Figure F3. An example of reconstruction of paleomagnetic north in drilled cores. Open circles are declination data of paleomagnetism in archive halves of Sections 303-U1305A-20H-1A through 20H-6A at 210.16–212.60 meters composite depth (mcd). A solid line shows a regression line of the declination calculated by the least-squares method. Data are rotated gradually downward because of a twist during coring within one core. These declinations of paleomagnetism were generated by subtracting 180° from the original declination of paleomagnetism calculated by the least-squares method for the north correction.
Previous | Close | Next | Top of page