Dating rock layers worksheet virtual dating games for
Unlike people, you can’t really guess the age of a rock from looking at it.
If you look at a cliff made from sedimentary rock, you’ll notice distinct layers that may even be different colors.
Chart of a few different isotope half lifes: In reality, geologists tend to mix and match relative and absolute age dates to piece together a geologic history.
If a rock has been partially melted, or otherwise metamorphosed, that causes complications for radiometric (absolute) age dating as well.
The narrower a range of time that an animal lived, the better it is as an index of a specific time.
No bones about it, fossils are important age markers.