Floods in 1997 and 2010 exposed the Frýdek and Frýdlant formations of the Subsilesian Unit in the Ostravice River bed near Frýdek-Místek. In the sedimentary sequence of upper Campanian to Maastrichtian marls and paraconglomerates, clasts of strongly altered basic volcanic rock were found, accompanied by carbonate concretions and layers. Rare apatite, biotite, and a Cr-rich spinel subgroup mineral are the only relatively well-preserved primary minerals in the clasts. The matrix contains buddingtonite, albite, sanidine, kaolinite, illite-muscovite, a mineral of the smectite group, and possibly also a mixed structure mineral of the chlorite-smectite type. Laths of buddingtonite, identified by powder X-ray diffraction and wavelength-dispersive X-ray spectrometry, are not homogenous. Their compositions range from Bd₄₁ to Bd₅₉ molar component, with Kfs ranging between 26 and 35 mol%, Nafs between 5 and 27 mol%, and Ca-feldspar between 1 and 4 mol%. The matrix is irregularly dolomitized. Carbonates are also present in pseudomorphs after idiomorphic olivine and in fill of amygdaloidal cavities. These carbonates reveal complicated alteration rock history, having cores of magnesite passing into almost pure siderite outer parts. Calcite is always the youngest and most homogenous carbonate, probably connected with a different geological event. Accompanying carbonate concretions are composed of three dolomitic phases with quartz, calcite, and muscovite. We can conclude that buddingtonite originates in alteration of primary feldspar and/or volcanic glass during the catagenetic breakdown of kerogen in the sediment, surrounded by clayey sediments rich in decomposing organic matter. Volcanic clasts have similar texture and supposed pre-alteration phase composition as the rocks of teschenite association, namely monchiquites to picrites. However, the source of volcanic clast within the sediments remains unclear.

1997 年和 2010 年的洪水暴露了 Frýdek-Místek 附近 Ostravice 河床的 Subsilesian 单元的 Frýdek 和 Frýdlant 地层。在上坎帕阶至马斯特里赫特泥灰岩和副砾岩的沉积序列中，发现了强烈蚀变的基性火山岩碎屑，并伴有碳酸盐结核和层。稀有的磷灰石、黑云母和富含铬的尖晶石亚群矿物是碎屑中唯一保存相对完好的原生矿物。基质包含绿云石、钠长石、山宁石、高岭石、伊利石-白云母、绿土族矿物，也可能是绿泥石-绿土类型的混合结构矿物。通过粉末 X 射线衍射和波长色散 X 射线光谱法鉴定的布丁石板条不均匀。它们的成分范围从 Bd ₄₁至_59房摩尔组分，Kfs 介于 26 和 35 mol% 之间，Nafs 介于 5 和 27 mol% 之间，钙长石介于 1 和 4 mol% 之间。矩阵是不规则的白云石化。碳酸盐也存在于自形橄榄石之后的假形体中并填充杏仁体腔。这些碳酸盐揭示了复杂的蚀变岩历史，菱镁矿的核心进入了几乎纯菱铁矿的外部。方解石始终是最年轻、最均匀的碳酸盐，可能与不同的地质事件有关。伴随的碳酸盐结核由石英、方解石和白云母三个白云质相组成。我们可以得出结论，buddingtonite 起源于沉积物中干酪根分解分解过程中原生长石和/或火山玻璃的改变，周围是富含分解有机物的粘土沉积物。火山碎屑具有与 teschenite 组合岩石相似的质地和假定的预蚀相组成，即 monchiquites 到 picrites。然而，沉积物中火山碎屑的来源仍不清楚。