FTP, name this rock found in South America's Paran Basin and India's Deccan Plateau that comprises most of the Earth's oceanic crust.
This rock usually has a porphyritic structure, with large crystals of olivine, augite, or feldspar embedded in a fine crystalline groundmass.  Its name, one of the oldest of any rock names, comes from an Ethiopian word referring to a rock rich in iron and magnesium. FTP, name this rock found in South America's Paran Basin and India's Deccan Plateau that comprises most of the Earth's oceanic crust.
This rock usually has a porphyritic structure, with large crystals of olivine, augite, or feldspar embedded in a fine crystalline groundmass.  
basalt