Of or related to a natural process acting as a dynamic physical force on the Earth (faulting, erosion, mountain building resulting in rock formations, etc )
of or relating to or based on geology; "geological formations"; "geologic forces"
9 billion years ago (corresponding to the age of the oldest known rocks) to the present day. It is, in effect, the part of the Earth's history that is recorded in rock strata. The geologic time scale is classified in nested intervals distinguished by characteristic geologic and biologic features. From longest to shortest duration, the intervals are eon, era, period, and epoch
n. The period of time covering the physical formation and development of Earth, especially the period prior to human history. Interval of time occupied by the Earth's geologic history, extending from
Geological means relating to geology. a lengthy geological survey. + geologically geo·logi·cal·ly At least 10,000 of these hectares are geologically unsuitable for housing