3 edition of Structural evolution of a Grand Canyon breccia pipe found in the catalog.
Structural evolution of a Grand Canyon breccia pipe
|Statement||by Earl R. Verbeek, Marilyn A. Grout, and Bradley S. Van Gosen ; prepared in cooperation with the Hualapai Indian Tribe.|
|Series||Open-file report -- 88-6., U.S. Geological Survey open-file report -- 88-6.|
|Contributions||Grout, Marilyn A., Van Gosen, B. S. 1960-, Hualapai Indian Reservation (Ariz.), Geological Survey (U.S.)|
|The Physical Object|
Stratigraphy and structural geology are two fields in which Earth scientists try to interpret the stories told by rocks. Stratigraphers compare vertical sequences of rock layers from different areas to piece together the geologic history of a region. The facies architecture of the Mt. Leyshon breccia complex is reinterpreted as a subvolcanic intrusive breccia and igneous complex. The main pipe breccia defines the margins of the complex, which also contains a number of smaller breccia pipes and dykes, associated with porphyritic intrusives. The grossly rhombohedral shaped main pipe breccia has antler-like geometries with inter-fingering Cited by: 2.
At present, the Shinumo Formation crops out in a km-long, quasi-linear array of seven exposure areas, with each area km long, as measured parallel to the array, mostly on the north side of. Shareable Link. Use the link below to share a full-text version of this article with your friends and colleagues. Learn more.
The Orphan Lode: A case history of a uranium mine in a breccia pipe, Grand Canyon, Arizona. Geological Society of America, Abstracts with Programs, 18(5) >Mon. 8: The production history and geology of the Hacks, Ridenour, Riverview and Chapel breccia pipes, northwestern Arizona. Fault breccia (/ ˈ b r ɛ tʃ i ə / or / ˈ b r ɛ ʃ i ə /; Italian for "breach"), or tectonic breccia, is a breccia (a rock type consisting of angular clasts) that was formed by tectonic forces.. Fault breccia is a tectonite formed by localized zone of brittle deformation (a fault zone) in a rock.
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Get this from a library. Structural evolution of a Grand Canyon breccia pipe: the Ridenour copper-vanadium-uranium mine, Hualapai Indian Reservation, Coconino County, Arizona. [Earl R Verbeek; Marilyn A Grout; B S Van Gosen; Hualapai Indian Structural evolution of a Grand Canyon breccia pipe book (Ariz.); Geological Survey (U.S.)].
Get this from a library. Structural evolution of a Grand Canyon breccia pipe: the Ridenour copper-vanadium-uranium mine, Hualapai Indian reservation, Coconino County, Arizona. [Earl R Verbeek; Marilyn A Grout; B S Van Gosen; Geological Survey (U.S.),; Hualapai Indian Tribe of the Hualapai Indian Reservation, Arizona.].
A Research Project was conducted through the National Park Service to study the structural geology and hydrogeology of the Grandview Breccia Pipe located within the Grand Canyon north of Grandview Point. The pipe is located on Horseshoe Mesa and can only be reached via the steep Grandview Trail, a distance of 4 miles.
Breccia pipe cutting Eday Sandstone, Ophir Bay, Orkney A breccia pipe, also referred to as a chimney, is a mass of breccia (rock composed of broken fragments of minerals or rock cemented together by a fine-grained matrix), often in an irregular and cylindrical shape.
A breccia pipe is a vertical, pipe-like mass of broken rock (breccia), typically a few tens of meters across and hundreds of meters in vertical extent. Breccia pipes formed within Paleozoic and Triassic strata over a broad area around the Grand Canyon, and some contain high.
While the structural depression over a beccia pipe may range in diameter up to mi. or more, the breccia pipe diameters range up to about ft.; the normal range being to ft.
Breccia Rock The CSMAT 3D graphic of the newly imaged Makapuu Breccia Pipe can be seen above and here. The earliest breccia pipe mined for uranium was the Orphan, a mineralized pipe exposed on the southern wall of the Grand Canyon within the Grand Canyon National Park.
During the late 70s, Energy Fuels Nuclear, Inc. (founder Bob Adams and successor Oren Benton) began a concerted effort to locate and then mine further examples of this previously. ore in the United States occurs in breccia pipes scattered across the Grand Canyon region (fig.1).
These breccia pipes, named for their vertical, pipe-like shape and the broken rock, or breccia, that fills them, range from to ft in diameter at depth.
