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Content available Budowa geologiczna doliny Białego Dunajca
The Biały Dunajec Valley is one of the large, meridionally oriented valleys cutting the Podhale Synclinorium. The tectonic origin of this valley has been suggested since the beginning of the 20th century. A large fault zone with an azimuth of about 20° has been recognized here. This zone extends to the north and cuts the Pieniny Klippen Belt, which is significantly lowered in its eastern side. The southern part of the Biały Dunajec fault zone (SBD) extends probably into the Tatra Massif (into the Mała Łąka Valley area and far to the south into the border of the Koszysta elevation and the Goryczkowa depression). The majority of faults constituting the SBD were formed during the initial phase as strike-slip faults; they were reactivated later as dip-slip faults with a prevailing dip-slip, mainly normal component. As a whole, the SBD is a scissor-like fault: in the northern part, near the Szaflary village, downfaulted is its eastern block, whereas in the southern part - its western block.
Tufas in the Podhale Synclinorium (southern Poland) occur as encrustations on moss and plant remains, crusts, porous, clastic and massive tufas. The tufas are almost entirely composed of calcite with small admixture of quartz, illite and chlorite. These deposits indicate the biotic and/or abiotic origin of calcium carbonate. The tufas occur in the vicinity of map-scale and minor fault zones. They precipitate near fissure springs linked with small faults and fault rocks or seepages along them. Exposures with tufas occur along several oblique and lateral zones. The oblique zones are related to Białka and Biały Dunajec faults that have normal components. The lateral zones of tufa occurrences are connected with lateral faults limiting the “zone of beds with gentle dips” and extensional brittle structures within the hinge of the synclinorium. The relationship of the tufa with brittle extensional structures suggests Quaternary tectonic activity of the Podhale Synclinorium that can be explained by continued uplift in the area studied.
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