Conference Papers

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January 1, 1992

Effects of acidic deposition on the erosion of carbonate stone - experimental results from the U.S. National Acid Precipitation Assessment Program (NAPAP) Effects of acidic deposition on the erosion of carbonate stone - experimental results from the U.S. National Acid Precipitation Assessment Program (NAPAP)

One of the goals of NAPAP-sponsored research on the effects of acidic deposition on carbonate stone has been to quantify the incremental effects of wet and dry deposition of hydrogen ion, sulfur dioxide and nitrogen oxides on stone erosion. Test briquettes and slabs of freshly quarried Indiana limestone and Vermont marble have been exposed to ambient environmental conditions in a long...

Authors

P. A. Baedecker, M.M. Reddy, K.J. Reimann, C.A. Sciammarella

January 1, 1992

Effects of flow and smoltification on the migration rates of spring Chinook salmon and steelhead Effects of flow and smoltification on the migration rates of spring Chinook salmon and steelhead

No abstract available

Authors

J.W. Beeman, D.W. Rondorf

Ecosystems Mission Area, Western Fisheries Research Center

January 1, 1992

Effects of saline ground-water discharge on water quality of the Red River of the North, northeastern North Dakota Effects of saline ground-water discharge on water quality of the Red River of the North, northeastern North Dakota

No abstract available.

Authors

M.L. Strobel, P.J. Gerla

Water Resources Mission Area, Dakota Water Science Center

January 1, 1992

Environmental influences on major waterfowl diseases Environmental influences on major waterfowl diseases

The decline of North American waterfowl resources since the 1960s is well-known to this audience and need not be detailed to establish that population numbers for several key waterfowl species are at or near their lowest levels since records have been kept. Loss of habitat is an accepted major cause for the decline of waterfowl numbers and the wildlife conservation community is...

Authors

M. Friend

Ecosystems Mission Area, National Wildlife Health Center

January 1, 1992

Geochemical heterogeneity in a sand and gravel aquifer: Effect of sediment mineralogy and particle size on the sorption of chlorobenzenes Geochemical heterogeneity in a sand and gravel aquifer: Effect of sediment mineralogy and particle size on the sorption of chlorobenzenes

The effect of particle size, mineralogy and sediment organic carbon (SOC) on solution of tetrachlorobenzene and pentachlorobenzene was evaluated using batch-isotherm experiments on sediment particle-size and mineralogical fractions from a sand and gravel aquifer, Cape Cod, Massachusetts. Concentration of SOC and sorption of chlorobenzenes increase with decreasing particle size. For a...

Authors

L.B. Barber, E.M. Thurman, D.R. Runnells

January 1, 1992

Geology of Keweenawan Supergroup Rocks near the Porcupine Mountains, Ontonagon and Gogebic Counties, Michigan Geology of Keweenawan Supergroup Rocks near the Porcupine Mountains, Ontonagon and Gogebic Counties, Michigan

This field trip examines the geology of rocks of the Keweenawan Supergroup (1 .1 Ga) and related intrusive rocks of the Midcontinent rift system (MRS) in the western part of the northern peninsula of Michigan. The combination of stops includes all formations of the Keweenawan Supergroup in this region. Examination of all described localities requires more than a single day and...

Authors

William F. Cannon, Suzanne W. Nicholson, Cheryl A. Hedgman, Laurel G. Woodruff, Klaus J. Schul

Geology, Energy & Minerals Science Center