Search Results - "Blum, Alex E."

Chemical weathering of a marine terrace chronosequence, Santa Cruz, California. Part II: Solute profiles, gradients and the comparisons of contemporary and long-term weathering rates by White, Art F., Schulz, Marjorie S., Stonestrom, David A., Vivit, Davison V., Fitzpatrick, John, Bullen, Tom D., Maher, Kate, Blum, Alex E.

“…The spatial and temporal changes in hydrology and pore water elemental and 87Sr/ 86Sr compositions are used to determine contemporary weathering rates in a 65-…”
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Chemical weathering of a marine terrace chronosequence, Santa Cruz, California I: Interpreting rates and controls based on soil concentration–depth profiles by White, Art F., Schulz, Marjorie S., Vivit, Davison V., Blum, Alex E., Stonestrom, David A., Anderson, Suzanne P.

“…The spatial and temporal changes in element and mineral concentrations in regolith profiles in a chronosequence developed on marine terraces along coastal…”
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Naturally weathered feldspar surfaces in the Navajo Sandstone aquifer, Black Mesa, Arizona: Electron microscopic characterization by Zhu, Chen, Veblen, David R., Blum, Alex E., Chipera, Stephen J.

“…Naturally weathered feldspar surfaces in the Jurassic Navajo Sandstone at Black Mesa, Arizona, was characterized with high-resolution transmission and…”
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Influence of layer charge and charge distribution of smectites on the flow behaviour and swelling of bentonites by Christidis, George E., Blum, Alex E., Eberl, D.D.

“…The influence of layer charge and charge distribution of dioctahedral smectites on the rheological and swelling properties of bentonites is examined. Layer…”
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Differential rates of feldspar weathering in granitic regoliths by White, Art F., Bullen, Thomas D., Schulz, Marjorie S., Blum, Alex E., Huntington, Thomas G., Peters, Norman E.

“…Differential rates of plagioclase and K-feldspar weathering commonly observed in bedrock and soil environments are examined in terms of chemical kinetic and…”
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Effects of climate on chemical_ weathering in watersheds by White, Art F., Blum, Alex E.

“…Climatic effects on chemical weathering are evaluated by correlating variations On solute concentrations and fluxes with temperature, precipitation, runoff,…”
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Arsenic in sediments, groundwater, and streamwater of a glauconitic Coastal Plain terrain, New Jersey, USA—Chemical “fingerprints” for geogenic and anthropogenic sources by Barringer, Julia L., Reilly, Pamela A., Eberl, Dennis D., Blum, Alex E., Bonin, Jennifer L., Rosman, Robert, Hirst, Barbara, Alebus, Marzooq, Cenno, Kimberly, Gorska, Miroslawa

“…► Arsenic inputs to a Coastal Plain stream are mainly geogenic. ► Arsenic inputs from orchard pesticide residues were not clearly identified. ► The arsenic…”
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The effect of temperature on experimental and natural chemical weathering rates of granitoid rocks by White, Art F., Blum, Alex E., Bullen, Thomas D., Vivit, Davison V., Schulz, Marjorie, Fitzpatrick, John

“…The effects of climatic temperature variations (5–35°C) on chemical weathering are investigated both experimentally using flow-through columns containing fresh…”
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Weathering reactions and hyporheic exchange controls on stream water chemistry in a glacial meltwater stream in the McMurdo Dry Valleys by Gooseff, Michael N., McKnight, Diane M., Lyons, W. Berry, Blum, Alex E.

“…In the McMurdo Dry Valleys, Antarctica, dilute glacial meltwater flows down well‐established streambeds to closed basin lakes during the austral summer. During…”
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Chemical weathering rates of a soil chronosequence on granitic alluvium: III. Hydrochemical evolution and contemporary solute fluxes and rates by White, Art F., Schulz, Marjorie S., Vivit, Davison V., Blum, Alex E., Stonestrom, David A., Harden, Jennifer W.

“…Although long-term changes in solid-state compositions of soil chronosequences have been extensively investigated, this study presents the first detailed…”
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Chemical Weathering in a Tropical Watershed, Luquillo Mountains, Puerto Rico: I. Long-Term Versus Short-Term Weathering Fluxes by White, Art F., Blum, Alex E., Schulz, Marjorie S., Vivit, Davison V., Stonestrom, David A., Larsen, Matthew, Murphy, Sheila F., Eberl, D.

“…The pristine Rio Icacos watershed in the Luquillo Mountains in eastern Puerto Rico has the fastest documented weathering rate of silicate rocks on the Earth’s…”
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Chemical Weathering in a Tropical Watershed, Luquillo Mountains, Puerto Rico: II. Rate and Mechanism of Biotite Weathering by Murphy, Sheila F., Brantley, Susan L., Blum, Alex E., White, Art F., Dong, Hailiang

“…Samples of soil, saprolite, bedrock, and porewater from a lower montane wet forest, the Luquillo Experimental Forest (LEF) in Puerto Rico, were studied to…”
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The nature of porosity in organic-rich mudstones of the Upper Jurassic Kimmeridge Clay Formation, North Sea, offshore United Kingdom by Fishman, Neil S., Hackley, Paul C., Lowers, Heather A., Hill, Ronald J., Egenhoff, Sven O., Eberl, Dennis D., Blum, Alex E.

“…Analyses of organic-rich mudstones from wells that penetrated the Upper Jurassic Kimmeridge Clay Formation, offshore United Kingdom, were performed to evaluate…”
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Controls on soil pore water solutes: An approach for distinguishing between biogenic and lithogenic processes by White, Art F., Schulz, Marjorie S., Vivit, Davison V., Blum, Alex E., Stonestrom, David A.

“…Spatial and temporal variations in pore water compositions are characterized for a deep regolith profile developed on a marine terrace chronosequence near…”
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Chemical weathering rates of a soil chronosequence on granitic alluvium: I. Quantification of mineralogical and surface area changes and calculation of primary silicate reaction rates by White, Art F., Blum, Alex E., Schulz, Marjorie S., Bullen, Tom D., Harden, Jennifer W., Peterson, Maria L.

“…Mineral weathering rates are determined for a series of soils ranging in age from 0.2–3000 Ky developed on alluvial terraces near Merced in the Central Valley…”
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The nature of porosity in organic-rich mudstones of the Upper Jurassic Kimmeridge Clay Formation, North Sea, offshore United Kingdom: Shale Gas and Shale Oil Petrology and Petrophysics by FISHMAN, Neil S, HACKLEY, Paul C, LOWERS, Heather A, HILL, Ronald J, EGENHOFF, Sven O, EBERL, Dennis D, BLUM, Alex E

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Chemical weathering of a soil chronosequence on granitoid alluvium: II. Mineralogic and isotopic constraints on the behavior of strontium by Bullen, Thomas, White, Arthur, Blum, Alex, Harden, Jennifer, Schulz, Marjorie

“…The use of strontium isotopes to evaluate mineral weathering and identify sources of base cations in catchment waters requires an understanding of the behavior…”
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Controls on chemical weathering: small- and large-scale perspectives by Anderson, Suzanne P., Blum, Alex E.

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Role of surface speciation in the low-temperature dissolution of minerals by Blum Lasaga, Alex Antonio

“…A study which reports a comparison of surface species concentrations with the dissolution rates of olivine and albite is presented. Results of the study are…”
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Chemical weathering and controls on the chemistry of infiltrating solutions in a forested watershed, Medicine Bow Mountains, Wyoming by Blum, Alex E

“…Weathering and soil formation in three lodgepole pine stands in the Medicine Bow Mountains, Wyoming, were studied by analysis of soil solutions and associated…”
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