Talk:Psammite

Geology Mid‑importance

	Geology portal Talk:Psammite 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.GeologyWikipedia:WikiProject GeologyTemplate:WikiProject GeologyGeology articles
Mid	This article has been rated as Mid-importance on the project's importance scale.

Rocks and minerals Low‑importance

	Earth sciences portal Psammite is part of WikiProject Rocks and minerals, an attempt at creating a standardized, informative, comprehensive and easy-to-use rocks and minerals resource. If you would like to participate, you can choose to edit this article, or visit the project page for more information.Rocks and mineralsWikipedia:WikiProject Rocks and mineralsTemplate:WikiProject Rocks and mineralsRocks and minerals articles
Low	This article has been rated as Low-importance on the project's importance scale.

It is requested that a photograph be included in this article to improve its quality.
The external tool WordPress Openverse may be able to locate suitable images on Flickr and other web sites.

Upload

Sedimentary v metamorphic

To what extent is the term used for sedimentary rocks rather than metamorphic rocks? I'm unfamiliar with the former but familiar with the latter. cheers Geopersona (talk) 06:07, 6 September 2019 (UTC)[reply]

It seems to be mostly Russian and Eastern European sources that use psammite and pelite for sedimentary rocks. A quick look at the first 100 results on Google Scholar (after 2015) for "psammite" suggests that this usage represents approximately 10% of published papers. It's clearly not the dominant usage, but it needs to be mentioned in the article. Mikenorton (talk) 13:55, 6 September 2019 (UTC)[reply]

In the "Metamorphic Rocks: A Classification and Glossary of Terms" (a result of IUGS Subcommission on the Systematics of Metamorphic Rocks (SCMR)) "psammite" is one of those terms that its says should have only "restricted use" - that is "are those that are only used locally or rarely and require further definition if used". This flies in the face of what I would call "normal usage", which doesn't look like it's going to change any time soon. That leaves us in a bit of a quandary, as we generally try to stick to IUGS recommended nomenclature. Mikenorton (talk) 14:15, 6 September 2019 (UTC)[reply]