The Ediacaran sedimentary rocks on the East European Craton (EEC) comprise chiefly siliciclastic deposits of the Volyn and Valdai series that have commonly been regarded as deposits in a shallow epicontinental sea on Baltica. However, an intermittent fresh-water sedimentary setting was also indicated for some part of the paleocontinent. Surprisingly, although Baltica was positioned in low latitudes during the Ediacaran period, no carbonate sequences have formed on the EEC. Systematic and detailed mineralogical, petrographic and stable isotope evaluation of carbonate minerals occurring in the Ediacaran sedimentary rocks of the western EEC stretching from the Arkhangelsk area at the White Sea to the Ukraine-Moldova borderland near the Black Sea show that continuously marine or sea water-influenced depositional conditions existed only in the marginal parts of the area: Podillya, Moldova, and the Arkhangelsk area. In contrast, a fully continental depositional setting stretched in the central part (St. Petersburg area, Lithuania, E Belarus) with intermittent periods of marine or brackish-water conditions only in E Belarus. SW Belarus and Volyn were influenced by marine or brackish environments.

Highly ¹³C-enriched early-diagenetic calcite from Poddillya and pedogenic siderite from the St. Petersburg area attest for bacterial methanogenesis operating during the Kotlinian period both in marine and continental environments, respectively. This shows that not only marine, but also terrestrial biosphere was already very productive at the end of the Ediacaran. The δ¹⁸O composition of meteoric, marine hypersaline, burial, and hydrothermal fluids was reconstructed by integration of mineralogical, petrographic and stable isotope data for various types of Ediacaran carbonates from the western EEC. Moreover, the range of δ¹⁸O values for Ediacaran marine carbonate was constrained by setting the lower limit at −5‰, which is the maximum value for pedogenic siderite, and the upper limit at +2‰, which is the minimum value for carbonates associated with saline fluids.

东欧克拉通 (EEC) 上的埃迪卡拉纪沉积岩主要包括 Volyn 和 Valdai 系列的硅质碎屑沉积物，它们通常被认为是波罗的海浅表陆海中的沉积物。然而，古大陆的某些部分也显示出间歇性的淡水沉积环境。令人惊讶的是，虽然波罗的海在埃迪卡拉纪时期位于低纬度地区，但在 EEC 上并没有形成碳酸盐岩层序。系统详细的矿物学，从白海的阿尔汉格尔斯克地区到黑海附近的乌克兰-摩尔多瓦边境的西欧共体埃迪卡拉纪沉积岩中出现的碳酸盐矿物的岩相学和稳定同位素评估表明，仅存在持续受海洋或海水影响的沉积条件在该地区的边缘地区：波迪利亚、摩尔多瓦和阿尔汉格尔斯克地区。相比之下，中部（圣彼得堡地区、立陶宛、白俄罗斯东部）完全是大陆沉积环境，仅在白俄罗斯东部出现间歇性的海洋或咸水条件。SW Belarus 和 Volyn 受到海洋或咸水环境的影响。圣彼得堡地区、立陶宛、白俄罗斯东部），仅在白俄罗斯东部有间歇性的海洋或咸水条件。SW Belarus 和 Volyn 受到海洋或咸水环境的影响。圣彼得堡地区、立陶宛、白俄罗斯东部），仅在白俄罗斯东部有间歇性的海洋或咸水条件。SW Belarus 和 Volyn 受到海洋或咸水环境的影响。

高度¹³ C-富集从Poddillya早期成岩方解石和成土菱铁矿从圣彼得堡区域鉴证用于细菌甲烷操作期间无论是在海陆环境Kotlinian期间，分别。这表明，在埃迪卡拉纪末期，不仅海洋生物圈，陆地生物圈也已经非常多产。通过整合欧洲经济共同体西部埃迪卡拉纪碳酸盐岩的矿物学、岩相学和稳定同位素数据，重建了大气、海相高盐度、埋藏和热液流体的 δ ¹⁸ O 组成。此外，δ ¹⁸的范围埃迪卡拉纪海洋碳酸盐的 O 值受到限制，下限为 -5‰，这是成土菱铁矿的最大值，上限为 +2‰，这是与咸水流体相关的碳酸盐的最小值。