Syncline
Revision as of 21:16, 18 July 2014 by FWhitehurst (talk | contribs) (Created page with "{{publication | image = exploring-for-oil-and-gas-traps.png | width = 120px | series = Treatise in Petroleum Geology | title = Exploring for Oil and Gas Traps | p...")
Elongate concave upward fold