how are hummocky moraines formed
Note the moraines around the margins, and the folds formed by compression as the debris-rich ice enters the flat lowland. The folds are clear evidence that plastic deformation is a strong component of glacial flow. Date taken Feb.11, 2000.hen the final ice melted, these deposits became positive features; channels became ridges and depressions became hills. Hummocky moraine, formed over a large region of stagnant ice (fig. 14) may contain a mixture of irregular and interstratified till and meltwater deposits.