Scientific methods of dating fossils langoria dating
In a way this field, called geochronology, is some of the purest detective work earth scientists do.
There are two basic approaches: relative age dating, and absolute age dating.
Popular presentations of human evolution show a rather smooth transition of fossils leading to modern humans.
The impression given is that the dating of the individual fossils in that sequence is accurate enough to establish human evolution as a fact.
To present the fossil evidence as a relatively smooth transition leading to modern humans is akin to intellectual dishonesty.
To determine the relative age of different rocks, geologists start with the assumption that unless something has happened, in a sequence of sedimentary rock layers, the newer rock layers will be on top of older ones. This rule is common sense, but it serves as a powerful reference point.
Geologists draw on it and other basic principles ( to determine the relative ages of rocks or features such as faults.
This technique is not restricted to bones; it can also be used on cloth, wood and plant fibers.
Carbon-14 dating has been used successfully on the Dead Sea Scrolls, Minoan ruins and tombs of the pharaohs among other things. The half-life of carbon-14 is approximately 5,730 years. dinosaurs the evolution alleges lived millions of years ago.
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Students not only want to know how old a fossil is, but they want to know how that age was determined.