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The Bag Tephra, a widespread tephrochronological marker in Middle Europe: chemical and mineralogical investigations |
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| Authors: | A Pouclet E Horvath G Gabris E Juvigné |
| Institution: | UMR 6530, Faculty of Science, University of Orléans, B.P. 6759, F-45067 Orléans, Cedex 2, France e-mail: andre.pouclet@univ-orleans.fr, FR Department of Physical Geography, University of E?tv?s Lorand, Ludovieka tér. 2, H-1083 Budapest, Hungary, HU Département Géographie physique et du Quaternaire, Université Sart Tilman, B-4000 Liège, Belgium, BE |
| Abstract: | The Bag Tephra is a widespread tephra layer interbedded in Quaternary loess deposits along the Danubian valley of Hungary and Slovakia. Its age is poorly defined between 788 and 380 ka B.P. The glass and mineral composition – micropumice clasts of phono-tephrite and blocky shards of tephri-phonolite associated with two kinds of clinopyroxene, fassaitic diopside, and salite – is very distinctive. This tephra could be used as a chronological marker, as soon as its age is refined. The probable origin is the middle Italian volcanic area. Received: 3 November 1998 / Accepted: 18 January 1999 |
| Keywords: | Tephrochronological marker Quaternary Loess Hungary |
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