New Findings on the Geomorphological Development on the Ljubljansko barje

Abstract

The study discusses the geomorphological development of the Ljubljana Moor which represents an extensive and comparatively independent sector in the extreme southern part of the Ljubljana Basin. The author has made a systematic investigation of the tectonic conditions, of the remains of the Tertiary peneplains, and of the terraces of bedrock and of accumulated material (of the Tertiary and Quarternary age), as well as of the stratum of various Quarternary sediments, some 300 metres thick, that lies at the bottom of the basin of Ljubljana Moor. In it we find interchanged loamy, chalky, and organogenic strata (of the Holocene and Interglacial age), the sandy mineralogenic strata (from the period of the taiga) and the intermediate strata of gravel (from the periods of the most intensive glaciations). Each Ice Age began with an intensive fluvioperiglacial deposition by the Ljubljanica River and by its tributaries in the area of the Ljubljana Moor. During the peaks of glaciation, however, the deposition brought by the river Sava becomes prevalent: the river Sava had brought enormous masses of glaciofluvial gravel from under the Julian and Kamnik Alps with which it covered even the fluvioperiglacial deposits in the fringe areas of the Ljubljana Moor.