| Walloon Coal Measures | |
|---|---|
| Stratigraphic range: Oxfordian-early Tithonian ~ | |
| Type | Subgroup |
| Unit of | Injune Creek Group |
| Sub-units | Juandah Coal Measures, Maclean Sandstone Member, Tangalooma Sandstone, Taroom Coal Measures, Mutdapilly fossil locality |
| Underlies | Springbok Sandstone |
| Overlies | Hutton Sandstone, Eurombah Formation |
| Thickness | 420–700 m (1,380–2,300 ft) |
| Lithology | |
| Primary | Shale, sandstone, siltstone |
| Other | Coal, limestone |
| Location | |
| Coordinates | 27°00′S 152°36′E / 27.0°S 152.6°E |
| Approximate paleocoordinates | 67°12′S 93°18′E / 67.2°S 93.3°E |
| Region |  Queensland |
| Country |  Australia |
| Extent | Surat & Clarence-Moreton Basins |
| Type section | |
| Named for | Walloon |
| Named by | Dudgeon |
| Year defined | 1982 |
  Walloon Coal Measures (Australia) | |
The Walloon Coal Measures are a Late Jurassic geologic subgroup in Queensland, Australia. Deposited within the Surat Basin, it is considered Oxfordian to early Tithonian in age based on lead-uranium dating of tuffites within the unit.[1]
- ^ Todd, Christopher N.; Roberts, Eric M.; Knutsen, Espen M.; Rozefelds, Andrew C.; Huang, Hui-Qing; Spandler, Carl (December 2019). "Refined age and geological context of two of Australia's most important Jurassic vertebrate taxa (Rhoetosaurus brownei and Siderops kehli), Queensland". Gondwana Research. 76: 19–25. Bibcode:2019GondR..76...19T. doi:10.1016/j.gr.2019.05.008. S2CID 199105458.