19th March 2014, 10:13 AM
I was kinda presuming that when you start an excavation that gravity informed you which way was down and that this would then orientate the stratigraphic terms lowest and bottom. How does it work if you had to clean the picture but it was face down on the floor. Wax I don't see how you work out the chronological order without the direct physical edge between deposits.
.....nature was dead and the past does not exist