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Academic & Professional Books  Palaeontology  Palaeobotany

La Flore Fossile du Bassin Houiller de Saint-Etienne [The Fossil Flora of the Bassin Houiller of Saint-Etienne]

Monograph
By: Jeanne Doubinger(Author), Pierre Vetter(Author), Jean Langiaux(Author), Jean Galtier(Author), Jean Broutin(Author)
355 pages, 395 b/w photos and b/w line drawings; 1 b/w fold-out map
La Flore Fossile du Bassin Houiller de Saint-Etienne [The Fossil Flora of the Bassin Houiller of Saint-Etienne]
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  • La Flore Fossile du Bassin Houiller de Saint-Etienne [The Fossil Flora of the Bassin Houiller of Saint-Etienne] ISBN: 9782856532188 Hardback Oct 1995 Usually dispatched within 1-2 weeks
    £69.99
    #61163
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About this book

Language: French with bilingual abstract in English and French, and extended abstract in English

A revision of the Stephanian (Upper Carboniferous) flora from Saint-Etienne is presented. This work is based on re-investigation of about eight thousand specimens of macroflora. Following a detailed historical survey of the geology of the basin, this taxonomic study concerns the macroflora preserved as compressions and permineralizations (97 genera and 252 species) and a study of the microflora. A quantitative analysis based on nearly two thousand compression specimens establishes that the Rive de Gier (lowermost) flora of the basin is distinct from all the others by the relative abundance of arborescent lycopsids which abruptly decrease and disappear in more recent strata. Sphenopsids and cordaites are a regular element of the flora whilst tree-ferns are the dominant element before the medullosan pteridosperms. The palynological analysis confirms the contrast between the assemblage from the Rive de Gier Formation and the overlying strata, suggesting the presence of only two main palynostratigraphic units. Finally, considering that no other contemporaneous deposit has yielded a richer flora, we propose that the whole upper Formation of Saint-Etienne (i.e. overlying the Rive de Gier Formation) should be used as a biostratigraphic reference for the unnamed upper stage of the Stephanian series. The name ‘Forezian’ is proposed for this stage which would replace the previous "Stephanian B-C".

Summary in French:
Une révision de la flore du Stéphanien (Carbonifère supérieur) de Saint-Étienne est présentée. Elle est fondée sur le ré-examen d'environ huit mille spécimens de macroflore en compression ou perminéralisés. Un historique détaillé des études sur la géologie du bassin précède l'étude taxonomique qui concerne la macroflore (97 genres et 252 espèces) ainsi qu'une description de la microflore. Une analyse quantitative a eté réalisée sur près de deux mille spécimens en compression. Il est démontré que la flore de la Formation de Rive de Gier (la plus ancienne dans le bassin) est distincte de toutes les autres par l'abondance relative des lycophytes, lesquelles déclinent brutalement et disparaissent dans les niveaux sus-jacents. Les sphénophytes et les cordaites sont un composant régulier de la flore alors que les fougères arborescentes en sont l'élément dominant devant les Ptéridospermales Medullosaceae. L'analyse palynologique confirme le contraste entre la Formation de Rive de Gier et les niveaux sus-jacents suggérant la présence dans le bassin de deux unités palynostratigraphiques. Finalement, compte-tenu du fait qu`aucun autre niveau contemporain n`a livré une flore aussi riche, nous proposons que la Formation supérieure de Saint-Étienne (au dessus de Rive de Gier) soit utilisée comme référence biostratigraphique pour l'étage supérieur (jusqu'ici resté sans nom) de la série stéphanienne. Le nom de "Forézien" est proposé pour cet étage qui remplace le precédent "Stéphanien B-C".

Customer Reviews

Monograph
By: Jeanne Doubinger(Author), Pierre Vetter(Author), Jean Langiaux(Author), Jean Galtier(Author), Jean Broutin(Author)
355 pages, 395 b/w photos and b/w line drawings; 1 b/w fold-out map
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