! Paleomagnetic laboratory-Geosciences Rennes-Measurements by P. Roperch ! Equipments 2G magnetometer-Molspin spinner-Agico JR6 ! 2G one measurement between two zeros : code C1 ! 2G four measurements between two zeros : code C4 ! Molspin spinner 6 positions : code Mo ! Jr6a spinner automated mode : code Ja ! Jr6/Jr5 spinner 2 positions : code J2 ! First measurement (or NRM) code N0, F0 or D0 in most cases ! MMTD Furnace for thermal demagnetization ! codes D+ and D-indicate that sample orientation changed in the furnace between ! two steps along +Z and-Z ! AF 2G Online three axis F+ = sequence coils X,Z,Y, F-= sequence coils Y,Z,X ! FX = after demagnetization along X; ! FY = along Y, FZ = along Z; combine FX,FY and FZ to remove GRM