In situ U–Pb analyses were performed on SEM-BSE, SEM-CL and Raman mapped zircons from the Variscan granitoids exposed in the Mórágy pluton, Hungary. However, the routinely used LA-ICP-MS could result only in reliable age constraints if the system was not overprinted by multiple geological processes that affect the isotope system of zircons. To overcome the ambiguities the new zircon U–Pb age data were evaluated carefully, first using simple statistical models, then a zircon internal texture related complex approach was applied. This method demonstrates that the U–Pb age in overprinted systems correlates with the structural state; the worse structural state zones showing younger, but still concordant ages. Individual zircon internal texture and structural state based evaluation made it possible to select the least overprinted age components of the system and identify five steps in the evolution of the studied intrusive rock. The two melts (granitoid and mafic) passed the zircon U–Pb isotope closure temperature ~ 355 ± 3 Ma ago during their cooling. Crystallization of the two mingled magmas overarched the 350–340 Ma period, including two intense zircon crystallization peaks (~ 347 Ma, ~ 333 Ma). The cessation of melt crystallization (~ 650 °C) happened ~ 334 ± 4 Ma ago, as indicated by the age of the “normal and long prismatic” zircons. Further confirming this statement, they are embedding in their rims the eutectic mineral assemblage. A Cretaceous post-magmatic event was identified according to slightly discordant U–Pb ages for the Mórágy pluton.

原位 U-Pb 分析是在 SEM-BSE、SEM-CL 和拉曼映射的锆石上进行的，这些锆石来自暴露在匈牙利 Mórágy 深成岩体中的 Variscan 花岗岩类。然而，如果系统没有被影响锆石同位素系统的多种地质过程套印，则常规使用的 LA-ICP-MS 只能产生可靠的年龄限制。为了克服模糊性，对新的锆石 U-Pb 年龄数据进行了仔细评估，首先使用简单的统计模型，然后应用了与锆石内部结构相关的复杂方法。该方法表明叠印系统中的 U-Pb 年龄与结构状态相关；结构状态较差的区域显示出更年轻但仍然一致的年龄。基于个体锆石内部结构和结构状态的评估使得选择系统中叠印最少的年龄成分并确定所研究侵入岩演化的五个步骤成为可能。两种熔体（花岗岩和镁铁质）在冷却期间通过了锆石 U-Pb 同位素闭合温度 ~ 355 ± 3 Ma。两种混合岩浆的结晶贯穿 350-340 Ma 时期，包括两个强烈的锆石结晶峰（~ 347 Ma，~ 333 Ma）。熔融结晶停止（~ 650 °C）发生在~ 334 ± 4 Ma 前，正如“正常和长棱柱”锆石的年龄所表明的那样。进一步证实了这一说法，他们在他们的边缘嵌入了共晶矿物组合。根据 Mórágy 深成岩略微不一致的 U-Pb 年龄，确定了白垩纪后岩浆事件。