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Stratigraphic section

A stratigraphic section is a sequence of layers of rocks in the order they were deposited. It is based on the principle of original horizontality, which states that layers of sediment are originally deposited horizontally under the action of gravity.[1]

A stratigraphic section of the Blegny coal mine in Belgium.

Biostratigraphers estimate the age of stratigraphic sections by using the faunal assemblages contained within rock samples from outcrop and drill cores.[2] Geochronologists precisely date rocks within the stratigraphic section to provide better absolute bounds on the timing and rates of deposition.[3] Magnetic stratigraphers look for signs of magnetic reversals in igneous rock units within the drill cores. Other scientists perform stable-isotope studies on the rocks to gain information about past climate.[4] Stratigraphic sections can also be used to locate areas for water, coal, and hydrocarbon extraction, particularly petroleum and natural gas.

A Global Boundary Stratotype Section and Point (GSSP) is an internationally agreed upon reference point on a stratigraphic section which defines the lower boundaries of stages on the geologic time scale.[5] (Recently this has been used to define the base of a system)[6]

Gallery edit

References edit

  1. ^ Levin, H.L. (2009). The Earth Through Time (9 ed.). John Wiley and Sons. p. 15. ISBN 978-0-470-38774-0. Retrieved 28 November 2010.
  2. ^ Hine, Robert. “Biostratigraphy.” Oxford Reference: Dictionary of Biology, 8th ed., Oxford University Press, 2019.
  3. ^ Toscano, M; Lundberg, Joyce (1999). "Submerged Late Pleistocene reefs on the tectonically-stable S.E. Florida margin: high-precision geochronology, stratigraphy, resolution of Substage 5a sea-level elevation, and orbital forcing". Quaternary Science Reviews. 18 (6): 753–767. Bibcode:1999QSRv...18..753T. doi:10.1016/S0277-3791(98)00077-8.
  4. ^ Hodell, David A.; Benson, Richard H.; Kent, Dennis V.; Boersma, Anne; Rakic-El Bied, Kruna (1994). "Magnetostratigraphic, Biostratigraphic, and Stable Isotope Stratigraphy of an Upper Miocene Drill Core from the Salé Briqueterie (Northwestern Morocco): A High-Resolution Chronology for the Messinian Stage". Paleoceanography. 9 (6): 835–855. Bibcode:1994PalOc...9..835H. doi:10.1029/94PA01838.
  5. ^ "Global Boundary Stratotype Section and Points". stratigraphy.org. International Commission on Stratigraphy. Retrieved 2022-04-02.
  6. ^ Knoll, Andrew; Walter, Malcolm; Narbonne, Guy; Christie-Blick, Nicholas (2006). "The Ediacaran Period: a new addition to the geologic time scale". Lethaia. 39 (1): 13–30. doi:10.1080/00241160500409223.


stratigraphic, section, stratigraphic, section, sequence, layers, rocks, order, they, were, deposited, based, principle, original, horizontality, which, states, that, layers, sediment, originally, deposited, horizontally, under, action, gravity, stratigraphic,. A stratigraphic section is a sequence of layers of rocks in the order they were deposited It is based on the principle of original horizontality which states that layers of sediment are originally deposited horizontally under the action of gravity 1 A stratigraphic section of the Blegny coal mine in Belgium Biostratigraphers estimate the age of stratigraphic sections by using the faunal assemblages contained within rock samples from outcrop and drill cores 2 Geochronologists precisely date rocks within the stratigraphic section to provide better absolute bounds on the timing and rates of deposition 3 Magnetic stratigraphers look for signs of magnetic reversals in igneous rock units within the drill cores Other scientists perform stable isotope studies on the rocks to gain information about past climate 4 Stratigraphic sections can also be used to locate areas for water coal and hydrocarbon extraction particularly petroleum and natural gas A Global Boundary Stratotype Section and Point GSSP is an internationally agreed upon reference point on a stratigraphic section which defines the lower boundaries of stages on the geologic time scale 5 Recently this has been used to define the base of a system 6 Gallery edit nbsp A stratigraphic section of Ordovician limestone exposed in central Tennessee nbsp A stratigraphic section of the site where Java Man was found nbsp The Permian through Jurassic stratigraphy of the Colorado Plateau area of southeastern Utah nbsp Strata in Salta Argentina nbsp Stratigraphic section of formations exposed at the surface Mesa Verde National Park Colorado USGS nbsp Stratigraphic section of the Bouldnor Formation nbsp Lithostratigraphy of the Wessex Basin nbsp Stratigraphic section major tectonic events and stratigraphic units that make up the Greater Paleozoic Jurassic and Cretaceous petroleum systems of the eastern Arabian Peninsula References edit Levin H L 2009 The Earth Through Time 9 ed John Wiley and Sons p 15 ISBN 978 0 470 38774 0 Retrieved 28 November 2010 Hine Robert Biostratigraphy Oxford Reference Dictionary of Biology 8th ed Oxford University Press 2019 Toscano M Lundberg Joyce 1999 Submerged Late Pleistocene reefs on the tectonically stable S E Florida margin high precision geochronology stratigraphy resolution of Substage 5a sea level elevation and orbital forcing Quaternary Science Reviews 18 6 753 767 Bibcode 1999QSRv 18 753T doi 10 1016 S0277 3791 98 00077 8 Hodell David A Benson Richard H Kent Dennis V Boersma Anne Rakic El Bied Kruna 1994 Magnetostratigraphic Biostratigraphic and Stable Isotope Stratigraphy of an Upper Miocene Drill Core from the Sale Briqueterie Northwestern Morocco A High Resolution Chronology for the Messinian Stage Paleoceanography 9 6 835 855 Bibcode 1994PalOc 9 835H doi 10 1029 94PA01838 Global Boundary Stratotype Section and Points stratigraphy org International Commission on Stratigraphy Retrieved 2022 04 02 Knoll Andrew Walter Malcolm Narbonne Guy Christie Blick Nicholas 2006 The Ediacaran Period a new addition to the geologic time scale Lethaia 39 1 13 30 doi 10 1080 00241160500409223 nbsp This article about stratigraphy is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Stratigraphic section amp oldid 1167430199, wikipedia, wiki, book, books, library,

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