Peeling angels

My favorite at Kensal Green was a large marble angel. Above is a photo of her. Marble doesn't stand up to the English weather well and so the stone has begun to peel off in places. Its also got polluted by the near by gas works and in some places has turned black. The second picture is a sketch of part of her where the marble is polluted and peeling.

This sample is made by flour paste resist on cotton. First of all I dyed part of it with a quick dip of indigo. Then I painted iron and tannin natural dyes on to the flour paste to make the crackle effect. The very dark areas are silk carrier rods dyed with tannin and iron.