Geology, U-Pb dating and 3D visualisation of late-orogenic Klenov Pluton (Pelhřimov Core Complex, Central European Variscides)

Jaroslava Pertoldová, Kryštof Verner, David Buriánek, Jan Valenta, Barbora Dudíková, Zuzana Skácelová, Jan Jelének, Jan Jelínek, Kenneth Johnson, Otmar Petyniak and Petra Hejtmánková

Journal of Maps, 2024, vol. 20, issue 1, 2317144

Abstract: The geological map of the Klenov Pluton (Moldanubian Batholith), and its 3D visualization, brings the new findings in the context of granite emplacement within late-Variscan settings. The Klenov Pluton has a peraluminous composition resulting from partial melting of metasedimentary sources and subsequent differentiation. The new ages 327.14 ± 0.21 Ma and 327.80 ± 0.37 Ma, reflect the narrow time-span of magma emplacement and cooling. The 327 Ma Klenov Pluton was emplaced syntectonically as a ‘sheet-like’ granite intrusion at depth ca. 10 kilometers during the later stages of the Pelhřimov Core Complex exhumation (at ca. 329 to 327 Ma) associated with ∼N–S oriented compression. Gravity modelling suggests that the Klenov Pluton has an asymmetric shape where its western flank is parallel to the ∼NW moderately dipping Pelhřimov Core Complex. The eastern margin of the Pluton is shallower and has been later modified by ∼SE-side-up normal faulting (Lodhéřov Fault Zone).

Date: 2024
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DOI: 10.1080/17445647.2024.2317144

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