EAST MOJAVE STRAT COLUMN

2020-1-23 · dolomite overlain by red to orange-brown sandstone. Not a common unit in the east Mojave, perhaps removed by erosion. Chinle Formation - red shaly sandstone, red, brown and green shale with thin zones of chert and calcareous conglomerate. Aztec Sandstone - massively cross-bedded red sandstone. Forms very prominent ridges and outcrops; is the ...

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2007-8-8 · Ja Aztec Sandstone (Jurassic)—Prominently crossbedded quartz arenite that is typically red, yellow, or buff. Contains lenses of conglomerate in exposures at Old Dad Mountain, as well as interbeds of felsic volcanic rocks in several places. Also present at Cowhole Mountain and in Mescal Range

Geologic Map of the Devils Throat Quadrangle, Clark …

2013-6-27 · mostly from nearby or underlying Aztec Sandstone. Thickness about 0 to 5 m. Qgp Gypsiferous deposits (Pleistocene?) Includes exposures of white to gray, massive-bedded, sandy, calcareous gypsum near trace of the Lime Ridge fault in the east-central part of the quadrangle. The larger of the outcrops is south of Devils Throat.

Paleoenvironmental interpretations and systematics of ...

2018-5-28 · Sandstone deposition. Both the Windy Gully Sandstone and the New Mountain Sandstone are interpreted as the nearshore deposits of wide sandy tidal bays in which bioturbation by crustaceans was intense, while trough cross-bedded channel sands bear numerous trackways of large walking arth­ ropods. The intervening Terra Cotta Siltstone is

Eastern Mojave Geology

2021-8-14 · The Jurassic Aztec Sandstone is a massive to cross-bedded, buff colored orthoquartzite, that is commonly metamorphosed. The type locality is Aztec Tank, near the Contact Mine in the Goodsprings quadrangle of Nevada. The Aztec Sandstone is present in many ranges of the eastern Mojave including the Providence Mountains.

Anticrack inclusion model for compaction bands in sandstone

2005-11-5 · [30] Despite a long history of diagenesis and deformation, analysis of the Aztec Sandstone reveals a material arguably similar in terms of depositional structure and cementation to what it was during CB formation: a weakly cemented, cross-bedded, porous quartz sandstone. That autochthonous clay derived from the degradation of sparse feldspar ...

Red Rock Canyon National Conservation Area

Both offer good vantage points for photographs of crossed-bedded Aztec sandstone. For easy walking access to the sandstone, stop at the Sandstone Quarry parking lot. There you can see large blocks of stone and other historic evidence of the quarry activity as it occurred shortly after the turn of the century. Climbing A Sandstone Wall

Cross-bedding related anisotropy and its interplay with ...

2015-8-1 · Two joint systems are identified within the cross-bedded Aztec Sandstone, NV, USA. • Joints confined in cross-bed packages and through-going joint zones. • Confined joints in cross-bed packages occur parallel to dip direction of cross-beds. • P-wave anisotropy of Aztec Sandstone is measured 13% between parallel and bed-normal. •

"Angular K-feldspars in ancient sandstones" by John H ...

2018-7-27 · In our studies of ancient sandstones, many of which are purported in the conventional literature to be eolian deposits, we frequently encountered angular K-feldspar sand grains. In particular, we encountered them while studying the Coconino Sandstone of Arizona, but we have found them in many other ancient sandstones as well. To gain some insights on the petrology of ancient "eolian ...

Nugget-Navaho-Aztec sandstone: interaction of eolian sand ...

Westward into California, the sub-Aztec Sandstone contains volcanic pebbles. The upper part of the Aztec Sandstone contains a 1 to 2-m thick volcaniclastic siltstone. Farther west, the Aztec Sandstone is interbedded with volcanic flows, ash flows, and flow breccias. These rocks might easily be mistaken for red beds in well cores or cuttings.

