leg	site	hole	core	section	top interval depth (cm)	bottom interval depth (cm)	top of layer (m)	bottom of layer(m)	thickness of layer(m)	lithology	source	heterogeneity	hardness	comp1	comp2	comp3	comp4	comp5	processing history flag	lithology name from screen program	lithology name from shipboard observer	avg. calcareous material	avg. siliceous material	avg. detrital material	age mnemonic at top of layer	age mnemonic at bottom of layer	age code(interpreted)	avg density from g.r.a.p.e.	avg porosity from g.r.a.p.e.	number of g.r.a.p.e. measurements
8	68	A	1	CC	0.0	150.0	0.10	1.60	1.50	SILICEOUS	PELAGIC	MONOGENIC	HARD	unk - 0000					Precoded data	 CHERT                                                      	CHERT                                                       	35	50	45