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Chloride Concentration in Water from the Upper Permeable Zone of the Tertiary Limestone Aquifer System, Southeastern United States
Craig L. Sprinkle
1982, Open-File Report 81-1103
INTRODUCTION The tertiary limestone aquifer system of the southeastern United States is a sequence of carbonate rocks referred to as the Floridan aquifer in Florida and the principal artesian aquifer in Georgia, Alabama, and South Carolina. More than 3 billion gallons of water are pumped daily from the limestone aquifer; and...
Bedform climbing in theory and nature
D. M. Rubin, R. E. Hunter
1982, Sedimentology (29) 121-138
Where bedforms migrate during deposition, they move upward (climb) with respect to the generalized sediment surface. Sediment deposited on each lee slope and not eroded during the passage of a following trough is left behind as a cross-stratified bed. Because sediment is thus transferred from bedforms to underlying strata, bedforms...
A climate-related oxidizing event in deep-sea sediment from the Bering Sea
J.V. Gardner, W.E. Dean, D.H. Klise, J.G. Baldauf
1982, Quaternary Research (18) 91-107
Many cores from the deep basins of the Bering Sea have a thin oxidized zone within otherwise reduced sediment. This oxidized zone began to form about 6000 yr ago and represents an interval of about 3200 yr. Mineralogically, the oxidized and reduced sediments are similar, but chemically they differ. Concentrations...
Seismic reflection study of recessional moraines beneath Lake Superior and their relationship to regional deglaciation
C.W. Landmesser, T.C. Johnson, R. J. Wold
1982, Quaternary Research (17) 173-190
Approximately 8000 km of continuous seismic reflection profiles throughout Lake Superior were examined for evidence of recessional moraines and other ice-margin deposits associated with the retreat of late Wisconsin ice. These features are correlated with the record of glacial-lake evolution in western Lake Superior. An offlapping sequence of glacial and...
Comparisons of 210Pb and pollen methods for determining rates of estuarine sediment accumulation
G. S. Brush, E.A. Martin, R.S. DeFries, C. A. Rice
1982, Quaternary Research (18) 196-217
Comparisons of sedimentation rates obtained by 210Pb and pollen analyses of 1-m cores collected throughout the Potomac Estuary show good agreement in the majority of cores that can be analyzed by both methods. Most of the discrepancy between the methods can be explained by the analytical precision of the 210Pb method and...