Where would the most lead be found in a radiometric analysis of a 5-foot,millions of years old deposit of volcanic ash?

Question

Quizplus · Accepted Answer

Lead, being a heavier element, tends to settle toward the bottom of deposits over time due to gravitational differentiation. In a deposit like volcanic ash that has been undisturbed for millions of years, the most lead would be found at the bottom as it gradually sinks through the less dense materials above it.

Where Would the Most Lead Be Found in a Radiometric