A overview of structures and geometric relationships recognized in thrust belts is offered. The motion of thrust sheets over corrugated surfaces, or the local development of thrust constructions beneath, will fold larger thrust sheets. Sediments accumulated in the brand new Zealand ugg australia winter boots geosyncline to the east of those rocks in the Late Paleozoic and Mesozoic, native low-grade metamorphism, uplift, and erosion proceeding more or less simultaneously with sedimentation. If backarcs were the final setting for UHT metamorphism, then on a hotter Earth the cyclic formation of supercratons (within the Neoarchean Era) and supercontinents (in the Proterozoic Eon) required the destruction of oceans floored by thinner lithosphere that will have generated hotter backarcs than these related to the current destruction of the Pacific Ocean on the modern Earth.