In the Ukrainian Precarpathians the Oxfordian – Valanginian deposits compose a common carbonate complex. Seven types of sections are determined in its composition: fore-reef, reef, back-reef, transitional, lagoon, shallow-water, outlying. The conditions of their sedimentation are characterized. The main stages of these deposits sedimentation related with eustatic fluctuations are determined: Oxfordian, Oxfordian – Kimmeridgian boundary, Early Kimmeridgian, Late Kimmeridgian – Early Tithonian, Late Tithonian – Early Berriassian, Early and Late Berriassian boundary, Late Berriassian – Valanginian. The sedimentary model of these deposits has been carried out.

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