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  3. La formation de Montfleury près de Genève: Etude palynologique et sédimentologique d'une séquence du Pleistocène moyen
 

La formation de Montfleury près de Genève: Etude palynologique et sédimentologique d'une séquence du Pleistocène moyen

Montfleury formation near Geneva: Palynology and sedimentology of a Mid-Pleistocene sequence

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BORIS DOI
10.7892/boris.119246
Official URL
https://www.e-periodica.ch/digbib/view?pid=egh-001:1995:88::618
Publisher DOI
10.5169/seals-167689
Description
In the Geneva basin a 127.3 m deep coring was carried out in the plain of Montfleury in order to get information about hydrogeology, lithology and chronology of the quaternary deposits. Palynostratigraphic studies on the so-called `'Marnes a lignite'' underlying the `'Alluvion ancienne'' revealed two interglacial sequences (Montfleury and Confignon). The Montfleury sequence belongs to the penultimate interglacial (Holstein sensu Welten 1988), the Confignon sequence must be assigned to a preceding interglacial. The chronostratigraphic position of the `'Alluvion ancienne'', which until now was believed to correspond to the Early-Wurm, must be revised.
Litho- und palynostratigraphische Untersuchungen an den unter der «Alluvion ancienne» gelegenen «Marnes à lignite» des Genfer Beckens (Profil Montfleury bei Vernier) erbrachten den Nachweis von zwei interglazialen Sequenzen (Montfleury und Confignon). Die Sequenz Montfleury wird dem Komplex des vorletzten Interglazials (Holstein sensu Welten. 1988) zugeordnet, die Sequenz Confignon hingegen einer vorangehenden Warmzeit.
Die chronostratigraphische Einstufung der «Alluvion ancienne» des Genfer Beckens, die bisher dem Frühwürm zugeordnet wurde, wird erneut zu überprüfen sein.
Date of Publication
1995
Publication Type
Article
Subject(s)
500 Science > 580 Plants (Botany)
Language(s)
fr
Contributor(s)
Wegmüller, Samuel
Emeriti, Phil.-nat. Fakultät
Amberger, G
Vernet, JP
Additional Credits
Emeriti, Phil.-nat. Fakultät
Series
Eclogae Geologicae Helvetiae
Publisher
Birkhäuser
ISSN
0012-9402
Access(Rights)
restricted
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