Five new sheets of the geological maps of the 1 : 25,000 scale have been finished by the Czech Geological Survey in a broader vicinity of the town Šumperk (sheets 14–423, 14–412, 14–414, 14-421 and 14-423). The mapping covered the geological units along the contact of Lugicum (the eastern part of the OrlicaSnieznik Unit, the Staré Mìsto Group and the eastern margin of the Zábøeh Crystalline Complex) and Silesicum (the Keprník and Desná units). Both Lugicum and Silesicum, differing in the character of protoliths and in the succession and P-T parameters of metamorphic events, underwent a complex polyphase tectonometamorphic development. The regional distribution of the units reflects mainly the kinematics of the Variscan tectonics. The recent mapping supports the idea that the contact between Lugicum and Silesicum lies along the Ramzová line (“thrust”) representing the steeply to W declined strike-slip with the left-handed movement. This boundary could previously have the thrust character (similarly as the Moldanubian thrust) and latter it was reworked to the strike-slip fault without occurrences of ultrabazic rocks. The Ramzová fault is accompanied with mylonites, locally with dolomite, ankerite, rarely chalcopyrite. The important metamorphic jump exists along this fault – the staurolite zone in the Staré Mìsto Group vs. the biotite zone in the upper part of the Branná Group. The contact between the orthogneisses of the Orlica-Snieznik Unit and the rocks of the Staré Mìsto Group has a character of the thrust fault with local occurrences of serpentinites. The inner pattern of the Staré Mìsto Group is scaled, the individual scales are separated by longitudinal faults. The previous thrust faults are emphasized by lenticular bodies of ultrabazic rocks and they are locally transformed to the lowangle faults typical for the extension regime. The contact between the Keprník and Desná units has been also interpreted as a fault of the strike-slip type. Both these units, represented by their petrographically uniform cores and petrographically more varied covers, differ in the character of deformation and in the intensity of retrograde processes. But the polymetamorphic development and the segmentation to a range of scales and nappes are their common feature. The inner structure of the Branná Group, enveloping orthogneisses of the Keprník Unit core, has a thrust character. The mapping enabled to divide the Group into three distinguishable portions (scales) locally having considerable thickness or being tectonically entirely eliminated. The imbrication structure of the Desná Unit is well documented by the alternation of scales of metagranites and volcano-sedimentary rocks of the Vrbno Group. The metamorphic grade of the Variscan metamorphism in the southern part of the Desná Unit varies from lower greenschist facies (chlorite zone) to medium amphibolite facies being attained at the western margin of this unit. The thermobarometric studies indicate the temperatures of 520–530 °C for garnet zone (chloritoid + garnet); 540–570 °C for staurolite zone (garnet + staurolite) and 570–600 (630) °C for staurolite – (kyanite) – sillimanite zone. No evidence of pressures exceeding about 5 Kb was found in the Variscan rocks in Silesicum. The character
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