A lava flow is interlayered in the basal part. S S3 Stratified pyroclastic fall deposit formed by plane parallel pumice and black scoria lapilli beds and ash layers. S S1 Stratified pyroclastic fall deposit formed by plane parallel pumice and black scoria lapilli beds and ash layers. P Numerous thin lava flows. N Thinnly stratified pyroclastic surge deposit, formed by many ash and sandy laminae separated by erosional surfaces.
Some laminae show coarse lithic clasts normally graded.
K Stratified scoria cone made up by gray to reddish beds of poorly sorted lapilli and block scoria clasts. J Well sorted pumice lapilli fallout deposit intercalated by discontinous ash layers of surge origin. I I1 Stratified fall deposit made up by alternating coarse and medium pumice lapilli layers. This deposit show thin ash layers of probable surge origin in its upper part. F Massive ash flow bed with accretionary lapilli.