Table T3. Summary of lithologic, bulk chemistry, and mineral chemistry data from fresh lavas, Leg 193.
Site
Lithology
Bulk SiO2
(wt%)
Chemistry
Ti/Zr
Mineral textures
Mineral chemistry
(plagioclase [An])
Clinopyroxene
Orthopyroxene
Temperature
(C)
1188 Vesicular, plagioclase-pyroxene phyric rhyodacite 69.9 27 Euhedral 37–44 Wo 37.9–42.7 Wo 3.5–3.6 950
1189 Vesicular, aphyric to sparsely plagioclase phyric dacite 67.2 43 Rounded and embayed 49–52


1190 Vesicular, plagioclase-pyroxene phyric rhyodacite 70.2 26 Rounded 43–47 Wo 40.0–42.7 Wo 3.3–3.5 960
1191 Vesicular, aphyric to sparsely plagioclase-pyroxene phyric rhyodacite 69.6 33 Subrounded to euhedral 37–44 Wo 35.9–42.7 Wo 3.1–4.2 1015






Fs 18.3–21.6 Fs 32.0–35.6

Note: Bulk SiO2 values are anhydrous. Temperatures calculated from QUILF95 (www.geosciences.stonybrook.edu/people/faculty/lindsley/lindsley.html). See also Andersen et al. (1993).