Figure F3. Depth of penetration of drill holes into in situ basement subdivided by ocean basin. Black lines = DSDP drill holes, blue lines = ODP drill holes, red lines = Holes 1256C and 1256D.

Figure F3. Depth of penetration of drill holes into in situ basement subdivided by ocean basin. Black lines = DSDP drill holes, blue lines = ODP drill holes, red lines = Holes 1256C and 1256D.