FACIAL-PALEOGEOGRAPHIC RECONSTRUCTIONS OF THE VALANGINIAN-HAUTERIVIAN STRATA BELONGING TO THE LOWER CRETACEOUS GYDAN PENINSULA AND THE WESTERN PART OF THE YENISEI-KHATANGA REGIONAL FOREDEEP

Abstract

Paleogeographic reconstructions were carried out, sedimentation models were determined, and facies-paleogeographic maps were constructed for the Valanginian-Hauterivian clinoform structures of the Lower Cretaceous of the Gydan Peninsula and the western part of the Yenisei-Khatanga foredeep based on the facies interpretation of the core, well logging and using seismic data. Revealed sedimentation criteria for the development of reservoir rocks. The distribution of rocks with improved reservoir properties is confined to the zones of development of facies of river channel shoals, accumulative sandy bodies of the coastal-marine zone, delta channels, delta fans and turbidites.