Figure F15. Summary of drill sites on the Kerguelen Plateau and Broken Ridge that recovered volcanic rocks. Data are shown for Sites 738, 747, 748, 749, 750, 1136, 1137, 1138, 1139, 1140, 1141, and 1142. Multichannel seismic reflection profiles indicate that the volcanic rocks at all sites except Site 748 were recovered from the uppermost igneous basement of the plateau, which lies beneath younger sedimentary cover. Basalt at Site 748 was recovered ~200 m above the seismically defined basement and overlies a poorly recovered zone that contains smectitic clay and highly altered basalt. Radiometric ages for basalts are shown in italics. Biostratigraphic ages of sediments overlying basement are also indicated.