UH Hilo Center for Maunakea Stewardship - Research Library

High-frequency isotopic variations in the Mauna Kea tholeiitic basalt sequence: Melt zone dispersivity and chromatography

Author:
DePaolo, Donald J.
Title:
High-frequency isotopic variations in the Mauna Kea tholeiitic basalt sequence: Melt zone dispersivity and chromatography
Periodical:
Journal of Geophysical Research
Year:
1996
Volume:
101
Pages:
11,855-11,864
Subject:
Hawaii Scientific Drilling Project Lava analysis
Summary:
One of two objectives of the Hawaii Scientific Drilling Project, (HSDP), is to systematically sample and characterize the lava output of Mauna Kea, a Hawaiian volcano, in terms of isotopic ratios of Sr, Nd, Pb, He, and Os. This stratigraphically-controlled sequence of data can help to better understand the origin of plume material in the mantle. However, another objective is to assess certain aspects of the partial melting process itself. As a result, this paper focuses on the small-amplitude, high-frequency variations of isotopic ratios through the Mauna Kea tholeiitic lava sequence on the island of Hawaii. It also presents an analysis in terms of the "hydrological" properties of the melt zone. The analysis requires systematic sampling coupled with a reasonably good knowledge of the time scale of lava accumulation.
Label:
Geology
Collection:
Periodicals