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Showing 1 to 14 of 14 for “"Sandy silt"”.
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Paleoenvironmental reconstruction of late quaternary lacustrine sediments (Seibold Site) in southeastern North Dakota
… in ascending order, is a follows: 1) pebbly silt; 2) clayey silt; 3) organic mud; 4) calcareous mud; 5) sandy silt and clay; 6) silty sand; and 7) sandy silt and clay.</p> <p>The stratigraphic sequence and biota suggest a 5-phase history for the area during the last 11,000 years. During phase …
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Περιβάλλοντα αποθέσεως των ιζημάτων του Πηδάσου (Ν.Δ. Πελοπόννησος)
… and beds to be carried out. The lower beds are sandy and clayey silts interbedded with conglomerate and are probably alluvial fan deposits. Overlying is a sei sequence of marine faciès, mostly deposited in a lagoon. Silty sand and clayey silt were probably built up in lagoonal euxinic bottom. …
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Paleoenvironmental analysis of a late Holocene deposit : Stanton site, west-central North Dakota
… section are, in ascending order: (l) gravel; (2) silty, organic, sandy clay; (3) organic silt; (4) silty, sandy, organic clay; (5) organic silt; (6) sandy, silt, organic clay; and (7) sand. A radiocarbon date of wood from the base of unit 2 indicates initiation of deposition at 325±_115 …
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Late Pleistocene and Holocene geology of the Moe Site, New Town, North Dakota
… consists of light yellowish brown, offshore lake silt that was deposited into a glacial lake in Late Wisconsinan time. Unit Three is a layer of glacial sediment consisting of grayish brown pebbly clay loam (Late Wisconsinan). Unit Four consists of fluvial sand and gravel (Late Wisconsinan}. Unit …
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Relationship of the Turtle, Forest, and Park rivers to the history of glacial Lake Agassiz
… glacial Lake Agassiz.</p> <p>Twenty-five feet of sandy silt exposed in a cutbank in the Park River valley suggests fluctuations in base level. Erosion of the valley may have occurred during the Lake Agassiz I-II interval, followed by aggradation as base level rose during Lake Agassiz II time. Sub …
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Constitutive relationships for agricultural soils
… effects of vehicles on soil compaction. Sandy-clay and sandy-silt samples were loaded and unloaded three times to levels of 138 kPa to simulate three passes of an agricultural tractor. An axial loading rate of 200 mm/min was used to include the dynamic effects of rapid loading from the …
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Soil conditioner effects on soil erosion, soil structure and crop performance
… Hilton Experimental Site, east Shropshire and on sandy silt loam soil (Salwick series) at the Plant and Environment Research Unit at Compton Park, Wolverhampton. The main soil conditioner applied was 'Agri-SC' at manufacturer recommended application rates and three other soil conditioners were …
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High- and low-sinuosity stream deposits of the Sentinel Butte Formation (Paleocene) McKenzie County, North Dakota
… trough shaped in cross-section, and consist of sandy silt and clay. Lowsinuosity channel deposits occur as elongate, trough-shaped sand beds that fine upward from a deeply-channeled base. The abundant high-angle planar eras s-stratification and horizontal stratification probably originated in …
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Refining tsunami inundation limits for the 1700 CE Cascadia earthquake: detailed mapping of fine-grained deposits and diatom biostratigraphy at the Salmon River estuary, central Oregon
… evidence of coseismic subsidence and sandy tsunami deposits preserved in coastal wetlands provide tangible evidence of the 1700 CE Cascadia Subduction Zone (CSZ) earthquake and tsunami. Such evidence has been used to evaluate earthquake source models by comparing simulated tsunami …
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Evaluation of the suitably of proposed site for construction of photovoltaic solar facility at Kakamas in the Northern Cape of South Africa
… showed that the study area is comprised of sandy soil with either two or three horizons while the cone penetration results revealed high variable soil consistency and stiffness which ranged from very loose to very stiff soils. The particle size distribution, atterberg limits and grading …
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Quaternary geology of the Knife River Indian Villages National Historic Site
… lithified yellow, brown, gray and white sand, silt, silty clay, and clay. Unit One contains beds of lignite. Unit Two is a layer of glacial sediment consisting of grayish-brown, pebbly clay-loam. Unit Three is fluvial, glacio-fluvial and beach deposits consisting of gray to reddish-brown, silty …
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Geology of southern Nelson County, North Dakota
… indistinctly bedded gravel, poorly bedded sandy silt, ·cross bedded sand and horizontally ledded silt. Most of the units contain an abundance of shale particles with some having shale cobbles 6- to 8-inches in diameter. The maximum thickness of the Coleharbor Formation occurs in two …
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Engineering properties and behavior of silty soils
Silty soils, which exhibit engineering behavior intermediate between sands and clays, pose persistent challenges in geotechnical engineering due to their variable fabric, partial drainage behavior, and difficulty in classification and sampling. This dissertation presents a comprehensive …
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Quaternary geology of Sargent County, North Dakota
… sand and gravel (fluvial channel sediment); silt (lacustrine sediment); silty clay (lacustrine sediment); and silt, sand, silty sand, and clay (turbidity-current sediment). </p><p> The Walsh Formation comprises the remaining 5 percent of the county and includes four facies: clay (lacustrine …