High-resolution geochemical stratigraphy of Mauna Kea flows from the Hawaii Scientific Drilling Project core

Author:

Albarede, Francis

Title:

High-resolution geochemical stratigraphy of Mauna Kea flows from the Hawaii Scientific Drilling Project core

Periodical:

Journal of Geophysical Research

Year:

1996

Volume:

101

Pages:

11,841-11,853

Subject:

Lava flows Hawaii Scientific Drilling Project Trace elements

Summary:

This study investigates a methodology for handling time series of geochemical data in volcanic successions. Trace elements have been measured in the deepest 101 lava flows for their trace element contents by inductively coupled plasma mass spectrometry (ICP-ms) from the Hawaii Scientific Drilling Project (HSDP). Periods of nearly continuous variations in incompatible element ratios suggest that geochemical variability is controlled by reservoirs larger the shallow magma chambers inferred from seismicity and deflation data. The principal component analysis of the differenced data distinctly separates three components associated with olivine plus spinel phenocryst abundance, weathering, and melting conditions and source mineralogy.

Label:

Geology

Collection:

Periodicals