Palaeoenvironmental conditions of the Mavropigi lignites, Ptolemais Basin, Greece: A petrological study

Antoniadis, P; Mavridou, E; Papazisimou, S; Christanis, K; Gentzis, T

dc.contributor.author	Antoniadis, P	en
dc.contributor.author	Mavridou, E	en
dc.contributor.author	Papazisimou, S	en
dc.contributor.author	Christanis, K	en
dc.contributor.author	Gentzis, T	en
dc.date.accessioned	2014-03-01T01:24:50Z
dc.date.available	2014-03-01T01:24:50Z
dc.date.issued	2006	en
dc.identifier.issn	1556-7036	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/17457
dc.subject	Facies diagrams	en
dc.subject	Greece	en
dc.subject	Lignite	en
dc.subject	Macerals	en
dc.subject	Organic petrography	en
dc.subject.classification	Energy & Fuels	en
dc.subject.classification	Engineering, Chemical	en
dc.subject.classification	Environmental Sciences	en
dc.subject.other	Composition	en
dc.subject.other	Microscopic examination	en
dc.subject.other	Peat	en
dc.subject.other	Petrology	en
dc.subject.other	Plants (botany)	en
dc.subject.other	Regional planning	en
dc.subject.other	Facies diagrams	en
dc.subject.other	Greece	en
dc.subject.other	Macerals	en
dc.subject.other	Organic petrography	en
dc.subject.other	Lignite	en
dc.title	Palaeoenvironmental conditions of the Mavropigi lignites, Ptolemais Basin, Greece: A petrological study	en
heal.type	journalArticle	en
heal.identifier.primary	10.1080/009083190913557	en
heal.identifier.secondary	http://dx.doi.org/10.1080/009083190913557	en
heal.language	English	en
heal.publicationDate	2006	en
heal.abstract	The aim of this study is to interpret the palaeoenvironmental conditions established during the formation of several lignite seams at the Mavropigi deposit, Ptolemais, Greece (corehole MAK-48). In nine representative lignite samples, ash contents, as well as the contents of the elements C, H, N, O, and S were determined. Polished block sections from the same samples were examined under the microscope. The ash contents (750 degrees C) of the studied lignite seams range between 10-29% (on dry basis). The contents of C, H, N, and O display values between 36-55%, 2.4-4.6%, 0.7-2%, and 21-37.5%, respectively, while S contents do not exceed 1.4%. Huminite is the prevailing maceral group (87-95%). All the samples, except No. 35, display a distinct prevalence in detrohuminite maceral subgroup (up to 69 vol%, mmf). Liptinite and inertinite maceral groups show low contents, which do not exceed 9% and 7%, respectively. The Mavropigi lignites are medium to low grade coals and can be regarded as peat to lignite in terms of thermal maturity. The studied lignite seams formed in fens, possibly from herbaceous plants under limnotelmatic regime. During peat deposition, conditions were very moist and intense reducing with increased bacterial activity. The ratio of plant growth and peat accumulation versus rise of water table due to the subsidence rate was not well balanced. As a result, the petrographical composition of the Mavropigi lignites is related either to a long residence time of the organic matter in the acrotelm or to a herbaceous vegetation origin.	en
heal.publisher	TAYLOR & FRANCIS INC	en
heal.journalName	Energy Sources, Part A: Recovery, Utilization and Environmental Effects	en
dc.identifier.doi	10.1080/009083190913557	en
dc.identifier.isi	ISI:000237069700002	en
dc.identifier.volume	28	en
dc.identifier.issue	4	en
dc.identifier.spage	311	en
dc.identifier.epage	327	en