Talk:Pennsylvanian (geology)

Latest comment: 6 years ago by InternetArchiveBot in topic External links modified (January 2018)

AMK152's Geotimeboxes

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AMK152 proposed in edits of 27 December 2006 a geotimebox for this article as follows:


Eon: Proterozoic • Phanerozoic • Future
Era: Neoproterozoic • Paleozoic • Mesozoic
Period: Mississippian • Pennsylvanian • Permian


I feel that the box information that is appropriate for the article is already in the footer, and that other extraenous information, such as previous eras, can be supplied where important, by links from the text. I removed the geotimebox and left the footer, pending discussion. --Bejnar 23:03, 27 December 2006 (UTC)Reply

Epoch ?

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I don't believe that the Pennsylvanian is officially considered a Series or Epoch by the International Commission on Stratigraphy. I think it is usually termed a Subsystem (Sub-Period) of the Carboniferous. The series or epochs of the Carboniferous are the Early (Lower), Middle, and Late (Upper) Mississippian, and the Early (Lower), Middle, and Late (Upper) Pennsylvanian. In other words there are six epochs of the Carboniferous. ICS Paleozoic strata list - Parsa (talk) 16:10, 22 April 2009 (UTC)Reply

this gives no info and it is making me vary mad

Requested move

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The following discussion is an archived discussion of a requested move. Please do not modify it. Subsequent comments should be made in a new section on the talk page. Editors desiring to contest the closing decision should consider a move review. No further edits should be made to this section.

The result of the move request was: moved to Pennsylvanian (geology). The consensus to move is clear and unanimous. With the agreement of the nominator, the argument in favor of the addition of the disambiguating term "(geology)" also has consensus support. Xoloz (talk) 19:27, 14 June 2014 (UTC)Reply



PennsylvanianPennsylvanian age – In light of the recent move of Mississippian to Mississippian age in favor of a disambiguation page, I think this makes sense. Pennsylvanian can refer to the age, the state, or the train, and I see no basis for determining predominance between the age and the state. bd2412 T 15:10, 6 June 2014 (UTC)Reply

(1)   In the context of stratigraphy, "age" is a term with a specific meaning that would be incorrect to use here; the Pennsylvanian time period is an epoch, not an age.
(2)   In stratigraphy, "Pennsylvanian" (and all other such appellations) refers to both a time period and a rock layer (or set of layers), and different terms are used for each; in the Pennsylvanian case, the terms are epoch for the time period, and series for the rock layers. The use of one of these terms in the article title inappropriately excludes the other.
Reference: International Chronostratigraphic Chart
Therefore, I submit that this article should be moved to Pennsylvanian (geology). This solution disambiguates the subject as intended by the original move request, while avoiding the problems with the "age" proposal. (And I should note that, for these same reasons—plus still others relating to insufficient disambiguation from the anthropology topic of Mississippian culture—the recently-renamed Mississippian age article should be moved to Mississippian (geology), as I will propose shortly.) — Jaydiem (talk) 16:28, 12 June 2014 (UTC)Reply
Actually, they're considered sub-systems or sub-periods, but that doesn't change the validity of your arguments - ages they're not. Mikenorton (talk) 18:20, 12 June 2014 (UTC)Reply
Ah, I see what you're saying. Strictly speaking, the series/epochs are the Lower Pennsylvanian, the Middle Pennsylvanian, and the Upper Pennsylvanian, so plain old "Pennsylvanian" is a superset intermediate between them and the Carboniferous system/period—hence, "sub-system" and "sub-period". (Personally, I think I'd prefer "super-series" and "super-epoch", but nobody asked me. ;-) — Jaydiem (talk) 19:51, 12 June 2014 (UTC)Reply
No objection to moving this to Pennsylvanian (geology) (or moving Mississippian age to Mississippian (geology), which I submit can be done speedily as a noncontroversial move). bd2412 T 19:16, 12 June 2014 (UTC)Reply
Thanks for your support! Regarding the Mississippian article: I didn't want to just move it myself, because the previous move discussion was closed only a week ago. Don't want to step on toes needlessly. — Jaydiem (talk) 19:56, 12 June 2014 (UTC)Reply

The above discussion is preserved as an archive of a requested move. Please do not modify it. Subsequent comments should be made in a new section on this talk page or in a move review. No further edits should be made to this section.
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