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Articles 1 - 10 of 10
Full-Text Articles in Physical Sciences and Mathematics
The Effects Of Evapotranspiration Upon Recharge Using The Stable Isotopes Of Oxygen And Hydrogen In The Carbonate Aquifers Of The Cumberland Plateau In Southeast Kentucky, Lee J. Florea
Lee J Florea, PhD, P.G.
In this brief manuscript, we consider the variation of the stable isotopes of oxygen, δ18O, and hydrogen, δ2H, in samples collected during 2010 and 2011 from precipitation and shallow groundwater along the Cumberland Plateau of southeast Kentucky. These data from the 1,900-ha Redmond Creek karst aquifer lend insight into the source and timing of recharge to shallow groundwater in the epigenic karst of the U.S midcontinent. Specifically, we find that only 43% of precipitation remains as potential recharge after accounting for evapotranspiration, and 85% of this potential recharge occurs during only four two-week sampling periods. The isotopic composition of precipitation …
Application Of A Cave Inventory System To Stimulate Development Of Management Strategies: The Case Of West-Central Florida, Usa, Leslie North
Leslie North
Thermal Fluid And Fault Interactions At The Intersection Of Two Faults, Agua Caliente, California, Rebekah Wood, James Evans
Thermal Fluid And Fault Interactions At The Intersection Of Two Faults, Agua Caliente, California, Rebekah Wood, James Evans
Rebekah Wood
Agua Caliente Springs lies at a unique intersection between the NNW-trending Elsinore fault and the 40° northeast-dipping, likely inactive West Salton detachment fault; it provides an opportunity to study damage zone geometry, fault behavior in crystalline rocks, a left-stepover, microseismicity, and the influence of thermal fluids on rock deformation. The Elsinore fault bounds the northwestern flank of the Tierra Blanca Mountains with strike-slip and normal motion; the detachment fault wraps around the northernmost portion of the mountains. Damage along the Elsinore ranges in thickness from a narrow slip plane to > 100 m along the eastern flank of the Tierra Blanca …
Thermal Fluid And Fault Interactions At The Intersection Of Two Faults, Agua Caliente, California, Rebekah Wood, James P. Evans
Thermal Fluid And Fault Interactions At The Intersection Of Two Faults, Agua Caliente, California, Rebekah Wood, James P. Evans
Rebekah Wood
No abstract provided.
Bedrock Geology Of The East Brookfield 7.5 Min. Quadrangle (Ebq), South-Central Massachusetts: Structural And Petrologic Evidence For The Nature Of Regional Deformation And Kinematics Of The Southern Central Maine Zone, Thomas Bradley Walker
Thomas Bradley Walker
Across-strike shortening from Maine to Connecticut is the most conspicuous orogen-scale feature of the New England Appalachians. Mapping (1:24000) and structural analysis in the EBQ and adjacent quads demonstrate that shortening in the southern Central Maine zone was accommodated by orogen-parallel elongation and orogen-normal flattening and thrusting. Map units are Rangeley Fm. (Sil-Bt-Grt schist and gneiss, Bt-Pl±Grt granofels; thin marble layers); Paxton Fm. (Bt-Pl±Grt granofels; calc-silicate granofels; Bt-Sil-Grt schist); tonalitic Bt orthogneiss (Bt-Pl-Qtz±Grt); migmatitic felsic and mafic gneisses and amphibolite; and leucopegmatites (10-m-scale thickness). Foliations (primarily compositional layering, leucosomes in the plane of flattening, Bt SPO, flattened quartz and feldspar …
Soil Development And Glacial History, West Fork Of Beaver Creek, Uinta Mountains, Utah, Daniel C. Douglass, David M. Mickelson
Soil Development And Glacial History, West Fork Of Beaver Creek, Uinta Mountains, Utah, Daniel C. Douglass, David M. Mickelson
Daniel Douglass
The dominant mechanisms of soil formation on a sequence of Smiths Fork, Blacks Fork, and Pre–Blacks Fork moraines in West Fork of Beaver Creek, Uinta Mountains, Utah, (equivalent to Pinedale, Bull Lake, and Pre–Bull Lake moraines of the Wind River Range, respectively) are clay translocation (argilluviation), increasing soil redness (rubification), and the accumulation of organic matter (melanization) and silt-sized particles. The quantity of clay-sized particles and degree of soil redness increase with soil age, but clay accumulation may plateau in the oldest soils. In contrast, the quantity of accumulated organic matter and abundance of silt-sized particles do not appear to …
Identifying The Stream Erosion Potential Of Cave Levels In Carter Cave State Resort Park, Kentucky, Usa, Eric Peterson, Brianne Jacoby, Toby Dogwiler
Identifying The Stream Erosion Potential Of Cave Levels In Carter Cave State Resort Park, Kentucky, Usa, Eric Peterson, Brianne Jacoby, Toby Dogwiler
Eric Wade Peterson
Cave levels, passages found at similar elevations and formed during the same constant stream base level event, reveal information about paleoclimates and karst geomorphology. The investigation presented here examines how Stream Power Index (SPI) relates to cave levels. The study area, Carter Caves State Resort Park (CCSRP), is a fluviokarst system in northeastern Kentucky containing multiple cave levels. SPI deter-mines the erosive power overland flow based on the assumption that flow accumulation and slope are proportional to potential for sediment entrainment. Part of this digital terrain analysis requires the creation of a flow accumulation raster from a digital elevation model …
Quantitative Characterization Of Glacier State And Dynamics In South Asia And Validation In Alaska Using Repeat Aster Multispectral And Terrain Information., Umesh Haritashya
Quantitative Characterization Of Glacier State And Dynamics In South Asia And Validation In Alaska Using Repeat Aster Multispectral And Terrain Information., Umesh Haritashya
Umesh Haritashya
National Aeronautics and Space Administration (NASA). Total Amount $682,808. Role: Collaborator. Project duration: January 1, 2011 – December 31, 2013.
Using Gis To Identify Cave Levels And Discern The Speleogenesis Of The Carter Caves Karst Area, Kentucky, Lara Harlan, Eric Wade Peterson, Toby J. Dogwiler
Using Gis To Identify Cave Levels And Discern The Speleogenesis Of The Carter Caves Karst Area, Kentucky, Lara Harlan, Eric Wade Peterson, Toby J. Dogwiler
Eric Wade Peterson
Temporal Stability Of Cave Sediments, Kevin Hughes, Eric Wade Peterson
Temporal Stability Of Cave Sediments, Kevin Hughes, Eric Wade Peterson
Eric Wade Peterson