A Barremian hemipelagic succession from Ra Stua in the Dolomites (Southern Alps, northern Italy) is investigated stratigraphically. A short Barremian section was studied with regard to biostratigrapy, lithology, chemostratigraphy and geophysics and subsequently compared to known isochronic palaeomagnetic data and sea levels changes. The results are linked to magnetostratigraphic datasets of the same depositional area on the Trento plateau, yielding a detailed and robust age calibration of the Ra Stua succession. The Lower Cretaceous Ra Stua Formation in the Dolomites is assigned as lower Barremian (Taveraidiscus hugii Zone) to lower upper Barremian (Toxancyloceras vandenheckii Zone). Ammonoids enable a first biostratigraphic subdivision for that puzzling section at Ra Stua. This forms the basis for analyses of the faunal distribution and the palaeoenvironmental evolution of the northerneastern Trento Plateau on the western edge of the Cretaceous Tethys. The Ra Stua section is an enigmatic jigsaw piece correlatable to the Barremian of the entirely preserved sections in the Puez area. The succession consists of marlstones to marly limestone alternations of the Lower Cretaceous. These deposits cover only restricted areas in the Dolomites, but the facies type appears isochronically over wide areas in the Tethys. Lower Cretaceous successions from the Ra Stua area are known, but this isolated block is studied in detail for the first time. The Puez Formation occurs at the Ra Stua section with the Puez-Limestone Member, known as the lowermost member at the type section in the Puez area.

从地层学上研究了白云岩（南阿尔卑斯山，意大利北部）的 Ra Stua 的 Barremian 半远洋层序。在生物地层学、岩性、化学地层学和地球物理学方面研究了一个短的 Barremian 剖面，随后与已知的等时古地磁数据和海平面变化进行了比较。结果与特伦托高原同一沉积区的磁地层数据集相关联，从而对 Ra Stua 层序进行了详细而可靠的年龄校准。白云岩中的下白垩统 Ra Stua 组被指定为下巴雷米亚( Taveraidiscus hugii带) 到下巴雷米亚( Toxancyloceras vandenheckii)区）。类化合物使 Ra Stua 令人费解的部分的第一个生物地层细分成为可能。这构成了分析白垩纪特提斯西缘特伦托高原东北部动物群分布和古环境演化的基础。Ra Stua 部分是一个神秘的拼图，与 Puez 地区完全保存的部分的 Barremian 相关。该系列由下白垩统的泥灰岩到泥灰质石灰岩交替组成。这些矿床仅覆盖白云岩的限制区域，但相类型在特提斯的广阔区域内等时出现。来自 Ra Stua 地区的下白垩统序列是已知的，但这是第一次详细研究这个孤立的区块。Puez 地层出现在 Ra Stua 地段和 Puez-Limestone 段，