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  • File:M98Ch2Fig1.JPG
    ...merican carbonate bank: The geology and economic resources of the Cambrian–Ordovician Sauk megasequence of Laurentia: AAPG Memoir 98, p. 5–13.
    (800 × 915 (269 KB)) - 16:14, 19 August 2014
  • Black Warrior basin
    ...as have been, or presently are, produced from the [[Cambro-Ordovician]], [[Ordovician]], [[Mississippian]], and [[Pennsylvanian]] in the Black Warrior basin.<ref ...merican Carbonate Bank: The Geology and Economic Resources of the Cambrian-Ordovician Sauk Megasequence of Laurentia: [http://store.aapg.org/detail.aspx?id=787 A
    2 KB (308 words) - 16:53, 26 March 2015
  • Template:Period start error
    | ordovician|early ordovician|tremadocian=&plusmn;&nbsp;1.7 |middle ordovician|ordovician iii=&plusmn;&nbsp;1.6
    5 KB (430 words) - 20:50, 4 November 2013
  • File:M98Ch3Fig1.JPG
    ...(2003), Babcock et al. (2005, 2007), and Peng et al. (2004); those for the Ordovician are from Webby et al. (2004) as modified in Bergstrom et al. (2006). Abbrev ...merican carbonate bank: The geology and economic resources of the Cambrian–Ordovician Sauk megasequence of Laurentia: AAPG Memoir 98, p. 15–35.
    (600 × 828 (256 KB)) - 16:27, 19 August 2014
  • File:BasinCenteredGasFig10.jpg
    Geologic column of Ordovician-Devonian rocks in eastern Ohio and western Pennsylvania, Appalachian basin
    (400 × 598 (76 KB)) - 19:30, 14 January 2015
  • Template:Phanerozoic 220px
    {{fossil range/bar|Ordovician|O}}
    1 KB (135 words) - 14:19, 5 November 2013
  • Template:Next period
    |merioneth=ordovician |cambrian=ordovician
    8 KB (905 words) - 20:29, 4 November 2013
  • File:M106Ch01Fig03.jpg
    ...sitional settings in the southern margin of the Tethys (below) during Late Ordovician time (about 440 Ma), modified after Cocks and Torsvik (2002). From F. Berra
    (700 × 1,076 (124 KB)) - 22:21, 17 February 2016
  • Template:Period start
    | ordovician|early ordovician|lower ordovician|tremadocian=485.4 | late early ordovician=479
    6 KB (482 words) - 18:02, 4 November 2013
  • File:M98Ch3Fig2.JPG
    ...wer Ordovician) part of the Sauk megasequence and the Middle and the Upper Ordovician part of the Tippecanoe megasequence and their relationship to modern North ...merican carbonate bank: The geology and economic resources of the Cambrian–Ordovician Sauk megasequence of Laurentia: AAPG Memoir 98, p. 15–35.
    (600 × 898 (278 KB)) - 16:31, 19 August 2014
  • Great American carbonate bank
    ...merican carbonate bank: The geology and economic resources of the Cambrian-Ordovician Sauk megasequence of Laurentia ...inent during the [[Cambrian]], [[Early Ordovician]], and earliest [[Middle Ordovician]]. This laterally continuous and diverse sequence has been assigned differe
    5 KB (768 words) - 18:39, 1 August 2016
  • Template:Period color
    |ordovician=rgb(0,169,138) |upper ordovician|late ordovician=rgb(94,204,169)
    7 KB (496 words) - 20:31, 4 November 2013
  • File:M98Ch3Fig5.JPG
    Refined biostratigraphic framework for the uppermost Cambrian and lowest Ordovician of Laurentian North America, showing 25 thin biostratigraphically discrimin ...merican carbonate bank: The geology and economic resources of the Cambrian–Ordovician Sauk megasequence of Laurentia: AAPG Memoir 98, p. 15–35.
    (600 × 674 (275 KB)) - 16:53, 19 August 2014
  • File:M98Ch3Fig4.JPG
    ...) and modern trilobite-based zones within the Upper Cambrian and the Lower Ordovician platform carbonates of Laurentia with references (Refs.) to articles that d ...merican carbonate bank: The geology and economic resources of the Cambrian–Ordovician Sauk megasequence of Laurentia: AAPG Memoir 98, p. 15–35.
    (600 × 775 (326 KB)) - 16:42, 19 August 2014
  • Palynomorphs (organic-walled microfossils)
    ...microfossils (50 μm to [[length::2 mm]] in size) that occur in rocks of [[Ordovician]] to [[Devonian]] age. The biological affinities of chitinozoans are poorly ...are parts of the reproductive cycle of plants and range in age from [[Late Ordovician]] and [[Carboniferous]], respectively, to [[Holocene]]. Although land deriv
    5 KB (582 words) - 15:18, 31 January 2022
  • Template:Annotated image/Extinction
    rect 78 0 117 23 [[Ordovician]] {{Annotation|70|110|[[Ordovician–Silurian extinction event|O–S]]}}
    2 KB (186 words) - 15:15, 23 January 2014
  • China Shale Gas & Liquids - Sichuan Basin
    ...ains up to 6-12 km of Pre-Cambrian Sinian to Cenozoic sediments. The Upper Ordovician to Lower Silurian Wufeng-Longmaxi Formation is widely distributed across th ...lems in the effective development of deep shale gas: a case study of Upper Ordovician Wufeng-Lower Silurian Longmaxi formations in Sichuan Basin and its peripher
    7 KB (985 words) - 18:54, 4 December 2023
  • Chronostratigraphy
    | rowspan="3" | Ordovician || Upper
    3 KB (354 words) - 18:34, 14 March 2019
  • Sequences during low-amplitude, high-frequency cycles
    Examples are the Cambrian–Early Ordovician of the U.S., Early Silurian Interlake Formation of the Williston basin, and Examples of low-amplitude cycles in humid zones include Middle Ordovician peritidal sequences, Middle to Late Devonian Swan Hills–Judy Creek Format
    5 KB (708 words) - 21:00, 6 April 2022
  • Structural exploration: thrust belt example
    ...The white outcrops in the valley in the left foreground are tightly folded Ordovician Bighorn dolomite. .../outcrop outcrops] in the valley in the left foreground are tightly folded Ordovician Bighorn [[dolomite]].
    14 KB (1,897 words) - 20:01, 3 February 2022

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