Figure F44. A. Thermal demagnetization of Sample 183-1140A-27R-2, 83-85 cm, from basement Unit 1. The intensity decreases mostly at low temperatures up to 200°C. Directions are scattered, and no characteristic inclination could be determined. B. Thermal demagnetization of Sample 183-1140A-34R-5, 10-12 cm, from basement Unit 6. Unblocking temperatures are ~560° and ~350°C and indicate that both titanomagnetite and titanomaghemite are the magnetic minerals. The NRM is a stable single component. J₀ is the magnetization intensity before thermal treatment.