| The workings appear to loosely follow the upper contact of a grey, altered rhyolitic tuff with an overlying porphyritic rhyolite unit. |
| Pumiceous peperite is associated with a rhyolitic sill that intruded wet, unconsolidated, submarine stratified pumice breccia in the Cambrian Mount Read Volcanics, Australia. |
| It was characterized by rhyolitic volcanism which appears to have been restricted to the Horn Graben area. |
| Geochemical variation is common in deposits of many rhyolitic eruptions, especially those from large, caldera-forming events in continental settings. |
| Geochemical analyses of these clasts show that the eruption tapped two chemically distinct rhyolitic magmas. |
| The injection of a mafic magma into a more silicic magma chamber is an important trigger mechanism in moderate-sized andesitic, dacitic and rhyolitic eruptions. |
