drift sheet meaning in Hindi

Examples

1. These drift sheets are of late Pleistocene origin.
2. For this reason, it is necessary to consider in some detail the nature and distribution of these two drift sheets.
3. The southernmost drift sheets, as in southern Iowa and northern Missouri, have lost their initially plain surface and are now maturely dissected into gracefully rolling forms.
4. Southwestern Wisconsin and parts of the adjacent states of Illinois, Iowa and Minnesota are known as the driftless zone, because, although bordered by drift sheets and moraines, it is free from glacial deposits.