Please by tonite
2006-11-29 12:14:56 · 4 answers · asked by Kw23 2 in Science & Mathematics ➔ Earth Sciences & Geology
Scientists study rocks that, in most cases, are millions of years old. Radiocarbon dating (radioactive dating) uses the break down of carbon to determine how old the rock is. The oldest date that can be accurately found using carbon dating is around 10,000 years so they would not be able to date a million year old rock.
This is where relative dating comes in. Relative dating can be done in many different ways. Looking at the layers of sediment deposition and counting fossil tree rings in rock formations are just a few ways.
Unlike radiocarbon dating, relative dating can not give an exact measurement. Instead of reporting the date in years, the date is presented as a timeline.
For EXAMPLE:
The top most level of sediment is younger than the level below it and the dike was intruded before the younger level, but after the oldest layer, that means the dike is older than the top level.
I hope this helps!
2006-11-30 05:57:53 · answer #1 · answered by blueice111605 2 · 0⤊ 0⤋
Relative Dating
2016-09-30 03:02:51 · answer #2 · answered by lyon 4 · 0⤊ 0⤋
i might want to be very in contact to be sure if someone can clarify this, no longer because i imagine the courting is erroneous--fairly the opposite--I believe that scientists have overwhelming validated and universal courting ideas so I take them at their "note". nevertheless, it style of feels to me that courting ideas are in protecting with assumptions about the unique composition and that i do not see how that assumption is justified. case in point, i'll actual calculate the "age" of a given pattern in case you tell me the unique quantity of fabric and tell me the quantity of fabric left. From this i'll decide the age from how a lot has radioactively decayed in protecting with measurements of the speed at which stated textile decays...yet how are you going to inform me the unique quantity in a pragmatic experience???
2016-10-07 23:43:50 · answer #3 · answered by ? 4 · 0⤊ 0⤋
when something is really really really old(millions of years). radiocarbon dating for example has a half-life of about 5500 years so for it to complete a full cycle it would take 11000 years. that would be way to small of a time frame to date a rock that was say...10 million years old.
2006-11-29 17:14:00 · answer #4 · answered by Anthony V 2 · 0⤊ 0⤋