Figure F34. Alteration downhole in Hole 1140A vs. depth. Scalloped graphic in lava type column = pillow lavas; gray regions without this symbol = more massive lobes. Color shows the proportion of background gray basalts to brown oxidation halos. Black bars = the presence of glass, sediments, and secondary minerals. Sparry carbonate shows the location of intergrown open-space filled dolomite and calcite. Alteration: sl = slight, m = moderate, h = high, c = complete.