The sixteen fundamental block boundaries correspond approximately to sixteen fundamental volcanic fault blocks known vaguely on the globe. Something similar is known on the moon. The rifts are the boundaries of sixteen blocks, some polyhedral, some elongate. Some are oceanic like New Zealand-Tonga, some are ancient and continental like Arabia. The imperfectly mapped ocean deeps are boundary lines. The rifts of Africa and Chile-Patagonia are boundary lines. The great arcs of Himalaya, Java-Sumatra, and Aleutian ridges are boundary lines of circular blocks. Possibly they were circular calderas of engulfment on the primitive spheroid. The edge of Mare Imbrium on the moon shows fault rifts. The straight alignment of lunar calderas hints at moon rifts under an unmapped mosaic. The blocks of the theory of continental drift, are guesses at a mosaic of crust blocks. But the possibility drift theory omitted is that the blocks are deep. Except for the Lowthian Green, Wegener, Holmes, and Daly speculations, based on thin crust blocks of continents, no mapping of the shell mosaic exists. It is not feasible until we map the detail of ocean bottoms. Primitive blocks require acceptance of a thick crust and justify new speculation. The cracks between blocks are the volcanic partitions of the earth, which I call ignisepts. There are many points for speculation, some of them subject to mathematical inquiry. Does surface water penetrate the partitions? Is it high pressure and saline under oceans? How do deep earthquakes stem from friction 300 miles down under the Cordillera and the west Pacific? Do earth and moon spheres as rounded tetrahedra crack similarly? Because of rotation are north-south cracks dominant? Are the core fluids changing volcanism through the ages?] The twenty-eight percent of earth surface which lies above the sea in continents is made up of siliceous sediments of shallow water basins, with quartz as the dominant mineral, their strata wrinkled, and eroded into mountain ranges. Desert and lake or river bottoms make up most of the remainder. This material, when ancient, was changed by heat and infiltration into what are called gneisses, schists, and granites; and the process of granitization is among the metamorphic processes. It is a process of deep burial, heat, gases, and water which has always been a puzzle, and may affect ancient volcanic lavas wherever they have covered the land. It is a process of solution of silica, and its deposition is by steam and other vapors.