This is mainly because absolute age dating is not precise enough at present.

Assigning absolute ages to rock units on Mars is much more problematic.

Lawyers said there was no absolute age when children were considered able to make decisions like whether they would seek asylum.

In absolute age it covers the time span 33.75 to 32.5 million years BP.

The absolute ages of the landforms are not known.

Studies of early-childhood teachers show they always complain about the youngest students, no matter their absolute age.

The boat began to drift with the current; to Urquhart "it seemed an absolute age before the engine came to life again."

We haven't heard from you for an absolute age.

I've been wanting you to kiss me for absolute ages.

Older periods which predate the reliable fossil record are defined by absolute age.