| The volcanic strata consist of sheet-like flows of andesite, dacite, basalts, and trachybasalts that are interbedded with agglomerates and tuffs. |
| The presence of locally interbedded airfall tuffs implies subaerial eruption. |
| These units are conformably overlain by fluvial and lacustrine volcaniclastic deposits, tuffs and hyaloclastites. |
