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Filtering by: Keyword Magma transport Has journal sim Geochemistry, Geophysics, Geosystems

Origin of minor and trace element compositional diversity in anorthitic feldspar phenocrysts and melt inclusions from the Juan de Fuca Ridge

Creator:

Adams, David T., Nielsen, Roger L., Kent, Adam J. R., and Tepley, Frank J., III

Abstract:

Melt inclusions trapped in phenocryst phases are important primarily due to their potential of preserving a significant proportion of the diversity of magma composition prior to modification of the parent magma array during transport through the crust. The goal of this investigation was to evaluate the impact of formational and...

Resource Type:

Article

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the diversity of magma composition prior to modification of the parent magma array during transport
The petrogenesis of plagioclase-phyric basalts at mid-ocean ridges

Creator:

Lange, Amy E., Nielsen, Roger L., Tepley, Frank J., III, and Kent, Adam J. R.

Abstract:

Plagioclase ultraphyric basalts (PUBs) have been sampled along most mid-ocean ridges with ultraslow to intermediate spreading rates. Over the past 40 years, the prevalent models for their origin assume positive buoyancy of plagioclase in basaltic liquids resulting in selective concentration of plagioclase phenocrysts by floatation. However, when the global population...

Resource Type:

Article