sandstone outcrops navajo

sandstone outcrops navajo

Navajo Sandstone - Zion National Park (U.S. National Park ...

2015-6-13 · 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 significantly, creating desert

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Navajo Sandstone - UtahGeology

2018-11-14 · The Navajo Sandstone is a geologic formation in the Glen Canyon Group that is spread across the U.S. states of southern Nevada, northern Arizona, northwestColorado, and Utah; as part of the Colorado Plateau province of the

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(PDF) Wind erosion of the wind‐deposited Navajo

Outcrops of Lower Jurassic Navajo Sandstone are especially intensely scoured by sand-laden, south- westerly winds. The products of this process range in scale from rhythmically spaced, millimetre-high escarpments on rock surfaces to scour pits in bedrock that reach tens of metres in depth and diameter. Fig.

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Wind erosion of the wind‐deposited Navajo Sandstone,

2009-3-10 · 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 walls when wind-swept grains strike the rock at a low angle.

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THE NAVAJO AQUIFER SYSTEM OF SOUTHWESTERN UTAH

2002-8-2 · Deposition of the Navajo Sandstone occurred under eolian conditions. It is a well sorted, fine-grained sandstone, with a total thickness between 2,000 and 2,400 feet in the central Virgin River basin area (figure 2). The Kayenta Formation consists of laminar beds of sandstone, siltstone, and silty mudstone, with a total

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Downslope coarsening in aeolian grainflows of the Navajo ...

2012-7-15 · Highlights We sampled individual grainflows in friable outcrops of the Navajo Sandstone. Samples were analyzed with a laser granulometer. Grainflows coarsen downslope, and are not inverse graded. Downslope coarsening sequesters coarse grains if dune deposits are truncated. At dune field's downwind margin, coarse grains must have had a local source.

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Wind erosion of the wind-deposited Navajo Sandstone,

2011-6-27 · abundance within grainflow-dominated outcrops of the Navajo Sandstone along portions of the East Kai-bab Monocline. The bands formed perpendicular to the direction of maximum compressive stress, and, within them, quartz grains are crushed and annealed. Wind erosion has removed the sandstone between the bands, leaving them in stark relief (Fig. 6).

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Wind Scour of Navajo Sandstone at the Wave (Central ...

2011-6-27 · Navajo Sandstone outcrops at and near the Wave, a photogenic landform astride the Utah–Arizona border. The small, steplike structures, in combi-nation with the general lack of aqueous erosional features in smooth Navajo Sandstone exposures, demonstrate that the Wave and several other nearby large-scale landforms were (and continue to

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Source of the Navajo Sand - Zion National Park (U.S ...

2015-6-13 · Cross-beds in the Navajo Sandstone at Zion indicate that the dominant wind pattern during the Early Jurassic was from the north-northwest. A close look at the sandstone reveals fine, well-sorted, and well-rounded sand grains –evidence of a very long journey for this massive pile of quartz sand.

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Solved The Navajo Sandstone makes major cliffs and |

The Navajo Sandstone makes major cliffs and other outcrops in Zion National Park and in Canyonlands National Park. It also shows up in Bryce Canyon National Park, although not much of it is seen there. But 100 or so miles south of those three parks, in the Grand Canyon region, the Navajo Sandstone is absent.

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Navajo Sandstone - Zion National Park (U.S.

2015-6-13 · 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 significantly, creating

Read More

Wind Scour of Navajo Sandstone at the Wave (Central ...

2011-6-27 · Navajo Sandstone outcrops at and near the Wave, a photogenic landform astride the Utah–Arizona border. The small, steplike structures, in combi-nation with the general lack of aqueous erosional features in smooth Navajo Sandstone exposures, demonstrate that the Wave and several other nearby large-scale landforms were (and continue to

Read More

Sheeting joints and polygonal patterns in the Navajo ...

2020-10-13 · Sheeting joints are ubiquitous in outcrops of the Navajo Sandstone on the west-central Colorado Plateau, USA. As in granitic terrains, these are open-ing-mode fractures and form parallel to land surfaces. In our study areas in south-central Utah, liquefaction during Jurassic seismic events destroyed

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Sheeting joints and polygonal patterns in the Navajo ...

Stratified Navajo Sandstone outcrops host large-scale planar sheeting joints, but such rocks rarely host smaller-scale, second-order sheeting joints. These smaller, strongly curved joints are, however, spectacularly developed in what we here refer to as structureless sandstone—isotropic rock in which primary (depositional) features have been ...

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Wind erosion of the wind‐deposited Navajo Sandstone,

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.

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An example of liquefaction-induced interdune

Extensive outcrops of Navajo Sandstone in the southwestern United States expose eolian dune deposits that are subdivided in a complex array of foresets and bounding surfaces.

