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Evidence for two shield volcanoes exposed on the island of Kauai, Hawaii

¹ U.S. Geological Survey at University of Washington, Seattle, Washington 98195-7940
² Department of Geological Sciences, University of Washington, Seattle, Washington 98195-1310

The island of Kauai has always been interpreted as a single shield volcano, but lavas of previously correlated reversed-to-normal magnetic-polarity transitions on opposite sides of the island differ significantly in isotopic composition. Samples from west Kauai have ⁸⁷Sr/⁸⁶Sr < 0.7037, _Nd 6.14, and ²⁰⁶Pb/²⁰⁴Pb > 18.25; samples from east Kauai have ⁸⁷Sr/⁸⁶Sr > 0.7037, _Nd 6.14, and ²⁰⁶Pb/²⁰⁴Pb < 18.25. Available data suggest that a younger eastern shield grew on the collapsed flank of an older western one.

This article has been cited by other articles:

				R. T. Holcomb, B. K. Nelson, P. W. Reiners, and N.-L. Sawyer Overlapping volcanoes: The origin of Hilo Ridge, Hawaii Geology, June 1, 2000; 28(6): 547 - 550. [Abstract] [Full Text] [PDF]