Igneous Rocks																								
					Groundmass Plagioclase			Groundmass Pyroxene			Groundmass Olivine			Groundmass Opaques		Groundmass Glass		Phenocrysts		Veins	Vesicles	Glomerophenocrysts		
Sample Interval		Subunit	Name	Texture	Percentage 	Size 	Alteration	Percentage	Size	Alteration	Percentage	Size	Alteration	Percentage	Size	Percentage	Alteration	Type	Alteration					
					 																			
"1213B-28R-1, 45-48 cm"		IVA	Diabase	Intersertal to	45	0.76 mm max.	to smectite	7	0.11 mm ave.		8	<0.67 mm		10	0.05 mm ave.	30	devitrified	None		Carbonate &	None	Some		
				Intergranular to		0.29 mm ave.	along fractures										alt. to smectite			green clay 				
				Glomeroporphyritic			(minor)										alt. to carbonate			filled				
																								
"1213B-28R-3, 143-145 cm"		IVA	Diabase	Subophytic to 	40	1.6 mm max.		20	0.2 mm ave.		10	0.5 mm ave.	 (some	10	0.19 mm ave.	20	devitrified	None		None	Amygdules or	None		
				Intersertal		0.6 mm ave.							inclusions)				some fine plag-				crystals altered			
																	ioclase microlites				to carbonate			
																								
"1213B-30R-2, 27-30 cm"		IVA	Diabase	Intergranular to	45	1.8 mm max.	to smectite	20	<0.57 mm		5	<0.8 mm	(some	10	0.10 mm ave.	30	slightly devitrified			Brown clay	? Plucked?			
				Intersertal to 		0.5 mm ave.	along fractures		(wide range)			(wide range)	inclusions)				(dark brown)			filled				
				Subophytic			(minor)																	
																								
"1213B-30R-4, 39-41 cm"		IVA	Diabase	Intersertal to 	45	1.6 mm max.	to smectite	27	<0.6 mm	to smectite	3	<0.6 mm	to smectite?	5	0.08 mm ave.	20	Altered to clay	None		None	None	None
			(Basalt?)	Intergranular		0.38 mm ave.	along fractures			(relict							and devitrified					
							(minor)			cleavage?)							(dark brown)					
																						
"1213B-31R-1, 7-10 cm"		IVB	Basalt	Seriate to 	20	1.5 mm max.	to smectite	2	0.38 ave.	to smectite	3	<0.67 mm	(some	5		70	devitrified/altered					
			 	slightly 		0.29 mm ave.	(moderate)			(relict 			inclusions)				Fibrous bundles	Plagioclase		Smectite	>1 mm dark	Some
				Glomeroporphyritic		some swallow tail crystals				cleavage?)							of microlites			filled	patches (?)	
																					Amygdules filled with smectite	
																						
"1213B-31R-3, 73-75 cm"		IVB	Diabase	Subophytic	48	1.5 mm max.	to smectite	2	0.66 mm ave.		30	0.66 mm ave.		10	0.11 mm ave.	5	devitrified/altered			"Carbonate,"	None	large (1.2 mm) composed of 
						0.67 mm ave.	along fractures			to clay +										"smectite, and "		plagioclase crystals 2 mm and
							(minor)			carbonate(?)										quartz filled		less+pyroxene+opaques
																						
"1213B-32R-3, 72-75 cm"		IVB	Diabase	Subophytic to	50	1.4 mm max.	to smectite	10	0.5 mm max.		2	0.5 mm max.		5	0.17 mm ave.	20	devitrified/altered	None		None	None	None
				Intergranular		0.82 mm ave.	along fractures		0.29 mm ave			0.29 mm ave			(some							
						(some spherulites)		15	pyroxene and olivinealtered to smectite 						skeletal)							
																					
"1213B-33R-6, 106-108 cm"		IVC	Diabase	Intergranular	45	0.5 mm max.	to smectite	5	remnants- 		?			5	0.06 mm ave.	5	altered to clay	Plagioclase		Carbonate &	
				(Subophytic? 	(5% large	0.34 mm ave.	along cleavage 								(some		minerals	(6.0-1.0 mm)		smectite	None
				prior to alteration)	phenocrysts)	(some	& fractures	35	pyroxene and olivine(?) altered to smectite						skeletal)			Severley altered		filled	
						spherulites)	(moderate)											to Smectite and Albite(?)