Accuracy of fossil dating methods Adult phone chat women chat free
This date would mean that men lived during the time of the dinosaurs and would upset the evolutionary timescale.So new samples were sent and finally a date of 2.4 million years was eventually accepted (Since evolutionary theory is generally assumed to be true, it is to be expected that dates that do not fit the evolutionary timescale will be reexamined or dismissed.If this rock is above a fossil, that fossil can be dated as “older” than the volcanic rock above it.article on “Archaeology” explains: “Potassium-argon dating provides approximate dates for sites in early prehistory.
When the original sample of the volcanic tuff was given to the laboratory, the potassium-argon date was about 230 million years.
explains: “Carbon-14 dating, also called radiocarbon dating, [is a] method of age determination that depends upon the decay to nitrogen of radiocarbon (carbon-14).
Carbon-14 is continually formed in nature by the interaction of neutrons with nitrogen-14 in the Earth’s atmosphere; the neutrons required for this reaction are produced by cosmic rays interacting with the atmosphere. is absorbed from the air by green plants and then passed on to animals through the food chain.
The ratio of these elements can indicate the age of a geologic layer, generally since it last underwent a metamorphosis, such as melting under the heat of molten lava from a volcanic eruption.
Thus, geologic layers rich in volcanic deposits lend themselves to potassium-argon dating.” Sometimes radiometric dating methods give results that are totally wrong.
Geologists use this method to date volcanic rocks that may be as much as 4 billion to 5 billion years old.