Magnetotelluric soundings across the South Island of New Zealand: Electrical structure associated with the orogen of the Southern Alps

Geophysical Journal International

Volumn 124, Issue 1, 1996, Pages 134-148

  Ingham, Malcolm ^a  

^a VICTORIA UNIVERSITY OF WELLINGTON   (New Zealand)

Author keywords

Electrical conductivity; Magnetotellurics; Southern Alps

Indexed keywords

ELECTRICAL CONDUCTIVITY; FAULT ZONE; MAGNETOTELLURIC SOUNDING; OROGENY; RESISTIVITY;

NEW ZEALAND, SOUTH ISLAND, SOUTHERN ALPS;

EID: 0029730193     PISSN: 0956540X     EISSN: None     Source Type: Journal    
DOI: 10.1111/j.1365-246X.1996.tb06358.x     Document Type: Article

References (43)

1. Allis, R.G., 1986. Mode of crustal shortening adjacent to the Alpine Fault, New Zealand, Tectonics, 5, 15-32.
2. Allis, R.G., Henley, R.W. & Carman, A.J., 1979. The thermal regime beneath the Southern Alps, in The Origin of the Southern Alps pp. 79-85, eds Walcott, R.I. & Creswell, M.M., Royal Society of New Zealand Bulletin 18.
3. Anderson, H., Webb, T. & Jackson, J., 1993. Focal mechanism of large earthquakes in the South Island of New Zealand: implications for the accommodation of Pacific-Australia plate motion, Geophys. J. Int., 115, 1032-1054.
4. Bahr, K., 1991. Geological noise in magnetotelluric data: a classification of distortion types, Phys. Earth planet. Inter., 66, 24-38.
5. Barnes, I., Downes, C.J. & Hulston, J.R., 1978. Warm springs, South Island, New Zealand and their potential to yield laumontite, Am. J. Sci., 278, 1412-1427.
6. Brown, C., 1994. Tectonic interpretation of regional conductivity anomalies, Surv. Geophys., 15, 123-157.
7. Chamalaun, F.H. & McKnight, J.D., 1993. A New Zealand wide magnetometer array study, J. Geomagn. Geoelect., 45, 741-759.
8. Chen, J., Dosso, H.W. & Ingham, M.R., 1993. EM induction in the New Zealand South Island, Phys. Earth planet. Inter., 80, 253-260.
9. Ferguson, I.J., Lilley, F.E.M. & Filloux, J.H., 1990. Geomagnetic induction in the Tasman Sea and electrical conductivity structure beneath the Tasman Seafloor, Geophys. J. Int., 102, 299-312.
10. Groom, R.W. & Bahr, K., 1992. Corrections for near surface effects: decomposition of the magnetotelluric impedance tensor and scaling corrections for regional resistivities: a tutorial, Surv. Geophys., 13, 341-379.
11. Groom, R.W. & Bailey, R.C., 1989. Decomposition of magnetotelluric impedance tensor in the presence of local three-dimensional galvanic distortion, J. Geophys. Res., 94, 1913-1925.
12. Groom, R.W. & Bailey, R.C., 1991. Analytic investigations of the effects of near-surface three-dimensional galvanic scatterers on MT tensor decompositions, Geophysics, 56, 496-518.
13. Haak, V. & Hutton, R., 1986. Electrical resistivity in continental lower crust, pp. 35-49, Special Publication of the Geological Society of London No. 24.
14. Hatherton, T., 1980. Shallow seismicity in New Zealand 1956-75, J. R. Soc. N.Z., 10, 19-25.
15. Hjelt, S.E., 1988. Regional EM studies in the 80s, Surv. Geophys., 9, 349-387.
16. Hyndman, R.D., Vanyan, L.L., Marquis, G. & Law, L.K., 1993. The origin of electrically conductive lower continental crust: saline water or graphite? Phys. Earth planet. Inter., 81, 325-344.
17. Ingham, M., 1991. Numerical modelling of magnetotelluric soundings from the Central Volcanic Region, in Proc. 13th New Zealand Geothermal Workshop, Aukland, New Zealand, pp. 15-19. Geothermal Institute, University of Aukland.
18. Ingham, M., 1995. Magnetotelluric sounding across the Southern Alps orogen, South Island of New Zealand: data presentation and preliminary interpretation, Phys. Earth planet. Inter., in press.
19. Jiracek, G.R., Kinn, C.L. & Scott, C.L., 1994. Magnetotelluric tracing of crustal isotherms under a continental volcanic system: possible implications of dihedral angle wetting (abstract), in Proceedings of the 12th Workshop on Electromagnetic Induction in the Earth, University of Western Brittany, Brest.
20. Jones, A.G., 1992. Electrical conductivity in the lower continental crust, in Continental Lower Crust, pp. 81-143, eds Fountain, D.M., Arculus, R.J. & Kay, R.W., Elsevier, Amsterdam.
