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Why is there this "step" that forms the falls. Is it a harder rock type than that below ? Ruskin ( talk) 05:22, 31 December 2014 (UTC)
This link https://books.google.co.uk/books?id=4n1IAgAAQBAJ&pg=PA170&lpg=PA170&dq=Gibbon+falls+geology&source=bl&ots=FZ8cAbz4UR&sig=HTbC3nhJLdDqLR8yBZZq-T9gTUI&hl=en&sa=X&ei=p4-jVOSvBNPpaLb-gbAL&ved=0CEAQ6AEwBDgK#v=onepage&q=Gibbon%20falls%20geology&f=false States "Eastward beyond Tuff Cliff, the road continues for 3 miles along the front of the slumped caldera block, nearly to Gibbons Falls, then turns abruptly Northward to cross the block. The falls held up by densely welded, vertically jointed Lava Creek Tuff, have retreated from the scarp of the slumped block."
Can anyone who knows elaborate a little. Ruskin ( talk) 06:10, 31 December 2014 (UTC)
This article is rated Start-class on Wikipedia's
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Why is there this "step" that forms the falls. Is it a harder rock type than that below ? Ruskin ( talk) 05:22, 31 December 2014 (UTC)
This link https://books.google.co.uk/books?id=4n1IAgAAQBAJ&pg=PA170&lpg=PA170&dq=Gibbon+falls+geology&source=bl&ots=FZ8cAbz4UR&sig=HTbC3nhJLdDqLR8yBZZq-T9gTUI&hl=en&sa=X&ei=p4-jVOSvBNPpaLb-gbAL&ved=0CEAQ6AEwBDgK#v=onepage&q=Gibbon%20falls%20geology&f=false States "Eastward beyond Tuff Cliff, the road continues for 3 miles along the front of the slumped caldera block, nearly to Gibbons Falls, then turns abruptly Northward to cross the block. The falls held up by densely welded, vertically jointed Lava Creek Tuff, have retreated from the scarp of the slumped block."
Can anyone who knows elaborate a little. Ruskin ( talk) 06:10, 31 December 2014 (UTC)