Szczegóły publikacji
Opis bibliograficzny
Porosity evolution in the chalk: an example from the chalk-type source rocks of the Outer Carpathians (Poland) / Katarzyna GÓRNIAK // W: Filling the gaps – from microscopic pore structures to transport properties in shales : [EUROCLAY 2015 : Edinburgh, UK : 5th July 2015] / eds. Thorsten Schäfer [et al.]. — Chantilly : The Clay Minerals Society, cop. 2016. — (CMS Workshop Lectures ; ISSN 1521-740X ; vol. 21). — ISBN: 978-1-881208-46-4. — S. 211–218. — Bibliogr. s. 217–218. — Toż pod adresem http://www.clays.org/OTHER%20CMS%20PUBLICATIONS/wrksh21-pdf/CMS-WLS-21_16.pdf
Autor
Dane bibliometryczne
| ID BaDAP | 98295 |
|---|---|
| Data dodania do BaDAP | 2016-07-29 |
| DOI | 10.1346/CMS-WLS-21.16 |
| Rok publikacji | 2016 |
| Typ publikacji | materiały konferencyjne (aut.) |
| Otwarty dostęp |  |
| Konferencja | EUROCLAY 2015 |
| Czasopismo/seria | CMS Workshop Lectures |
Abstract
The development and evolution of pore space in the impure chalk-type source rocks of the Oligocene Grybo´w Marls (Outer Carpathians, Poland) have been investigated using high-resolution petrographic techniques (FESEM/BS/CCI). Evidence suggests that the Grybow Marls are the products of the re-deposition of shelf sediments in deeper parts of the Outer Carpathian Basin during the final stages of its closure. The initial shelf sediments had variable levels of clay content ranging from fairly pure to impure chalks. After redeposition, the diagenetic history was similar to that of chalk sediment modified during the initial stages of diagenesis and controlled by the clay content. Stress-induced micro-cracks are restricted mainly to foraminiferal tests. Most coccolith shields were unaffected by compaction as they were protected from crushing by the presence of clay cement; the cement was re-organized under stress, forming less porous lamellar aggregates. The timing of diagenetic processes indicates that the origin of the clay and the eogenetic overgrowth calcite cement influenced the pathway of burial diagenesis and, thus, the pore-space evolution in the impure chalk.
