Seasonal study of calcite-water oxygen isotope fractionation at recent freshwater tufa sites in Hungary

IF 1 4区地球科学 Q4 GEOSCIENCES, MULTIDISCIPLINARY Geologica Carpathica Pub Date : 2022-11-10 DOI:10.31577/geolcarp.73.5.6

Barbara Bódai, G. Czuppon, I. Fórizs, S. Kele

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引用次数: 1

Abstract

: Recent fluvial tufa carbonates were investigated from the Szalajka Valley (Bükk Hungary) and Malom Valley (Balaton Uplands, Hungary) to (1) study the suitability of the published oxygen isotope-based palaeothermometers for tufa deposits, (2) find the most appropriate (closest to equilibrium) places downstream for temperature calculation. A good correlation was observed between 1000lnα and the temperature of the water from which the tufa precipitated close to the spring orifice in the Szalajka and Malom Valleys. Large differences between calculated and measured temperature values were seen in areas where the seasonal water temperature increased and decreased by several degrees during our studied period. The stable isotope composition of the measured Hungarian tufas represents intermediate values between the western and eastern parts of Europe, reflecting increasing continentality in climate from west to east. ples are reported relative to V-SMOW. The uncertainties of measurements were better than ±0.1 ‰ and ±1 ‰ for δ 18 O w and δD, respectively. Further details can be found in Czuppon et al. (2018).

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匈牙利新近淡水凝灰岩遗址方解石-水氧同位素分馏的季节性研究

：对Szalajka山谷（匈牙利比克）和Malom山谷（匈牙利巴拉顿高地）最近的河流状凝灰岩碳酸盐岩进行了调查，以（1）研究已发表的基于氧同位素的古温度计对凝灰岩矿床的适用性，（2）找到最适合（最接近平衡）的下游位置进行温度计算。在Szalajka和Malom山谷中，观察到1000lnα与凝灰岩在泉水口附近沉淀的水温之间存在良好的相关性。在我们的研究期间，季节性水温上升和下降了几度的地区的计算温度值和测量温度值之间存在很大差异。测得的匈牙利凝灰岩的稳定同位素组成代表了欧洲西部和东部之间的中间值，反映了从西到东气候的大陆性不断增强。ples是相对于V-SMOW报道的。δ18Ow和δD的测量不确定度分别优于±0.1‰和±1‰。更多细节可参见Czupon等人（2018）。

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来源期刊

Geologica Carpathica 地学-地球科学综合

CiteScore

2.40

自引率

23.10%

发文量

审稿时长

>12 weeks

期刊介绍： GEOLOGICA CARPATHICA covers a wide spectrum of geological disciplines including geodynamics, tectonics and structural geology, volcanology, stratigraphy, geochronology and isotopic geology, karstology, geochemistry, mineralogy, petrology, lithology and sedimentology, paleogeography, paleoecology, paleobiology and paleontology, paleomagnetism, magnetostratigraphy and other branches of applied geophysics, economic and environmental geology, experimental and theoretical geoscientific studies. Geologica Carpathica , with its 60 year old tradition, presents high-quality research papers devoted to all aspects not only of the Alpine-Carpathian-Balkanian geoscience but also with adjacent regions originated from the Mediterranean Tethys and its continental foreland. Geologica Carpathica is an Official Journal of the Carpathian-Balkan Geological Association.