Separation of strata; Paleozoic limestones of the Williston Basin

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ID: 308327
1959
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Abstract
The recognition of thin, persistent marker beds in the Mississippian rocks of the Williston Basin led to a logical separation of these rocks and illustrated the inadequacies of previous subdivisions. Present in number in the dominantly carbonate lower Paleozoic succession in the basin, similar marker beds have been used to yield an understanding of the stratigraphy of these older rocks. Here termed nonsequential beds, the marker beds are clastic interruptions in a carbonate and sulfate succession which commonly exhibits rhythmic variations. They would appear to be the tangible expressions of diastrophic pulses which terminated periods of widespread standstill in sedimentation. The nonsequences marked by the nonsequential beds in the Paleozoic column of the Williston Basin delineate a number of para-time rock units which the writers choose to refer to as \"beds.\" Irrespective of terminology, the method of separation of strata should prove applicable and rewarding in cratonic basins where carbonate-evaporite deposition far exceeds sand-clay deposition.
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openalex_W2042016127 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors A. D. Cumming, J. G. C. M. Fuller, J. W. Porter
Journal american journal of science
Year 1959
DOI
10.2475/ajs.257.10.722
URL
https://ajs.scholasticahq.com/article/58736.pdf
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