Jump to content

Ludlow Epoch: Difference between revisions

From Wikipedia, the free encyclopedia
Browse history interactively
← Previous edit
Content deleted Content added
VisualWikitext
Citation bot (talk | contribs)
Bots
5,439,377 edits
Alter: pages. Add: bibcode, page, volume, doi, issue. Removed proxy/dead URL that duplicated identifier. Removed access-date with no URL. Formatted dashes. | Use this bot. Report bugs. | Suggested by Headbomb | Linked from Wikipedia:WikiProject_Academic_Journals/Journals_cited_by_Wikipedia/Sandbox | #UCB_webform_linked 102/305
Citation bot (talk | contribs)
Bots
5,439,377 edits
Removed parameters. | Use this bot. Report bugs. | #UCB_CommandLine
 
(11 intermediate revisions by 9 users not shown)
Line 1: Line 1:
{{short description|3rd series of the Silurian}}
{{Short description|3rd series of the Silurian}}
{{Infobox geologic timespan
{{Infobox geologic timespan
| name = Ludlow
| name = Ludlow
Line 7: Line 7:
| time_end = 423.0
| time_end = 423.0
| time_end_uncertainty = 2.3
| time_end_uncertainty = 2.3
| image_map =
| image_map = Mollweide Paleographic Map of Earth, 425 Ma (Ludfordian Age).png
| caption_map =
| caption_map = A map of Earth as it appeared 425 million years ago during the Ludlow Epoch, Ludfordian Age
| image_outcrop =
| image_outcrop =
| caption_outcrop =
| caption_outcrop =
Line 17: Line 17:
<!--Etymology-->
<!--Etymology-->
| name_formality = Formal
| name_formality = Formal
| name_accept_date = 1980<ref name="silurianState">{{cite journal |last1=Holland |first1=C. |title=The State of Silurian Stratigraphy |journal=Episodes |date=1982 |volume=1982 |issue=3 |pages=21–23 |doi=10.18814/epiiugs/1982/v5i3/004 |url=https://stratigraphy.org/gssps/files/sheinwoodian-ludfordian.pdf |access-date=11 December 2020}}</ref>
| name_accept_date = 1980<ref name="silurianState">{{cite journal |last1=Holland |first1=C. |title=The State of Silurian Stratigraphy |journal=Episodes |date=1982 |volume=1982 |issue=3 |pages=21–23 |doi=10.18814/epiiugs/1982/v5i3/004 |url=https://stratigraphy.org/gssps/files/sheinwoodian-ludfordian.pdf |access-date=11 December 2020|doi-access=free }}</ref>
| alternate_spellings =
| alternate_spellings =
| synonym1 =
| synonym1 =
Line 44: Line 44:
| lower_gssp_accept_date = 1980<ref name="silurianState"/>
| lower_gssp_accept_date = 1980<ref name="silurianState"/>
| upper_boundary_def = FAD of the Graptolite ''[[Monograptus|Monograptus parultimus]]''.
| upper_boundary_def = FAD of the Graptolite ''[[Monograptus|Monograptus parultimus]]''.
| upper_gssp_location = [[Požáry Section]], [[Řeporyje|Řeporyje District]], [[Prague]], [[Czechia]]
| upper_gssp_location = [[Požáry Section]], [[Prague]]-[[Řeporyje]], [[Czech Republic]]
| upper_gssp_coords = {{Coord|50.0277|N|14.3249|E|display=inline}}
| upper_gssp_coords = {{Coord|50.0277|N|14.3249|E|display=inline}}
| upper_gssp_accept_date = 1984<ref>{{cite journal |last1=Lucas |first1=Sepncer |title=The GSSP Method of Chronostratigraphy: A Critical Review |journal=Frontiers in Earth Science |date=6 November 2018 |volume=6 |page=191 |doi=10.3389/feart.2018.00191 |bibcode=2018FrEaS...6..191L |doi-access=free }}</ref><ref>{{cite journal |last1=Holland |first1=C. |title=Series and Stages of the Silurian System |journal=Episodes |date=June 1985 |volume=8 |issue=2 |pages=101–103 |doi=10.18814/epiiugs/1985/v8i2/005 |url=https://timescalefoundation.org/references/Silurian1.pdf |access-date=11 December 2020|doi-access=free }}</ref>
| upper_gssp_accept_date = 1984<ref>{{cite journal |last1=Lucas |first1=Sepncer |title=The GSSP Method of Chronostratigraphy: A Critical Review |journal=Frontiers in Earth Science |date=6 November 2018 |volume=6 |page=191 |doi=10.3389/feart.2018.00191 |bibcode=2018FrEaS...6..191L |doi-access=free }}</ref><ref>{{cite journal |last1=Holland |first1=C. |title=Series and Stages of the Silurian System |journal=Episodes |date=June 1985 |volume=8 |issue=2 |pages=101–103 |doi=10.18814/epiiugs/1985/v8i2/005 |url=https://timescalefoundation.org/references/Silurian1.pdf |access-date=11 December 2020|doi-access=free }}</ref>
Line 53: Line 53:
| sea_level =
| sea_level =
}}
}}
In the [[geological timescale]], the '''Ludlow epoch''' (from 427.4 ± 0.5 million years ago to 423.0 ± 2.3 million years ago) occurred during the [[Silurian]] period, after the end of the [[Homerian]] age. It is named for the town of [[Ludlow]] in [[Shropshire]], [[England]].
In the [[geological timescale]], the '''Ludlow Epoch''' (from 427.4 ± 0.5 million years ago to 423.0 ± 2.3 million years ago) occurred during the [[Silurian]] Period, after the end of the [[Homerian]] Age. It is named for the town of [[Ludlow]] in [[Shropshire]], [[England]].


