National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
The new finding of a K- bentonite ( tuffite ) seam 22b ( 080.2 OKD " tuffite Ivan " ) in Petřkovice Mbr Ostrava Formation ( Namur A) in the Czech part of the Upper Silesian Basin
Martinec, Petr ; Hoch, I. ; Ščučka, Jiří
New finding of a K-bentonite (tuffite) horizon comes from a mine borehole Staric II 938/13 (depth of 7,6 - 7,62 m). It belongs to the Petrkovice Mbr (Namurian A, Pendleian) in the Ostrava Fm. It occurs 2,3 m in overburden of coal seam 22b (080.2 numeration after Ostrava Mine District). The horizon is located 58 m above the coal tonstein of the coal seam 21d (077 OKD). This K-bentonite horizon is of local importance and will be used for correlation of coal seams in mine field Staric in the Czech part of the Upper Silesian coal basin.
Fulltext: content.csg - Download fulltextDOC
Plný tet: UGN_0398227 - Download fulltextDOC
Poruba Mbrs, Ostrava Formation ( Namurian A, Arnsberg ) in the Czech part of the Upper Silesian Basin
Horák, J. ; Martinec, Petr ; Hoch, I.
In the Czech part of the Upper Silesian basin, full preservation of the Poruba Mbrs of Ostrava Fm, i.e., retention of their full thickness, can be observed only in the eastern and southern zones of the basin, while no more than relics exposed by denudation remain in the western and central zones. The Poruba Mbrs (Namurian A, Arnsbergian, E2b) were deposited on the outskirts of Ostrava Fm (Namurian A, Pendleian-Arnsbergian) on a flat coastal plain, interspersed with infrequent but regularly spaced marine transgressions. Individual sedimentary sections—mezocycles—are well-defined (within the meaning of the concept put forward by ČEPEK & HAVLENA 1975). Their sedimentary development reflecting the climate changes during the Carboniferous period have been described. Five complete mezocycles were identified (named Koks, Konrad, Lotar, Otakar, and Gaebler after major marine horizons), plus an incomplete one (Filip, constituted by only the upper continental portion of the mezocycle), inasmuch as the marine part (a group of faunistic horizons of Barbora) is presently ascribed to Jaklovec Mbr.
Fulltext: content.csg - Download fulltextDOC
Plný tet: UGN_0398206 - Download fulltextDOC

Interested in being notified about new results for this query?
Subscribe to the RSS feed.