21. Jones, A.G. & Dumas, I., 1993. Electromagnetic images of a volcanic zone, Phys. Earth planet. Inter., 81, 289-314.
22. Jones, A.G., Groom, R.W. & Kurtz, R.B., 1993. Decomposition and modelling of the BC87 dataset, J. Geomagn. Geoelect., 45, 1127-1150.
23. Kellett, R.L., Ferguson, I.J. & Lilley, F.E.M., 1988. Magnetic field fluctuations at the Eyrewell Observatory, Christchurch, New Zealand, N.Z. J. Geol. Geophys., 31, 87-93.
24. Koons, P.O., 1987. Some thermal and mechanical consequences of rapid uplift: an example from the Southern Alps, New Zealand, Earth planet. Sci. Lett., 86, 307-319.
25. Koons, P.O., 1990. Two-sided orogen: collision and erosion from the sandbox to the Southern Alps, New Zealand, Geology, 18, 679-682.
26. Lilley, F.E.M., Filloux, J.H., Mulhearn, P.J. & Ferguson, I.J., 1993. Magnetic signals from an ocean eddy, J. Geomagn. Geoelect., 45, 403-422.
27. Norris, R.J., Koons, P.O. & Cooper, A.F., 1990. The obliquely-convergent plate boundary in the South Island of New Zealand: implications for ancient collision zones, J. struct. Geol., 12, 715-725.
28. Ranganayaki, R.P., 1984. The interpretive analysis of magnetotelluric data, Geophysics, 49, 1730-1748.
29. Reilly, W.I. & Whiteford, C.M., 1979. Gravity map of New Zealand, 1:1,000,000, Bouger and isostatic anomalies, South Island. Department of Scientific and Industrial Research, New Zealand.
30. Reyners, M., 1987. Subcrustal earthquakes in the central South Island, New Zealand and the root of the Southern Alps, Geology, 15, 1168-1171.
31. Reyners, M., 1989. New Zealand seismicity 1964-87: an interpretation, N.Z. J. Geol. Geophys., 32, 307-315.
32. Reyners, M. & Cowan, H., 1993. The transition from subduction to continental collision: crustal structure in the North Canterbury region, New Zealand, Geophys. J. Int., 115, 1124-1136.
33. Shankland, T.J. & Ander, M.E., 1983. Electrical conductivity, temperatures and fluids in the lower crust, J. geophys. Res., 88, 9475-9484.
34. Smith, E.G.C., Stern, T. & O'Brien, B., 1995. A seismic velocity profile across the central South Island from explosion data, N.Z. J. Geol. Geophys., in press.
35. Smith, J.T. & Booker, J.R., 1991. Rapid inversion of two- and three-dimensional magnetotelluric data, J. geophys. Res., 96, 1168-1171.
36. Stanley, W.D., Mooney, W.D. & Fuis, G.S., 1990. Deep crustal structure of the Cascade Range and surrounding regions from seismic refraction and magnetotelluric data, J. geophys. Res., 95, 9419-9438.
37. Vasseur, G. & Weidelt, P., 1977. Bimodal electromagnetic induction in non-uniform thin sheets with an application to the northern Pyrenees induction anomaly, Geophys. J. R. astr. Soc., 51, 669-690.
38. Wannamaker, P.E., Booker, J.R., Filloux, J.H., Jones, A.G., Jiracek, G.R., Chave, A.D., Tarits, P., Waff, H.S., Egbert, G.D., Young, C.T., Stodt, J.A., Martinez, M., Law, L.K., Yukutake, T., Segawa, J.S., White, A. & Green, A.W., 1989a. Magnetotelluric observations across the Juan de Fuca subduction system in the EMSLAB project, J. geophys. Res., 94, 14 111-14 125.
39. Wannamaker, P.E., Booker, J.R., Jones, A.G., Chave, A.D., Filloux, J.H., Waff, H.S. & Law, L.K., 1989b. Resistivity cross section through the Juan de Fuca subduction system and its tectonic implications, J. geophys. Res., 94, 14 127-14 144.
40. Warren, G., 1967. Geological Map of New Zealand, 1:250000, Sheet 17 - Hokitika. Department of Scientific and Industrial Research, New Zealand.
41. Wellman, H.W., 1979. An uplift map for the South Island of New Zealand, and a model for the uplift of the Southern Alps, in The Origin of the Southern Alps, pp. 13-20, eds Walcott, R.I. & Creswell, M.M., Royal Society of New Zealand Bulletin 18.
42. Woodward, D.J., 1979. The crustal structure of the Southern Alps, New Zealand, as determined by gravity, in The Origin of the Southern Alps, pp. 95-98, eds Walcott, R.I. & Creswell, M.M., Royal Society of New Zealand Bulletin 18.
43. Woodward, D.J., 1987. Seismic surveys for groundwater in Canterbury, New Zealand, 1985-86: a case study. Report 217, Geophysics Division, DSIR.