Skip to main content
padlock icon - secure page this page is secure

Structure of the Mt Isa region from seismic ambient noise tomography

Buy Article:

$61.00 + tax (Refund Policy)

We use seismic tomography, exploiting group velocities derived from ambient noise, to delineate the crustal structure beneath Mt Isa and the surrounding blocks and basins. The depth extent of the blocks can be traced into the mid-crust and the spatial extent of the associated velocity anomalies mapped over an area of approximately 500 km by 500 km. The Proterozoic Mt Isa block is imaged as a region of elevated seismic velocities comparable to the Yilgarn craton in Western Australia, while the surrounding basins have relatively low velocities. Seismic velocity anomalies display correlations with the regional Bouguer gravity data and with high crustal temperatures in the region. There are a number of isolated low-velocity anomalies under the Millungera basin that suggest either previously unknown thermal anomalies or zones with high permeability, which can also produce lowered velocities.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Article Media
No Metrics

Keywords: Australia; Mt Isa; Proterozoic; ambient seismic noise tomography; lithosphere; seismology

Document Type: Research Article

Affiliations: 1: Research School of Earth Sciences, The Australian National University, Canberra, ACT, 0200, Australia 2: Geological Survey of Queensland, Department of Natural Resources and Mines, Level 10, 119 Charlotte Street, Brisbane, QLD, 4002, 4000, Australia

Publication date: October 1, 2013

  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more