I assume that the form you are referring to is the DS-64 or the DS-82. In both cases there is a place where you need to indicate that your name has changed due to marriage, but I have no idea if the State Department considers marriage in a foreign country as sufficient grounds for a name change or not. Looking at this page from the embassy it looks like if you got married legally in Turkey the Feds probably already know about your name change, so that could make things harder. At this point I think you'll have to call the embassy and get an answer there as to how to approach the name change situation. If they invalidate the passport and let you retain possession of it (which they normally do when it is invalidated) you might be able to check in with the old one and clear immigration and customs on arrival with the new one, since they don't look at your ticket at that point. But the airline may give you trouble trying to check in with an invalid passport and refuse to carry you.

So after all this I'm not so sure I actually gave you any useful information. Sorry.

Thanks for the Cappadocia suggestion. Looks like the same type of stuff we were looking for but with a bit more infrastructure to support it. Quite helpful. ^