Views Read View source View history. Key Points The best-known techniques for radioactive dating are radiocarbon dating, potassium-argon dating and uranium-lead dating. Structural Geologist and a well-known creationist crank long engaged in unsuccessfully attempting to debunk methods of radiometric dating. The extent of the deviation of the apparent slopes, based on random deviates, is predictable theoretically. Lunisolar Solar Lunar Astronomical year numbering. Other elements used for dating, such as rubidium, occur in some minerals but not others, restricting usefulness. By "age" we mean the elapsed time from when the mineral specimen was formed.
For example, in uranium-lead dating, they use rocks containing zircon ZrSiO 4though it can be used on other materials, such as baddeleyite.
Radiometric Dating Radiometric Dating Radioactive dating or radiometric dating is a clever use of naturally occurring radioactivity. ISBN However, if strontium 87 was present in the mineral when it was first formed from molten magma, that amount will be shown by an intercept of the isochron lines on the y-axis, as shown in Fig Fundie schools: Therefore the amount of argon formed provides a direct measurement of the amount of potassium present in the specimen when it was originally formed. This chart of Carbon decay may turn out to be inaccurate. The residence time of 36 Cl in the atmosphere is about 1 week.