indiadating - Compare and contrast relative and radiometric dating

In other words, half of the radioactive isotope in a sample would have decayed to Nitrogen-14 (N-14) in just 5,730 years.

C-14 dating of carbon-bearing materials is therefore limited to roughly 50,000 years.

Some claim Genesis in particular, and the Bible in general looks mythical from this standpoint.

compare and contrast relative and radiometric dating-19

The earth precesses (wobbles like a spinning top) around the sun in a series of cycles.

These cycles affect sunlight and hence long-term can form layers in rock.

And OE Christians (theistic evolutionists) see no problem with this dating whilst still accepting biblical creation, see Radiometric Dating - A Christian Perspective.

This is the crucial point: it is claimed by some that an old earth supports evolutionary theory and by implication removes the need for biblical creation.

In some cases these astronomical cycles in rock appear to have been laid down over some 25 million years (and radiometric dating puts the absolute age of the rock at some 200 million years).

Dating Anomalies Here we outline a few dating methods or 'clocks' that present a dating anomaly when referenced to the widely accepted OE age of 4.6 billion years. At the outset we note C-14 cannot be used to directly date the earth for the simple reason that the unstable C-14 isotope has a half-life of just 5,730 years.

The time required for half the original number of parent atoms to decay is called the half life.

Some half-lives are listed below: It follows that uranium-lead, potassium-argon (K-Ar), and Rubidium-Strontium (Rb-Sr) decay can be used for very long time periods, whilst radiocarbon dating can only be used up to about 70,000 years. This uses a simple exponential decay formula linking the original number, Po, of parent atoms in rocks and minerals to the P atoms now present, thereby enabling an estimate of geological age.

Absolute dating supplies a numerical date whilst relative dating places events in time-sequence; both are scientifically useful.

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