The Ludlow epoch is subdivided into two stages: [[Gorstian]] and [[Ludfordian]].
The Ludlow Epoch is subdivided into two stages: [[Gorstian]] and [[Ludfordian]].

== Paleontology ==
=== Arthropods ===
{| class="wikitable" align="center"
|-
! colspan="5" align="center" | [[Arthropods]] of the Ludlow
|-
! Taxa !! Presence !! Location !! Description !! Images
|-
| ''[[Arctinurus]]''
| [[Wenlock epoch]] to Ludlow epoch
| Europe and North America
| Large (up to {{convert|30|cm|in}}) trilobite
| [[File:Arctinurus boltoni.jpg|center|150px]]
|-
|}


==See also==
==See also==
Line 77: Line 61:


==References==
==References==
{{reflist}}
{{Reflist}}


{{Silurian footer}}
{{Geological history|p|p}}
{{Geological history|p|p}}
{{Authority control}}


[[Category:Ludlow epoch| ]]
[[Category:Ludlow epoch| ]]
[[Category:Silurian geochronology|*03]]
[[Category:Silurian geochronology|*03]]
[[Category:Geological epochs]]
[[Category:Geological epochs]]
[[Category:Ludlow first appearances| ]]




{{silurian-stub}}
{{geochronology-stub}}
{{geochronology-stub}}

Latest revision as of 15:04, 13 December 2024

Ludlow
427.4 ± 0.5 – 423.0 ± 2.3 Ma
↓
A map of Earth as it appeared 425 million years ago during the Ludlow Epoch, Ludfordian Age
Chronology
Etymology
Name formalityFormal
Name ratified1980[4]
Usage information
Celestial bodyEarth
Regional usageGlobal (ICS)
Time scale(s) usedICS Time Scale
Definition
Chronological unitEpoch
Stratigraphic unitSeries
Time span formalityFormal
Lower boundary definitionFAD of the Graptolite Saetograptus (Colonograptus) varians
Lower boundary GSSPPitch Coppice, Ludlow, U.K.
52°21′33″N 2°46′38″W / 52.3592°N 2.7772°W / 52.3592; -2.7772
Lower GSSP ratified1980[4]
Upper boundary definitionFAD of the Graptolite Monograptus parultimus.
Upper boundary GSSPPožáry Section, Prague-Řeporyje, Czech Republic
50°01′40″N 14°19′30″E / 50.0277°N 14.3249°E / 50.0277; 14.3249
Upper GSSP ratified1984[5][6]

In the geological timescale, the Ludlow Epoch (from 427.4 ± 0.5 million years ago to 423.0 ± 2.3 million years ago) occurred during the Silurian Period, after the end of the Homerian Age. It is named for the town of Ludlow in Shropshire, England.

The Ludlow Epoch is subdivided into two stages: Gorstian and Ludfordian.

See also

[edit]

References

[edit]
  1. ^ Jeppsson, L.; Calner, M. (2007). "The Silurian Mulde Event and a scenario for secundo—secundo events". Earth and Environmental Science Transactions of the Royal Society of Edinburgh. 93 (02): 135–154. doi:10.1017/S0263593300000377.
  2. ^ Munnecke, A.; Samtleben, C.; Bickert, T. (2003). "The Ireviken Event in the lower Silurian of Gotland, Sweden-relation to similar Palaeozoic and Proterozoic events". Palaeogeography, Palaeoclimatology, Palaeoecology. 195 (1): 99–124. doi:10.1016/S0031-0182(03)00304-3.
  3. ^ "International Chronostratigraphic Chart" (PDF). International Commission on Stratigraphy. September 2023. Retrieved December 16, 2024.
  4. ^ a b Holland, C. (1982). "The State of Silurian Stratigraphy" (PDF). Episodes. 1982 (3): 21–23. doi:10.18814/epiiugs/1982/v5i3/004. Retrieved 11 December 2020.
  5. ^ Lucas, Sepncer (6 November 2018). "The GSSP Method of Chronostratigraphy: A Critical Review". Frontiers in Earth Science. 6: 191. Bibcode:2018FrEaS...6..191L. doi:10.3389/feart.2018.00191.
  6. ^ Holland, C. (June 1985). "Series and Stages of the Silurian System" (PDF). Episodes. 8 (2): 101–103. doi:10.18814/epiiugs/1985/v8i2/005. Retrieved 11 December 2020.


Stub icon

This article related to the Silurian period is a stub. You can help Wikipedia by expanding it.

Stub icon

This geochronology article is a stub. You can help Wikipedia by expanding it.

Retrieved from "https://en.wikipedia.org/enwiki/w/index.php?title=Ludlow_Epoch&oldid=1262879768"