Sauk sequence

Sauk sequence

The Sauk sequence was the earliest of the six cratonic sequences that have occurred during the Phanerozoic (followed by the Tippecanoe, Kaskaskia, Absaroka, Zuñi, and Tejas). It dates from the late Proterozoic through the early Ordovician, though the marine transgression did not begin in earnest until the middle Cambrian. [Monroe, James S., and Reed Wicander. "The Changing Earth: Exploring Geology and Evolution," 2nd ed. Belmont: West Publishing Company, 1997. ISBN 0-314-09577-2 p. 533]

At its peak, most of North America was covered by the shallow Sauk Sea, save for parts of the Canadian Shield and the islands of the Transcontinental Arch. [Monroe and Wicander, p. 533] The stratigraphy of the Sauk sequence indicates shallow-water deposition, primarily consisting of well-sorted sandstones and clastic carbonates.

A marine regression ended the Sauk sequence ended early in the Ordovician, to be followed by the Tippecanoe sequence later in the period. [Monroe and Wicander, pp. 533-4]

References


Wikimedia Foundation. 2010.

Игры ⚽ Поможем написать курсовую

Look at other dictionaries:

  • Tippecanoe sequence — The Tippecanoe sequence was the cratonic sequence that is, the marine transgression that followed the Sauk sequence; it extended from roughly the middle Ordovician to the early Devonian.edimentary characteristicsAfter the regression of the Sauk… …   Wikipedia

  • Cratonic sequence — A cratonic sequence refers to a very large scale lithostratographic sequence that covers a complete marine transgressive regressive cycle across a craton. They are also known as megasequences , stratigraphic sequences , sloss sequence or simply… …   Wikipedia

  • Geology of North America — The geology of North America, like most topics of scientific study, is undergoing progressive investigation by numerous public and private sector earth scientists, academicians, and students. In that regard, the detailed picture is subject to… …   Wikipedia

  • epeirogeny — epeirogenic, epeirogenetic /i puy roh jeuh net ik/, adj. /ep uy roj euh nee/, n. Geol. vertical or tilting movement of the earth s crust, generally affecting broad areas of a continent. Also, epeirogenesis /i puy roh jen euh sis/, epirogeny.… …   Universalium

  • Alan H. Coogan — Dr. Alan Hall Coogan is a former professor of geology at Kent State University. He received his M.A. in paleontology from the University of California, Berkeley in 1957. Dr. Coogan received his Ph.D. from the University of Illinois, Urbana in… …   Wikipedia

  • List of fiction by Russell Kirk — This is a complete list of fictional works by Russell Kirk (1918–94). They comprise only a small portion of his otherwise nonfiction published works.NovelsThe first editions of Kirk s three novels, and the first editions of any revised versions… …   Wikipedia

  • Glacier Peak — Infobox Mountain Name = Glacier Peak Photo = Glacier Peak 7118.jpg Caption = East slope of Glacier Peak with Cool (left), Chocolate (descending from summit), North Guardian and Dusty Glaciers (right) Elevation = convert|10541|ft|m|0|lk=on… …   Wikipedia

  • Lithuanian language — Lithuanian lietuvių kalba Spoken in Lithuania Region Europe Native speakers 3.2 million  (1998) Language family …   Wikipedia

  • Dunwich (Lovecraft) — Dunwich (  /ˈdʌn …   Wikipedia

  • June 2008 Midwest floods — Infobox flood image location=River Flooding.jpg June 10, 2008 name=June 2008 Midwestern U.S. floods duration=June 7 July 1 total damages (USD)= $6 Billion+ total fatalities=13 Deaths areas affected= Illinois, Indiana, Iowa, Missouri, Minnesota… …   Wikipedia

Share the article and excerpts

Direct link
https://en-academic.com/dic.nsf/enwiki/2142263 Do a right-click on the link above
and select “Copy Link”