landing, Huygens photographed its landing site, as seen in Figure 1. The photo depicts rock like objects, thought to be comprised of water ice sitting in a dry …
Characterization And Delineation Of Karst Geohazards Along Rm652 Using Electrical Resistivity Tomography, Culberson County, Texas, Adam F. Majzoub
Characterization And Delineation Of Karst Geohazards Along Rm652 Using Electrical Resistivity Tomography, Culberson County, Texas, Adam F. Majzoub
Electronic Theses and Dissertations
The Delaware Basin of West Texas and southeastern New Mexico is the major western subdivision of the Permian Basin and a northern extension of the Chihuahuan Desert. The major evaporite unit within the Delaware Basin is the Castile Formation, which consists of gypsum/anhydrite and is highly susceptible to dissolution and karsting. Manifestations of karst within the Castile outcrop are abundant and include sinkholes, subsidence features and caves, both epigene and hypogene in origin.
Land reconnaissance surveys conducted during the summer of 2015 documented abundant karst landforms in close proximity to a major thoroughfare, RM 652, in Culberson County, Texas. 2D …
Birth And Evolution Of The Rio Grande Fluvial System In The Last 8 Ma:Progressive Downward Integration And Interplay Between Tectonics, Volcanism, Climate, And River Evolution, Marisa N. Repasch
Earth and Planetary Sciences ETDs
The Rio Grande-Rio Chama (RG-RC) fluvial system has evolved dramatically over the last 8 Ma, undergoing channel migrations, drainage capture and integration events, volcanic damming, and carving and refilling of paleocanyons. Volcanism concurrent with the development of the river system provides a unique opportunity to apply multiple geochronometers to the study of its incision and drainage evolution. This paper reports 19 new 40Ar/39Ar basalt ages and 19 detrital mineral samples (zircon and sanidine) collected from RG-RC alluvium overlain by dated basalt flows in the context of a compilation of published 40Ar/39Ar basalt ages. The …