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Depositional environment of the St. Peter Sandstone deduced by textural analysis

E. J. Amaral and W. A. Pryor
Depositional environment of the St. Peter Sandstone deduced by textural analysis
Journal of Sedimentary Petrology (March 1977) 47 (1): 32-52

Abstract

A detailed investigation of the St. Peter Sandstone of southwestern Wisconsin was undertaken to describe its sedimentologic texture in modern quantitative terminology, to determine its environment of deposition, and to test the available techniques of environmental analysis. The St. Peter Sandstone of southwestern Wisconsin is a fine, moderately well-sorted, nearly symmetrical, mesokurtic sand. Grain-size frequency distributions tend to exhibit a weakly-developed bimodality. Significant regional and stratigraphic variations were observed in mean and maximum grain size, sorting, and skewness, consistent with changes in local paleotopography and regional paleoslope. Environmental interpretations based on five bivariate grain-size parameter combinations and two linear discriminant functions were judged to be inadequate because of serious flaws inherent in these techniques. A more satisfactory. approach toward predicting the sedimentary environment is achieved with two cumulative probability curve techniques and with the regional and stratigraphic variations in single grain-size parameters. A lower foreshore to shallow marine sand bank environment is deduced.


ISSN: 0022-4472
Coden: JSEPAK
Serial Title: Journal of Sedimentary Petrology
Serial Volume: 47
Serial Issue: 1
Title: Depositional environment of the St. Peter Sandstone deduced by textural analysis
Affiliation: Univ. Tex., Dep. Geol. Sci., Austin, Tex., United States
Pages: 32-52
Published: 197703
Text Language: English
Publisher: Society of Economic Paleontologists and Mineralogists, Tulsa, OK, United States
References: 48
Accession Number: 1977-030818
Categories: Sedimentary petrology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. tables, sketch map
N42°30'00" - N47°00'00", W92°49'60" - W86°45'00"
Secondary Affiliation: Univ. Cinn., United States,
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute.
Update Code: 1977
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