Slow-logging subtle sequences the gamma-ray log character of glacigenic and other unconsolidated sedimentary sequences
by Bleuer, N.K. (Author) |
Physical Copy ONLY
2004, Slow-logging subtle sequences the gamma-ray log character of glacigenic and other unconsolidated sedimentary sequences: Indiana Geological Survey Special Report 65, 39 p., 27 fig.
Natural gamma-ray logging is the most versatile downhole geophysical method available for use in glacial and related terrain. Log profiles illustrate lithologic variation. They illustrate vertical sequences of glacigenic deposition as well as regionally recognizable till-statigraphic units. Expanded log profiles run at very slow speeds can illustrate cyclic variations in thick loess and in soil and soil-landscape relations. Recognition of depositional-sequence packages can provide an ultimate basis for a natural “genetic stratigraphic classification, a classification emphasizing whole events at all scales. Such log-based packages can provide the framework and the predictive models necessary for both regional and site-specific applications. These models can provide an objective understanding of variation that is critical to both engineering and hydrogeologic concerns.
Keywords: gamma logging, downhole geophysical, stratigraphy, unconsolidated, glacial
Can't find what you're looking for? Feel free to contact us directly:Publication Sales Office
Indiana Geological Survey
611 North Walnut Grove
Bloomington, IN 47405-2208
(812) 855-7636 office phone
(812) 855-2862 office fax