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Continental drilling for paleoclimatic records: Recommendations from an international workshop Continental drilling for paleoclimatic records: Recommendations from an international workshop

The Workshop, entitled "Continental Drilling for Paleoclimate Records", was sponsored by the Past Global Changes (PAGES) Project, a core project of the International Geosphere-Biosphere Programme (IGBP) and by the GeoForschungsZentrum, Potsdam, Germany, in conjunction with the International Continental Drilling Programme (ICDP). The impetus for the meeting was the need for long...

Seafloor environments within the Boston Harbor- Massachusetts Bay sedimentary system: A regional synthesis Seafloor environments within the Boston Harbor- Massachusetts Bay sedimentary system: A regional synthesis

Modern seafloor sedimentary environments within the glaciated, topographically complex Boston Harbor and Massachusetts Bay area have been interpreted and mapped from an extensive collection of sidescan sonar records and supplemental marine geologic data. Three categories of environments are present that reflect the dominant long-term processes of erosion or nondeposition, deposition, and...
Authors
H.J. Knebel, R.C. Circe

Geometry of sandy deposits at the distal edge of the Mississippi Fan, Gulf of Mexico Geometry of sandy deposits at the distal edge of the Mississippi Fan, Gulf of Mexico

Sidescan sonar provides a map of the seafloor that has greatly improved the understanding of depositional processes on modern deep-sea fans (e.g. Mutti and Normark 1991). Here, we present a sidescan-sonar mosaic from the eastern Gulf of Mexico that images the distal reaches of a channel on the Mississippi Fan and the deposits associated with it (Fig. 41.1). This area is one of several...
Authors
D.C. Twichell, W. C. Schwab, Neil H. Kenyon

Radium and radon in ground water in the Chickies Quartzite, southeastern Pennsylvania Radium and radon in ground water in the Chickies Quartzite, southeastern Pennsylvania

The Chickies Quartzite, a Lower Cambrian-age formation compromised of quartzite and slate overlying a basal conglomerate, forms a narrow ridges and crops out discontinuously over 112 square miles in the Piedmont physiographic province of southeastern Pennsylvania. The formation is a low-yielding, fractured- rock, water-table aquifer recharged primarily by local precipitation. It is the...
Authors
L.A. Senior, K.L. Vogel

A workbook for preparing surface water quality-assurance plans for districts of the U.S. Geological Survey, Water Resources Division A workbook for preparing surface water quality-assurance plans for districts of the U.S. Geological Survey, Water Resources Division

The U.S. Geological Survey, Water Resources Division, has a policy that each District Office is required to prepare a District Surface Water Quality-Assurance Plan. The plan for each District describes the policies and procedures that ensure high quality in the collection, processing, analysis, computer storage, and publication of surface-water data. The guidelines presented in this...
Authors
Donald V. Arvin

Stratigraphic notes, 1994: Three short papers propose changes in stratigraphic nomenclature in Virginia, Kentucky, and Alaska Stratigraphic notes, 1994: Three short papers propose changes in stratigraphic nomenclature in Virginia, Kentucky, and Alaska

No abstract available.
Authors
Jack B. Epstein, Randall C. Orndorff, Eugene K. Rader, Charles L. Rice, David A. Brew, Arthur B. Ford, Glen R. Himmelberg, James L. Drinkwater

Estimating losses to predation of recently released American shad larvae in the Juniata River, Pennsylvania Estimating losses to predation of recently released American shad larvae in the Juniata River, Pennsylvania

Predation on recently released larval American shad Alosa sapidissima was quantified in the Juniata River, Pennsylvania, on 10 occasions during 1991 and 1992. Of the four sites examined (the stocking site and 100, 200, and 350 m downstream) predation on shad larvae was highest at the stocking site; 44% of the total estimated losses occurred within this 30-m zone. Percentage predation...
Authors
J. H. Johnson, N.H. Ringler
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