1 edition of Slope stability and denudational processes: central Appalachians found in the catalog.
Slope stability and denudational processes: central Appalachians
Guidebook prepared for field trip 10 of the Geological Society of America, Washington meeting, October 1971
|Statement||[by] Edward J. Ciolkosz [and others]|
|Contributions||Ciolkosz, E. J, Geological Society of Washington, Geological Society of America|
|The Physical Object|
|Number of Pages||37|
The objectives of this study were (1) to apply and evaluate a simplified slope-stability model to an area in Central Honduras that was severely affected by Hurricane Mitch, and (2) to develop landslide-susceptibility maps categorized according to local slope gradient ([alpha]) and relative wetness (W), the variables that most influence slope. Description: Maps showing relative slope stability and relative erodibility, central Santa Cruz River Valley Tucson area, Arizona Survey Date: Print Date:
EPS-block geofoam slope systems may also incorporate a pavement sys- tem, so to design against failure, the overall design process includes the evaluation of these three failure modes and must include the following design con- siderations: â ¢â ¢ Design for external stability of the overall EPS- block geofoam slope system configuration; â. 2. Entry stability analysis with the strength reduction method (SRM) The strength reduction modeling technique has a long history in numerical model analysis in rock slope stability engineering .This modeling technique was adapted to underground coal mine entry analyses by Esterhuizen  to address the need for a method to compare the effectiveness of different support systems when designing.
Morphologically, the structural-denudational slopes tend to be straight or slightly convex and their slope does not exceed 20[degrees], averaging 10[degrees][degrees] (Fig. 25c). These slopes are typical source areas of the streams: due to favourable structural conditions, even though structural-denudational slopes represent only 10% of the. The Puerto Rico trench exhibits great water depth, extremely low gravity anomaly, and a tilted carbonate platform between (reconstructed) elevations of + m and m. we suggest that these features are manifestations of large vertical movements of a segment of the Puerto Rico Trench, its forearc, and the island of Puerto Rico that took place m.y. ago over a time period as short as
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Get this from a library. Slope stability and denudational processes: central Appalachians. [E J Ciolkosz; Geological Society of Washington.; Geological Society of America.;]. Slope Stability in the Appalachian Plateau, Pennsylvania and West Virginia, U.S.A. Chapter (PDF Available) in Developments in Geotechnical Engineering December with 64 Reads.
Most of the information that follows on physiography, geology, slope formation, landsliding and geotechnical data has been derived from “Slope Stability in the Appalachian Plateau, Pennsylvania and West Virginia” by Gray et al.
Most of this information is. •Part II. Process and Form 3. Climate and Denudational Processes 4. Weathering 5. The Drainage Basin as a Geomorphic Unit 6.
Water and Sediment in Channels 7. Channel Form and Process 8. Hillslope Characteristics and Processes •Part III. The Effects of Time 9. Geochronology Drainage Pattern Evolution Channel Changes with Time The word slope has two geomorphic applications.
Used in a general sense, “slope” refers to any geometric element of the earth's solid surface; the entire landscape is made up of slope elements and thus the science of geomorphology is largely concerned with the study of slopes.
There is no genetic or locational connotation to the word “slope”; slopes may be subaerial, submarine (or by. Revision 0 September North Anna Early Site Permit Application Part 2 - Site Safety Analysis Report Logs of Borings As noted in Sectiontwo sample borings were drilled on or close to the existing 2h:1v slope.
Studies across a broad range of drainage basins have established a positive correlation between mean slope gradient and denudation rates. It has been suggested, however, that this relationship breaks down for catchments where slopes are at their threshold angle of stability because, in such cases, denudation is controlled by the rate of tectonic uplift through the rate of channel incision and.
Topography affect slope hydrological processes and thus slope stability, and has been studied by several researchers (e.g.
Sidle and Onda,Xu et al., ) Topographic features that. rmations. Slope stability in bedrock units is a function of lithology and titude of planar discontinuities. Except for dominantly shaly units, most!drock formations have moderate to high stability in cut slopes greater an 25 degrees, providing that planar discontinuities, such as bedding.
Full text of "Engineering characteristics of the rocks of Pennsylvania: environmental geology supplement to the state geologic map / by Alan R.
Geyer and J. Peter Wilshusen, Pennsylvania Geological Survey. 2d ed., revised, See other formats. In Central Appalachia (CAPP) where the company’s operations are headquartered, Rhino’s subsidiary, Central Appalachian Mining (CAM) operates four underground and three surface mines.
Rhino’s subsidiary Rhino Eastern also holds a 51% equity interest in a joint venture with Patriot Energy that includes one underground metallurgical mine.
This numerical modelling of landscape evolution has been built around formulation of bedrock river processes and slope processes, and has mostly focused on high‐elevation passive continental margins and convergent zones; these models now routinely include flexural and denudational isostasy. This requirement is controversial in the steeply sloping Appalachian (U.S.A.) mining region.
The major goal of this research was to objectively evaluate the long-term slope stability and potential erosivity of central Appalachian AOC landforms.
Many AOC backfills in this region face long-term stability problems. Central and Southern Appalachian Geomorphology—Tennessee, Virginia, and West Virginia: Maryville, Tennessee to Washington, D.C. July 2‒9,Volume References Related.
Additionally, a mathematical denudation model is applied to take into account the effect of exogenic processes on the slope. The study results show that two periods of normal faulting in conjunction with massive interim denudational scarp recess is a valid model for the evolution of the northern wall of eastern Candor Chasma.
Rates of surface processes on slopes, slope retreat and denudation. Rates of surficial rock creep on hillslopes in vVestern Colorado. Relation of soil creep to earth flow in the Appalachian Plateaus. Purchase Engineering Sites - 1st Edition.
Print Book & E-Book. ISBN We employ a numerical surface processes model to study the controls on postbreakup landscape development and denudational history of the southeast African margin.
Apatite fission track data, presented in the companion paper, suggest that the Drakensberg Escarpment formed by rapid postbreakup river incision seaward of a preexisting drainage divide, located close to its present. Abstract.
Landsliding is a recurring process in the southern Appalachian Highlands (SAH) region of the Central Hardwood Region. Debris flows, dominant among landslide processes in the SAH, are triggered when rainfall increases pore-water pressures in steep, soil-mantled slopes.
Over short timescales, the impact of life is quite apparent: rock weathering, soil formation and erosion, slope stability and river dynamics are directly influenced by biotic processes that. Clark, G.M.,Debris slide / debris flow events in the Appalachians south of the glacial border; Processes, site factors, and hillslope development in selected historical events: Geological Society of America Abstracts with Programs, v.
16, p. Clark, G.M.,Debris slide and debris flow historical events in the Appalachians south of.Modern fluvial, aeolian, and slope processes are ineffectual in either creating or modifying these landscapes.
One particularly brief exposure of complex slope deposits was documented at Haines Corner, Camden County, during the field work () for the Surficial Geologic Map of southern and central New Jersey.C.N., eds., From the Shield to the Sea: Geological Field Trips from the Joint Meeting of the GSA Northeastern and North- Central Sections: Geological Society of America Field Gu p.
85, Gray, R. E. and Gardner, G. D. "Processes of Colluvial Slope Development, McMechen, WV." In. Proceedings of the Symposium of the.