Tippecanoe sequence

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 characteristics

After the regression of the Sauk Sea early in the Ordovician, the exposed craton for a time underwent vigorous erosion, due to being located in a tropical climate; indeed, at this point in the Phanerozoic the North American continent roughly straddled the equator. [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 pp. 533-4]

The Tippecanoe transgression ended this period of erosion, beginning with the deposition of clean sandstones across the craton, followed by abundant carbonate deposition. [Monroe and Wicander, pp. 534-5] In the east these carbonates gradually become shales, representing sediments eroded from highlands created in the Taconic orogeny. [Monroe and Wicander, pp. 534-5]

The Tippecanoe sequence may have been the deepest of the Phanerozoic. At one point during the Silurian period, the Taconic highlands--which later became the Appalachian Mountains--were the only part of North America that was not submerged. [Monroe and Wicander, p. 537] The massive evaporite deposits of the Michigan Basin were created during this period. [Monroe and Wicander, pp. 537-8]

The Tippecanoe sequence ended with a regression in the early Devonian, to be followed later by the Kaskaskia sequence.

ee also

*Cratonic sequence

References


Wikimedia Foundation. 2010.

Игры ⚽ Нужна курсовая?

Look at other dictionaries:

  • 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 …   Wikipedia

  • Kaskaskia sequence — The Kaskaskia sequence was a cratonic sequence that began in the mid Devonian, peaked early in the Mississippian, and ended by mid Mississippian time. A major unconformity separates it from the lower Tippecanoe sequence.The basal that is, the… …   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

  • Gilbert du Motier, marquis de Lafayette — Lafayette …   Wikipedia

  • United States — a republic in the N Western Hemisphere comprising 48 conterminous states, the District of Columbia, and Alaska in North America, and Hawaii in the N Pacific. 267,954,767; conterminous United States, 3,022,387 sq. mi. (7,827,982 sq. km); with… …   Universalium

  • 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
Do a right-click on the link above
and select “Copy Link”