“geological era”可以造什么句，geological era造句

Some elementary anomalies of indium and other elements have been found at the bottom of the stratum, it can be used as the evidence to separate geological era.

The soil contains evidence of the influence of man since the Stone age, bose explains, and this age has already been treated as an independent geological era for a long time.

Looking back at FogBugz circa August 2006 (version 5.0) feels a bit like examining the fossil record from a distant geological era.

But have we really ushered in a new geological era, the so-called Anthropocene?