Figure F3. Classification diagram Di-Hd-En-Fs for pyroxenes (Rock, 1990), showing the chemical variability of clinopyroxenes (cpx) of Site 1201 basalts. Data from Table T2. Di = diopside; Hd = hedenbergite; En = enstatite; Fs = ferrosilite; Wo = wollastonite. Early = phenocryst cores; late = phenocryst rims, microphenocrysts, and microlites. The continuous line field encompasses the compositional range of clinopyroxene of tholeiitic basalts from the west Philippine, Parece-Vela (Mattey et al., 1981; Zakariadze et al., 1981), and Shikoku (Dick et al., 1980) Basins and the Mariana Trough (Bougault et al., 1981; Hawkins and Melchior, 1985); the dotted line field represents the compositional range of clinopyroxenes of alkaline basalts from the Shikoku Basin (Dick et al., 1980).

Figure F3. Classification diagram Di-Hd-En-Fs for pyroxenes (Rock, 1990), showing the chemical variability of clinopyroxenes (cpx) of Site 1201 basalts. Data from Table T2. Di = diopside; Hd = hedenbergite; En = enstatite; Fs = ferrosilite; Wo = wollastonite. Early = phenocryst cores; late = phenocryst rims, microphenocrysts, and microlites. The continuous line field encompasses the compositional range of clinopyroxene of tholeiitic basalts from the west Philippine, Parece-Vela (Mattey et al., 1981; Zakariadze et al., 1981), and Shikoku (Dick et al., 1980) Basins and the Mariana Trough (Bougault et al., 1981; Hawkins and Melchior, 1985); the dotted line field represents the compositional range of clinopyroxenes of alkaline basalts from the Shikoku Basin (Dick et al., 1980).