This paper describes and analyzes the Upper Jurassic (Lower Kimmeridgian) succession exposed in the Zakrzówek Horst, located in the Kraków area. Three distinguished facies types FT 1-FT 3 comprise several limestone varieties: sponge-microbial, pelitic-bioclastic, and partly dolomitized detrital-bioclastic. Their sedimentary environments varied from relatively deeper, attaining storm-wave base, to more shallower, probably close to normal-wave base. Characteristic features of limestones are changes in contents of CaCO₃ and insoluble residuum as well as porosity values in vertical transitional zones between facies types. The investigated facies types differ in sediment porosity dependent on development of limestones and its susceptibility to mechanical compaction during the early diagenesis. The studied limestones show high CaCO₃ contents and minor insoluble residuum contents comprising quartz, chalcedony and clay minerals. No distinct variability occurs in contents of magnesium, silica, alumina and iron accumulated in clay minerals, iron oxides and oxyhydroxides, as well as in the amounts of amorphous silica. Early diagenetic dolomites, which occur locally within the limestones, were unrelated to fracture systems as possible pathways responsible for transfer of solutions rich in Mg²⁺ ions. The possible source of Mg²⁺ ions might have been the pore solutions, which migrated from compacted basinal bedded facies towards reef facies or the grain-supported bedded facies developed in the adjacent areas. Microscopic studies revealed dedolomitization at the surfaces and in the inner parts of dolomite crystals. In many cases, dolomite crystals were replaced by calcite forming pseudomorphs.

中文翻译：

---

根据矿物学，地球化学和沉积学研究，上侏罗统层状石灰岩和早成岩的白云岩化石灰岩；波兰克拉科夫地区

本文描述并分析了位于克拉科夫地区的扎克祖维克霍斯特地区的上侏罗世（下基默尼第纪）演替。FT 1-FT 3的三种不同的相类型包括几种石灰岩变种：海绵微生物，胶粉质生物碎屑和部分白云石化碎屑生物碎屑。它们的沉积环境从相对较深的到达风暴波的基础到较浅的可能接近法向波的基础。石灰石的特征是CaCO ₃含量的变化相类型之间的垂直过渡带中的不溶残渣以及孔隙度值。根据石灰岩的发育及其在早期成岩作用中对机械压实的敏感性，所研究的相类型在沉积物孔隙度方面有所不同。所研究的石灰石显示出高的CaCO ₃含量和少量的不溶残渣含量，包括石英，玉髓和粘土矿物。在粘土矿物，氧化铁和羟基氧化物中所积累的镁，二氧化硅，氧化铝和铁的含量以及无定形二氧化硅的含量均未发生明显的变化。早期成岩白云岩发生在石灰岩中，与裂缝系统无关，因为它们可能是富集Mg ²⁺的溶液传递的可能途径。离子。Mg ²⁺离子的可能来源可能是孔隙溶液，它从压实的盆地层状相向礁岩相或在邻近区域发育的颗粒支撑层状相迁移。显微研究表明，白云石晶体的表面和内部都具有去铁石化作用。在许多情况下，白云石晶体被方解石形成的假晶形所取代。