Hawaiian hot spot dynamics as inferred from the Hf and Pb isotope evolution of Mauna Kea volcano

Author:

Blichert-Toft, Janne, Weis, Dominique, Maerschalk, Claude, Agranier, Arnaud, Albarede, F.

Title:

Hawaiian hot spot dynamics as inferred from the Hf and Pb isotope evolution of Mauna Kea volcano

Periodical:

Geochemistry, Geophysics, Geosystems - G super 3

Year:

2003

Volume:

4

Pages:

27

Subject:

Isotopes Mauna Kea volcano Mauna Loa Volcano Hawaii Scientific Drilling Project

Summary:

The authors report Hf and Pb isotope analyses of samples from Mauna Loa and Mauna Kea from the second Hawaii Scientific Drilling Project core. Both Hf and Pb are less radiogenic in Mauna Loa compared to Mauna Kea. The data suggest that some 500 kyr ago, Mauna Kea was tapping a mantle source similar to that tapped by Kilauea today. Isotopic variability of Pb and He cannot be accounted for by radiogenic ingrowth in a closed system, but requires the mixing of mantle source components with distinct outgassing histories.

URL:

https://ui.adsabs.harvard.edu/abs/2003GGG.....4.8704B/abstract

Date:

February 2003

Collection:

Periodicals