| Text Description: |
Characterized by a general lack of bedding, sharp, bounding contacts, and its mixture with lake sediments. The majority of this unit is composed of reworked tephra and lake sediment. Characterized by platy glass shards of both brown and colorless glass. The glass is minorly phenocrystic with cylindrical, conical and equant vesicles. Bubble wall junctions are also present in the glass shards. 2-cm-thick zone of coarse (sand-sized), pure pumice and mafic inerals lies at the base of the unit. |