thumbnail

Harmonic Analysis of Sedimentary Cyclic Sequences in Kansas, Midcontinent, USA

Mathematical Geology

By:
,
DOI: 10.1023/A:1022301417788

Links

Abstract

Several stratigraphic sequences in the Upper Carboniferous (Pennsylvanian) in Kansas (Midcontinent, USA) were analyzed quantitatively for periodic repetitions. The sequences were coded by lithologic type into strings of datasets. The strings then were analyzed by an adaptation of a one-dimensional Fourier transform analysis and examined for evidence of periodicity. The method was tested using different states in coding to determine the robustness of the method and data. The most persistent response is in multiples of 8-10 ft (2.5-3.0 m) and probably is dependent on the depositional thickness of the original lithologic units. Other cyclicities occurred in multiples of the basic frequency of 8-10 with persistent ones at 22 and 30 feet (6.5-9.0 m) and large ones at 80 and 160 feet (25-50 m). These levels of thickness relate well to the basic cyclothem and megacyclothem as measured on outcrop. We propose that this approach is a suitable one for analyzing cyclic events in the stratigraphic record.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Harmonic Analysis of Sedimentary Cyclic Sequences in Kansas, Midcontinent, USA
Series title:
Mathematical Geology
DOI:
10.1023/A:1022301417788
Volume
29
Issue:
8
Year Published:
1997
Language:
English
Publisher:
Springer
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
953
Last page:
962
Number of Pages:
10