Distinct stages of deformation and fluid flow-related diagenetic alterations are recorded in Lower Miocene sandstone and conglomerate of the Pannonian Basin, Central Europe. Multiple generations of structural elements (deformation bands, calcite dominoes and veins) as well as host rocks were investigated using petrographical, elemental and stable isotope geochemical methods together with fluid inclusion petrography and microthermometry. The integration of acquired structural and diagenetic data into a subsidence model constrains the spatial and temporal evolution of deformation mechanisms and diagenetic processes. The six investigated sites represent central and marginal areas during both the pre-rift and syn-rift phases of basin evolution. The elements of pre-rift phases were preserved at the eastern margin, where eogenetic calcite precipitated in the host rocks and in the early types of deformation bands. Their δ¹⁸OPDB isotope values from −4.3‰ to −1.9‰ paired with δ¹³C_PDB isotope values from −3.8‰ to 1.8‰ refer to precipitation from connate marine and mixed marine and meteoric pore water. The syn-rift phases are represented by eogenetic calcite and start of shallow mesogenetic diagenetic alterations in marginal position as well as in the basin centre. The δ¹⁸OPDB and δ¹³C_PDB isotope ratios in these calcites yielded values from −15.2‰ to −5.7‰ and from to −18.5‰ to -–1.6‰, respectively. The gradual depletion in heavy isotopes shows positive covariance as the deformation progressed in time. This trend is attributed to an increasing proportion of deeply circulating meteoric fluid. The sporadic fluid inclusion data confirm meteoric fluid contribution to certain carbonate cement phases. The distinguished calcite generations in pre-rift and syn-rift structural elements and host rocks were mainly related to the phases of intense subsidence that, together with the increased rift-related heat flow, warmed up the circulating fluids. The isotope values deviating from the general trend allow the recognition of local source of light carbon contribution to basin-wide fluid-flow evolution, and cannot be tied to the switch in tectonic settings from pre-rift compression to syn-rift extension.

在中欧Pannonian盆地的下中新世砂岩和砾岩中记录了变形和与流体流动相关的成岩作用的不同阶段。使用岩相，元素和稳定同位素地球化学方法以及流体包裹体岩相学和显微热分析法研究了多代结构元素（变形带，方解石多米诺骨和脉）以及基质岩。将获取的结构和成岩数据整合到沉陷模型中会限制变形机制和成岩过程的时空演化。六个调查点了前裂谷和无论是在中央和边缘地区的SYN盆地演化的快裂阶段。裂谷前阶段的元素被保存在东部边缘，那里的生方解石沉淀在宿主岩和变形带的早期类型中。其δ ¹⁸从OPDB同位素值-4.3‰至-1.9‰成对用δ ^13个C ^ _PDB从-3.8‰至1.8‰指从原生水海洋和混合的海洋和大气孔隙水至沉淀同位素值。所述顺式-rift相通过eogenetic方解石表示，并且在边缘的位置，以及在盆地中心开始浅mesogenetic成岩改变的。的δ ¹⁸ OPDB和δ ¹³ C ^ _PDB这些方解石中的同位素比值分别为-15.2‰至-5.7‰和-18.5‰至-1.6‰。随着变形的进展，重同位素中的逐渐耗尽显示出正协方差。这种趋势归因于深循环流星流体的比例增加。零星的流体包裹体数据证实了大气流体对某些碳酸盐水泥相的贡献。预裂和合成中的方解石世代裂谷的构造元素和基质岩主要与强烈沉降的阶段有关，这些阶段再加上与裂谷有关的热流增加，使循环流体升温。同位素值从总的趋势偏离允许以全流域流体流动进化光碳贡献本地源的识别，并且不能从预裂痕压缩到绑在开关中构造背景顺-rift扩展。