Figure F89. A. Thermal demagnetization of Sample 183-1139A-64R-2, 41-43 cm, from basement Unit 7. The NRM is a two-component magnetization. The low-temperature component is strongly scattered, and the high-temperature component has a stable direction toward the origin. B. Thermal demagnetization of Sample 183-1139A-65R-3, 22-24 cm, from Unit 10. The NRM is a two-component magnetization with only small scattering in both component directions. C. Thermal demagnetization of Sample 183-1139A-71R-3, 98-100 cm, from Unit 18. The NRM has only a high-temperature single component. J₀ is the magnetization intensity before thermal treatment.