Figures F1-F31
Tables
T1-T4
F1. Moderately plagioclase-olivine phyric basalt (Type 1).
F2. Aphyric to sparsely plagioclase ± olivine phyric basalt (Type 2).
F3. Fine-grained aphyric basalt (Type 3).
F4. Spinel microphenocryst containing melt inclusions.
F5. Miarolitic cavity in a moderately plagioclase-olivine phyric Type 1 basalt.
F6. Subophitic to intergranular groundmass texture typical of fine-grained aphyric basalt.
F7. Alteration of plagioclase to sericite? along microcracks.
F8. A sequence of chilled margin textures typical of moderately plagioclase-olivine phyric basalt.
F9. A basaltic breccia typical of Hole 1161A.
F10. Photomicrograph of basaltic breccia matrix.
F11. Photomicrograph of basaltic breccia matrix.
F12. Photomicrograph of basalt breccia matrix.
F13. Microcrystalline aphyric basalt (Type 4).
F14. Plagioclase-olivine phyric basalt (Type 1).
F15. Basalt breccia with a range of alteration characteristics in the basalt clasts.
F16. Basalt breccia in which the proportions of clast types vary.
F17. Basalt breccia showing palagonitized chilled margin in basalt clast.
F18. Photomicrograph of a basalt chilled margin clast, totally replaced by clay.
F19. Palagonite + glass-rich breccia.
F20. Basaltic breccia.
F21. Basaltic breccias with thin silica and clay layers surrounding basaltic clasts, and Mn oxide lining voids.
F22. Highly altered glassy clast in breccia.
F23. Radial clay aggregates replacing spherulites.
F24. Clast of yellow palagonite partially replaced by light brown clay.
F25. Fractures lined with bluish cryptocrystalline silica within chilled margin of pillow fragment.
F26. Basaltic clast with an alteration halo around outer edges.
F27. Replacement of shiny black glass by bluish clay and silica.
F28. Composite secondary pyrite, chalcopyrite, magnetite, and hematite.
F29. Major element compositions vs. MgO for Hole 1161A basalts.
F30. Trace element compositions vs. MgO for Hole 1161A basalts.
F31. Variations of Zr/Ba vs. Ba and Na2O/TiO2 vs. MgO for Hole 1161A basaltic glass and whole-rock samples.
T1. Coring summary, Site 1161.
T2. Basalt clast types.
T3. Rock samples for cultures, DNA analysis, SEM/TEM, and contamination studies.
T4. Compositions of basalts, Site 1161.
