Flanking folds and boudins in the Prince Charles Mountains

摘要

This photograph shows deformed boudin structures in Precam-brian basement rocks from Wilson Bluff, 74°18'S, 66°47'E, in the Southern Prince Charles Mountains of East Antarctica. An impressive flanking-fold structure can be seen between the torn mafic boudins; it appears to have originated from ductile flow of the overlying host grey gneiss into a low-pressure sink during the boudinage.