You searched for: “more azoic
azoic (adjective), more azoic, most azoic
A reference to being devoid of living organisms; without life: Biologists talk about an azoic time when our Earth existed without any life on it.

Specifically, designating the Early Precambrian ("Archean") era, before life appeared on earth because the azoic rocks did not contain any signs of organic remains.