| STYX BASIN | ||
|---|---|---|
| State(s) | Queensland | |
| Area (km2) | Offshore | 500 |
| Onshore | 300 | |
| Maximum thickness (m) | 400 | |
| Age Range | Early Cretaceous | |
| Basin | Overlies | Permian sediments of the Strathmuir Synclinorium. |
| Underlies | Neogene alluvium and shelf sediments. | |
| Subdivisions | - | |
| Other | - | |
| Indicators | Knowledge | Regional geophysical and some outcrop data onshore; regional geophysical only offshore. |
| Basin type | Small graben. | |
| System(s) | Capricorn. | |
| Water Depth (m) | 0 - < 100. | |
| Exploration | Status | Frontier |
| Wells | 0 | |
| Seismic line-km | Not determined, but very sparse. | |
| Discoveries | Nil | |
| Shows | Nil | |
| HC evidence | - | |
| Geology | Source(s) | No mature source. |
| Reservoirs | Early Cretaceous sandstones. | |
| Seals | Early Cretaceous shales. | |
| Trap types | No valid traps have been identified. | |
| Palaeogeographic summary | Early Cretaceous (Albian) non-marine (?fluvio-deltaic) coal measures, with one minor marine incursion. | |
| Timing | Oil generation | No evidence of generation. |
| Gas generation | No evidence of generation. | |
| Trap formation | No evidence of valid traps. | |
| Other key times | Basin fill has been highly disturbed by later events. | |
| Other important information | The offshore Styx Basin lies entirely within the Great Barrier Reef Marine Park, in which petroleum exploration activity is prohibited. | |
| Geoscience Australia products available | - | |