Ar-ar dating - 🧡 Clocks in the Rocks

SO17 whole-rock — center lava : The age spectrum Figure 8 shows that the rock contains excess argon, giving a saddle-shaped age spectrum cf.

Accuracy is greater and errors are lower.

The energy-level diagram below is based on data accumulated by McDougall and Harrison.

Carl Swisher organized a team to produce three independent measurements of the age of intact glass beads from the C-1 core drill site in the Chicxulub impact area.

Turner, "Origin of the Anomalous 40Ar- 36Ar Age of Zaire Cubic Diamonds: Excess 40Ar in Pristine Mantle Fluids," Nature, 337 1989 : pp.

However, scientists discovered that it was possible to turn a known proportion of the potassium into argon by irradiating the sample, thereby allowing scientists to measure both the parent and the daughter in the gas phase.