Relative dating geologic events


20-Jan-2018 21:20

Prior to the late 17th century, geologic time was thought to be the same as historical time.Archbishop James Ussher of Armagh, Ireland, 1654, added up generations from the Old Testament and determined that Earth formed on October 23, 4004 BCE.With out individual time stamps the process of dating these structures could become extremely difficult.To deal with many of these problems geologists utilize two types of geologic time: relative time and absolute time.The most obvious feature of sedimentary rock is its layering.This feature is produced by changes in deposition over time.

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So it was clear that the assumption of a constant, slow decay process was wrong.

Time factors of millions and billions of years is difficult even for adults to comprehend.