TY  - JOUR
AU  - Szabó, Péter
AU  - Kocsis, László
AU  - Vennemann, T
AU  - Pandolfi, L
AU  - Kovács, János
AU  - Martinetto, E
AU  - Demény, Attila
TI  - Pliocene–Early Pleistocene climatic trends in the Italian Peninsula based on stable oxygen and carbon isotope compositions of rhinoceros and gomphothere tooth enamel
JF  - QUATERNARY SCIENCE REVIEWS
J2  - QUATERN SCI REV
VL  - 157
PY  - 2017
SP  - 52
EP  - 65
PG  - 14
SN  - 0277-3791
DO  - 10.1016/j.quascirev.2016.11.003
UR  - https://m2.mtmt.hu/api/publication/3161011
ID  - 3161011
AB  - The Pliocene and Early Pleistocene (5.2–1 Ma) palaeoclimate for localities in Italy is evaluated using stable carbon and oxygen isotope compositions of tooth enamel of fossil specimens from Rhinocerotidae (Stephanorhinus sp.) and Gomphotheriidae (Anancus sp.) taxa. Carbon isotope composition was measured in the structural carbonate (δ13C), while oxygen isotope values were determined both in the structural carbonate (δ18OCO3) and the phosphate (δ18OPO4) of bioapatite. The δ13CCO3 values indicate that the taxa were grazers-browsers of a pure C3 vegetation. Low δ13CCO3 values for Central and North Italy indicate a humid climate with woodlands and forest cover in the Pliocene. For northern localities the δ13C values increase between MN16a and MNQ16b biozones most likely linked to the Northern Hemisphere Glaciation at 2.7 Ma after the “Mid-Pliocene Warm Period”. For Central Italy the values have a wide range with a long term increasing trend in the Early Pleistocene, indicating more arid climate and/or more open vegetation. Overall, the δ18OPO4 values in Central Italy change together with the δ13CCO3 values and are taken to reflect the warmer/wetter interglacials and cooler/more arid glacial phases. The δ18OPO4 values in North Italy are lower than those in Central Italy and show no clear temporal trend. One explanation for the low values especially in MN14-15 biozone is that these δ18OPO4 values do not reflect entirely the isotopic composition of local precipitation but river waters from the Alps with 18O-depleted isotopic compositions or a N-S directed rain-shadow effect on the precipitation. In general the new isotope data agree well with palaeoclimate reconstructions based on palynological and other proxies. © 2016 Elsevier Ltd
LA  - English
DB  - MTMT
ER  - 

TY  - JOUR
AU  - Fourel, F
AU  - Martineau, F
AU  - Tóth, Emőke
AU  - Görög, Ágnes
AU  - Escarguel, G
AU  - Lécuyer, C
TI  - Carbon and oxygen isotope variability among foraminifera and ostracod carbonated shells
JF  - ANNALES UNIVERSITATIS MARIAE CURIE-SKLODOWSKA SECTIO AAA PHYSICA
J2  - ANN UNIV MARIAE CURIE-SKLODOWSKA AAA PHYSICA
VL  - 70
PY  - 2016
SP  - 133
EP  - 156
PG  - 24
SN  - 0137-6861
UR  - https://m2.mtmt.hu/api/publication/3286861
ID  - 3286861
LA  - English
DB  - MTMT
ER  - 

TY  - JOUR
AU  - Kovács, János
AU  - Szabó, Péter
AU  - Kocsis, László
AU  - Vennemann, T
AU  - Sabol, M
AU  - Gasparik, Mihály
AU  - Virág, Attila
TI  - Pliocene and Early Pleistocene paleoenvironmental conditions in the Pannonian Basin (Hungary, Slovakia): Stable isotope analyses of fossil proboscidean and perissodactyl teeth
JF  - PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
J2  - PALAEOGEOGR PALAEOCL
VL  - 440
PY  - 2015
SP  - 455
EP  - 466
PG  - 12
SN  - 0031-0182
DO  - 10.1016/j.palaeo.2015.09.019
UR  - https://m2.mtmt.hu/api/publication/2958148
ID  - 2958148
N1  - Megjegyzés-25243093
Hiányzó Jelleg: 'JOUR\n\nArticle'
Admin megjegyzés-25243093
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AB  - Stable carbon and oxygen isotope values of structural carbonate (δ13C, δ18OCO3) and phosphate (δ18OPO4) in bio-apatite were measured for fossil mammalian teeth from Slovakia and Hungary. Oxygen isotope compositions of enamel provide new quantitative records of the Pliocene and Early Pleistocene paleoclimate in the Pannonian Basin (PB). The δ18OPO4 values were used to study the temporal variations in the oxygen isotope compositions of precipitation and the changes in temperature over the PB. The new O-isotope data suggest that surface air temperatures between 4.5 and 2.0Ma were 1 to 4°C warmer with about 700mm/yr more precipitation compared to the present. C-isotope analyses of samples from proboscideans (Anancus sp., Mammut sp.) and perissodactyls (Stephanorhinus sp., Tapirus sp.) from the Pliocene (MN15-MN16) and Early Pleistocene (MN17) suggest that they were primarily C3 browsers. The mean δ13C value is high at 4.5 to 3.7Ma (MN14-15) during the Pliocene Warm Period and decreases at about 3.5 to 3.0Ma (MN16; mid-Pliocene Warm Period), with the onset of more humid conditions in Europe. The δ13C values return to higher values from 2.5Ma onwards (MN17), most likely reflecting more arid conditions as a consequence of the onset of the Northern Hemisphere glaciation. © 2015 Elsevier B.V.
LA  - English
DB  - MTMT
ER  -