10. FROM OXIDIZING TO REDUCING ALTERATION: MINERALOGICAL VARIATIONS IN PILLOW BASALTS FROM THE EAST FLANK, JUAN DE FUCA RIDGE

ABSTRACT

INTRODUCTION

METHODS

PRIMARY PETROGRAPHIC AND MINERALOGIC FEATURES OF PILLOW BASALTS

ALTERATION INTENSITY

SECONDARY MINERALS

ALTERATION STYLE

Alteration of Glassy Rims

Massive Alteration Along and Around Fractures in Hypocrystalline and Holocrystalline Pillows Interiors

Pervasive Alteration Through Diffusion

FROM OXIDIZING TO REDUCING ALTERATION

SUMMARY AND CONCLUSIONS

ACKNOWLEDGMENTS

REFERENCES

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