Additional file 5 of Matuyama–Brunhes geomagnetic reversal record and associated key tephra layers in Boso Peninsula: extraction of primary magnetization of geomagnetic fields from mixed magnetic minerals of depositional, diagenesis, and weathering processes

Additional file 5: Figure S5. Results of least squares fitting of lines and circles, and combined analyses of remagnetization circles using Paleomagnetism.org 2.0 (Koymans et al., 2020). (a) Sample 24 and (b) sample 89 are examples showing reversed and normal polarities, respectively. For each sample, one specimen is fitted with a great circle (top figure), and two specimens give line fitted directions (second and third figures from the top). Left figures are vector endpoint diagrams and right figures are equal-area projections. Red lines or curves on the diagrams are the results of least squares fitting with a line or a circle. Tables in the middle are the summary of linear and great circle fittings and combined analyses). Bottom figures are the results of combined analyses plotted on equal-area projections. Alphabets and numbers on the symbols of the vector endpoint diagrams are demagnetization methods (i.e. A=AFD, T=ThD, L=LTD) and demagnetization levels (for LTD, AFD levels prior to the application of LTD).