aztec sandstone brittle

Comminution characteristics of quartz in natural and ...

We studied a number of faults in weakly cemented Aztec sandstone (92.6% quartz, 6.1% clay, 1.2% K-feldspar; well/sub-rounded grains; mean grain size 330μ m; porosity 17-24%) from Valley of Fire (VOF) State Park in Nevada, USA, with true displacements 1.5 to150 cm. The deformation is typically asymmetric core/damage zone type microstructure with fault core thickness varying between the …

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joints

2019-1-8 · Review paper: Fossen et. al., 2007, Deformation bands in sandstone: a review; Journal of Geological Society, London; 164, 1-15. This is a close up view the Jurassic Aztec sandstone in Valley of Fire State Park in Nevada. Three planar discontinuities can be seen in the sandstone…

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Structural Diagenesis Field Symposium | Structural ...

2021-6-16 · Alteration fronts in Aztec Sandstone at Valley of Fire, reflecting paleo-fluid flow associated with Sevier thrusting. The field team included Peter Eichhubl (instructor and leader), Jon Major (co-leader), Sara Elliott (co-leader), Andras Fall, Chris Landry, Zhiqiang Fan, and students Nike Tokan-Laval, Casey O''Brien, Erick Wright, Mint Doungkaew, and Peter Laciano.

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Brittle deformation, fl uid fl ow, and diagenesis in ...

2005-11-7 · A reconstruction of paleofl uid fl ow in the Aztec Sandstone is based on detailed mapping of multicolored alteration patterns and their cross-cutting relations with brittle structures. These patterns resulted from syndepositional reddening of the eolian sandstone and repeated episodes of dissolution, mobilization, and reprecipita-

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Faults: structural geology

2019-1-23 · Faults: structural geology. In structurally simple fields, the main control on production behavior is the distribution of lithofacies. In structurally complex fields, faults and fractures provide major elements influencing production performance. This article discusses the data used to establish the presence of faults and how faults are mapped ...

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12.113 2: Brittle deformation and faulting

2020-12-30 · Brittle material behaviour 1.1 Reading assignment Twiss and Moore''s chapter nine is essential reading for this stuff, and parts of chapter ... Red rocks are the Jurassic Aztec sandstone. Dark grey rocks are the Cambrian Bonanza King dolostone. What is the nature of the contact? What is the direction of transport? 18. Created Date:

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Brittle deformation, fluid flow, and diagenesis in ...

2005-1-1 · Brittle deformation, fluid flow, and diagenesis in sandstone at Valley of Fire State Park, Nevada

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(PDF) Characterization of strike-slip fault–splay ...

The Aztec Sandstone is divided into three sub-units based on rock color and related diagenetic history: the lower (red) unit, the middle (buff) unit and the upper (orange) unit (Carpenter and Carpenter, 1994;Eichhulb et al., 2004). The total thickness of the Aztec Sandstone in …

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Effect of grain size distribution on the development of ...

formation, (b) Boise sandstone that failed by distributed cataclastic flow (Note the different scale), and (c) Navajo sandstone from Buckskin Gulch and Aztec sandstone from Valley of Fire. Navajo sandstone data are based on Figure S1 of Schultz et al. [2010]. We only …

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Multiscale modeling and analysis of compaction …

2017-5-24 · Eichhubl P, Taylor WL, Pollard DD, Aydin A (2004) Paleo-fluid flow and deformation in the Aztec Sandstone at the Valley of Fire, Nevada—evidence for the coupling of hydrogeologic, diagenetic, and tectonic processes. Geol Soc Am Bull …

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Geology – johnmclarty

Geology Aztec Sandstone, Ichnofossils, Navajo Sandstone, Valley of Fire Basin and Range, Great Waves of Stone ... Mysterious forces beneath the pancake layers of mud and sand turned into brittle rock–shale, limestone, and sandstone–fractured the pancake into pieces like massive ice flows, icebergs of rock on a magma sea. The bergs tilted ...

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Jurassic earthquake sequence recorded by multiple ...

