High-resolution palynological analysis in late early-middle Miocene core from the Pannonian Basin, Hungary: climatic changes, astronomical forcing and eustatic fluctuations in the Central Paratethys

• Published in: Palaeogeography, Palaeoclimatology, Palaeoecology
• Main Authors: Jiménez-Moreno, Gonzalo, Rodríguez-Tovar, Francisco J., Pardo-Igúzquiza, Eulogio, Fauquette, Séverine, Suc, Jean-Pierre, Müller, Pál
• Other Authors: PaleoEnvironnements et PaleobioSphere (PEPS), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Departamento de Estratigrafıa y Paleontologıa, Universidad de Granada = University of Granada (UGR), Departamento de Estratigrafia y paleontologia, Université de grenade, Departamento de Geodina´mica, Departamento de Geodinámica, Institut des Sciences de l'Evolution de Montpellier (UMR ISEM), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-École Pratique des Hautes Études (EPHE), Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Montpellier (UM)-Institut de recherche pour le développement IRD : UR226-Centre National de la Recherche Scientifique (CNRS), Hungarian Geological Institute Budapest
• Format: Article in Journal/Newspaper
• Language: English
• Published: HAL CCSD 2005
• Subjects: Palynology; Climatic quantification; Cyclostratigraphy; Eustatic changes; Early-middle Miocene; Pannonian Basin; [SDU.STU.PG]Sciences of the Universe [physics]/Earth Sciences/Paleontology; [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology; [SDE.MCG]Environmental Sciences/Global Changes; [SDU.STU.ST]Sciences of the Universe [physics]/Earth Sciences/Stratigraphy; Antarc*; Antarctic; Ice Sheet
• Online Access: https://hal.science/hal-00180450; https://doi.org/10.1016/j.palaeo.2004.10.007

International audience High-resolution palynological analysis in the Karpatian-Sarmatian (late early-middle Miocene) interval of the borehole Tengelic 2 (Hungary) reveals the existence of a forest organized in altitudinal belts developed in a subtropical-warm temperate humid climate, reflecting the so-called Miocene climatic optimum. Pollen changes from the late early Miocene to the middle Miocene are related to climatic variations. Values of mean annual temperature (Ta) between 18 and 20 8C and mean annual precipitation (Pa) between 1200 and 1400 mm have been estimated (bclimatic amplitude methodQ) for the Badenian. Decreasing during Late Badenian and Sarmatian, Ta and Pa about 16 8C and 1100 mm, have been interpreted as a climatic cooling correlated with the bMonterey cooling eventQ and related to the development of the East Antarctic Ice Sheet (EAIS). Alternation in pollen taxa (thermophilous vs. altitudinal elements) reflects the astronomical forcing on temperature and precipitation and then on vegetation, where obliquity and eccentricity cycles dominated. Eustatic changes determine Pinus and Pinaceae and dinocyst variations