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Showing 1 to 20 of 116 for “"Mudstone"”.
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Fluid flow through connected sub-seismic features in mudstone
… is a paucity of basic field research involving mudstone formations, partly due to their susceptibility to erosion making field studies difficult. Other direct applications are radioactive waste disposal and also CO2 storage. A 15 metre thick faulted shale unit, deposited in the distal zone of a …
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Numerical analysis of test pile data from instrumented large diameter bored piles formed in keuper marl (mercia mudstone)
… in-situ piles founded in Keuper marl (Mercia mudstone) is presented. The work is based on instrumented full-scale pile load tests carried out as part of the design of a major Highway communication project in Cardiff, U.K. This research also forms part of an on-going research programme within …
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The Effect of Continuous Flight Auger Pile Installation on the Soil-Pile Interface in the Mercia Mudstone Group
… flight auger piles installed in the Mercia Mudstone Group. Four Continuous Flight Auger (CFA) piles were installed in the Gunthorpe Member of the Mercia Mudstone Group, central England. The effect on the soil-pile interface of overrotation of the auger during installation, and the addition …
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The Porosity And Permeability Distribution Of The Shoal Grainstone And Thrombolitic Facies Of The Smackover Formation In Little Cedar Creek And Brooklyn Fields In Southwestern Alabama
… from top to bottom; (S-1) peritidal lime mudstone-wackestone; (S-2) tidal channel conglomeratic floatstone-rudstone; (S-3) peloid-ooid shoal grainstone-packstone (upper reservoir); (S-4) subtidal lime wackestone-mudstone; (S-5) microbially-influenced packstone-wackestone; (S-6) subtidal …
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Chemostratigraphy of Carbonate Gravity Flows of the Wolfcamp Formation in Crockett County, Midland Basin, Texas
… to lithoclast wackestone, (5) mixed carbonate mudstone, (6) mixed siliceous mudstone, (7) clay-rich argillaceous mudstone, and (8) argillaceous-siliceous mudstone. Gravity flows and depositional processes are characterized: (1) slides to slumps, (2) debris flows, (3) turbidity currents, (4) …
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Upper Jurassic (Oxfordian) Smackover facies characterization at Little Cedar Creek Field, Conecuh County, Alabama
… Smackover, the facies are: (S-1) Peritidal lime mudstone-wackestone; (S-2) tidal channel conglomeratic floatstone-rudstone; (S-3) peloid-ooid shoal grainstone-packstone; (S-4) subtidal lime wackestone-mudstone; (S-5) microbially-influenced packstone-wackestone; (S-6) microbial (thrombolite) …
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Sequence Development on a Sediment-Starved, Low Accommodation Epeiric Carbonate Ramp: Silurian Wabash Platform, USA Mid-continent During Icehouse to Greenhouse Transition
… buildup facies (stromatactis wackestone - lime mudstone, below storm wave-base settings; stromatoporoid skeletal wackestone - floatstone, storm wave-base to fair-weather wave-base; and crinoidal rudstone to packstone; flank facies); non-cherty, skeletal packstone, wackestone, mudstone …
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DEPOSITIONAL SYSTEMS INTERPRETATION OF EARLY PERMIAN MIXED SILICICLASTICS AND CARBONATES, MIDLAND BASIN, TEXAS
… an Upper Wolfcampian and Lower Leonardian-aged mudstone succession. The studied sediments were deposited close to the center of the Midland Basin in a deep water, mixed carbonate and siliciclastic system. Core X was described on a centimeter scale and lithofacies were defined on the basis of …
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Stratigraphic setting of some new and rare phosphate minerals in the Yukon Territory
… minerals has resulted in gradational mudstone-shale couplets. Most rocks of the formation are texturally similar to other phosphate and iron deposits. They are broadly categorized as shale, mudstone, siltstone and sandstone. They are composed of four basic components: pellets and …
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Origin of brecciated intervals and petrophysical analyses: the Three Forks Formation, Williston Basin, North Dakota, U.S.A.
