leg	site	hole	age mnemonic	auxiliary age mnemonic	top of section depth(m)	bottom of section depth(m)	special condition	age	auxiliary age	averaged age	age top of section(million years)	age bottom of section(million years)	average age(million years)t	data source
20	195	B	HAUTERIVIAN	VALANGINIAN	357.5	392.0	MISSING HOLE OR DRILLED INTERVAL	NO AGE GIVEN	NO AGE GIVEN	NO AGE GIVEN	  121	  131	  126	DSDP INITIAL REPORTS