Depositional environments, facies and diagenesis of the Upper Jurassic–Lower Cretaceous carbonate deposits of the Buila-Vânturariþa Massif, Southern Carpathians (Romania)

• Autorzy: Pleş G. , Bucur I. I. , Săsăran E.

Identyfikatory

DOI

10.14241/asgp.2016.005

• Języki publikacji: EN

Abstrakty

EN

The Buila-Vânturariţa Massif consists of massive Upper Jurassic reef limestones (Kimmeridgian–Tithonian) and Lower Cretaceous (Berriasian–Valanginian, and Barremian–?Lower Aptian) deposits. Besides corals and stromatoporoids, a wide range of micro-encrusters and microbialites has contributed to their development. In this study, the authors describe briefly and interpret the main facies associations and present the microfossil assemblages that are important for age determination. The distribution of facies associations, corroborated with the micropalaeontological content and early diagenetic features, indicate different depositional environments. The carbonate successions show the evolution of the Late Jurassic–Early Cretaceous depositional environments from slope and reef-front to internal-platform sedimentary settings, including peritidal environments in the lowermost Cretaceous. Early diagenesis, represented by synsedimentary cementation in the form of micritization (including cement crusts in the reef microframework), followed by dissolution, cementation and dolomitization in a meteoric regime, and void-filling late cementation during the burial stage.

Słowa kluczowe

EN

Carbonate platforms; reefs; microfacies; micro-encrusters; carbonate diagenesis; Upper Jurassic; lowermost Cretaceous; Southern Carpathians; Romania

• Wydawca: Polskie Towarzystwo Geologiczne
• Czasopismo: Annales Societatis Geologorum Poloniae
• Rocznik: 2016
• Tom: Vol. 86, No. 2
• Strony: 165--183
• Opis fizyczny: Bibliogr. 73 poz., rys., wykr.

Twórcy

autor

Pleş G.

• Department of Geology, Babeş-Bolyai University, M. Kogălniceanu 1, 400084 Cluj-Napoca, Romania

autor

Bucur I. I.

• Department of Geology, Babeş-Bolyai University, M. Kogălniceanu 1, 400084 Cluj-Napoca, Romania

autor

Săsăran E.

• Department of Geology, Babeş-Bolyai University, M. Kogălniceanu 1, 400084 Cluj-Napoca, Romania

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Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.