… four lithofacies: (1) a green to gray or red mudstone, (2) a disrupted to mottled, interbedded silty dolostone and mudstone, (3) a silty, tan dolostone, (4) and an interbedded silty dolostone and mudstone. The middle Three Forks consists of a deepening upwards sequence capped by a basin wide …
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The ciliary currents associated with feeding, digestion, and sediment removal in Adula (botula) falcata Gould 1851 (bivalvia, mytilidae)
… as a byssally attached rock borer in soft mudstone reefs at Bolinas and Moss Beach, California (Figure 1). Keen (1963) reports that Adula falcata has been collected from the intertidal to a depth of ten fathoms. Its distribution is from Coos Bay, Oregon, to Cape San Lucas, Lower California …
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Stratigraphy and depositional setting of the Carrington shale facies (Mississippian) of the Williston Basin
… lagoonal shale, apparently deposited behind lime mudstone banks (Waulsortian bioherms), along the eastern margin of the Williston basin during Early Mississippian time.</p> <p>The Scallion subinterval, which is the basal subunit of the Bottineau interval of the Madison Formation in North Dakota, …
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Investigation into the applicability of AVO techniques to coal mine exploration
… ability of AVO to detect a difference between Mudstone and Sandstone roofs over a 6 meters thick coal seam, in the region of Daw Mill (UK). It moreover presents a modification of a triaxial cell aimed at calibrating AVO in the laboratory, and thereby improving the quality of AVO analysis in …
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Shear Fracture Growth in Granular Rocks and Porosity-Permeability Relationships in Mudstones
… to predict failure in granular rock. I model mudstone permeability during consolidation and during fluid injection by simulating porous media flow using the lattice Boltzmann method. I define the mudstone structure using clay platelet thickness, aspect ratio, orientation and pore widths. Over …
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Bivalve associations of the Cannonball Formation (Paleocene, Danian) of North Dakota
… North Dakota. Here, two major lithotypes, mudstone and sandstone, occur. In this area, the Cannonball can be informally subdivided into four lithologic units: lower (primarily thinly-bedded sandstone and mudstone), lower-middle (sandstone), upper-middle (mudstone), and upper (sandstone). …
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State-Wide Sequence Framework of Mixed Carbonate-Siliciclastic Ramp Reservoirs: Mississippian Big Lime, West Virginia, USA
… complexes, deeper ramp and slope wackestone-mudstone, and laminated argillaceous lime mudstone. Maximum flooding surfaces on the ramp slope occur at the base of deeper water facies that overlie lowstand- to transgressive siliciclastic or carbonate complexes, whereas on the ramp, maximum …
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Depositional environments and diagenesis of the Ratcliffe interval, Madison group (Mississippian), Williston Basin, North Dakota
… 3) oolite-peloid packstone, 4) laminated mudstone, 5) quartz siltstone packstone, and 6) anhydrite-dolomite mudstone. These facies were deposited in a regressive setting.</p> <p>The initial deposition consisted mainly of marine limestones. The environment gradually became more restricted …
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The Sequence Stratigraphic Context of Mixed Basin Margin Evaporites in the Harrisburg Member of the Permian Kaibab Formation, Northern Arizona and Southern Utah
… - packstone, restricted subtidal dolomitic mudstone, dolomitic sandstone, peritidal oolitic grainstone as well as gypsum and red siltstones deposited in a sabkha environment.</p> <p>Fourteen stratigraphic sections were measured across northern Arizona and southern Utah to analyze the …
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Stratigraphic Architecture and Paleogeography of the Juniata Formation, Central Appalachians
… including: (1) "proto-vertisols", (2) red shale/mudstone, (3) siltstone/silty mudstone with interbedded sandstones, (4) quartz arenite and sublithic arenite, (5) argillaceous sandstone, (6) hummocky-bedded sandstones and siltstones, and (7) lithic sandstones and conglomerates. These facies are …
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The Geology and Geohydrology of the Sunny Slide Area Mandan, North Dakota
… lithology is poorly consolidated sandstone and mudstone. The zone of shear is located within the mudstone or at the upper contact of it and an overlying silty clay. </p> <p>Field data and precipitation records indicate water to be the major contributing factor to failure in this area. Evidence …
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