Geoscience Reference
In-Depth Information
Fig. 3.10
Extensometer TM-
71 in Saeva Dupka Cave,
Bulgaria (photo Dr.
N. Dobrev)
Fig. 3.11
TM-71 installed in
2013 in Domuz Maara Cave,
Bolata karst valley, NE
Bulgaria
2,376 m high mountain range. The karst landforms
are developed mainly in Triasssic, Jurassic, and Cre-
taceous carbonate complexes. Due to complex geo-
dynamic reasons, karstified rocks are in complex
lithological and tectonic discordance. The karst in
West Stara Planina is typical in this respect. Mor-
phologically,
diverse. The karst massifs in West Stara Planina
(Chepan Mountain, Vratsa Mountain, Ponor Moun-
tain, etc.) have typical geomorphologic features of the
classical Dynaric karst: karren fields, deep gorges,
blind valleys, deep pot-holes, poljes, etc. The karst
geomorphology and hydrology have been studied by
several researchers: Radev (
1915
), Angelova (
2003
),
the
karst
in
Stara
Planina
is
very
