Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/11556
DC Field | Value | Language |
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dc.date.accessioned | 2018-03-28T10:37:35Z | en |
dc.date.available | 2018-03-28T10:37:35Z | en |
dc.date.issued | 2018-02 | en |
dc.identifier.uri | http://hdl.handle.net/2122/11556 | en |
dc.description.abstract | he purpose of this study is to characterize sedimentologically and isotopically authigenic mineralization and low-rank coals (lignite) from the Velenje basin, Slovenia. Six structural types of calcite mineralization in a fine lignite gelified matrix were recognized, namely: (A) laminae and thin beds, (B) small lenses and lenticular bodies, (C) dispersed mineral matter in minute detritus, (D) calcite-substituted xylite fragments, (E) encrusted xylite fragments, and (F) calcite-coated and calcite-filled pores. Scanning electron microscopy revealed that in parts the calcified lignite is almost pure calcite. The carbon (–4.3 to +16.4‰) and oxygen (–14.5‰ to –6.6‰) isotopic composition indicates a carbonate precipitation temperature of between 5.7 and 45.5°C. The δ13Corg. values and δ15Nbulk of organic compounds were from –29.4‰ to –23.7‰ and from +1.8‰ to +5.9‰, respectively. The lower δ13Corg. values (up to –29.4‰) in the Velenje lignite indicate a high degree of gelification, while the δ15Nbulk values (up to +5.9‰) are indicative of intense mineralization. Furthermore, a carbon isotope fractionation factor (εTOC) of more than 32% suggests that unlike in recent lake sediments from Slovenia, Croatia, and Argentina, where oxic processes dominate, there was intense microbial activity (methane formation in anoxic conditions). In addition, the εTOC values in the Velenje samples are unrelated to mineralization type but are related to the degree of gelification (bacterial activity). The investigation of mineral occurrence is important since cleat-filling minerals reduce coal permeability, which in turn can trigger gas outbursts and inhibit gas extraction. | en |
dc.language.iso | English | en |
dc.publisher.name | Society for Sedimentary Geology | en |
dc.relation.ispartof | Journal of Sedimentary Research | en |
dc.relation.ispartofseries | /88 (2018) | en |
dc.title | Authigenic Mineralization in Low-rank Coals from the Velenje Basin, Slovenia | en |
dc.type | article | en |
dc.description.status | Published | en |
dc.type.QualityControl | Peer-reviewed | en |
dc.description.pagenumber | 201-213 | en |
dc.identifier.URL | https://pubs.geoscienceworld.org/sepm/jsedres/article-abstract/88/2/201/528172/authigenic-mineralization-in-low-rank-coals-from?redirectedFrom=fulltext | en |
dc.identifier.doi | 10.2110/jsr.2018.7 | en |
dc.description.obiettivoSpecifico | 7SR AMBIENTE – Servizi e ricerca per la società | en |
dc.description.journalType | JCR Journal | en |
dc.contributor.author | KanduČ, TjaŠa | en |
dc.contributor.author | VreČa, Polona | en |
dc.contributor.author | Gregorin, Špela | en |
dc.contributor.author | Vrabec, Mirijam | en |
dc.contributor.author | Vrabec, Marko | en |
dc.contributor.author | Grassa, Fausto | en |
dc.contributor.department | Department of Environmental Sciences, Joˇzef Stefan Institute, Jamova cesta 39, 1000 Ljubljana, Slovenia | en |
dc.contributor.department | Department of Environmental Sciences, Joˇzef Stefan Institute, Jamova cesta 39, 1000 Ljubljana, Slovenia | en |
dc.contributor.department | Moste 98a, 1218 Komenda | en |
dc.contributor.department | Department of Geology, Faculty of Natural Science and Engineering, University of Ljubljana, Aˇskerˇceva 12, 1000 Ljubljana, Slovenia | en |
dc.contributor.department | Department of Geology, Faculty of Natural Science and Engineering, University of Ljubljana, Privoz 11, 1000 Ljubljana, Slovenia | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Palermo, Palermo, Italia | en |
item.openairetype | article | - |
item.cerifentitytype | Publications | - |
item.languageiso639-1 | en | - |
item.grantfulltext | restricted | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | Department of Environmental Sciences, Jožef Stefan Institute, Jamova cesta 39, 1000 Ljubljana, Slovenia | - |
crisitem.author.dept | Department of Environmental Sciences, Joˇzef Stefan Institute, Jamova cesta 39, 1000 Ljubljana, Slovenia | - |
crisitem.author.dept | Moste 98a, 1218 Komenda | - |
crisitem.author.dept | Department of Geology, Faculty of Natural Science and Engineering, University of Ljubljana, Aˇskerˇceva 12, 1000 Ljubljana, Slovenia | - |
crisitem.author.dept | Department of Geology, Faculty of Natural Science and Engineering, University of Ljubljana, Privoz 11, 1000 Ljubljana, Slovenia | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Palermo, Palermo, Italia | - |
crisitem.author.orcid | 0000-0001-5920-0865 | - |
crisitem.author.orcid | 0000-0001-5043-792X | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
Appears in Collections: | Article published / in press |
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Kanduc et al 2018 JSR.pdf | 3.13 MB | Adobe PDF |
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