GEOL261 homepage

2018-8-8 · The Jurassic Aztec Sandstone, an excellent example of a cross-bedded quartz arenite exposed in Red Rock Canyon National Conservation Area, Nevada. A cinder cone volcano in Lassen Volcanic National Park, California . A metamorphosed quartz pebble conglomerate in the Panamint Mountains in Death Valley National Park ...

Golden Gate Photo

2005-3-1 · Cross-Bedded Sandstone The large-scale cross bedding of the Aztec Sandstone is the tell-tale feature of petrified sand dunes from a Jurassic-age desert. Print No. A99-31-12. The Big Red Stripe This huge red band of the Aztec Sandstone is perhaps the most recognizable natural feature from an airline window on your approach to Las Vegas from the ...

Bed-parallel compaction bands in aeolian sandstone: Their ...

2009-12-20 · We collected field data on the occurrence and characteristics of compaction bands generally sub-parallel to bedding in the Jurassic Aztec Sandstone, exposed at the Valley of Fire State Park, about 60 km northeast of Las Vegas, Nevada, USA ().The 1400 m-thick, cross-bedded aeolian formation is primarily made up of fine-to-medium-grained, sub-arkosic sandstone with porosity values …

California Department of Conservation

2020-5-27 · Aztec sandstone—red, cross-bedded samdstone of geolian origin (probably Jurassic age). Reddish-brown dacite now breccias and flows of probable Upper Jurassic age. Chinle formation—red, brawn, and green nonmarine sandstone and shale; Moenkopi formation—thin-bedded …

Journal of Structural Geology

2019-8-31 · the Aztec Sandstone exposed in Valley of Fire State Park have me-dium to large-scale tabular-planar and wedge-planar cross strata truncated by widespread first-order and planar second-order bounding surfaces (Porter, 1987). The thickness of Aztec Sand-stone varies across the Valley of Fire State Park with a maximum of about 1400 m (Bohannon ...

PALAIOS, 2014, v. 29, 539-552 ^ ļ^^ļ^^ļļļj^ļ Research ...

The Navajo-Aztec wedge of predominantly cross-bedded eolian sandstone thickens westward, reaching a thickness of about 700 m in southern Nevada (Marzolf 1983; Porter 1987). These sandstones are mostly latest Early Jurassic (Toarcian) in age (Peterson and Pipiringos 1979; Marzolf 1993), although Marzolf and Anderson (2005) have

Tapeats Sandstone • Geology • Sedimentary

2009-5-23 · Tapeats Sandstone (averages 545 million years old) - This formation is made of cliff-derived medium- to coarse-grained sand and conglomerate that was deposited on an ancient shore (see 3a in figure 1). Ripple marks are common in the upper members of this dark brown thin-bedded layer.

California Department of Conservation

2020-5-27 · bedded eolian sandstone. Relatively small carbonate boulder- breccia lens near base of exposed section. Named by Hewett (1931, p.35). Consists mainly of massive inter beds Of limestone, dolomitic limestone and dolo- mite. Thin chert-bearing limestone zones near base and middle of section A few thin beds of shaly limestone.

TRACKWAYS OF A GREGARIOUS, DUNEFIELD-DWELLING, …

2014-12-1 · The Navajo-Aztec wedge of predominantly cross-bedded eolian sandstone thickens westward, reaching a thickness of about 700 m in southern Nevada (Marzolf 1983; Porter 1987). These sandstones are mostly latest Early Jurassic (Toarcian) in age ( Peterson and Pipiringos 1979 ; Marzolf 1993 ), although Marzolf and Anderson (2005) have suggested that ...

Mechanism of formation of wiggly compaction bands in ...

2015-11-17 · The Aztec Sandstone is a 1400 m thick, generally well-sorted, cross-bedded aeolian deposit that has been subjected to at least two significant deformation phases: (1) east-southeast directed shortening deformation during the Sevier orogeny in Late Mesozoic and (2) basin and range extension and strike-slip faulting beginning in mid-Miocene time ...

The paleoenvironmental significance of trace fossils in ...

