leg site hole core section top interval depth (cm) bottom interval depth (cm) top of core depth (m) sample midpoint depth (m) coring device analyst location source repeat column magnetic intensity exponent alternating field demagnetization magnetic intensity J(H)/Jo declination inclination comments 4 28 2 2 0.0 10.0 68.00 69.60 CONVENTIONAL ROTARY DRILLING CORER Opdyke, N. D. ONSHORE INITIAL REPORTS OF THE DEEP SEA DRILLING PROJECT 0 5 NRM 1.571 176.9 -0.9 4 28 2 2 0.0 10.0 68.00 69.60 CONVENTIONAL ROTARY DRILLING CORER Opdyke, N. D. ONSHORE INITIAL REPORTS OF THE DEEP SEA DRILLING PROJECT 0 5 500 1.020 171.9 -19.5 4 28 2 2 0.0 10.0 68.00 69.60 CONVENTIONAL ROTARY DRILLING CORER Opdyke, N. D. ONSHORE INITIAL REPORTS OF THE DEEP SEA DRILLING PROJECT 0 6 1000 6.976 164.7 -26.8 4 28 2 2 0.0 10.0 68.00 69.60 CONVENTIONAL ROTARY DRILLING CORER Opdyke, N. D. ONSHORE INITIAL REPORTS OF THE DEEP SEA DRILLING PROJECT 0 6 1500 4.128 170.7 -25.3 4 28 2 2 0.0 10.0 68.00 69.60 CONVENTIONAL ROTARY DRILLING CORER Opdyke, N. D. ONSHORE INITIAL REPORTS OF THE DEEP SEA DRILLING PROJECT 0 6 2000 3.709 164.6 2.3