AGU 2026 Session: Seismic, Geodetic, and Petrologic Imaging of Active Basaltic Magma Systems

[Denlinger, Roger P]

 

Dear colleagues,

We invite submissions to the AGU 2026 session:

V019. Seismic, Geodetic, and Petrologic Imaging of Active Basaltic Magma Systems

 

Session Description:

Active basaltic magma systems are rich in olivine, and the same system can simultaneously produce both aphyric and picritic lavas, indicating that magmatic fluids and a crystal mush occupy the same magma system. Petrologic studies constrain depths and pressure evolution, geodetic studies constrain pressure and system geometry, and seismic imaging constrains the geometry, structure, and variations in fluid and solid content. All studies profit from the assumption of a relatively simple mixture of basaltic liquid, olivine crystals, supercritical carbon dioxide gas at depth. The similarities in structure and melt content between active systems such as in Iceland, Hawaii, Etna, and the Canary Islands, as well as along spreading ridges, are likely to be more profound than their differences. We invite researchers in petrology, geodesy, and seismology who are working together on models of basaltic systems to discuss similarities between systems in many areas of the world.

 

Primary Section:

Volcanology, Geochemistry and Petrology

 

Conveners: Roger Denlinger, Steve Roecker, Ninfa Bennington, and Heather Winslow

 

Topics of interest include (but are not limited to):

                Petrologic controls on the depths from which lava extracted

                Seismic imaging of magmatic systems

                Mechanical models for magma systems composed of gas, liquid, and crystals

                Seismic detection of magmatic systems composed of mush

 

Abstract submission deadline: August 5, 2026.

 

 

Roger P Denlinger (he/him/his)

US Geological Survey

1300 SE Cardinal Court

Bldg 10, Suite 100

Vancouver, WA  98683

Phone: (360) 993-8904

Fax: (360) 993-8910

ORCID: 0000-0003-0930-0635

Email: ro...@usgs.gov