[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]
Re: Public Database of Geologic Formation Ages?
I'm having a surprising amount of trouble finding precise ages for
geologic formations. Is there a public database available with the
ages of a significant number of stratigraphic units?
It's actually not surprising at all, because many formations simply
cannot be dated radiometrically, and others that could be haven't been
because it requires effort and money.
Worse, I'm having trouble finding exact numbers for many units. I
understand the gist of say, "late Maastrichtian" but I need exact
numbers to enter into the timeline template and to enter guesstimates
as to what exact numbers the authors meant by this would violate
Wikipedia's policy forbidding original research.
In most cases, the authors simply don't mean exact numbers, because they
can't do absolute dating.