ATTEMPT OF SEQUENCE CORRELATIONS DURING B ARREMIAN-APTIAN TIMES WITHIN A SYSTEM PLATFORM-BASIN-PLATFORM ALONG A DANUBE-GABROVO CROSS-SECTION (CENTRAL NORTHERN BULGARIA)
M. Ivanov et al., ATTEMPT OF SEQUENCE CORRELATIONS DURING B ARREMIAN-APTIAN TIMES WITHIN A SYSTEM PLATFORM-BASIN-PLATFORM ALONG A DANUBE-GABROVO CROSS-SECTION (CENTRAL NORTHERN BULGARIA), Comptes rendus de l'Academie des sciences. Serie II. Sciences de la terre et des planetes, 325(12), 1997, pp. 967-972
Along a Danube-Gabrovo cross-section from Central Fore Balkan nn to Mo
esian Platform the Barremian-Aptian deposits are distributed within th
ree distinct paleogeographic domains: a central terrigenous basin (Ple
ven-Polski Trambes) and, laterally (N: Danube, S: Gabrovo) two carbona
te-dominated platforms where ''Urgonian'' facies carl be well-develope
d. This pattern is induced by synsedimentary extensional tectonics alr
eady active from the end of Jurassic times. The subdivision of the var
ious series into eight 3(d) order depositional sequences and the recen
t discovery of ammonites allow us to propose new and more reliable cor
relations between the traditional lithologic formations characterizing
those three domains.