Expedition to Oz

The Desert Town of Eucla

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Paul Hearty (left) and Michael O’Leary. Hearty inspects a rock sample with the hand lens he keeps handy at all times.

Raymo’s team collects shells from a quarry used for highway construction. It’s as flat, level and large as a Walmart parking lot. They explore other, smaller pits nearby. The researches think these deposits might have undergone groundwater alterations that confound the dating process.

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