Re: LAX
Posted by chris in suburbia on November 19, 2005 at 06:17:15:

Yeah, Todd..the view is better on the way out...as you say. There are uplifted marine terraces that allow the uplift to be quantified.....they form during past interglacial time. At 120,000 years ago the sealevel was a little higher than today...generally I hear +6 m....so if solitary corals are found in shell deposits, and are dates by Uranium-thorium method, and the base of the paleo-seacliff=the old shoreline is higher than 6 m, it has uplifted.....
I have done some work on low-stand shorelines that have sunk deeper than what they formed at. There are wavecut surfaces SE of Anacapa island that are at 700 m water depth, and the lowest sea level was probably -140 m. And, this is on the structural highs...the lows are probably going down fater..
Chris