Sitt af hverju fra sithastlithnu sumri

Tree moulds found in Tertiary basalt layer in canyon of River Valagilsa, north Iceland, in 1966. Correction of paper on formation of volcano Eldgja, south Iceland in Natturufraedingurinn, Arg.25, Hft.3, 1955, p.148-53. Granite boulders found on beaches in west Iceland, possibly brought there by drift ice. English summary.