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Kartowanie geologiczne masywu górskiego Włodarza (metamorficzny kompleks sowiogórski)

Cymerman Zbigniew

Przegląd Geologiczny

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2025

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Vol. 73, nr 8

724--732

EN

As part of the ongoing tasks of the Polish Geological Survey, the second edition of the Detailed Geological Map of the Sudetes Mountains (SMGS) at a scale of 1 : 25,000 was initiated in 2019. Within this framework, the Walim sheet was completed, encompassing the area of the Włodarz Mountain Massif (MGW). This paper pres¬ents a new, detailed geological map of a selected portion of the Sowie Góry (Owl Mountains) Metamorphic Complex (MKS). Systematic geological mapping of the MKS began in the late 19th century, with Dathe ’s contributions to several sheets of the Geologische Karte von Preussen und benachbarten Bundesstaaten at a 1 : 25,000 scale. A review of past cartographic studies covering the MKS and MGW areas reveals considerable discrepancies in geological interpretations by various authors, including Dathe, Finckh, Grocholski, Żelaźniewicz, and Cymerman. These differences largely reflect the region s poor exposure conditions and the extreme lithological heterogeneity of the MKS. The new mapping results for the MGW area stand in contrast to those of Żelaźniewicz, particularly regarding the role of migmatitic processes. The revised inter¬pretation highlights the intensity and diversity of migmatization, which were previously understated. Moreover, the concept of sequential, large-scale folding structures proposed by Żelaźniewicz appears incompatible with earlier German and Polish mapping efforts (Dathe, Finckh, Grocholski, Kryza).

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Kartografia geologiczna metamorficznego kompleksu sowiogórskiego

Cymerman Zbigniew

Przegląd Geologiczny

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2025

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Vol. 73, nr 5

511--516

EN

The second Polish edition of the Detailed Geological Map of the Sudetes (SMGS) at a scale of 1 : 25,000 was initiated with seven map sheets: Zagórze Śląskie, Walim, Pieszyce, Jugów, Ludwikowice Kłodzkie, Nowa Ruda, and Ostroszowice. These sheets cover the Sowie Góry Metamorphic Complex, a key geological unit in the Central Sudetes. This abstract summarizes the results presented in seven chapters, comparing the newly compiled maps of the second edition with older cartographic data. In the updated geological interpretation of the Zagórze Śląskie, Walim, Pieszyce, and Ostroszowice sheets, stromatitic migmatites are the dominant lithological variety, with nebulitic migmatites occurring less frequently. The latter are most prominent in the Jugów, Ludwikowice Kłodzkie, and Nowa Ruda sheets. Schlieren migmatites are particularly common in the Pieszyce, Ostroszowice, and Ludwikowice Kłodzkie areas, while homogenized migmatites occur notably in the Pieszyce and Walim sheets. Additional migmatite types were also identified. Other mapped lithologies include granitic gneisses, various gneisses (aplitic, leptitic, layered, mylonitic), along with mylonites, ultramylonites, and phyllonites. Several units remain unresolved in terms of cartographic classification. The map also documents mafic and ultramafic rocks, including gabbros, hyperites, serpentinites, and amphibolites, as well as several distinct types of vein rocks.

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SHRIMP wspiera szczegółową kartografię geologiczną w Sudetach

Cymerman Zbigniew, Krzemińska Ewa

Przegląd Geologiczny

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2024

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Vol. 72, nr 12-1

719--722

EN

For the first time, at the beginning of the 2nd edition of the Detailed Geological Map of the Sudetes 1 : 25,000, new, extended geochronological studies using the U-Pb method on zircons by means of the modern SHRIMP device were planned. They were completed by chemical dating of monazites with the WDS Cameca Sx100 electron microprobe. As a result of age studies about 920 new U-Pb zircon analyses were obtained from 28 samples of the several important rock-types of the Góry Sowie Metamorphic Complex, which significantly expands the scope of radiometric age record in this area. Apart from age, other diagnostic parameters were also used, such as Th/U ratios in zircon. They allow better understanding of the extremely complicated tectonometamorphic evolution of the Góry Sowie Metamorphic Complex during the complex orogenic processes in the Paleozoic in the NE part of the Bohemian Massif.