# Talk:Cline Buttes

Orygun This article says Clines Buttes belongs to the Deschutes Formation. The article currently says the John Day Formation. Do we have an inline citation to corroborate the John Day information? Leitmotiv (talk) 02:41, 5 January 2018 (UTC)

I found same source you did that said Cline Buttes rhyolite came from the Deschutes Formation.  However, I also found a more detailed source (Ref 4, see pp.  5, 8 & 11) that specifically addresses the origin of Cline Buttes.  In discussing the John Day Formation on p. 5 it says:  "Cline Buttes near Redmond is also assumed to be a John Day volcano."  The caption on p. 8 says the same and p. 11 has rationale for why Cline Buttes was likely formed during the John Day period.  The source you cite only addresses the rhyolite found on Cline Buttes, not the origin of the mountain itself.  While rhyolite is the main component of the buttes, it seems to me that the best explanation is that Cline Buttes was originally formed as part of the John Day Formation with additional deposits of rhyolite added by the later Deschutes Formation.  Finally, the source you cite has only a brief statement on p. 2841 about Cline Buttes rhyolite coming from the Deschutes Formation; and the paragraph is really about the limits of that source’s study area.  The point of the paragraph is that Cline Buttes is outside the area being studied.  Not that that source is wrong, but it doesn’t really offer much information on Cline Buttes.  Thanks for your interest and thoughtful comment!--Orygun (talk) 23:22, 7 January 2018 (UTC)