Academic literature on the topic 'Pediments (Geology)'

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Journal articles on the topic "Pediments (Geology)"

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Ufimtsev, G. F. "Pediments of Asia." Russian Journal of Pacific Geology 4, no. 3 (June 2010): 250–59. http://dx.doi.org/10.1134/s1819714010030073.

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Pelletier, J. D. "How do pediments form?: A numerical modeling investigation with comparison to pediments in southern Arizona, USA." Geological Society of America Bulletin 122, no. 11-12 (August 11, 2010): 1815–29. http://dx.doi.org/10.1130/b30128.1.

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King, R. Bruce. "South African pediments and interfluves." Geological Society, London, Special Publications 296, no. 1 (2008): 167–81. http://dx.doi.org/10.1144/sp296.11.

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Stetler, Larry. "Impacts of Material Engineering Properties on Slope Wash and Stability in Fine-Grained Bedrock Slopes at Fossil-Bearing Sites, Badlands National Park, South Dakota, USA." Geosciences 8, no. 7 (July 19, 2018): 267. http://dx.doi.org/10.3390/geosciences8070267.

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Engineering properties of bedrock materials at Badlands National Park were used to develop models for Park managers to assess slope erosion and stability for fossil resource protection. Six fully instrumented sites were used to document slope conditions. Bedrock consisted of Oligocene White River Group rocks. Bulk erosion rates correlated to grain size with silty-sandy materials producing higher mass erosion rates as a function of the silt-to-clay ratio and plastic index. Data indicated that as grain size decreased, plastic index increased leading to a decrease in erodibility. These parameters were used to construct a grain-size proxy, ψ, that was substituted for grain size, D, in Bagnold’s entrainment equation and provided significant improvement in calculation of critical entrainment velocities for fine-grained materials. Hydraulic analyses of slope and pediment surface processes indicated surface roughness was a controlling factor and materials washed from rough steep slopes were effectively transported across smooth low-angle pediments with slope-to-pediment angle ratios of nearly 6:1. Slope stability modeling of ten slopes produced high factors of safety for all slopes, even under saturated conditions and was attributable to clay cohesion. All results were used to construct models that predicted years until net slope erosion equaled 2.5 cm (1 inch). Using these results, Park managers were advised to visit erosion-prone sites on a 1- to 6-year schedule, based on site geology and slope aspect, to adequately protect critical fossil resources from destruction.
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Strudley, Mark W., A. Brad Murray, and P. K. Haff. "Emergence of pediments, tors, and piedmont junctions from a bedrock weathering–regolith thickness feedback." Geology 34, no. 10 (2006): 805. http://dx.doi.org/10.1130/g22482.1.

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Durlet, Christophe, and Jacques Thierry. "Modalites sequentielles de la transgression aaleno-bajocienne sur le sud-est du Bassin parisien." Bulletin de la Société Géologique de France 171, no. 3 (May 1, 2000): 327–39. http://dx.doi.org/10.2113/171.3.327.

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Abstract Sedimentologic, biostratigraphic and diagenetic studies made on Middle Aalenian to Lowermost Bathonian deposits in 25 outcrops of the Burgundy High (southeastern Paris basin) lead to a sequence stratigraphy subdivision of the early Dogger record into 7 third order depositional sequences. These sequences make up a second-order transgressive phase whose lower limit is a tectonically enhanced unconformity (the Mid-Cimmerian unconformity), associated with a large scale uplift during the Upper Toarcian and the Lower Aalenian. In the largest outcrops, where the geometry of sedimentary bodies is observable at the hectometre to kilometre scale, the combination of diagenetic, biostratigraphical, spatial and sedimentologic studies is useful to understand the evolution of sediment distribution in the sequences. This approach also allows the measurement of sea level falls at the origin of the sequence boundaries. For example, we show that Lower Bajocian sequences end with decreases of accommodation space <10 m in amplitude, leading to temporary emergences of some reef complexes. Without interrupting the sedimentation on submarine peri-reef pediments during lowstands, these decreases of a few metres of accomodation space can be related to either tectono-eustatic events or thermo-eustatic events.
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Larue, Jean-Pierre. "Tectonical and morphodynamical evolution of the southern Massif Central border, between the Cesse and Hérault rivers (France)." Bulletin de la Société Géologique de France 175, no. 6 (November 1, 2004): 547–60. http://dx.doi.org/10.2113/175.6.547.

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Abstract Despite numerous researches concerning the Massif Central southern border, there are no certainties about the number and the chronology of the erosion surfaces, the uplift stages of the Massif Central and the incision stages of the rivers. Located on the Massif Central basement and on the Languedocian piedmont, the Orb, Libron and Hérault tributaries basins show a good pattern of shapes and formations, from the Caroux to the littoral plain. Geomorphological and sedimentological study brings some new insights to these questions. Heavy minerals analysis allows us to separate different formations among the deposits located on the erosion surfaces and in the valleys. It is used to reconstruct the main sedimentary pathways. North-south fluxes crossed the Avant-Monts up to the Upper Pliocene, despite of the Miocene uplift. Upper Pliocene uplift of the Avant-Monts caused the bifurcation of the Orb towards the west, the antecedent incision between the Jaur confluence and Cessenon and the stepped pediments and glacis on the Avant-Monts southern border. The longitudinal paleoprofiles argue for a progressive uplift of the Massif Central since the Messinian unconformity. Incision of the valleys began before the Messinian in the Massif Central, but only during the Lower Pleistocene in the Languedocian piedmont.
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Sousa, Francis J., Jason Saleeby, Kenneth A. Farley, Jeffrey R. Unruh, and Max K. Lloyd. "The southern Sierra Nevada pediment, central California." Geosphere 13, no. 1 (November 11, 2016): 82–101. http://dx.doi.org/10.1130/ges01369.1.

