| Prior investigations of changes in the direction of drainage and their chronology were based on ancient shorelines, varve clay counts and radiocarbon datings. |
| The basal, coarse layer of a varve is commonly overlain by microlaminared silt and clay, reflecting variable streamflow during summer. |
| In Sweden, by contrast, it has been possible to tie a glacial varve chronology to present time, and so create a truly absolute dating technique. |
| Cosmogenic-nuclide and varve chronologies for the deglaciation of southern New England. |
| Llanquihue Lake's varves are a node point in southern Chile's varve geochronology. |
| We do not have this in earlier periods and so we must use other methods, the main ones being varve counting, ice-core timescales and uranium series dating. |
