Digital model of the crystalline basement and Permo-Carboniferous volcano-sedimentary strata in the Mnichovo Hradiste Basin and correlation with the geophysical fields

Correlation of boreholes and geophysical data provides the framework for 3D modelling of the crystalline basement and the Permo-Carboniferous volcano-sedimentary strata in the Mnichovo Hradiste Basin. The knowledge of depth of the individual interfaces acquired from boreholes database and interpretation of the seismic profiles enabled construction of 3D models. The Straz crystalline block has bounded the Mnichovo Hradiste Basin on the north, its elongation is in NNW-SSE direction and maximal depth has reached near Sobotka. Its second deepest part known as Mcely or Sukorady sub-basin has been detected southeast of Mlada Boleslav. The negative gravity anomaly in the Mimon-Cesky Dub-Turnov-Mnichovo Hradiste area indicated presence of "light" granitic rocks in the crystalline complex. Moreover, the highest volume of rhyolite ignimbrites with a thickness of up to 180 m is concentrated in Permo-Carboniferous volcano-sedimentary strata in this negative gravity anomaly area, which can be related to a rather deep Late Paleozoic volcanic source (up to a depth of about 10 km). KEYWORDS: Mnichovo Hradiste Basin, crystalline basement, Permo-Carboniferous volcano-sedimentary complex, 3D model, seismic, gravity and magnetic field