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Kováč, Michal, Jozef Hók, Jozef Minár, Rastislav Vojtko, Miroslav Bielik, Radovan Pipík, Miloš Rakús, Ján Kráľ, Martin Šujan, and Silvia Králiková. "Neogene and Quaternary development of the Turiec Basin and landscape in its catchment: a tentative mass balance model." Geologica Carpathica 62, no. 4 (August 1, 2011): 361–79. http://dx.doi.org/10.2478/v10096-011-0027-6.

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Neogene and Quaternary development of the Turiec Basin and landscape in its catchment: a tentative mass balance modelThe development of the Turiec Basin and landscape evolution in its catchment has been reconstructed by methods of geological research (structural geology, sedimentology, paleoecology, and geochronological data) as well as by geophysics and geomorphology. The basin and its surrounding mountains were a subject of a mass balance study during periods of tectonic activity, accompanied by considerable altitudinal differentiation of relief and also during quiet periods, characterized by a development of planation surfaces in the mountains. The coarse clastic alluvial fans deposited beneath the offshore pelitic sediments document the rapid Middle Miocene uplift of mountains on the margin of the Turiec Basin. The Late Miocene finegrained sedimentation represents the main fill of this basin and its origin was associated with the formation of planation surfaces in the surrounding mountains. The rapid uplift of the western and northern parts of the catchment area during the latest Miocene and Early Pliocene times further generated the deposition of coarse-grained alluvial fans. The Late Pliocene basin inversion, due to uplift of the whole Western Carpathians mountain chain, was associated with the formation of the Early Quaternary pediment and ultimately with the formation of the Turiec river terrace systems.
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Harrell, James A. "Granite Platforms in the Wichita Mountains, Oklahoma: Pediment Outliers of the Southern High Plains in Texas and New Mexico." Journal of Geology 101, no. 3 (May 1993): 397–403. http://dx.doi.org/10.1086/648232.

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Dissertations / Theses on the topic "Pediments (Geology)"

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Dietz, David Delbert. "Geophysical investigation of concealed bedrock pediments in Central Avra Valley, Pima County, Arizona." Thesis, The University of Arizona, 1985. http://hdl.handle.net/10150/558027.

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"Desert fluvial terraces and their relationship with basin development in the Sonoran Desert, Basin and Range: Case studies from south-central Arizona." Doctoral diss., 2013. http://hdl.handle.net/2286/R.I.18142.

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abstract: A fundamental gap in geomorphic scholarship regards fluvial terraces in small desert drainages and those terraces associated with integrating drainages. This dissertation analyzes four field-based case studies within the Sonoran Desert, south-central Arizona, with the overriding purpose of developing a theory to explain the formative processes and spatial distribution of fluvial terraces in the region. Strath terraces are a common form (Chapters 2, 3, 4) and are created at the expense of bounding pediments that occur on the margins of constraining mountainous drainage boundaries (Chapters 1, 2, 3). Base-level fluctuations of the major drainages cause the formation of new straths at lower elevations. Dramatic pediment adjustment and subsequent regrading follows (Chapter 3), where pediments regrade to strath floodplains. This linkage between pediments and their distal straths is termed the pediment-strath relationship. Stability of the base level of the major drainage leads to lateral migration and straths are carved at the expense of bounding pediments through an erosional asymmetry facilitated by differential rock decay between the channel bank and bed. Fill terraces occur within the Salt River drainage basin as a result of the integration processes that connect formerly endorheic basins (Chapter 4). The topographic, spatial, and sedimentologic relationship of the Stewart Mountain terrace (Chapter 4) points to a different genetic origin than the lower terraces in this basin. The high Stewart Mountain fill terrace records the initial integration of this river. The strath terraces inset below the Stewart Mountain terrace are a result of the pediment-strath relationship. These case studies also reveal that the under-addressed drainage processes of piracy and overflow have significant impacts in the evolution of drainages the lead to both strath and fill terrace formation in this region.
Dissertation/Thesis
Ph.D. Geography 2013
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Books on the topic "Pediments (Geology)"

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Hanʼguk ŭi hwagangam chʻimsik chihyŏng. Sŏul Tʻŭkpyŏlsi: Sŏngsin Yŏja Taehakkyo Chʻulpʻanbu, 2002.

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J, Alexandre, and Symoens J. J, eds. Stone-lines: Journée d'étude, Bruxelles, 24 mars 1987 : actes. Bruxelles, Belgique: Académie royale des sciences d'outre-mer, 1989.

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Helley, Edward J. The Red Bluff pediment--a datum plane for locating Quaternary structures in the Sacramento Valley, California. [Washington, D.C.]: U.S. G.P.O., 1985.

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Book chapters on the topic "Pediments (Geology)"

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SEARS, JAMES W. "Rift Destabilization of a Proterozoic Epicontinental Pediment: A Model for the Belt–Purcell Basin, North America." In Proterozoic Geology of Western North America and Siberia, 55–64. SEPM (Society for Sedimentary Geology), 2007. http://dx.doi.org/10.2110/pec.07.86.0055.

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Conference papers on the topic "Pediments (Geology)"

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Maciejewski, Timothy J., and Kate C. Miller. "Geophysical interpretation of subsurface geology, pediment of the San Andres Mountains to the Jornada del Muerto Basin, New Mexico." In 49th Annual Fall Field Conference. New Mexico Geological Society, 1998. http://dx.doi.org/10.56577/ffc-49.101.

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