Relations between shoreline gradients, uplift, and ice recession

Abstract

Mörner, N. A. 1974. Relations between shoreline gradients, uplift, and ice recession. Norsk geogr. Tidsskr. 28, 237–241. In glacio-isostatically uplifted areas, there is a close relation between the gradient of the shorelines (Sg), the rate of relative uplift (RU), the gradient of the Marine Limit (MLg), and the rate of ice recession (IR). These relations are established by means of a graph and an equation. If three of these variables are known, the fourth can be calculated. In Sweden, for example, the IR, MLg, and RU factors are usually known whilst the Sg factor (for the oldest shorelines) is unknown. The graph and the equation provide a new method of establishing the Sg factor in such areas. In most areas, the IR factor is more or less unknown, however. In areas deglaciated during the Holocene, the Sg factor is usually well established. The graph and the equation provide a new method of establishing the IR factor, i.e. the rate of ice recession and hence the glacial chronology.