A calcium–aluminium-rich inclusion or Ca–Al-rich inclusion is a submillimeter- to centimeter-sized light-colored calcium- and aluminium-rich inclusion found in carbonaceous chondrite meteorites. The f
Chondrite meteorite with calcium–aluminium-rich inclusions seen as white specks
Lead–lead dating
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Lead–lead dating is a method for dating geological samples, normally based on 'whole-rock' samples of material such as granite. For most dating requirements it has been superseded by uranium–lead dati
Calcium–aluminium-rich inclusion
…inclusion found in carbonaceous chondrite meteorites. The first high-precision radiometric datings of CAIs involved four samples examined through the Pb–Pb chronometer, yielding a weighted mean age of 4567.30 ± 0.16 Ma. Subsequent studies including additional samples suggest a slightly older age of 4568.3 ± 0.7 Ma to…
Iron meteorite found in Canyon Diablo
Figure 1. Pb–Pb isochron diagram
Pb–Pb isochrons for the oldest known material in the Solar System