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Re: Public Database of Geologic Formation Ages?



But I admit that is somewhat arbitrary.

On 23 August 2011 23:21, Vivian Allen <mrvivianallen@googlemail.com> wrote:
> I would just put 66.
>
> On 23 August 2011 23:04, David Marjanovic <david.marjanovic@gmx.at> wrote:
>>>  To the OP - just round to the nearest Ma?
>>
>> Even this is usually not possible.
>>
>> The Maastrichtian lasted from 70.5 to 66.5 Ma ago. So what is "late
>> Maastrichtian"? 66 Ma ago? 67? 68?
>>
>