2013-12-4 · The Navajo Sandstone (Utah, western United States) accumulated in a giant sand desert near the convergent plate boundary along Pangaea''s western margin. Numerous studies of the Na-vajo and correlative Aztec Sandstones have at-tributed dramatic, large-scale deformation of cross-strata to liquefaction and fl uidization of

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Pure and shear-enhanced compaction bands in Aztec …

2010-12-1 · Stage I shear-enhanced compaction bands are the most ubiquitous brittle structures in the upper Aztec Sandstone. They are planar to curviplanar, and can be traced over 10–50 m along strike (Fig. 2a). Bands are up to 5 cm thick, and composed of up to 10–20 single strands.

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The Stanford Rock Fracture Project Collection in ...

The brittle-ductile transition is a depth interval in the earth''s crust where the constitutive behavior of rock undergoes significant changes. ... We find that waterflood is an effective approach to recover oil when various structures are present together in the Aztec Sandstone, but the relative orientations and locations of these structures ...

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Crossing the Cordillera: From the Colorado Plateau to the ...

2018-2-14 · northwest end of the black hill to the Aztec Sandstone outcrop on the northeast side, to Site 3. Allow 15-20 minutes for the walk, 1.5 hours from the time you leave the parking area until you return. Driving to the parking spot from Stop 2 should take ~10 minutes (~1.7 mi).

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Simulating brittle fault growth from linkage of ...

Jurassic Aztec sandstone, Nevada, USA. Their model pro-poses that the faults develop by formation of deformation bandsandsplayfracturesthatpropagatefromthepreexisting joints, in addition to zones of dilational fragmentation between pairs of joints. Two distinct geometries of splay fractures are proposed based on the orientation of the

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Publications | Bureau of Economic Geology

2021-7-15 · Milliken, K.L., and Laubach, S.E., 2000, Brittle deformation in sandstone diagenesis as revealed by scanned cathodoluminescence imaging with application to characterization of fractured reservoirs: Chapter 9, Cathodoluminescence in Geosciences, New York, Springer Verlag, 225-243.

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Simulating brittle fault growth from linkage of ...

Simulating brittle fault growth from linkage of preexisting structures Rebecca J. Lunn,1 Jonathan P. Willson,2 Zoe K. Shipton,3 and Heather Moir1 ... Jurassic Aztec sandstone, Nevada, USA. Their model pro-poses that the faults develop by formation of deformation

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Untitled Document [marlimillerphoto ]

2009-8-12 · Cambrian Bonanza King Limestone (gray) over the Jurassic Aztec Sandstone (tan). The Aztec Sandstone is equivalent to the Navajo Sandstone, which is exposed so beautifully in Zion National Park. Return to Brittle Structures Return to Structural Geology Return to Images Return to Home Page

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Soft-sediment Deformation and Dune Collapse in the …

2020-10-13 · The Navajo Sandstone is a Formation of the Glenn Canyon Group, and represents an eolian dune system comparable in extent to the modern Sahara Desert. The Navajo Sandstone records deposition from the beginning of the Pliensbachian through the mid-Toarchian ages of the lower Jurassic. The Aztec Sandstone and Nugget Sandstone are

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(PDF) The evolution of the damage zone with fault …

The Aztec maximum damage zone thickness should be found in the Sandstone is a fine- to medium-grained quartz arenite, with middle part of the faults. In apparent contradiction, frequent dune boundaries and large-scale tabular planar and however, other studies have proposed that the distribution wedge planar cross strata [Marzolf, 1983, 1990].

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Publications | Structural Geology

2018-6-10 · Paleo-fluid flow and deformation in the Aztec Sandstone at the Valley of Fire, Nevada - Evidence for the coupling of hydrogeologic, diagenetic, and tectonic processes GEOLOGICAL SOCIETY OF AMERICA BULLETIN Eichhubl, P., Taylor, W. L., Pollard, D. …

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Structural Heterogeneities and Paleo-Fluid Flow in an ...

