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Swiss Journal of Geosciences
Fig. 1 | Swiss Journal of Geosciences

Fig. 1

From: Facies architecture, geochemistry and petrogenesis of Middle Triassic volcaniclastic deposits of Mt. Ivanščica (NW Croatia): evidence of bimodal volcanism in the Alpine-Dinaridic transitional zone

Fig. 1

A Geotectonic sketch map of the major tectonic domains (simplified after Schmid et al., 2008). B Geological sketch map of the Croatian part of the Zagorje-Mid-Trandanubian Zone, i.e. Sava Composite Unit (slightly modified after Pamić & Tomljenović, 1998 and Haas et al., 2000). Legend: 1 = Quaternary and Neogene fill of the Pannonian Basin; 2 = Upper Cretaceous-Paleocene flysch; 3 = Ophiolitic mélange (Kalnik Unit); 4 = Upper Triassic platform carbonates; 5 = Upper Paleozoic and Triassic clastics and carbonates interlayered with volcanics and tuffs; 6 = Paleozoic-Triassic metamorphic complex (Medvednica Unit). C Simplified geological sketch map of the central part of Ivanščica Mt. (modified after Šimunić et al., 1982). Legend: 1—Neogene and Pleistocene sedimentary rocks; 2—Upper Jurassic-Lower Cretaceous limestones, shales, cherts, 3—Jurassic ophiolite mélange with blocks of basalt and gabbro (blue field), 4—Upper Triassic limestones, dolomites and dolomite breccias, 5—Upper to Middle Triassic dolomites, dolomite breccias and limestones, 6—Middle to Lower Triassic dolomites, limestones, dolomite breccias, radiolarites, clastics rocks intersected by a series of andesite-basalts (dark green field) and/or acid tuffs (light green field); 7—reverse or thrust faults; 8—normal faults; 9—discordance line, tectonic-erosion discordance; 10—sample location. D Detailed geological map of the study area compiled from Šimunić et al. (1982) and the results of this study. a Stereoplot of bedding planes (purple lines) and fold axes (F) measured in Lower Triassic sediments of the Vilinska špica nappe and bedding planes measured in Middle Triassic volcaniclastic rocks from the footwall (black lines). b Stereoplot of bedding planes (black lines), fault planes (red lines) and fold axis (F) measured in Middle Triassic volcaniclastic rocks from the Vudelja Quarry. (c) Stereoplot of the bedding planes measured in Middle Triassic sediments (black lines) and Lower Miocene sediments (blue lines) and the fault planes measured in Middle Triassic sediments (red lines)

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