To celebrate the 70th anniversary of the publication of Acta Geologica Sinica, all the papers carried in the. Acta from 1982 Vol. 56, No. 3 to 1992 Vol. 66 No. 2 were appraised by an appraisal and selection committee organized by the Geological Society of China. The outstanding papers chosen through appraisal, their titles and authors' names are hereby listed as follows: