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Figure F65. Magnetic field inclination determined by the General Purpose Inclinometry Tool (GPIT) in the Formation MicroScanner (FMS)-sonic tool string, Hole U1376A. Calculation of inclination is influenced by magnetic material in the tool string and the deviation of the hole from vertical. Note that the International Geomagnetic Reference Field (IGRF11) inclination at Site U1376 is –55.7°.

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