Data report: Metamorphic veins from Site 894

摘要: Keyword (en) hydrothermal alteration amphibole clay minerals low temperature cores chlorite oceanic crust grade epidote veins drilling fractures gabbros high temperature secondary minerals Ocean Drilling Program preferred orientation paragenesis sheet silicates prehnite country rocks smectite aqueous solutions spinel zeolite group East Pacific Rise mid-ocean ridges Equatorial Pacific igneous rocks Pacific Ocean