leg site hole core section top interval depth(centimeters) bottom interval depth(centimeters) top of core depth(meters) sample midpoint depth(meters) analyst code piece number lithology shipboard or onshore measurement data source nrm intensity nrm inclination nrm declination stable inclination stable declination quality of orientation mean demagnetizing field initial susceptibility koenigsberger ration comments 66 487 20 1 9.0 11.0 172.00 172.10 NIITSUMA, N. 2 IGNEOUS SHIPBOARD INITIAL REPORTS (IR) 2.87@-3 -28.7 85.7 600 .196@-3 ALT MOD,PLAG-OL MOD PHYRIC BASALT* 3 66 487 20 1 93.0 95.0 172.00 172.94 NIITSUMA, N. 13 IGNEOUS SHIPBOARD INITIAL REPORTS (IR) 4.17@-3 -10.4 288.7 650 324@-6 ALT MOD,PLAG-OL SPARSELY PHYRIC BASALT* 3 66 487 20 1 118.0 120.0 172.00 173.19 NIITSUMA, N. 17 IGNEOUS SHIPBOARD INITIAL REPORTS (IR) 4.35@-3 6.3 52.3 350 .182@-3 PLAG-OL MOD PHYRIC BASALT* 3