The Geology of the Lochaber District, Queensland, Australia |
Common terms and phrases
abundant acidic alteration amounts andesitic angular appears basalts basis beds believed breccia brown carbonate Carboniferous cement chert chlorite coarse clastic common composed composition conglomerates contain continuous crystals dark deposition derived detrital developed Devonian dominant east entire essentially evidence extremely faulting feet feldspar Figure folding formed fossils G G G geosyncline glassy graded grained granite graywackes highly important increase indicate laterite limestone lithic clasts Lochaber district Lochaber Sandstone Lower mapped material matrix MODAL mudstone Mundowran Group Mundubbera district Mundubbera Sandstone nature observed occur oolites opaques Paleozoic percent plate points present probably Pumpkin Hut Formation pyroclastic quartz Queensland ranges represent rhyolites rock types rocks rounded secondary sediments sequence sericite silicious slide structure studied surface Table textural thickness thin thrust Tournaisian trachytes Triassic tuffs University upper usually valley variations volcanic volcanic wackes Washpool Creek Formation zone