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Details van artikel 7 van 14 gevonden artikelen
| Titel: |
Geophysical interpretation and modelling of the Olary Domain under cover: a hidden inverted rift system |
| Auteur: |
Hills, Q. G. Betts, P. G. Lister, G. S. |
| Verschenen in: |
Australian journal of earth sciences |
| Paginering: | Jaargang 50 (2003) nr. 4 pagina's 633-644 |
| Jaar: |
2003-08 |
| Inhoud: |
Interpretation and 2-D forward modelling of aeromagnetic datasets from the Olary Domain to the north of the outcropping Kalabity Inlier, South Australia, is consistent with a buried structural architecture characterised by isolated anticlines (also referred to as growth anticlines) bounded by steeply dipping reverse faults. The isolated anticlines are interpreted to have formed by half-graben inversion during crustal shortening associated with the ca 1600-1580 Ma Olarian Orogeny. We interpret the bounding reverse faults as reactivated high-angle normal faults, originating from a listric extensional fault architecture. As shortening increased, 'break-back bypass' and 'short-cut' thrusts developed because of buttressing of the hangingwall successions against the footwall. The resulting architecture resembles a combination of a thrust-related imbricate fan and an accumulation of inverted basins. Using this structural architecture, synrift sediments proximal to interpreted normal faults were identified as prospective for sediment-hosted massive sulfide Pb-Zn-Ag mineralisation. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 7 van 14 gevonden artikelen
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