Figure 1
From: Quantifying uncertainties in the measurement of tephra fall thickness
Map of part of São Miguel Island, Azores (geographic location shown in inset by black star), with the original isopachs of Walker and Croasdale (1971). The eruptive source of the Fogo A deposit is shown by the black triangle. Two localities were studied in detail. At Loc 2 (red circle; 629817 E 4176612 N) the Fogo A deposit was measured at a number of outcrops within an area of ~ 200 m2. At Loc 5 (red diamond; 632141 E 4175785 N), measurements of the deposit were taken over a scale of cm to tens of metres.