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WikiProject Geology (Rated B-class, High-importance)
WikiProject icon Unconformity is part of WikiProject Geology, an attempt at creating a standardized, informative, comprehensive and easy-to-use geology resource. If you would like to participate, you can choose to edit this article, or visit the project page for more information.
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  • "An unconformity represents time during which no sediments were deposited ". This is not true: the deposited sediments are simply now missing. --Wetman (talk) 04:40, 11 July 2008 (UTC)
Agreed - fixed. Vsmith (talk) 13:07, 11 July 2008 (UTC)


Should there be a complimentary page on conformity (geology)??Thompsma (talk) 19:17, 19 September 2011 (UTC)

As in continuous deposition w/ no break or "missing time"? Seems it is the breaks with or without erosion or tectonism that interests geologists most. Don't really know that you could find references for the conformity concept separate from the un-, dis-, non-, para- ... conformities; to support a separate article. I could be mistaken tho'.
Or maybe an area of long term continuous deposition with abundant fossils preserved ... no "missing links". Or maybe I'm reading too much into your query. Vsmith (talk) 20:43, 19 September 2011 (UTC)
Is there a term that could cover both? I agree that a separate page is probably not the best option and I am not a geologist, so my input here is going to be limited. However, geology texts do contrast conformity with unconformity (e.g., Holmes classics). Perhaps this could be merged and added as a sub-section in deposition (geology)? You are correct, however, that uncomformity is of greater interest - but conformity is its antonym.Thompsma (talk) 21:10, 19 September 2011 (UTC)
The concepts could be discussed in that article - it's a bit stubby as it is. However I don't think a merge is in order - the unconformity article is in need of some help and conformity should also be discussed there. Perhaps I'll dig out my copy of Holmes and see what he had to say ... been awhile. But then maybe I'll use this nice autumn weather to ponder the bluff above my house and the stream channel in my field ... there be unconformities there... Vsmith (talk) 01:36, 20 September 2011 (UTC)

First picture in gallery[edit]

It would be nice if the descriptive text under the first picture in the gallery said where it was. (talk) 12:57, 10 October 2015 (UTC)

I've added a link to Taum Sauk Hydroelectric Power Station, which is where this unconformity is well exposed [1]. Mikenorton (talk) 23:44, 10 October 2015 (UTC)


I've removed this term (and the accompanying diagram) as it seems to be only used on Wikpedia and its mirrors. It may yet become a more widely used term, it is perhaps a useful concept, but there are no supporting sources that I can find. If anyone has a good source for it, I will of course be happy to add it back. Mikenorton (talk) 11:15, 11 January 2016 (UTC)