Figure 3. Downhole plot of the characteristic remanence inclination and declination and normalized relative paleointensity of the upper Jaramillo transition from Hole 1020C (Gorda Ridge). Solid dots = the u-channel measurements, open triangles = the results from the discrete samples. The core coordinate system was rotated so that declinations were on average at 0× for normal intervals. Natural remanent magnetization (NRM) and anhysteretic remanent magnetization (ARM) were both AF demagnetized at 20 mT. The age model is based on the ages of the upper Jaramillo (990 ka) and lower Jaramillo (1070 ka) reversals and the assumption of constant sedimentation rate between these two reversals with known depth. The dashed lines represent the values expected for an axial geocentric dipole field.

Figure 3. Downhole plot of the characteristic remanence inclination and declination and normalized relative paleointensity of the upper Jaramillo transition from Hole 1020C (Gorda Ridge). Solid dots = the u-channel measurements, open triangles = the results from the discrete samples. The core coordinate system was rotated so that declinations were on average at 0× for normal intervals. Natural remanent magnetization (NRM) and anhysteretic remanent magnetization (ARM) were both AF demagnetized at 20 mT. The age model is based on the ages of the upper Jaramillo (990 ka) and lower Jaramillo (1070 ka) reversals and the assumption of constant sedimentation rate between these two reversals with known depth. The dashed lines represent the values expected for an axial geocentric dipole field.