caa a22 4500 477064388 CHVBK 20180405111408.0 cr unu---uuuuu 170330e19961201xx s 000 0 eng 10.1007/BF02440110 doi (NATIONALLICENCE)springer-10.1007/BF02440110 Thermal maturation of the Lower Palaeozoic strata in the southwestern margin of the Malopolska Massif, southern Poland: no evidence for Caledonian regional metamorphism [Elektronische Daten] [Z. Belka, A. Siewniak-Madej] Conodont colour alteration index (CAI) values have been used for the assessment of the thermal history of Lower Palaeozoic strata in the southwestern margin of the Malopolska Massif, along the contact with the Upper Silesian Massif. The CAI data provide no evidence for a previously suggested greenschistgrade regional metamorphism in the Cracow-Myszkow zone during the Caledonian epoch. Near Zarki, the Silurian rocks display a relatively uniform thermal overprint (CAI values of 4) resulting from sedimentary burial during the early Late Carboniferous. The estimated maximum temperatures of 200-220°C can be explained by an elevated heat flow associated with the Cracow Fault system. This thermal maturation level was locally enhanced (CAI values up to 8) after the Westphalian, due to the magmatic activity caused by the Variscan regional extension. Springer-Verlag, 1996 Thermal maturation nationallicence Lower Palaeozoic nationallicence Conodont colour alteration index nationallicence Variscan intrusives nationallicence Malopolska Massif nationallicence Poland nationallicence Belka Z. Geologisch-Paläontologisches Institut der Universität, Sigwartstr. 10, D-72076, Tübingen, Germany aut Siewniak-Madej A. State Geological Institute, Silesian Branch, Krolowej Jadwigi 1, PL-41200, Sosnowiec, Poland aut Geologische Rundschau Springer-Verlag 85/4(1996-12-01), 775-781 0016-7835 85:4<775 1996 85 531 https://doi.org/10.1007/BF02440110 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02440110 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Belka Z. Geologisch-Paläontologisches Institut der Universität, Sigwartstr. 10, D-72076, Tübingen, Germany aut NATIONALLICENCE 700 1- Siewniak-Madej A. State Geological Institute, Silesian Branch, Krolowej Jadwigi 1, PL-41200, Sosnowiec, Poland aut NATIONALLICENCE 773 0- Geologische Rundschau Springer-Verlag 85/4(1996-12-01), 775-781 0016-7835 85:4<775 1996 85 531 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer