AusMT / surveys / Amadeus Basin Long-Period MT Transect 2005 (Adelaide University)

Amadeus Basin Long-Period MT Transect 2005 (Adelaide University) LPMT

Magnetotelluric survey · Northern Territory · Adelaide University

Twenty-nine long-period magnetotelluric soundings on a 236 km transect across the Amadeus Basin, Northern Territory, running north from the Musgrave Province margin into the southern Arunta.

About this survey

Twenty-nine long-period magnetotelluric soundings on a 236 km transect across the Amadeus Basin, Northern Territory, running north from the Musgrave Province margin into the southern Arunta. Selway's 2006 thesis names the line the Amadeus transect and records the fieldwork as July 2005, about three days a station. Nearest neighbour spacing is 4.0 km at the closest, 6.4 km at the median and 18.1 km at the widest, and the northern end stops 8.6 km short of the Redbank Thrust Zone profile, with which the line forms one continuous traverse. Every site recorded Ex, Ey, Hx, Hy and Hz, and every file carries a full impedance tensor, apparent resistivity and phase with errors, and a tipper. Transfer functions span 8 s to 5,461 s on a twenty-eight point ladder, 10 to 18 periods a site. The served files are a 2026 Geotools export of RRRMT estimates with jackknife errors; the export states no acquirer and no elevation.

Data and downloads

Stations (29)

Contributors and organisations

Organisation

Adelaide University

Licence

CC BY 4.0

Instruments

Bartington three component fluxgate magnetometer
unknown copper/copper sulphate porous pot electrodes, dipoles of 20 to 100 m

Processing

RRRMT

Funding

Northern Territory Geological Survey

Publications

Selway, K., Hand, M., Heinson, G. S., and Payne, J. L. (2009). Magnetotelluric constraints on subduction polarity: Reversing reconstruction models for Proterozoic Australia. Geology. 10.1130/G30175A.1

Selway, K. M. (2006). Magnetotelluric experiments in central and southern Australia and their implications for tectonic evolution, chapter 5. PhD thesis, The University of Adelaide, hdl:2440/110300.

Identifiers and provenance

Machine-readable survey record · catalogue schema mtcat 2.0