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Upper Cenozoic deposits of the central Delmarva Peninsula, Maryland and Delaware
James Patrick Owens, Charles Storrow Denny
1979, Professional Paper 1067-A
The surface and shallow subsurface sediments of the lower Delmarva Peninsula include beds ranging in age from Miocene to Holocene. The oldest beds appear to be typical shelf deposits of the Chesapeake Group (Calvert-Choptank age). These marine units are overlain by deltaic deposits, which range from fluviatile facies in the...
The Parsonsburg Sand in the central Delmarva Peninsula, Maryland and Delaware
Charles Storrow Denny, J. P. Owens, L.A. Sirkin, Meyer Rubin
1979, Professional Paper 1067-B
The Parsonsburg Sand, a surface sand largely of Wisconsin age, caps terraces east of some of the major streams and mantles broad areas on the uplands of the central Delmarva Peninsula, Maryland and Delaware. The main body of the formation east and south of Salisbury, Md., ranges from 1.25 to...
Seismic refraction profile, Kingdom of Saudi Arabia: field operations, instrumentation, and initial results
H. Richard Blank, J. H. Healy, John Roller, Ralph Lamson, Fred Fisher, Robert McClearn, Steve Allen
1979, Open-File Report 79-1568
In February 1978 a seismic deep-refraction profile was recorded by the USGS along a 1000-km line across the Arabian Shield in western Saudi Arabia. The line begins in Paleozoic and Mesozoic cover rocks near Riyadh on the Arabian Platform, leads southwesterly across three major Precambrian tectonic provinces, traverses Cenozoic rocks...
Generalized thickness of the confining bed overlying the Floridan Aquifer, Southwest Florida Water Management District
Anthony Buono, R. M. Spechler, G. L. Barr, R. M. Wolansky
1979, Open-File Report 79-1171
This map presents the thickness of the confining bed overlying the Floridan aquifer in the Southwest Florida Water Management District and adjacent areas. The bed separates the surficial aquifer from the underlying Floridan aquifer. Lithologic logs and information from quarries were used in conjunction with an unpublished map to compile...
Concentration and fractionation of hydrophobic organic acid constituents from natural waters by liquid chromatography
E.M. Thurman, Ronald L. Malcolm
1979, Water Supply Paper 1817-G
A scheme is presented which used adsorption chromatography with pH gradient elution and size-exclusion chromatography to concentrate and separate hydrophobic organic acids from water. A review of chromatographic processes involved in the flow scheme is also presented. Organic analytes which appear in each aqueous fraction are quantified by dissolved organic...
Small-stream flood investigations in Minnesota, October 1958 to September 1977
George H. Carlson, Kurt T. Gunard
1979, Open-File Report 79-1061
An investigation of flood flows from small drainage basins in Minnesota is being made to aid in the design of bridges, culverts and other highway drainage structures. Results of the investigation provide peak-flow data on streams generally with drainage areas less than 50 square miles, placing particular emphasis on those...