2006-6-12 · Structural Heterogeneities and Paleo-Fluid Flow in an Analogue Sandstone Reservoir Investigators: D. D ... be modeled as brittle "anti-cracks". ... Pollard, D. D., and Aydin, A., 2004, Paleo-fluid flow and deformation in the Aztec Sandstone at the Valley Of Fire Nevada-Evidence for the coupling of hydrogeological, diagenetic, and tectonic ...

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12.113 2: Brittle deformation and faulting

2020-12-30 · Brittle material behaviour 1.1 Reading assignment Twiss and Moore''s chapter nine is essential reading for this stuff, and parts of chapter ten are definitely relevant. 1.2 Failure criteria 1.2.1 Tensile stress σ1 = σ2 >> σ3 And σ3 is negative. Open tension fractures containing σ1 and σ2 and perpendic­ ular to σ3. Draw a Mohr circle for this situation:

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Structural and petrophysical effects of overthrusting …

Abstract Little is known about the effect of thrusting on lithological and petrophysical properties of reservoir sandstone. Here we use field observations, probe permeability measurements and thin-section analysis along ten transects from the Muddy Mountain thrust contact downwards into the underlying Jurassic Aztec Sandstone to evaluate the nature and extent of petrophysical and ...

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Index [assets.cambridge ]

2009-4-20 · Aztec Sandstone, USA 64, 145, 150, 267 banding on outcrops 12 barerocksurfaces seealso slickrockslopes 181–182 basal sapping 28, 30, 81, 84 basalt dating 208, 227, 228 ... brittle 62–65 by block sliding 68–72 false anticline see also valley bulging 57 false meanders (faux me´andres) 192

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Colorful Geology at Valley of Fire State Park | Zach ...

2017-4-10 · Colorful Geology at Valley of Fire State Park. Compaction bands in multi-colored Aztec Sandstone, just one of many geologic wonders in Valley of Fire State Park, Nevada. One of the great things about living in Southern Utah is the abundance of different climates within a small geographic area. When temperatures rise into the 90s and 100s in the ...

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Multiscale modeling and analysis of compaction bands in ...

2020-5-23 · [25, 49, 62], and the Jurassic Aztec Sandstone in Nevada, USA [4, 21, 33, 63]. The presence of compaction band has been found to cause a dramatic reduction in both porosity and permeability within compaction bands as compared to the host rock [25] and hence can significantly alter the flow in rocks, leading to great challenges for practical ...

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Haakon Fossen | Universitetet i Bergen

2021-7-26 · Haakon Fossen. Professor. Institutt for geovitenskap Avdeling for naturhistorie Universitetsmuseet i Bergen. Hjemmeside. Vis CV. E-post [email protected] Telefon +47 55 58 34 95. Besøksadresse. Realfagbygget.

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10.1016/j.jsg.2015.02.014 | 10.1016/j.jsg.2015 ...

2020-6-11 · In this work we explore the highly porous Aztec Sandstone in the Received in revised form footwall to the Muddy Mountain thrust in SE Nevada, which contains several types of deformation bands 19 February 2015 in the Buffington tectonic window: 1) Distributed centimeter-thick shear-enhanced compaction bands Accepted 26 February 2015 (SECBs) and ...

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Eshelby''s solution for ellipsoidal inhomogeneous ...

2015-7-8 · spaced up to several meters apart. The Aztec Sandstone has a porosity of about 25% outside bands and about 10% inside bands. The bands have lower permeability than the surrounding matrix (Taylor and Pollard (2000) and Main et al. (2001)), and as a result, compaction bands can signif-icantly affect the performance of sandstone reservoirs and

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FIRST REPORT OF DINOSAUR, SYNAPSID, AND …

2018-8-23 · The Aztec Sandstone is a Lower-Middle Jurassic eolian sandstone exposed in southern Nevada and southeastern California. It is correlative with–and lithologically very simi-lar to–the Navajo Sandstone of southern Utah and northern Arizona (Marzolf and Anderson, 2005). Prior to Miocene extension, these two sandstone units were contiguous bodies

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