They were formed millions of years ago when groundwater dissolved carbon. Structural Geology 3 Breccia Pipes 4 Introduction 4 Large Collapse Features 5 Cambrian and Devonian Collapse Features 5 Mineralized Breccia Pipes 6 Structural Control of Breccia Pipes 7 Surprise Canyon Formation Association with Breccia Pipes 8 Model For Breccia-pipe Formation and Mineralization 8 Acknowledgments 12Cited by: Uranium Deposits in Collapse Breccia Pipes in the Grand Canyon Region, Colorado Plateau, USA By Franz J.
DAHLKAMP With 4 figures and 1 table in text ReceivedNovember 10th Introduction The uranium district is located in the Arizona Strip area, to the north and south of the Grand Canyon, northwestern Size: 2MB.
The breccia pipes exist because of the nature of the Redwall Limestone, a million-year old formation that forms high red cliffs near the bottom of the Grand Canyon. The limestone is actually grey, but has been stained by iron and manganese oxides derived from overlying formations.
The Grand Canyon Redwall limestone forms a major mineral district, its breccia pipes being host to rich uranium and base metal deposits. Yet karst processes as a mechanism for preparing host rocks. Breccia pipes are vertical collapse structures, typically a few tens to hundreds of feet across and hundreds to thousands of feet in vertical extent.
The pipes formed more than million years ago within Paleozoic and Triassic rocks over a broad area of the Colorado Plateau around the Grand Canyon. The pipes formed as groundwater. HYDROTHERMAL BRECCIA PIPE STRUCTURES – GENERAL FEATURES AND GENETIC CRITERIA – 59 Matrix The rock fragments are also accompanied by matrix and/or hydrothermal cement.
The rock-flour type matrix has a variable participation, but it has obviously a minor participation (less than 50%, Sillitoe, ) as compared to the clasts. • A-1 blind breccia pipe discovered on first VTEM anomaly drilled (First new mineralized breccia pipe identified in 18 yrs) A-1 Mineralized pipe discovered at A second VTEM anomaly drilled A ft @ % incl.
ft @ % U 3O 8 A A A • Drilling at A and A defined probable pipe structures with up to 40 ft. Structural evolution of a Grand Canyon breccia pipe [microform]: the Ridenour copper-vanadium-uranium m Structural analysis of a mechanized LHD trench undercut caving system [microform] / by C.V. Jude; Mineral resource potential and related studies of the Papago Indian reservation, southern Arizona [micro Where do the salts go.
BEST MANAGEMENT PRACTICES AND COMPLIANCE MEASURES FOR BRECCIA PIPE URANIUM MINING ACTIVITIES IN NORTHERN ARIZONA Following is a list of best management practices (BMPs) and compliance measures that could be applied to individual uranium mining operations on both Bureau of Land Management (BLM) and National Forest System Lands in Northern Arizona.
breccia pipe is called maar, while its underground segment (the breccia pipe body) is known as the diatreme (Lorenz,Baker et al., ). Phreatomagmatic diatremes are characterised by their regular morphology with an inverted cone shaped - like profile.
In the upper levels, towards the surface. Mineralized breccia pipes are roughly cylindrical, near vertical structures ranging in diameter from 50 to ft. A composite pile is composed of a central core of heterogeneous, rotated, angular to rounded rock fragments surrounded by a zone of nonrotated crackle by: 9.
The region near the mouth of western Grand Canyon, where the Colorado River exits from the Hualapai Plateau into the Grand Wash Trough, contains the key geologic relationships that have shaped many geologists' perceptions of the origin of the Colorado River as a through flowing drainage system since the work of Longwell ().The interior basin Muddy Creek Formation and its correlatives in.
Breccia Pipe SW NE Coconino Ss Uranium Mineralization Breccia Pipe Density – Northern Arizona Strip District The USGS Open File Report (OFR) shows the mapped locations of 1, pipes in the Grand Canyon region (1).
(1) H.B. Sutphin and K.J. Wenrich, Map of Locations of Breccia Pipes in the Grand Canyon Regions.Breccia pipe formation is related to evolution of an underlying magma chamber. In a favored model, magmatic fluids exsolve from the magma and rise and collect as one or more large bubbles at the roof of the chamber.
As more fluid accumulates and the fluid bubble increases in size, the roof of the chamber eventually can no longer support the.The data consists of a summary of amphibian acoustic recordings at Canyon, Arizona 1, and Pinenut mines near the Grand Canyon.
USGS is currently conducting biological surveys associated with uranium mines on federal lands in Arizona. These surveys include determining the composition of the local amphibian community. Original raw acoustic recordings used to create this summary data table are.