Fig. 3: Quantum diamond microscopy map overlay on top of Fe and Mn element map.
From: Centennial to millennial-scale paleoenvironmental record from a coastal iron-manganese concretion
QDM magnetic field mapping overlay on top of the Fe and Mn element map from ref. 18. The QDM field map of a saturation isothermal remanent magnetization shows magnetic sources along the Fe-Mn interfaces and scattered within the Mn-rich growth zones.
