Karmazienė, D., Karmaza, B., Baltrūnas, V.
Glacial geology of North Lithuanian ice marginal ridge and
surrounding plains
During the last decades many studies were concentrated on
the North Lithuanian ice marginal ridge of the Last Glaciation (Late Nemunas,
Late Weichselian). The North Lithuanian ice marginal ridge or so–called Linkuva
ridge was formed by Žiemgala Ice Lobe that advanced at the end of the
glaciation through the Gulf of Riga. This ridge is considered as a boundary of
glacier limit during the North Lithuanian recessional phase of the Late Nemunas
Baltija stage. Linkuva ridge is stretching about 130 km as a bow-shaped ridge
and is marking the boundary of an active ice lobe. The thickness of Quaternary
deposits is 10–12 meters on the average but varies from 1.0 to 39.0 meters: the
thinnest Quaternary cover is characteristic for river valleys, whereas the
thickest one is related with the highest altitudes of the present topography or
with rare palaeoincisions of the sub–Quaternary surface. Pleistocene strata are
subdivided to three till complexes in some places separated by inter–till
sediments.