F16. Hole 1118A core photograph illustrating the rift onset unconformity and the transition facies from dolerite overlain by conglomerate, limestone, and volcaniclastic sandstone.

F17. Volcanogenic ash layers at Sites 1118, 1109, and 1115 in terms of thickness (gray) and number of layers (black) per core.

F18. Coarse-grained gabbro, Site 1117.

F19. Core photograph of fault gouge.

F20. Sheared gabbro with foliation plane and shear bands, Site 1117.

F21. Lithostratigraphy of Sites 1114, 1116, and 1117 on Moresby Seamount.

F22. Bed and fracture dip directions and strikes from FMS images analysis at Site 1114.

F23. Calcium carbonate vs. depth at Site 1115.

F24. Tuff, with glass shards in glassy matrix.

F25. Depth converted multichannel seismic traces at Sites 1118 and 1109.

F26. Pumiceous rock containing hornblende phenocrysts in glassy groundmass.

F27. Basalt clast with plagioclase and biotite microphenocrysts in calcitic matrix.

F28. Basalt clast with plagioclase microphenocrysts and acidic and serpentinite clasts within a calcareous matrix.

F29. Calc-schist fragment surrounded by basalt and silicic fragments in calcite cement.

F30. Major and trace element data for dolerites and metadolerites, Sites 1109, 1114, 1117 and 1118.