Figure F9. Correlation of magnetostratigraphy across the Blake Nose Transect. Selected magnetostratigraphic correlation horizons (colored lines) are near the stage boundaries of the Paleogene through Maastrichtian stages. Polarity Zone C22n (the boundary between the lower Eocene and middle Eocene) was used as a horizontal level to indicate relative thicknesses of strata, but this horizon currently becomes progressively deeper by ~1.5 km toward the seaward sites of this transect. (This figure is also available in an oversized format.)