VSF 2010 Report - Nabo

6.00
5.00
% Charcoal
4.00
3.00
2.00
1.00
0.00
543
541
539
537
535
533
531
529
527
525
523
521
519
517
515
513
511
509
507
505
Sample Number
Figure 2. Graph showing charcoal volume as a percentage of total original sample volume
As is shown in Figure 2, there is substantial variation in the amount of charcoal in the
samples, from more than 5% charcoal in the richest contexts to no charcoal at all in some
layers. There are three contexts which clearly show high charcoal content: [10407], [10409],
and [10411]. Contexts [10409] and [10411] were both described as burnt layers with visibly
high charcoal content during excavation, while [10407] was described as a turf collapse layer
with frequent charcoal flecks (see context descriptions, below). While it is obvious that there
will be more charcoal in apparently ‘burnt’ layers, there is also a trend towards greater
amounts of charcoal in the upper layers of the column, while no charcoal fragments over
1mm were recovered from any layers below [10414], apart from in the bottommost two
contexts.
160