Geoelectric magnetotelluric Lower Crustal Conductor

Lower Crustal Conductors and resistors

Electrically conductive and resistant geology structures, geomagnetic fields, geoelectric fields, Lower Crustal Conductor, magnetotellurics… volcanic electromagnetic geology?

researchers are using magnetotelluric, or MT data, which measures the Earth’s subsurface electrical conductivity. Variations in the geomagnetic and geoelectric fields can reveal much about the subsurface structure and temperature, as well as the presence of fluids such as magma…

Schultz said that the images from the latest study are clear enough that by continuously monitoring the geoelectric and geomagnetic fields, they may be able to detect changes in the movement of magma beneath Mount St. Helens, and perhaps other volcanoes.
New imagery solves mystery of why Mount St. Helens is out of line with other volcanoes |

If you interpret with flowing natural electrical forces, electromagnetic resistances, electrochemical reactions…

magnetotelluric Electric Universe geology

Three-dimensional map of the electrical resistivity of the Earth’s crust and uppermost mantle in the southern Washington Cascades volcanic range that has resulted from this study. Red colors indicate the geologic materials are electrically conductive, and blue colors indicate they are electrically resistive.

The major volcanoes are marked with black cone symbols: MSH – Mount Saint Helens, MA – Mount Adams, GR – Goat Rocks, MT – Mount Rainier.

The thin, bright colored band that lies immediately to the west of Mount Saint Helens is interpreted to result from relatively permeable metamorphosed sediments, mainly of marine origin, that are wedged between relatively impermeable and electrically resistive crustal blocks.

The feature marked SLB is the Spirit Lake Batholith, while underneath it the feature marked LCC is a Lower Crustal Conductor that is inferred to be a source of the partially molten material that trickles up from the mantle below and that is the source of the magmas that feed the Cascade volcanoes.

Could Mount Saint Helens and other volcanoes, magmas, eruptions be part of the electric volcano components and systems?

Volcano’s electric resistance geology

magnetotelluric geoelectric electrical resistance

How the partially molten material from below may be diverted around the Spirit Lake Batholith as it rises toward the surface. Two zones of elevated seismic activity marked as MSZ and WRSZ are also seen to align along the electrically conductive feature seen in the resistivity image at the left.

Electric circuits and feedbacks?

In a subduction zone, the volcanic arc marks the location where magma, generated via flux melting in the mantle wedge, migrates through the crust and erupts. While the location of deep magma broadly defines the arc position, here we argue that crustal structures, identified in geophysical data from the Washington Cascades magmatic arc, are equally important in controlling magma ascent and defining the spatial distribution and compositional variability of erupted material.

As imaged by a three-dimensional resistivity model, a broad lower-crustal mush zone containing 3–10% interconnected melt underlies this segment of the arc, interpreted to episodically feed upper-crustal magmatic systems and drive eruptions. Mount St Helens is fed by melt channelled around a mid-Tertiary batholith also imaged in the resistivity model and supported by potential–field data.

Regionally, volcanism and seismicity are almost exclusive of the batholith, while at Mount St Helens, along its margin, the ascent of viscous felsic melt is enabled by deep-seated metasedimentary rocks.
Crustal inheritance and a top-down control on arc magmatism at Mount St Helens

The degree of partial melting required to form a melt can be estimated by considering the relative enrichment of incompatible elements versus compatible elements. Incompatible elements commonly include potassium, barium, caesium, and rubidium.

Rock types produced by small degrees of partial melting in the Earth’s mantle are typically alkaline (Ca, Na), potassic (K) and/or peralkaline (high aluminium to silica ratio). Typically, primitive melts of this composition form lamprophyre, lamproite, kimberlite and sometimes nepheline-bearing mafic rocks such as alkali basalts and essexite gabbros or even carbonatite.
Geochemical implications of partial melting – magma | wikipedia

Geoelectric and magnetotelluric geology

One way to perhaps provide data, evidence for Electric Universe geology theory?

The longer you run the measurements, the crisper the images and the deeper you can ‘see’ the subsurface. We were focusing on the upper 12-15 kilometers of the crust, but with a longer experiment we could see 200 to 300 kilometers below the surface.
New imagery solves mystery of why Mount St. Helens is out of line with other volcanoes |