LITHOPROBE Trans-Hudson Orogen Transect
Electromagnetic Activities

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Click here for a larger geology map of the region (with legend) (26 Kb).
Click here for a shaded relief aeromagnetic map of the region (127 Kb !).

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Final model fitting data from sites across the western part of the orogen together with seismic data and major seismic interfaces. Note spatial correlation of shallower zone of low resistivity with La Ronge belt (LRB), and second zone lying beneath a resistive zone, interpreted as Wathaman batholith (WB), which is truncated on its western boundary by the Needle Falls shear zone (NFSZ). Both zones lie structurally on top of Guncoat thrust (GCT), a presumed late compressional feature.
[from Jones et al., 1993.]

Transect EM leaders.....

• Dr. Alan G. Jones, Geological Survey of Canada
• Prof. Ian Ferguson, University of Manitoba

Collaborators.....

• Dr. Jon Katsube, Geological Survey of Canada
• Pamela Schwann, Saskatchewan Energy and Mines
• Dr. Juanjo Ledo, University of Barcelona
• Dr. Xavier Garcia, University of Barcelona
• Dr. Alan D. Chave, Woods Hole Oceanographic Institute

Information.....

Activities.....

Published Papers.....

• Jones, A.G., Craven, J.A., McNeice, G.A., Ferguson, I.J., Boyce, T., Farquarson, C. and Ellis, R.G.1993.
  The North American Central Plains conductivity anomaly within the Trans-Hudson orogen in northern Saskatchewan.
  Geology, 21, 1027-1030.
• Katsube, T.J., A.G. Jones, N. Scromeda and P. Schwann, 1996.
  Electrical characteristics of rock samples from the La Ronge Domain of the Trans-Hudson Orogen, northern Saskatchewan
  Geol. Surv. Canada Current Research, 1996-E, 159-169.
• Garcia, X., A.D. Chave and A.G. Jones, 1997
  Robust processing of magnetotelluric data from the auroral zone
  Journal of Geomagnetism and Geoelectricity, 49, 1451-1468.
• Alan G. Jones, T.J. Katsube, and Pamela Schwann, 1997
  The longest conductivity anomaly in the world explained: sulphides in fold hinges causing very high electrical anisotropy
  Journal of Geomagnetism and Geoelectricity, 49, 1619-1629.
• White, D.J., A.G. Jones, S.B. Lucas and Z. Hajnal, 1999
  Tectonic evolution of the Superior Boundary Zone from coincident seismic reflection and magnetotelluric profiles
  Tectonics, 18, 430-451.
  • PDF full text version (1.1 Mb)
• Ferguson, I.J., A.G. Jones, Y. Sheng, X. Wu and I. Shiozaki, 1999
  Geoelectric response and crustal electrical-conductivity structure of the Flin Flon Belt, Trans-Hudson Orogen, Canada
  Can. J. Earth Sci., 36, 1917-1938.
  • PDF full text version (1.1 Mb)

THOT transect reports on EM activities.....

• 1993 THOT Transect Report
  Jones, A.G, J.A. Craven, G.W. McNeice, I.J. Ferguson, T. Boyce, C. Farquharson & R.G. Ellis, 1993.
  The North American Plains conductivity anomaly within the Trans-Hudson orogen in Saskatchewan.
  Lithoprobe Publication No. 34, pp. 40-55.
  (For a copy of the Publication, contact the Lithoprobe Secretariate)
• 1995 THOT Transect Report
  Ferguson, I.J. & A.G. Jones, 1995.
  1994 electromagnetic measurements ob the Trans-Hudson Orogen transect.
  Lithoprobe Publication No. 48, pp. 162-169.
  (For a copy of the Publication, contact the Lithoprobe Secretariate)
• 1996 THOT Transect Report
  Ferguson, I.J., Stevens, K.M., Cassells, J.P., X. Wu, I. Shiozaki & A.G. Jones, 1996.
  THOT MT studies: eastern segment.
  Lithoprobe Publication No. 55, pp. 10-25.
  (For a copy of the Publication, contact the Lithoprobe Secretariate)
• 1997 THOT Transect Reports (For a copy of any publication, contact the Lithoprobe Secretariate)
  • Grant, N., 1997.
    Processing, interpretation and databasing of magnetotelluric data from the Trans-Hudson orogen: Rapid 2D inversion of the THOT92 regional datasets.
    Lithoprobe Publication No. 62, pp. 16-61.
  • Grant, N., 1997.
    Processing, interpretation and databasing of magnetotelluric data from the Trans-Hudson orogen: Site by site and multi-site, multi-frequency Groom-Bailey decompositions.
    Lithoprobe Publication No. 62, pp. 62-105.
  • Jones, A.G. X. Garcia, N.J. Grant, J. Ledo and I.J. Ferguson, 1997.
    Regional electrical structure of the Trans-Hudson Orogen.
    Lithoprobe Publication No. 62, pp. 130-146.
    
  • Ferguson, I.J., Yu Sheng, X. Wu, I. Shiozaki and A.G. Jones, 1997.
    Electrical conductivity soundings in the central Flin Flon Belt, Trans�Hudson Orogen, Canada.
    Lithoprobe Publication No. 62, pp. 147-167.
    
  • Stevens, K. and I.J. Ferguson, 1997.
    1-D interpretation of high-frequency magnetotelluric data across the Glennie domain of the Trans-Hudson orogen transect.
    Lithoprobe Publication No. 62, pp. 197-205.
    
  • Cassels, J., I.J. Ferguson and A.G. Jones, 1997.
    Interpretation of magnetotelluric data from the Superior Boundary Zone.
    Lithoprobe Publication No. 62, pp. 251-268.
    

Alan G Jones / 29 July 1997 / [email protected]