Wyniki wyszukiwania - BazTech

1

Age revision of Carboniferous rocks in the northern part of the Intra-Sudetic Basin (SW Poland) based on miospore data

Górecka-Nowak Anna, Jankowska Adrianna, Muszer Jolanta

Geological Quarterly

|

2021

|

Vol. 65, No. 1

art. no. 8

EN

Palynostratigraphic studies of the Carboniferous strata of the Szczawno and Wałbrzych formations, outcropping in the vicinity of Wałbrzych in the northern part of the Intra-Sudetic Basin, are reported. Rocks of the Szczawno Formation in a section near Konradów had earlier been assigned to the Upper Visean, while rocks of the Wałbrzych Formation in the Biały Kamień section were included to the Lower Namurian [the Stenozonotriletes triangulus-Rotaspora knoxi (TK) Miospore Zone]. This study describes abundant palynological material with many taxonomically diverse miospore assemblages from these rocks, allowing precise palynostratigraphic conclusions. These showed that the rocks of the Szczawno Formation studied should be referred to the lower part of the Serpukhovian [Verrucosisporites morulatus (Vm) Subzone], correlated with the lowest Namurian, while rocks of the Wałbrzych Formation from Biały Kamień belong to the Lower Bashkirian [Lycospora subtriquetra-Cirratriradites rarus (SR) Subzone], correlated with the Upper Namurian A. These results indicate that the rocks from both sections studied are younger than they were earlier believed. This revises the age of the Szczawno and Wałbrzych formations in the northern part of the Intra-Sudetic Basin which belong to four miospore zones, from Vm to SR, corresponding to the Serpukhovian and lowermost Bashkirian (Namurian A corresponding to the Pendleian to Alportian of British chronostratigraphy).

2

Coal-bearing capacity of the Petřkovice Member (Ostrava Formation, Serpukhovian, Mississippian) of the Upper Silesian Basin (Czech Republic and Poland)

Hýlová L., Jirásek J., Sivek M., Jureczka J.

Geological Quarterly

|

2016

|

Vol. 60, No. 3

637--649

EN

The Petřkovice Member is the basal unit of the paralic succession of the Ostrava Formation of the Upper Silesian Basin. This member is a valuable source of information about the transition from a marine basin filled with siliciclastic sediments into a paralic basin with the beginning of coal-bearing sedimentation. Models of: (1) the number of coal seams, (2) their total thickness, and (3) the coal content with respect to the total thickness of the succession were created to describe and assess the coal-bearing capacity of the Petřkovice Member. The authors present models for coal seam thicknesses exceeding either 10 or 40 cm. The coal-bearing capacity of the Petřkovice Member is very low. The average share of coal seams thicker than 0.1 m is 3%. The share of coal seams with a thickness that exceeds 0.4 m is only 1.66%. Moreover, in large areas of the basin, in the N and NE parts, the coal-bearing capacity is close to zero, because coal seams of greater thickness were detected only locally there. Based on these models and on other geological data, it is obvious that the onset of coal sedimentation was gradual and limited to particular sites showing the greatest subsidence of the basin floor. In places where minor subsidence took place, there were likely unfavorable conditions for accumulation of organic matter.

3

Rugosa (Anthozoa) of the Serpukhovian Lower Carboniferous) of the Upper Silesian Coal Basin

Fedorowski J., Machłajewska I.

Acta Geologica Polonica

|

2014

|

Vol. 64, no. 1

13--45

EN

Two species, Antiphyllum sp. nov. 1 and Zaphrufimia sp. nov. 1, the first corals found in Štur horizon of the upper Malinowickie Beds, Upper Pendleian (E1), are here described. Additional study of the subspecies of Zaprufimia disjuncta show them to be more similar than previously thought. Although they occur mainly in the Enna and Barbara horizons, one specimen of Z. d. serotina comes from the Gabriela horizon. Biozone Zaphrufimia disujncta disjuncta/Z .d. praematura is proposed for the Enna and Barbara horizons. The subzone of Zaphrufimia/Triadufimia of that Biozone, defined by the presence of Triadufimia gen. nov., is restricted to the Enna horizon. As confirmed by the occurrence of Cravenoceratoides edalensis, the new subzone roughly corresponds to the E2b1 ammonite Zone. An Antiphyllum/Ostravaia/Variaxon assemblage Zone is proposed for the coral assemblage of the Gaebler horizon. Cravenoceratoides nitidus present in the Roemer band (Ib) shows it to correlate with the E2b2 ammonite Zone. Comparison with other European regions suggests possible faunal exchange between those areas and the Upper Silesian Coal Basin in Serpukhovian time.

4

On three rugose coral genera from Serpukhovian strata in the Upper Silesian Coal Basin, Poland

Fedorowski J.

Acta Geologica Polonica

|

2012

|

Vol. 62, no. 1

1-33

EN

The rugose coral specimens included by Schindewolf (1952) in the genera Claviphyllum Hudson, 1942, Fasciculophyllum Thomson, 1883 and Pentaphyllum (Tachylasma) Grabau, 1922 are revised on the basis of the original collection. The first two taxa are included in Antiphyllum Schindewolf, 1952, either in its original sense or in its newly introduced subgenus Antiphyllites. The new genus Effigies is introduced for Pentaphyllum (Tachylasma) silesiacumcussed. New, detailed descriptions of species are supplemented by text-figures in order to document their intraspecific variability and phylogenetic relationships.

5

Palynostratigraphy of the Culm deposits of the Moravian-Silesian zone (Poland) at Toszek Castle Hill

Trzepierczyńska A.

Geological Quarterly

|

2003

|

Vol. 47, No 4

373-380

EN

The Early Carboniferous age of the flysch succession in the Moravian-Silesian zone has been based principally on lithological correlations with the stratotype goniatite-bearing section. Its uppermost part-the Kyjovice Formation in the region of Toszek (Poland)-has been studied palynologically for the first time. Miospore assemblages of the upper part of the Western European nitidus-carnosus (NC) miospore Zone of the early Serpukhovian have been distinguished. This agrees well with a general stratigraphic range of the Kyjovice Formation within the Go-E1a goniatite zones.