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Showing 1 to 13 of 13 for “"saprolite"”.
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Isovolumetric Weathering of Granite in Wake County, North Carolina
Saprolite, formed by chemical weathering of rocks near the earth's surface, holds water, serves as a parent material of soils, and is a medium for waste disposal. Saprolite formation consumes CO₂ and may stabilize atmospheric CO₂ levels. This dissertation examined the influence of joint orientation …
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An approach to studying soil-landscape relationships in Virginia
… analysis was used to examine soil and saprolite formation. Summit and backslope soils were found to be essentially the same in both morphology and degree of profile development. Sand weathering and clay eluviation/illuviation were the major soil forming processes occurring within these …
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Evaluating Preferential Recharge in Blue Ridge Aquifer Systems Using Saline Tracers
… Tracer migration was monitored through soil, saprolite, and fractured crystalline bedrock for a period of 3 months with chemical, physical, and geophysical techniques. Potassium chloride (KCl) and potassium bromide (KBr) tracers were applied at specific locations on the ground surface to …
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An analysis of solute transport on a harvested hillslope in the southern Appalachian Mountains
… and 4, 16, and 50 m from the stream in the saprolite layer. Samples were removed from the lysimeters 24 hr after 50 centibars of tension were placed on them, and riparian groundwater well and stream samples were collected at the same time as lysimeter samples. Collection of samples from the …
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Geology, mineralogy and geochemistry of the Cerro Matoso nickeliferous laterite, Córdoba, Colombia
… by a Limonite zone and Upper and Lower Saprolite zones. The economic silicate-type nickel mineralization at Cerro Matoso is confined to the saprolite zones. Nickel content in parent peridotite ranges from 0.28 to 0.36%, and ore grade cutoff for materials comprising the laterite profile …
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Pedogenesis, weathering processes, and elemental distribution along a soil climosequence in the southern Piedmont
… iii) resilication of gibbsite deep in the saprolite, and iv) recrystallization of halloysite in the soil/saprolite transition zone. Gibbsite forms from both desilication of kaolinite and by reprecipitation after N a-feldspar dissolution at depth. Halloysite is common to all soils as the …
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The effect of water storages on temporal gravity measurements and the benefits for hydrology
… relevant storage components, namely groundwater, saprolite, soil, top soil and snow storage. The monitoring system comprised also a suction-controlled, weighable, monolith-filled lysimeter, allowing an all time first comparison of a lysimeter and a gravimeter. Lysimeter data were used to estimate …
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Ground-penetrating radar images of a dye tracer test within the unsaturated zone at the Susquehanna-Shale Hills CZO
… Both sites showed dye penetrating down to saprolite (-0.40 m); however, lateral flow migration between the two sites was different. At the Missed Grouse field site, the lateral migration was-0.55 m as an evenly dispersed plume, but at distance of 0.70 m a finger of dye was observed. At the …
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Hydropedology of Problematic Interfluve Transported Soils in the Central Virginia Piedmont
… Drainfield designs should utilize permeable saprolite beneath transported material and an upslope curtain drain.
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Understanding terrestrial organic carbon export : a time-series approach
… energy of 14C-free OC contained in soil saprolite layers indicate that this process is microbially mediated and that microbial respiration of rock-derived OC likely represents a larger geochemical flux than previously thought. The results presented in this thesis therefore provide novel …
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Understanding terrestrial organic carbon export : a time-series approach
… energy of ¹⁴C-free OC contained in soil saprolite layers indicate that this process is microbially mediated and that microbial respiration of rock-derived OC likely represents a larger geochemical flux than previously thought. The results presented in this thesis therefore provide novel …
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Geology of the Humpback Mountain area of the Blue Ridge in Nelson and Augusta counties, Virginia
… southeast quadrant or were derived in situ from saprolite and colluvial deposits. Loudoun and upper Catoctin Formation arkosic sediments were derived from localized sources, west of the Blue Ridge, and transported in a southwesterly direction parallel to the Appalachian structural trend. …
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The landscape evolution, geochemistry and biogeochemistry of Kangaroo Island
… which is likely to tap into the already leached saprolite or groundwater that has only been recently recharged by meteoric water (diluting any chemical signature of the underlying bedrock). This thesis has been able to demonstrate the potential usefulness as well as challenges associated with …