Table T6. Summary table of thin section descriptions for the Unit II volcaniclastic rocks.

Subunit	No.	Rock types	Lithic clasts	Vitric clasts	Discrete crystal fragments	Matrix	Cement
IIA	2	Tuff	Basalt; vesicular and nonvesicular; aphyric > phyric	Blocky, nonvesicular glass shards, altered to smectite	Clinopyroxene > plagioclase; Ti magnetite > sulfide	Fine ash altered to zeolite and smectite with minor calcite	None
			5%-55%	30%-70%	1%	15%-25%	0%
IIB	7	Tuff and lapilli tuff	Basalt; fine-grained; vesicular > nonvesicular; aphyric > phyric	Blocky, vesicular and nonvesicular glass shards, altered to smectite	Clinopyroxene, plagioclase,Ti magnetite, sulfide	Fine ash altered to smectite and zeolite with minor calcite	Zeolite
			25%-70%	25%-50%	1%-5%	15%-20%	0%-10%
IIC	1	Lapillistone	None	Tachylite, nonvesicular > vesicular; sparsely phyric > aphyric; trachytic texture	Rare clinopyroxene	None	Zeolite and smectite
				95%	<<1%	0%	5%
IID	3	Tuff	Basalt, mostly nonvesicular, sparsely phyric to aphyric; fine-grained tuff; diabase	Blocky glass shards, mostly nonvesicular, altered to smectite; some tachylite	Clinopyroxene, plagioclase,Ti magnetite, sulfide	Fine ash altered to smectite	Zeolite
			10%-45%	35%-45%	1%-2%	15%-20%	5%-15%
IIE	6	Tuff	Basalt, nonvesicular and vesicular, aphyric > phyric	Blocky glass shards, mostly nonvesicular, most altered to smectite but some with unaltered interiors	Plagioclase > clinopyroxene, Ti magnetite > sulfide	Fine ash altered to smectite and zeolite	Zeolite
			25%-50%	25%-35%	<1%	20%-40%	0%-5%