Field photographs and photomicrographs of the Panama City Formation. FarrisDavid W. CardonaAgustin MontesCamilo FosterDavid JaramilloCarlos 2017 <p>A) Field photograph of the intermingling of dacitic and andesitic magmas within a shallow intrusive body. B) Euhedral plagioclase phenocrysts surrounded by microlites from the Ancon Hill dacitic plug.</p>