Figure F14. Lithology and age control for DSDP Site 178. Modified from Lagoe et al. (1993). Partial seismic section from Line 13 of 1989 USGS Survey F689 (Fig. F7). IRD = ice-rafted debris, Ja = Jaramillo, Oi = Olduvai. GI A, GI B, GI C = glacial Intervals A, B, and C. MPW = mid-Pliocene warm period. 40Ar/39Ar ages from Hogan et al. (1978). Magnetic polarity stratigraphy from von Huene et al. (1973). Modified from Reece et al., in press.
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