Abstract

It has been proposed that the Lathrop Wells volcanic center, a late Quaternary basaltic complex in southern Nevada, has erupted more than once. In common with most Quaternary basalts, this volcanic center has proved difficult to date by K/Ar and other commonly employed methods. We have measured the accumulation of 36Cl in 11 samples from lava flows and volcanic bombs and obtained a combined average age of 81 ± 7.9 ka, with no systematic differences between sample subsets collected from different volcanic features. The 36Cl dates do not support a history of multiple eruptions, but neither do they completely preclude the possibility.

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