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D.3.1 Outline the method for dating rocks and fossils using radioisotopes, with reference to 14C and 40K. ____________ - K-40 - For older samples, over 100,000 years old ____________ - C-14/C-13/C-12 - For young samples, from 1000 to 100,000 years old - _____ C14 recent death; ______ C14, old!
Think of it like a teaspoon of cocoa mixed into a cake dough—after a while, the ‘ratio’ of cocoa to flour particles would be roughly the same no matter which part of the cake you sampled.
by Dr Carl Wieland An attempt to explain this very important method of dating and the way in which, when fully understood, it supports a ‘short’ timescale.
In fact, the whole method is a giant ‘clock’ which seems to put a very young upper limit on the age of the atmosphere.
Albinism occurs in North America in approximately one in 20 000 persons.
Explain how the Hardy-Weinberg equation is applied in this example.
Most people accept the current old-earth (OE) age estimate of around 4.6 billion years.