Fig. 8From: Jackson Pollock’s Number 1A, 1948: a non-invasive study using macro-x-ray fluorescence mapping (MA-XRF) and multivariate curve resolution-alternating least squares (MCR-ALS) analysisComparison of the painting’s image and brick red map for areas in: a: section (1), b section (3) and c section (4), revealing the partially hidden handprints, dragged hands and palms pressed against the canvasBack to article page