The first name relates to a synclinal tectonic unit discovered in the early 20th century by Leppla (1900) and later investigated and named by Don (Don & Don, 1960) as Idzikow Brachysyncline. The second name relates to newly postulated tectonic structure which is equal to the Eastern Flexure (Don & Don, 1960) developed close to the eastern marginal fault of the UNKG ("Wilkanow Fault" in Badura et al., 2003).
In this figure, however, there are visible linearly extended strips, which relate to cropped out layers of various weathering resistivity that led to formation of steep slopes along the limbs of the Idzikow Brachysyncline. Three dimensional interpretation basing on the intersection of strips bends in the transverse valleys both for east and south-west limbs indicates an inclination of layers toward the centre of this unit, what unambiguously proves its synclinal character, as had been earlier documented by mapping (Fig.
This similarity is increased by undoubtedly steep inclination of conglomerate layers in the eastern limb of the Idzikow Brachysyncline, as it appears in the Pasterskie Skalki rock site (Don & Don, 1960--Fig.
The terms "Dlugopole brachysyncline" and "Idzikow brachyanticline" have been used on purpose, contrary to their nearly one hundred year old nomenclature.
The sandstones and conglomerates build exclusively the topmost part of the so-called "Idzikow brachysyncline".