Figure F38. "Multi" halos (photographs of wet rock surfaces). A. A 15 mm wide multihalo with a 10 mm brown zone, a 2 mm yellow transitional zone, and a 3 mm black zone (interval 301-U1301B-15R-4 [Piece 6, 64–73 cm]). B. A 10–20 mm wide multihalo with a 5 mm red-brown, a 5 mm yellow, and 5 mm black zones (interval 301-U1301B-33R-1 [Piece 22, 105–122 cm]). The halo encroaches into the fresher rock interior along the small fractures.
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