| Autor: |
Vearncombe, J.R., Cheshire, P.E., De Beer, J.H., Killick, A.M., Mallinson, W.S., McCourt, S., Stettler, E.H. |
| Zdroj: |
Tectonophysics; January 1988, Vol. 154 Issue: 3 p285-308, 24p |
| Abstrakt: |
Sporadic epigenetic antimony-gold mineralisation along the ENE-trending Antimony line of the Murchison schist belt is structurally controlled and spatially related to carbonated rock types with quartz-carbonate veins in tension fractures. The Antimony line is a discontinuous zone of brittle-ductile deformation and is locally oblique to lithological layering within a broad ductile shear zone. This tectonically early (D 1) shear zone has an oblique-to dip-slip, reverse (north-side-up) movement sense with downward-facing fold structures in the hangingwall. Later (D 2) fold structures deformed the Antimony line and its wallrocks into steep structures. The Antimony line is intruded by granitoids which post-date D 1and are not directly related to mineralisation, the source of which may have been metamorphic fluids. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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