The term 'Geologists' Times' refers to the vast amount of time that geologists study and analyze the Earth's history. The crossword solution for this term is 'EONS', which is a four-letter word meaning an immeasurably long period of time. Geologists use this concept to measure the age of rocks, fossils, and other geological features. By studying the Earth's history, geologists can gain insight into the planet's past and present.