Reconstruction of the paleoenvironment of the lignite deposit at Pontokomi (Sector 6), Ptolemaida Basin, Greece, based on its maceral composition

Antoniadis, PA; Abatzi, S-M; Mavridou, E; Gentzis, T

dc.contributor.author	Antoniadis, PA	en
dc.contributor.author	Abatzi, S-M	en
dc.contributor.author	Mavridou, E	en
dc.contributor.author	Gentzis, T	en
dc.date.accessioned	2014-03-01T01:23:00Z
dc.date.available	2014-03-01T01:23:00Z
dc.date.issued	2005	en
dc.identifier.issn	0090-8312	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/16766
dc.subject	Greece	en
dc.subject	Paleo-environment	en
dc.subject	Petrography	en
dc.subject	Pontokomi lignite	en
dc.subject	Ptolemaida basin	en
dc.subject.classification	Energy & Fuels	en
dc.subject.classification	Engineering, Chemical	en
dc.subject.other	Carbonates	en
dc.subject.other	Catchments	en
dc.subject.other	Clay	en
dc.subject.other	Deposits	en
dc.subject.other	Nutrition	en
dc.subject.other	Peat	en
dc.subject.other	Petrography	en
dc.subject.other	Tissue	en
dc.subject.other	Greece	en
dc.subject.other	Paleo-environment	en
dc.subject.other	Pontokomi lignite	en
dc.subject.other	Ptolemaida basin	en
dc.subject.other	Lignite	en
dc.title	Reconstruction of the paleoenvironment of the lignite deposit at Pontokomi (Sector 6), Ptolemaida Basin, Greece, based on its maceral composition	en
heal.type	journalArticle	en
heal.identifier.primary	10.1080/009083190518998	en
heal.identifier.secondary	http://dx.doi.org/10.1080/009083190518998	en
heal.language	English	en
heal.publicationDate	2005	en
heal.abstract	The lignite deposit at Pontokomi (Sector 6) in the Ptolemaida Basin of Greece was studied petrographically so that the conditions that prevailed in the paleo-environment could be analyzed. The above deposit is situated in the northwestern part of the broader basin of Ptolemaida in Macedonia, Greece. It consists of alternating beds of lignite and interbedded strata. The interburden is made of clay marls, occasionally enriched in sand. Thirty-seven samples of lignite were taken for analysis from two representative coreholes (Delta 3 and Delta 5) located in the central part of the lignite deposit. The study showed that macerals of the huminite group were dominant, followed by inertinite macerals. Liptinites made up a small percentage of the total population. Densinite, attrinite, eu-ulminite, corpohuminite and detrogelinite were the most abundant huminite group macerals, respectively. Inertodetrinite and fusinite were the dominant inertinite macerals, while sporinite and resinite were the predominant litpinite macerals. Mineral matter consisted mainly of clays, carbonates and pyrite. Detailed maceral analysis allowed us to obtain indices related to the wetness in the peat swamp (GI), degree of vegetation growth (VI), level of water table (GWI), and preservation of plant tissues (TPI). By comparing ratios of these indices and correlating them to ternary diagrams developed by different authors, we were able to obtain valuable information as to the conditions that dominated in the original peat swamp. The ratio of VI/GWI provided data on the hydrology and nutrient supply in the peat-forming environment, whereas the ratio of TPI/GI was used to interpret the paleo-environment in relation to the water table. Evaluation of the data showed that the environment that hosted the parent flora was limnic (open water) dominated by grasses and sedges under rheotrophic to mesotrophic nutrient supply conditions.	en
heal.publisher	TAYLOR & FRANCIS INC	en
heal.journalName	Energy Sources	en
dc.identifier.doi	10.1080/009083190518998	en
dc.identifier.isi	ISI:000229409900004	en
dc.identifier.volume	27	en
dc.identifier.issue	8	en
dc.identifier.spage	687	en
dc.identifier.epage	708	en