Complex sentence: High level andesite and rhyolite dykes and intrusive bodies crosscut volcanic flows and tuffs at all levels dyke swarms are emplaced along ring fractures and fault zones at the southwest edge of the caldera.
Split into simpler sentences: High level andesite and rhyolite dikes and intrusive bodies crosscut volcanic flows and tuffs at all levels. Dike swarms are emplaced along ring fractures and fault zones at the southwest edge of the caldera.