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An example of liquefaction-induced interdune

Extensive outcrops of Navajo Sandstone in the southwestern United States expose eolian dune deposits that are subdivided in a complex array of foresets and bounding surfaces. In the Glen Canyon region, and other places, this architecture is frequently disrupted by large-scale, soft-sediment deformation features. These features have been attributed to episodic liquefaction

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Conjugate Riedel deformation band shear zones

2018-8-7 · map-scale Riedel shear zones in outcrops of Navajo Sandstone (Jurassic). These Riedel shear zones (Fig. 3) are marked by classic R-shears and R’-shears. Some of the best examples were found to occur in two areas as-sociated with Laramide Colorado Plateau uplifts: the Cottonwood area on the north end of the Kaibab

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EARTH SURFACE PROCESSES AND LANDFORMS Earth

2008-8-5 · inselberg pit, virtually all of the bedrock outcrops are Navajo, Page and Carmel formations, with Navajo Sandstone dominating (c. 75% of area). The bedrock units are gently folded, with dips typically 2–6°. A set of NE–SW orientated joints is clearly visible on Bureau of Land Management aerial images and Google Earth satellite images.

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Red rock and red planet diagenesis: Comparisons of

2005-7-14 · Jurassic Glen Canyon Group (including the Navajo Sandstone) outcrops primarily exposed along Laramide uplifts. Outcrop color patterns from Landsat 7 ETM+ (bands 7, 4, 2) satellite imagery. Green indicates vegetation. Stratigraphic section shows typical outcrop colors. Red rock and red planet diagenesis: Comparisons of Earth and Mars concretions

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(PDF) Wind erosion of the wind‐deposited Navajo

Outcrops of Lower Jurassic Navajo Sandstone are especially intensely scoured by sand-laden, south- westerly winds. The products of this process range in scale from rhythmically spaced, millimetre-high escarpments on rock surfaces to scour pits in bedrock that reach tens of metres in depth and diameter. Fig.

Read More

Wind erosion of the wind-deposited Navajo Sandstone,

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 walls when wind-swept grains strike the rock at a low angle. Photosynthetic, endolithic microbes directly underlie most

Read More

Solved The Navajo Sandstone makes major cliffs and |

The Navajo Sandstone makes major cliffs and other outcrops in Zion National Park and in Canyonlands National Park. It also shows up in Bryce Canyon National Park, although not much of it is seen there. But 100 or so miles south of those three parks, in the Grand Canyon region, the Navajo Sandstone is absent.

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Surficial fractures in the Navajo sandstone, south

2019-2-19 · The Early Jurassic Navajo-Nugget-Aztec Sandstone (hereafter re-ferred to as the Navajo sandstone) was deposited near the western margin of the supercontinent Pangea by desert dunes; its outcrops stretch from central Wyoming to southern Nevada and are particu-larly prominent across the Colorado Plateau. This well-sorted, homo -

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An example of liquefaction-induced interdune

Extensive outcrops of Navajo Sandstone in the southwestern United States expose eolian dune deposits that are subdivided in a complex array of foresets and bounding surfaces. In the Glen Canyon region, and other places, this architecture is frequently disrupted by large-scale, soft-sediment deformation features. These features have been attributed to episodic liquefaction

Read More

Chapter Series: Rough Rock - Navajo Times

2014-2-6 · Rough Rock at a Glance. Name: A direct translation of the Navajo Tsé Ch'izhi, referring to the sandstone outcrops throughout the chapter. Population: 947 at the 2010 Census. Land area: 53,000 ...

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Paleohydrologic controls on soft-sediment deformation in ...

However, various paleohydrological indicators from Navajo Sandstone outcrops point toward a broader range of water table configurations during the deformation history of that eolianite. Some outcrops reveal extensive deformation complexes that do not appear to have extended to the contemporary depositional surface.

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Annual monsoon rains recorded by Jurassic dunes | Nature

2001-7-5 · Here we analyse slump masses in the annual depositional cycles within these deposits, which have been described for some outcrops of the Navajo Sandstone 8. Twenty-four slumps, which were ...

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Red rock and red planet diagenesis: Comparisons of

2005-7-14 · Jurassic Glen Canyon Group (including the Navajo Sandstone) outcrops primarily exposed along Laramide uplifts. Outcrop color patterns from Landsat 7 ETM+ (bands 7, 4, 2) satellite imagery. Green indicates vegetation. Stratigraphic section shows typical outcrop colors. Red rock and red planet diagenesis: Comparisons of Earth and Mars concretions

Read More

Conjugate Riedel deformation band shear zones

2018-8-7 · map-scale Riedel shear zones in outcrops of Navajo Sandstone (Jurassic). These Riedel shear zones (Fig. 3) are marked by classic R-shears and R’-shears. Some of the best examples were found to occur in two areas as-sociated with Laramide Colorado Plateau uplifts: the Cottonwood area on the north end of the Kaibab

Read More