Publication details
PŘEHLED HISTORIE VÝZKUMŮ PERMOKARBONSKÝCH SEDIMENTŮ JIŽNÍ ČÁSTI BOSKOVICKÉ BRÁZDY (ČÁST 2. GEOLOGIE A PETROGRAFIE)
| Title in English | RESEARCH OF PERMIAN-CARBONIFEROUS SEDIMENTS OF THE SOUTHERN PART OF THE BOSKOVICE GRABEN; AN OVERVIEW (PART 2. GEOLOGY AND PETROGRAPHY) |
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| Authors | |
| Year of publication | 2017 |
| Type | Article in Periodical |
| Magazine / Source | Acta Musei Moraviae, Scientae geologicae |
| MU Faculty or unit | |
| Citation | |
| Field | Geology and mineralogy |
| Keywords | overview of the history of research;conglomerate;sandstone;Boskovice Graben;Permian;Carboniferous;Czech Republic |
| Description | An overview of geological and petrologic research of the southern part of the Boskovice Graben summarizes the knowledge and points out an attention to some unsolved problems. Sedimentation in the basin had a fluvial to lacustrine character. Upper Carboniferous breccias and Balinka conglomerates represent the start of deposition, locally substituted by coarse-grained sandstones. They pass gradually upwards into gray and locally red-brown sandstones intercalated by aleuropelites, conglomerates and several coal seams, accompanied coal claystones and organic component-rich pelocarbonates with cyclic arrangement. The whole sequence belongs to the Rosice Formation. Brown-red colored sandstones and aleuropelites belonging to the Padochov Formation form the dominant part of the overlying Permian sediments. Particularly dark bituminous shale and marl ("combustible shales"), rich fossils of Lower Permian in age (Zbýšov and Říčany horizons) are conspicuous. Coarse-grained arcose to feldspar-rich sandstone or cyclic alternation of sandstone-conglomerate–siltstone beds represent the overlying deposits. Red-brown fine-grained sandstones, siltstones, shales and finally coarse-grained arkoses were recognised in their superposition. Very coarse-grained Rokytná conglomerate are developed in the eastern rim of the basin. Rokytná conglomerates are product of episodic flood sedimentation (fan-conglomerates) associated with the uplift of the western margin of the basin formed by Dyje-Ivančice (Brno) pluton. Descriptions of conglomerates, sandstones and aleuropelites and as well as a brief characteristics of bituminous sediments, hard coal, (pelo)carbonates and (sub)volcanic rocks are given. |