Anyways, everything that exists in the universe, every object, every particle, every atom, electron, proton, neutron, etc is held together by
electrostatic forces. Without these "electric" forces bonding, and holding atoms, and molecules together, nothing would exist.
It is only logical that any electric current passing through objects will affect them in one way or another.
The changes in physical properties of rocks, formations, and magma of course does not rely entirely in the changes in the telluric current.
It is more a congruence of factors which causes such changes. Pressure,
gravity, thermal changes, electrical currents/telluric currents, etc, all play a role in these changes in the formations and strata of the Earth.
Such congruence, in which telluric currents play a part, has been noted for a long time.
A preliminary result of a new terrain-correction analysis of the existing gravity data is that there is a strong trend in the gravity anomalies
parallel to the alignment of young silicic volcanism, suggesting that there may be subsurface structures and plutonic bodies associated with the
volcanism. Relatively old geomagnetic variation studies also detected parallel telluric current systems at depths shallower than 10 km, consistent
with thermal phenomena (Towle, 1984)
www.dmns.org...
We know as a matter of fact that high frequency electric currents can been used to cut through rocks, low frequency currents also affects rocks,
formations and magma. Remember that magma is a liquid, well a semi-liquid in which electric currents pass through also.
We also know for a matter of fact that when rocks are stressed they generate a positive current, and right before it breaks there is a spike in these
currents. Different rock formations generate higher or lower currents.
Current and surface potential induced by stress-activated positive holes in igneous rocks
Abstract
In order to model seismo-electromagnetic phenomena, we focus on one specific defect as an alternative source of charge carriers in igneous rocks.
These charge carriers are defect electrons in the O2–sublattice that are chemically equivalent to O–in a matrix of O2–and are known as positive
holes (p-holes). They are activated from peroxy defects: O3X–OO–XO3(X = Si, Al etc.) that are known as positive hole pairs (PHPs). Stressed
igneous rocks behave like p-type semiconductors. In order to examine the contributions of p-holes to seismo-electromagnetic phenomena, we conducted
two series of uniaxial loading tests using air-dry tiles of several typesof rocks (granite, anorthosite, gabbro, limestone, and marble) and glass. We
observed that the igneous rock tiles under centrally loading generated (1) a positive current, carried by holes and flowing from the central stressed
volume through the surrounding unstressed volume to the edges of the tiles and (2) a negative current, carried by electrons and flowing from the
central stressed volume into the load pistons.
www.seti.org...
Laboratory studies of electrical potential during rock failure
D. Eccles, , P.R. Sammonds and O.C. Clint
Mineral, Ice & Rock Physics Laboratory, Department of Earth Sciences, University College London, UK
Accepted 3 May 2005. Available online 14 July 2005.
Abstract
We have investigated electrical potential and acoustic emissions signals associated with rock deformation. Five rock types were studied; Clashach,
Bentheim and Darley Dale sandstones (all quartz-rich) and a Seljadur basalt and Portland limestone (both quartz-free), both air dry and the rocks were
tested in distilled water. Shallow crustal conditions were simulated in a triaxial rock deformation cell with a confining pressure simulating depth of
40 MPa, pore pressures ranging 5–35 MPa, and strain rates 10-7–10-4 s-1. Precursory electric potential signals prior to failure were observed in
both saturated and dry samples of the quartz-rich sandstones, but only observed in the water saturated quartz-free rocks. Co-seismic electrical
signals were obtained in all tests, providing strong evidence that two of the main sources for precursory and co-seismic signals are the piezoelectric
and electrokinetic phenomena.
Lowering the strain rate resulted in an increase in the number of acoustic emissions. The pore volume changes during compaction and dilatancy remained
approximately constant for all strain rates.
Streaming potential generated by fluid flow across the sample was also measured at different stages of deformation. The potential signals increased
with the pore pressure gradient.
Sciencedirect.com
[edit on 2-7-2007 by Muaddib]
