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Filtering by: Creator Zhong, Ma Has journal sim Geochemistry, Geophysics, Geosystems

Age systematics of two young en echelon Samoan volcanic trails

Creator:

Koppers, Anthony A. P., Russell, Jamie A., Roberts, Jed, Jackson, Matthew G., Konter, Jasper G., Wright, Dawn J., Staudigel, Hubert, and Hart, Stanley R.

Abstract:

The volcanic origin of the Samoan archipelago can be explained by one of three models, specifically, by a hot spot forming over a mantle plume, by lithospheric extension resulting from complex subduction tectonics in the region, or by a combination of these two processes, either acting sequentially or synchronously. In...

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analyses for the initial (submarine) phase of Samoan volcanoes, ranging from 13.2 Ma for the westernmost
Nonlinear ⁴⁰Ar/³⁹Ar age systematics along the Gilbert Ridge and Tokelau Seamount Trail and the timing of the Hawaii-Emperor Bend

Creator:

Koppers. Anthony A. P., Staudigel, Hubert, Morgan, Jason Phipps, and Dunca, Robert A.

Abstract:

Over the last three decades the first-order correlation in morphology and orientation of seamount trails has been called upon to support the concept of a ‘‘fixed’’ Pacific hot spot frame of reference and to explain the Hawaii-Emperor bend (HEB) by a dramatic change in Pacific plate motion. In this paper,...

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, 1972a; Duncan and Clague, 1985], which most recently was dated at 47 Ma [Sharp and Clague, 2006]. The