Laboratory derived constraints on electrical conductivity beneath Slave craton

Details Laboratory derived constraints on electrical conductivity beneath Slave craton Laboratory derived constraints on electrical conductivity beneath Slave craton

Apr 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007pepi..161..126b&link_type=abstract

Physics of the Earth and Planetary Interiors, Volume 161, Issue 1-2, p. 126-133.

Physics

2

Magnetic And Electrical Properties, South America, Geoelectricity, Electromagnetic Induction, And Telluric Currents, Models Of Interior Structure

Scientific paper

The depth profile of the electrical conductivity, σ(d), beneath the Central Slave craton (Canada) has been reconstructed with the help of laboratory measurements carried out on peridotite xenoliths. σ(T) of xenoliths was determined in the piston-cylinder apparatus at 1 and 2 GPa and from 600 to 1150 °C. σ(T) of xenoliths follows the Arrhenius dependence with the activation energy, E, varying from 2.10 to 1.44 eV depending on temperature range and the Mg-number. The calculated xenolith geotherm and the suggested lithology beneath the Central Slave have been used to constrain σ(d) as follows: σ(d) in the crust varies between 0.5×10 and 10 S/m; the lithospheric σ(d) sharply decreases below the Moho at 39.4 km to 0.5×10 S/m, which corresponds to 460 °C, and then gradually increases with the depth d to 0.5×10 S/m. The modeled MT-response of the constrained σ(d) profile has been compared with MT-observations [Jones, A.G., Lezaeta, P., Ferguson, I.J., Chave, A.D., Evans, R.L., Garcia, X., Spratt J., 2003. The electrical structure of the Slave craton. Lithos, 71, 505 527]. The general trend of the calculated MT-response based on the σ(d) model mimics the MT-inversion of the field data from the Central Slave.

Affiliated with

Also associated with

No associations

Rating

Laboratory derived constraints on electrical conductivity beneath Slave craton does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Laboratory derived constraints on electrical conductivity beneath Slave craton, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Laboratory derived constraints on electrical conductivity beneath Slave craton will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1360401