
Figure F10. Core recovery plot for Hole 1253A from 370 to 600 mbsf (line), superimposed on summary of petrologic observations. Diagram shows multiple distinct intervals within Subunit 4A, the gabbro sill, and Subunit 4B. Different shaded areas indicate the following observations. 1 = location of the cryptocrystalline basaltic texture, 2 = higher number of magmatic contacts, 3 = more veins or voids filled with holocrystalline and cryptocrystalline groundmass/altered glass, clay, and zeolites, 4 = up to 5% degree of alteration within 1 m of Section 205-1253A-37R-1 and higher abundance of voids filled with clays and zeolites ending in a homogeneous microcrystalline gabbro, 5 = increasing number of centimeter-scale fractures and veins, 6 = very homogeneous microcrystalline to fine-grained gabbro with very weak magmatic contacts. Also indicated are the positions of the two OsmoSamplers (OS).
