· In most of the Navajo Sandstone deposits in the Moab area, there is evidence that surface water existed as carbonate lakes and springs (Parrish et al. , 2019b. In areas in between the study area
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· Follow the water: Connecting a CO2 reservoir and bleached sandstone to iron-rich concretions in the Navajo Sandstone of south-central Utah, USA: REPLY November 2010 Geology 999-1002:999-1002
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· Abstract. The geologic profile of the western United States lends itself to naturally elevated levels of arsenic and uranium in the groundwater and can be aggravated by mining. The Navajo Nation, located in the American Southwest, is the largest contiguous Native American Nation and has over a 100-year legacy of hard rock mining.
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:David B. Loope, Richard M. Kettler, Karrie A. WeberPublish Year:2010 · During our decade of Navajo Sandstone studies, we examined over 200 concretions by petrography, X-ray diffraction, whole rock analysis, Mössbauer
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· In general, dissolution of CH 4 in liquid water will decrease the density of the solution whereas dissolution of CO 2 causes solution density to increase (Neufeld et al., 2010). The tendency of aqueous solutions to become more dense upon dissolution of CO 2 allowed it (and CH 4 ) to accumulate in the bottom waters of Lake Nyos, eventually
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View PDF. FEATURE Feature Wind erosion of the wind-deposited Navajo Sandstone, USA Outcrops of the Early Jurassic Navajo Sandstone in southern Utah and northern Arizona, south-western USA are being actively eroded by sand-laden, south-westerly winds. Small-scale stepped topography with risers facing into the wind develops even on steep canyon
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· The Navajo name for Upper Antelope Canyon is "Tsé bighánílíní," which means "the place where water runs through rocks." Upper Antelope Canyon is only about 100 yards (91 m) in length. It is
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· The Navajo Sandstone in the Spencer Flat area of Grand Staircase Escalante National Monument exhibits a variety of iron oxide/oxyhydroxide concretion geometries that preserve a record of water/rock interactions and iron mass transfer processes throughout 1
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· Navajo Sandstone is the youngest, dominant rock layer in Canyonlands. This layer forms buttes along the scenic drive in the Island in the Sky District, as well as the cliff walls of upper Horseshoe Canyon
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· The range of colors of the Navajo Sandstone –red, brown, pink, salmon, gold, and even white—results from varying amounts and forms of iron oxide within the rock, and in the case of the white
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· In 1975, the body of evidence for the influence of water on the Navajo Sandstone, led to the high profile and controversial re-interpretation of the Navajo as a marginal marine sand wave deposit by Freeman and Visher (Freeman and Visher, 1975, Folk, 1977, ).
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· On the Navajo Nation, a life without water. Thousands of Navajos have no clean running water at home, a crisis magnified by drought and government neglect. This is how families cope. by Richard Tsong-Taatarii November 29, 2023. This project was made possible with a grant from the Pulitzer Center for Crisis Reporting.
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The injection of CO2 into deep saline aquifers is being considered as an option for greenhouse gas mitigation. However, the response of an aquifer to the injected CO2 is largely unknown. Experiments involving the reaction of Navajo Sandstone with acidic brine were conducted at 200°C and 25 or 30 MPa to evaluate the extent of fluid–rock
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These carbonates were age dated using the radiometric method of uranium-lead (U-Pb), providing ages of 200.5 ± 1.5 million years (Ma) and 195.0 ± 7.7 Ma. These age dates show that in eastern
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The Navajo aquifer system, defined as the combination of the water-bearing parts of the Navajo Sandstone and the Kayenta Formation, provides the majority of municipal water to southwestern Utah. Rapid population growth in this warm and arid region is putting
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· The injection of CO2 into deep saline aquifers is being considered as an option for greenhouse gas mitigation. However, the response of an aquifer to the injected CO2 is largely unknown. Experiments involving the reaction of Navajo Sandstone with acidic brine were conducted at 200°C and 25 or 30 MPa to evaluate the extent of
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· Previous studies have placed the jarosite- and alunite-bearing caprock at Mollies Nipple in the Navajo Sandstone, but the presence of water-lain deposits, volcanic ash, volcanic clasts, and
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But not all Navajo Sandstone is red; some Navajo Sandstone is white. While still buried, water containing reducing agents such as weak acids or possibly hydrocarbons (petroleum) traveled slowly through parts of the permeable sandstone, bleaching the red rock by dissolving the iron into the water.
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· That the Navajo Sandstone was a subtropical desert is widely accepted (e.g., McKee 1979;Marzolf 1983;Parrish 1993). The desert environment does not, however, preclude processes that involve water
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· Abstract and Figures. The Navajo Sandstone of the American Southwest was deposited at approximately 190 Ma in a giant, subtropical dune field near the western margin of Pangea. From this unit, we
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:David B. Loope, Richard M. Kettler, Karrie A. WeberPublish Year:2010Concretions with thick, iron oxide–cemented rinds and lightly cemented, iron-poor sandstone cores are abundant within the Navajo Sandstone near the southeast flank of
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:Publish Year:2020Published:2020/05 · The Navajo Sandstone is known for its beautiful red and tan crossbedded sandstones that grace many of the national parks and monuments in the southwest USA.
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The Jurassic Navajo Sandstone of southeastern Utah is a rich archive of a desert complex with an active groundwater system, influenced by climate changes and recharge from the Uncompahgre Uplift of the Ancestral Rocky Mountains. This eastern erg margin was dominated by dune deposits of large (>10 m thick) and small (m-scale) crossbedded
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Wind erosion of the wind-deposited Navajo Sandstone, USA. David B. Loope1& Joseph A. Mason2. 1Department of Geosciences, University of Nebraska, Lincoln, NE 68588-0340, USA [email protected]. 2Department of Geography, University of Wisconsin, Madison, WI 53706, USA. Outcrops of the Early Jurassic Navajo Sandstone in southern Utah and
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· The Navajo Sandstone consists of thick layers of cross-bedded sandstone formed by windblown sand dunes in a vast ancient desert. In the early Jurassic, the climate of the Colorado Plateau dried
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Zion National Park exposes some of the largest and clearest cross-bedded patterns among Earth’s immense and extensive sandstone layers. In the past, continuous flow piled sand dunes on top of one
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· Dissolving CO 2 in the water lowers the pH, so that no minerals precipitate, and the Navajo Sandstone contains only small amounts of mineral that may consume the H +. The reaction of the acidic water produced by dissolving CO 2 with K-feldspar and minor clays and calcite in the sandstone throughout 500 yr consumes little H + and produces
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:Sandstone in UtahNational Parks of The United States · Chan et al. (2005) hypothesized that rinded concretions in the Navajo Sandstone are de novo mixing products of oxidized and reduced fluids. Dana (1896)
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Identifying the source of sedimentary rocks is important for reconstructing ancient landscapes. The thick Navajo sandstone, pictured here in Zion National Park, is one of the largest wind-deposited formations in the
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colors of the Navajo SandstoneDesert DinosaursSource of the Navajo SandSand Dunes to SandstoneRock LayersMapsConsulta
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