Geologia
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ISSN 0138-0974
e-ISSN: 2353-0782
Issue Date
2006
Volume
T. 32
Number
Nr 3
Description
Journal Volume
Geologia
T. 32 (2006)
Projects
Pages
Articles
Hydrogeologiczne właściwości dewońskich skał węglanowych w masywie świętokrzyskim
(Wydawnictwa AGH, 2006) Rzonca, Bartłomiej
The monograph concerns the regional-scale research done on the identifying hydrogeological properties of Devonian limestone and dolomites. There were examined the properties of the hydraulic subsystems of the entire massifs: rock matrix, fissures, karst voids and the residual deposits filling the karst voids. The results demonstrated clearly insignificant role of the matrix (also as water storage), the hydraulic role of the karst forms is also strongly limited by the fillings properties. The essential part of the publication is a reinterpretation of the regional set of pumping test results (218 wells) in steady-state conditions. The evaluation demonstrated very high, random variability of the environment. The interpretations of some unsteady-state tests exactly confirmed the values obtained from the steady-state conditions pumping.
Pstre utwory typu brekcji zawałowej z Kopalni Węgla Kamiennego »Marcel« (Górnośląskie Zagłębie Węglowe)
(Wydawnictwa AGH, 2006) Muszyński, Marek; Skowroński, Andrzej; Lipiarski, Ireneusz
In the »Marcel« Coal Mine a collapse breccia was found in a cross-cut at the 300 m level in 2001. The breccia occurs within red beds, in a zone where the seam No. 505 has a reduced thickness. With regard to an exceptionally diversified mineral composition that results from a complex origin of this rock, it was studied using optical microscopy as well as the XRD, IR and SEM/EDS methods. Neogenic components of the breccia are represented mainly by Mg-Fe-montmorillonites, halloysite-7 A and -10 A, harmotome, hematite, siderite and cristobalite. Additional minerals identified include mullite, goethite, mixed-layer illite/smectite, kaolinite-T, alunite, chalcopyrite and sphalerite. They are accompanied by usually numerous quartz epiclasts and traces of organic matter. The breccia consists of fragments of hanging wall rocks, mainly Carboniferous claystones and mudstones and their minerals, thermally altered and, then, metasomatically bound with scarce cement. The rock was formed by filling an empty space left after partly burned out bituminous coal, self-ignited as a result of pre-Miocene weathering. The metasomatic processes and cementation took place in the environment with gradually changing conditions, from strongly acidic and oxidizing to alkaline and reducing.