title: The composition of the sandstone from the Oligocene turbidite of the Tuapse marginal trough
abstract: The lower part of the Maykop Group sediments of the Crimea-Caucasus region were studied. Available outcrops of every structure-facies zone were examined and the sandstone composition was determined in thin sections: as a result five main lithologies were distinguished. Sharply discrepant provenance sources for the Kerch Peninsula, Sochi area, and Abkhazia for the Early Oligocene are suggested and those feeding areas are assumed to be variably remote from a sedimentary basin. An updated Rupelian 
journal: Moscow University Geology Bulletin