Statistical Analysis of Low-Level Radioactivity of Pennsylvanian Black Fissile Shale in Illinois

Krumbein, W. C.; Slack, Howard A.

doi:10.1130/0016-7606(1956)67[739:saolro]2.0.co;2

Cited by 49 publications

(32 citation statements)

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“…The author believes, however, that if analyses were available on numerous samples systematically selected from a shale unit in a small area, a clear-cut relation could be shown to exist among the three constituents, uranium, phosphate, and organic matter. This conclusion is almost opposite to that reached by Krumbein and Slack (1956) in their statistical analysis of the distribution of radioactivity in the Pennsylvanian black shale overlying "Coal No. 6" in Illinois.…”

Section: Black Shales Of Pennsylvanian Age In Illinoiscontrasting

confidence: 52%

Oil yield and uranium content of black shales

Swanson¹

1960

Professional Paper

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Section: Black Shales Of Pennsylvanian Age In Illinoiscontrasting

confidence: 52%

Oil yield and uranium content of black shales

Swanson¹

1960

Professional Paper

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“…Complete computational details are available (Webster and Oliver 1990) and a practical application of hierarchical analysis of variance is given by Krumbein and Slack (1956). Significance tests were performed on the data from each site to determine whether each group of samples could reasonably have come from a single population.…”

Section: Methods 1 : Analysis Of Variancementioning

confidence: 99%

Estimating the Variability of Active‐Layer Thaw Depth in Two Physiographic Regions of Northern Alaska

Gomersall¹,

Hinkel²

2001

Geographical Analysis

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The active layer is the zone above permafrost that experiences seasonal freeze and thaw. Active-layer (0-3 meters) at the Foothills sites, presumably rejecting the infuence of frost boils and tussock vegetation on ground heatfow. In contrast, thaw variation at the Coastal Plain sites occurs at distances exceeding 10 meters, and is attributed to the infuence of welldeveloped networks of ice-wedge polygons and the presence of drained thaw-lake basins. This information was used to determine an ongoing sampling scheme for each site and to assess the suitability of each method of analysis.Global warming is one of the most important issues facing humans in polar regions. The tasks of quantifylng the magnitude of warming to date and predicting likely future temperature trends are complex. It is generally agreed that there has been a warming at high latitudes of 0.3-0.6" C during the last century (Ledley et al. 1999). It This research was supported by grants from the National Science Foundation to KMH (OPP-9529783 and 9732051). The authors are grateful to the Ukpeagvik Inupiat Co oration for administrative assistance and access to the Barrow Environmental Observatory. They gratefug acknowledge the useful remarks of the two anonymous reviewers.Claire E. Gomersall is a graduate student and Kenneth M. Hinkel is a professor of geography at the University of Cincinnati.

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“…More specialized models have been employed in geochemical sampling by Krumbein and Slack (1956) and by Baird, Mclntyre, Welday, and Madlem (1964), and models similar to theirs are currently being used in several geochemical investigations by the U.S. Geological Survey. The purpose of each such investigation is to determine the type of variation present in a rock body and to devise an efficient sampling plan based on the type of variation found.…”

Section: Special Models For Geochemical Samplingmentioning

confidence: 99%

Theory of error in geochemical data

Miesch¹

1967

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Statistical Analysis of Low-Level Radioactivity of Pennsylvanian Black Fissile Shale in Illinois

Cited by 49 publications

References 0 publications

Oil yield and uranium content of black shales

Oil yield and uranium content of black shales

Estimating the Variability of Active‐Layer Thaw Depth in Two Physiographic Regions of Northern Alaska

Theory of error in geochemical data

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