Transcription 3. Cladistics 6: Just checking in. After one half-life has elapsed, one half of the atoms of the nuclide in question will have decayed into a "daughter" nuclide or decay product. Phanerozoic Eon:
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RADIOMETRIC TIME SCALE
This scheme has been refined to the point that the error margin in dates of rocks can be as low as less than two million years in two-and-a-half billion years. Half-life is the amount of time it takes for half of the parent isotopes to decay. Metabolic Molecules 2. Uranium—lead dating is often performed on the mineral zircon ZrSiO 4though it can be used on other materials, such as baddeleyiteas well as monazite see: A technician of the U. You are viewing lesson Lesson 6 in chapter 2 of the course:. Water 3.