Peritidal carbonates of the Csukma Formation (Csukma Dolomite Member) in the Villány Hills, SW Hungary, were investigated to determine the nature of the dolomitization and recrystallization processes that affected these rocks during their complex tectonic evolution, and to evaluate if clumped isotope data preserved signals from the original dolomitization event or are indicative of the later recrystallization processes. Sedimentary and petrographic features, as well as geochemical characteristics integrated with the tectonic evolution of the area indicate that dolomitization likely occurred penecontemporaneously via geothermal convection of normal-to-slightly modified seawater in a near-surface to shallow burial setting. This was followed by partial recrystallization of the dolomites in an intermediate burial setting with low water-to-rock ratios. Results of this study suggest that the clumped isotope temperatures of dolomites, partially recrystallized via dissolution–re-precipitation, may provide a minimum estimate of the temperature of recrystallization. However, caution has to be taken when interpreting the thermal history and fluid evolution of successions that were affected by significant recrystallization, because the clumped isotope temperatures and the calculated fluid compositions might inaccurately represent the diagenetic conditions.

研究了匈牙利西南部VillányHills Csukma组（Csukma白云岩成员）的碳酸盐岩碳酸盐岩，以确定在复杂的构造演化过程中影响这些岩石的白云石化和再结晶过程的性质，并评估聚集的同位素数据是否保留了信号最初的白云石化事件引起的或指示以后的重结晶过程。该地区的沉积，岩石学特征以及地球化学特征与该地区的构造演化相结合，表明白云石化可能是通过在近地表至浅埋环境中对正常至略有修饰的海水进行地热对流而同时发生的。随后在中等埋葬环境中以较低的水岩石比对白云岩进行部分重结晶。这项研究的结果表明，通过溶解-再沉淀而部分重结晶的白云岩的聚集同位素温度可能提供了重结晶温度的最小估计值。但是，在解释受明显重结晶影响的演替过程的热历史和流体演化时，必须格外小心，因为团聚的同位素温度和计算的流体成分可能不准确地代表了成岩条件。