The main stages of sedimentary development of the shallow-water carbonate platform of the Late Jurassic: A case study of the marginal zone in north-eastern Poland

Authors

  • Andrzej Wierzbowski Faculty of Geology, University of Warsaw, Żwirki i Wigury 93, 02-089 Warsaw

Keywords:

facies, stratigraphy, ammonites, correlation, tectonics, climate changes

Abstract

This study discusses the development of sedimentation in the Late Jurassic on the northern margin of the huge shallow-water carbonate platform ranging through north-eastern Poland from the south-east, where it passes into the siliciclastic deposits of the foreland in the Peri-Baltic Syneclise. It is based on archival material from deep-boreholes, including the ammonites collected whose palaeontological classification and stratigraphical interpretation have been partly revised. The main stages of sedimentary development recognized include: the local appearance of shallow-water deposits during the Late Oxfordian, the foundation of the shallow-water carbonate platform during the Early Kimmeridgian, the tectonic disintegration of the platform and its drowning during the late Early Kimmeridgian to Early Tithonian, and the re-appearance of the shallow-water carbonate platform at the beginning of the Late Tithonian. These phenomena are compared with the stages of development of the coeval well-known successions including the shallow-water carbonate platform deposits in other areas in Poland (Holy Cross Mts.) and elsewhere (Jura Mts., northern Switzerland) to find features in common which could have been controlled by wider climatic and tectonic factors.

Downloads

Published

2025-04-16

Issue

Section

Articles