Figure F73. A. Diagram showing the abundance of mineral filled veins with depth in Hole 1137A. Veins are subdivided by the dominant mineral filling, and the vein abundance is calculated as an equivalent vein thickness in millimeters of vein material per meter of recovered drill core. B. Diagram showing the total fracture distribution, which is calculated from the total number of veins of any thickness per meter of recovered core. Data are presented on a core by core basis. Note that solid diamonds = total vein abundance; crosses = clay; open circles = calcium carbonate; solid triangles = zeolites; solid squares = amorphous silica; open diamonds = total fracture density.