This paper is an initiative study of a form of corrosion of archaeological glass that until now has been recorded, but not studied. Seven samples of glass, that exhibit this type of corrosion, have been examined in the scanning electron microscope (S.E.M.) and analyzed by E.D.X.A. and three samples of the soil that they were found have been tested by X-ray diffraction (X.R.D.). The present study contains the description of ''ploughing'', the results of some characteristic analyses of the samples and the preliminary conclusions.