Talk:Dunham classification

I'm pretty sure that the Dunham Classification system is more widely used than the Folk system. To use the Folk system you need thin sections. With Dunham you only need a hand sample and a hand-lens.

-- Both are used in different contexts, so equally valid. Verisimilus 19:07, 3 February 2007 (UTC)

Pictures
There is now a complete set of pictures of thin sections as examples of the Dunham classification (modified after Embry/Klovan 71) available at commons:Category:Dunham classification. NikelsenH (talk) 19:11, 24 February 2017 (UTC)
 * Very good photos but I want to comment on their copyright status.
 * Their descriptions state "Picture by courtesy of Axel Munnecke, Geozentrum Nordbayern... Source: Own work ... Author: NikelsenH".
 * The relationship between Axel Munnecke, Geozentrum Nordbayern and NikelsenH is currently unknown to all users of Wikipedia and Wikimedia Commons. I suggest that some proof needs to be sent to Wikimedia Commmons, proving that all the owners of the copyright for these photos give their permission for any use that is compatible with a CC-BY-SA-4.0 licence, including commercial use.
 * I suggest that you read about how Wikimedia Commons uses its OTRS system to prove copyright permission.
 * Also, I want to clarify that the author is usually the person who actually took the photos, not the person who put them on Wikipedia or Wikimedia Commmons. GeoWriter (talk) 23:28, 24 February 2017 (UTC)