Jack Hills
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The Jack Hills are a range of hills in Mid West Western Australia. They are best known as the source of the oldest material of terrestrial origin found to date: Hadean zircons that formed around 4.404
Satellite image
Quartz-pebble metaconglomerate (Jack Hills Quartzite), the rock type that contains Earth's oldest dated mineral grains (detrital zircon)
Late Heavy Bombardment
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The Late Heavy Bombardment, or lunar cataclysm, is a hypothesized astronomical event thought to have occurred approximately 4.1 to 3.8 billion years ago, at a time corresponding to the Neohadean and E
Artist's impression of the Moon during the Late Heavy Bombardment (above) and today (below)
Full Moon 2010
Pingualuit aerial 2007