Figure F9. Magnetostratigraphy of the Eocene at Site 1257. Inclinations for Holes 1257B and 1257C are 3-point means from central portions of intact intervals as visually identified in each section. Magnetic inclinations for Hole 1257A are a 21-point moving average of the long-core measurements after AF demagnetization at 15 or 20 mT and after filtering data, as explained in Figure F8, . Yellow dots = Hole 1257A, Red dots = Hole 1257B, Green dots = Hole 1257C. Black/dark gray (if less certain) = positive inclinations (originally considered to be normal polarity zones); white/light gray (if less certain) = negative or mixed inclinations (originally considered to be reversed polarity zones). Cross-hatched = uncertain inclination characteristics or gaps in data coverage. Polarity chron assignments are based on the polarity zone pattern and microfossil biostratigraphy. F = foraminifers, N = nannofossils, R = radiolarians, TD = total depth.

Figure F9. Magnetostratigraphy of the Eocene at Site 1257. Inclinations for Holes 1257B and 1257C are 3-point means from central portions of intact intervals as visually identified in each section. Magnetic inclinations for Hole 1257A are a 21-point moving average of the long-core measurements after AF demagnetization at 15 or 20 mT and after filtering data, as explained in Figure F8. Yellow dots = Hole 1257A, Red dots = Hole 1257B, Green dots = Hole 1257C. Black/dark gray (if less certain) = positive inclinations (originally considered to be normal polarity zones); white/light gray (if less certain) = negative or mixed inclinations (originally considered to be reversed polarity zones). Cross-hatched = uncertain inclination characteristics or gaps in data coverage. Polarity chron assignments are based on the polarity zone pattern and microfossil biostratigraphy. F = foraminifers, N = nannofossils, R = radiolarians, TD = total depth.