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(Article of periodic en Anglais - 1977)

Document title

Classification and terminology of morainic landforms in Finland

Authors(s) and Affiliation(s)

AARIO H. ;

Abstract

The terms assigned to Finnish morainic landforms were frequently originally established for areas where the glacial environment was different from that in Finland. The terms therefore are not always applicable to the conditions found here and there is a need for some revision. Some new proposals are presented in this paper. Landforms tend to form groups of closely related genetic assemblages or of complexes where the members are areally related, but often genetically different. It is more logical to handle them as an association of forms, rather than to split the group artificially into a number of separate units. A gradational series of assemblages from a fluting assemblage into a drumlin assemblage and further into a hummocky active-ice assemblage characterizes the Koillismaa reference area. A bimodal flow system prevailed during the formation of the landforms. Spiral flow predominates in the formation of flutings and linear drumlins, whereas up and down movement predominates in the formation of the transverse ridges of Rogen moraine. Between these end members combinations of these flow patterns occur. (E. Jahn).

Source

Article of periodic

published at : Boreas. An international journal of Quaternary geology

Editor :

Millesime : 1977, vol. 6, no1 [pp. 87-100]

Language

Anglais

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