Phnerozoic History of the Central Mid-continent United States, August 8, 2013

(2013) Phnerozoic History of the Central Mid-continent United States, August 8, 2013. Natural Resources, Department of

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Abstract

The region of the central midcontinent has commonly been termed the "stable interior" of the North American continent. The magnitudes of Phanerozoic crustal deformation in the cratonic interior certainly are very small compared to those known from active continental margins, and the rates of deformation have been generally slower (Schwab, 1976). Nevertheless, the Phanerozoic sedimentary record in the central mid-continent region is replete with evidences of tectonic activity of surprising diversity and pattern. The central mid-continent, as defined for this report, includes Iowa, Kansas, southeastern South Dakota, Nebraska (excluding the panhandle), southern Minnesota, and Missouri north of 37°N latitude. The Phanerozoic stratigraphic record in the central mid-continent region of North America is divided into six major depositional sequences, each bounded by major interregional unconformities (Sloss, 1963). The structural and stratigraphic development of this region is evaluated utilizing a series of isopach and paleogeologic maps constructed within the general framework of Sloss'.

Item Type: Departmental Report
Keywords: geological, geology, Iowa
Subjects: Natural resources and environment
Natural resources and environment > Earth sciences
ID Code: 26174
Deposited By: Margaret Barr
Deposited On: 10 Jan 2018 14:28
Last Modified: 10 Jan 2018 14:28
URI: http://publications.iowa.gov/id/eprint/26174