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Book Chapter

Late Miocene climatic cycles and their effect on sedimentation (west Hungary)

By
M. Korpás-Hódi
M. Korpás-Hódi
Geological Institute of Hungary, PO Box 106, H-1442 Budapest, Hungary
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E. Nagy
E. Nagy
Geological Institute of Hungary, PO Box 106, H-1442 Budapest, Hungary
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E. Nagy-Bodor
E. Nagy-Bodor
Geological Institute of Hungary, PO Box 106, H-1442 Budapest, Hungary
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K. Székvölgyi
K. Székvölgyi
Enricom Kft, H-1132 Budapest, Váci út 50, Hungary
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L. Ó. Kovács
L. Ó. Kovács
Hungarian Geological Survey, PO Box 17, H-1440 Budapest, Hungary
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Published:
January 01, 2000

Abstract

On the basis of sedimentological, welt-log, palaeontological and pedological analyses of three Upper Miocene borehole sections from Hungary, a cyclic change of sediments from deltaic and alluvial depositional systems is presented, which is considered to have been driven by a cyclical change of the climate (temperature and precipitation). A delayed but positive correlation between the sedimentary cyclicity linked with fourth order sedimentary sequences, and a long-term cyclicity in temperature have been observed. Within this cyclicity, higher-order sedimentary changes are seen. They are interpreted as fifth order sedimentary cycles related, in turn, to short-term climate phases. Within a long-term cycle, four short-term climate phases are defined as a result of changes in temperature and precipitation: semi-arid, turning from warm-temperate to cold-temperate; humid, coldtemperate; warm-temperate with a warming trend, with average but decreasing precipitation; and warm-temperate, with average precipitation.

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Contents

Geological Society, London, Special Publications

Climates: Past and Present

Malcolm B. Hart
Malcolm B. Hart
Department of Geological Sciences, University of Plymouth, UK
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Geological Society of London
Volume
181
ISBN electronic:
9781862394292
Publication date:
January 01, 2000

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