RELATIVE AGES FROM ROCK STRATA AND FOSSILS
EVEN BEFORE ABSOLUTE DATING DISCOVERED, GEOLOGISTS KNEW EARTH
WAS VERY OLDHUTTON (1780's) REVOLUTIONIZED SCIENCE BY REALIZING MILLIONS OF YEARS NEEDED FOR
SLOW ACCUMULATION OF SEDIMENTS (sand, etc) TO BUILD UP THICK ROCK LAYERSROCKS SHOWED "
UNIFORMITARIANISM" - TODAY'S PROCESSES WERE SIMILAR IN PAST- INSTEAD OF "CATASTROPHISM" WHICH ASSUMED EXTRAORDINARY EVENTS (BIBLICAL FLOOD, etc) A SHORT TIME (thousands of years) AGOROCK STRATA CAN BE TRACED OVER LARGE DISTANCES, SO THEIR POSITIONS CAN BE USED TO ESTABLISH RELATIVE AGES AND HISTORY OF EVENTS
FOSSILS IN ROCKS CAN BE USED AS MARKERS AND GIVE RELATIVE AGES
___________________________________________________
NOTE: DISCOVERY OF LONG GEOLOGIC TIME AND BIOLOGICAL EVOLUTION WERE RELATED