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
23	221		UPPER PLEISTOCENE		0.0	73.0		NO AGE GIVEN		NO AGE GIVEN	 0.01	  0.7	0.355	DSDP INITIAL REPORTS
23	221		LOWER PLEISTOCENE		73.0	109.0		NO AGE GIVEN		NO AGE GIVEN	  1.2	  1.8	  1.5	DSDP INITIAL REPORTS
23	221		UPPER PLIOCENE		109.0	112.0		NO AGE GIVEN		NO AGE GIVEN	  1.8	  3.4	  2.6	DSDP INITIAL REPORTS
23	221		PLIOCENE	MIOCENE	118.0	154.0		NO AGE GIVEN	NO AGE GIVEN	NO AGE GIVEN	  1.8	 22.5	12.15	DSDP INITIAL REPORTS
23	221		UPPER OLIGOCENE		167.0	217.0		NO AGE GIVEN		NO AGE GIVEN	 22.5	   30	26.25	DSDP INITIAL REPORTS
23	221		MIDDLE OLIGOCENE		217.0	224.0		NO AGE GIVEN		NO AGE GIVEN	   29	   32	 30.5	DSDP INITIAL REPORTS
23	221		UPPER EOCENE		252.0	256.0		NO AGE GIVEN		NO AGE GIVEN	 37.5	   43	40.25	DSDP INITIAL REPORTS
23	221		MIDDLE EOCENE		256.0	261.0		NO AGE GIVEN		NO AGE GIVEN	   43	   49	   46	DSDP INITIAL REPORTS