Weathering of a N eogene fluviatile fining-upwards sequence at Voervadsbro, Denmark

By heavy mineral analyses it is shown that a fluviati-le fining-upwards sandy sequence from the Neogene of Denmark has been weathered from its upper surface and deep into the sediment. During the weathering amphiboles, epidotes, garnets, kyanite, staurolite and feld- 1,par have been strongly corroded, whereas zircon, rutile and tourmaline were not affected. Jn the uppermost part of the sequence authigenic anatase and outgrowths on feldspar and quartz occur. The secondary growth of feldspar occurred subsequent to corrosion and the outgrowths are not corroded.