Fig. 2

Spatial distribution of declustered main earthquakes (1787–2018) and the cataloged focal-mechanism solutions in the compiled catalog. (Green: pure normal-faulting (NF); Orange: normal-faulting with strike-slip component (NS); Blue: pure strike-slip faulting (SS); Red: pure reverse-faulting (TF); Rose: reverse-faulting with strike-slip component (TS); and Black: undefined (U)). Focal sphere sizes were plotted relative to their moment magnitudes.