Bentonite is a significant industrial raw material which deposits deserve protection. The initiative for elaborating this study was the decision from November 2019 of current owner (the town Ivančice) to remediate entire area deposit Ivančice-Réna. Lower Miocene volcaniclastic rocks Ivančice-Réna (Ivančice) and Middle sediments in surrounding Lipník nad Bečvou are relatively rich clay minerals ...

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The age of tuffaceous interlayers, represented by tuffs and tuffites, which are common in the Upper Jurassic-Lower Cretaceous deposits Western Siberia (the Bazhenovo, Tutleim Frolov Formations), is discussed. nature these interlayers associated with subglobal (transfer more than 1--2 thousand km) spread volcanic ash (0.001--0.1 mm) its sedimentation burial a vast epicontinental marine basin dur...

barika gold (and silver) rich massive sulfide deposit is located 18 km east of sardasht, north western part of sanandaj-sirjan metamorphic zone. rock units outcropped in this area are cretaceous metamorphosed volcano-sedimentary rocks in green schist facies, and include association of meta-andesite, meta-tuffite, phyllite and slate rocks, where the meta-andesitic unit (kmv1) is host rock to the...