Also, real quick and I hope this is the right spot to ask this, Henry Morris did a study a few years back that collected all the uniformitarian ways to rate the age of the earth, outside of radiocarbon dating (is that the right word?), and I think he came up with 66 or 67 other means, such as earth's magnetic field decay rate being one of them.
That was quite a bit more than a few years back. He also did not collect "all the uniformitarian ways to rate the age of the earth", he collected only those ways which disagreed with the ways mainstream science actually uses to measure the age of the Earth (see The Age of the Earth for an overview). Morris's table was demolished by Dalrymple in 1984: see How Old is the Earth: SOME CREATIONIST AGES OF THE EARTH.