Preorogenic (preflysch) sedimentation



Moravian Karst Development
Hády-Říčka Limestones – mostly calciturbidites, more to the east shallow water platform limestones
Křtiny Limestones hemipelagic facies, mud calciturbidites

Ludmírov and Drahany  development – continuation of the sedimentation of
Jesenec and  Ponikev formations





Synorogenic (flysch) sedimentation
Distinct W-E polarity





Drahany Upland
Březina Formation – transition to the flysch sedimentation. Shales siltstones,
intercalations of calciturbidites and siliciclastic turbidites
Protivanov Formation
Velenov Shales – shales with thin intercalations of siltstones and greywackes
Brodek greywackes – greywackes, intercalations of Kořenec conglomerate
Rozstání Formation – finely rhytmic flysch, shales, siltstones, fine greywackes
Myslejovice formation – lateral transition from coarse grained facies in the south
To more fine grained sediments in the north
Račice and Luleč conglomerates – polymict, crystalline rocks, sediments.
Lulec – Moldanubian source. Shales – late Visean fauna, Goniatites,
Posidonia becheri, Archegonus moravicus, flora













 Nízký Jeseník Mountains
Andělská Hora Formation – alternation of dark shales, siltstones and graywackes,
Intercalations of paraconglomerates. Predominance of distal turbidites, epizonal
metamorphosis
Horní Benešov Formation – greywackes, intervalations of fine conglomerates.
Equivalent of Protivanov Fm.
Moravský Beroun Formation – quartz conglomerates with carbonate cement,
limestones wiyh sand admixture, breccias. Locally restricted
Moravice Formation – distal flysch sediments, shales, siltstones, locally greywackes,
 5 members. Goniatites, flora. Equivalent of Myslejovice Fm.
Hrádek-Kyjovice Formation – lower part Hrádek Beds– greywackes with  lenses
of conglomerates. Kyjovice beds – siltstones and shales predominate, intercalations
of greywackes. Goniatites of latest Visean-earliest Namurian. Nautiloids,
Bivalves., flora.
















Molasse sedimentation
Ostrava-Karvinná Basin – part of the Upper Solesian basin. SE slopes of the
Bohemian Massif underneath West Carpathians.
Paralic sedimenation with
cyclothems – Ostrava Fm.







Permocarboniferous basins
Coal-bearing, mainly  from Westhlaian  to Stephanian
Most complete sedimentation - Innersudetic Basin, communication with Podkrkonoše Basin.
Central Bohemian basins
Boskovice furrow. Halfgraben basin, originated during the gravitational colaps of the Variscan
orogene.
Originated mostly after the main phases of the Variscan orogeny, not  strongly tectonically
influenced







Boskovice basin (Boskovice graben) (BG) is an asymmetrical basin elongated in SSW to NNE direction
from
Boskovice to Moravský Krumlov, filled with Permo-Carboniferous terrestrial deposits The maximum
thickness
of the basin fill is about 2000 m.
Deposition started in the southern part of the BG (the Rosice-Oslavany area) during the Stephanian
C and
 spread towards the N and NE, which is also the deepest point of the basin. The termination of the
basin
filling was diachronous; sedimentation ended in the Early Autunian in the south, in the Early to
Middle
Autunian in the centre and in the Middle Autunian in the NE part of the basin).
Rokytná conglomerates – in the eastern part, alluvial fans, material from the Brno Massif
Balin Conglomerates – material from Moldanubian, Moravia and Letovice crystalline.
Pass upward into a heterogeneous, generally more fine-grained fluvial, deltaic and lake deposits –
Lower
Red-Brown Formation
Rosice-Oslavany Formation. Several coal seams, latest Carboniferous to Permian.
Padochov Formation – red and grey clastics, interlayers of pelocarbonates, fauna and flora.
Veverská Bitýška Formation – predominance of red-brown sandstones, migration to the north,
first sediments of the Letovice Depression
Letovice Formation – cyclic red and grey sandstones, layers of siltstones and carbonates. Fauna and
flora.
Fauna - ray-finned fishes, acanthodians, sharks, insects, stegocephalians (Discosauriscus
austriacus)
Flora – ferns, seed-ferns (Autunia conferta), cordaites, conifers (Walchia, Ernestiodendron)




Grafika26