2007-8-9 · of the Aztec Formation with a minimum thickness of 135m. The Aztec Siltstone comprises repetitions of coarse sandstones and finer siltstones/mudstones. Wide (up to 12m) shallow channels have lags rich in fish debris, and the very coarse, cross-bedded channel fill …

seismo rkeley

2009-2-25 · abundant Aztec Sandstone clasts; Qoaz: desert pavement contains few Aztec Sandstone clasts. Thickness ranges from 10 to 50 m. In the western portion Of quadrangle may occur as a thin veneer (1-2 m thick) over the older gravel deposits of the Blue Diamond and Red Rock fans (Qog3). Older gravel deposits of the Blue Diamond and

Climate, Water Table, and Sedimentary Controls on the ...

2018-7-12 · Jurassic Aztec Sandstone of eolian origin at Valley of Fire State Park, southern Nevada. At its maximum, the bed is 3.0 meters thick and is composed mostly of broken, folded, wavy, and flat laminae of mudstone, very fine-grained sandstone, and dolomitic limestone.

Changing Wind and Hydrologic Regimes During Deposition …

1983-1-1 · This chapter describes the changing wind and hydrologic regimes during deposition of the Navajo and Aztec sandstones. The Navajo and Aztec sandstones form a wedge of predominantly crossbedded sandstone that thickens westward from its zero edge in western Colorado and northeastern Arizona to over 650 m in exposures along the eastern edge of the foreland fold and thrust belt in …

Sedimentary – Geology Pics

Wind-deposited sandstone, Nevada. Wind-deposited Jurassic Aztec Sandstone with parting lineations, Valley of Fire State Park, Nevada. (171217-35) red, aeolian

aztec sandstone quarries

Aztec Sandstone: Usage of Geologic Unit Name: Aztec Sandstone* Aztec Quartzite* Aztec Sandstone outcrops in the Redstone area of Lake Mead National Recreation Area. Reply aztec for dove creek quarries. aztec sandstone quarries, From large primary jaws and gyratories to cones and VSIs for tertiary and quaternary finishing, Live Chat.

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

2005-11-7 · Sandstone (Bohannon, 1977, 1983). This eolian sandstone was deposited in a backarc setting (Marzolf, 1983, 1990) and is considered equivalent to the Navajo Sandstone of the Colorado Plateau and the Nugget Sandstone in the Wyoming thrust belt (Poole, 1964; Blakey, 1989). The Aztec Sandstone at Valley of

mountains | geologictimepics

We know it was that large because the Aztec Sandstone is the same rock as the Navajo Sandstone in Zion and Arches national parks. left: Limestone of the Cambrian Bonanza King Formation near Death Valley; right: Cross-bedded sandstone of the Jurassic Navajo Sandstone in Zion NP, Utah.

Paleo-fl uid fl ow and deformation in the Aztec Sandstone …

2004-9-2 · ticolored sandstone formations that range in hue from orange-red to purple, yellow, and white and that are part of the 1400-m-thick Upper Triassic and Jurassic Aztec Sandstone (Bohan-non, 1977, 1983), an eolian sediment deposited in a backarc setting (Marzolf, 1983, 1990). The Aztec Sandstone is part of a Mesozoic clastic

Deformation of Aztec Sandstone at Valley of Fire of Nevada ...

2020-8-7 · Pg. 9, 35, etc. Aztec sandstone. Massive ledge of reddish or buff sandstone, minutely cross-bedded. Is made up of many lenses, mostly 10 to 25 feet thick, each lens in turn made up of smaller laminae 0.5 to 2 inches thick.

Deformation of Aztec Sandstone at Valley of Fire of Nevada ...

 · The Valley of Fire State Park, 60 km NE of Las Vegas, is a beacon of knowledge for deformation of Aztec Sandstone, a cross-bedded quartz arenite deposited in the Aztec-Navajo-Nugget erg in early Jurassic. It displays great diversity of physical properties, different localization types and micromechanics. The two deformation episodes, the Sevier folding & thrusting and the Basin …

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