Rock magnetic investigation of possible sources of the Bangui magnetic anomaly 1 2

Abstract 17 The Bangui Magnetic Anomaly (BMA) is the largest lithospheric magnetic field anomaly on 18 Earth at low latitudes. Previous studies investigated its geological source using constraints 19 from satellite and ground magnetic field measurements, as well as from surface magnetic 20 susceptibility measurements on rocks from the Panafrican Mobile Belt Zone (PMBZ). Here 21 we combine magnetic field data modelling and rock magnetic property measurements 22 (susceptibility and natural remanent magnetization, NRM) on many samples from this PMBZ 23 and the surrounding formations. It reveals that NRM is a significant component of the total 24 magnetization (Mt) of the BMA source, which reaches 4.3 A/m with maximum thicknesses of 25 *Revised Manuscript Click here to view linked References ha l-