Figure Thumbnails 26-50

F26. Plot of deformation intensity and oxide abundance for Leg 176 core.

F27. Photomicrographs of oxide minerals and sulfides.

F28. Photomicrographs of amphiboles, oxides, and sulfides.

F29. Downhole felsic vein intensity averaged over every 10 m of core.

F30. Core photo of a large igneous felsic vein.

F31. Core photo showing grain-size layering.

F32. Histogram of layer thickness.

F33. Distribution of dominant secondary metamorphic phases in Hole 735B.

F34. Alteration vs. depth in Hole 735B.

F35. Degree of alteration compared with the total abundance of veins per section.

F36. Downhole distribution of secondary phases in Hole 735B.

F37. Visual estimate of olivine alteration in thin sections vs. depth.

F38. Visual estimate of clinopyroxene alteration in thin sections vs. depth.

F39. Visual estimation of plagioclase alteration in thin sections vs. depth.

F40. Coarse-grained highly altered Fe-Ti gabbro.

F41. Slightly altered Fe-Ti gabbronorite.

F42. X-ray diffraction profile of smectite, prehnite and pumpellyite(?).

F43. X-ray diffraction profile of zeolite.

F44. Vein of pale-green smectite with alteration halo.

F45. Highly altered mylonitized and net-veined trondhjemite-gabbro with recrystallized plagioclase.

F46. Photomicrographs of olivine with smectite and oxide; partly altered olivine with talc, Mg-amphibole and oxide; and olivine with clinopyroxene.

F47. Distribution of total veins; felsic, plagioclase, and plagioclase + amphibole veins; plagioclase + diopside and diopside veins; amphibole veins; carbonate and smectite veins; and chlorite and zeolite veins.

F48. Proportion of veins types relative to the total amount of veins.

F49. Extensively altered felsic vein.

F50. Typical zoned felsic vein.