Millennial to Centennial Cyclicity Within the Exoreic Saline System of Boujmel, Southern Tunisia

Previous works proposed different age models of sedimentation in Sebkha Lagoon of Boujmel leading to the setting of controversial interpretations of eustatic and climatic phases. The aim of this work is carrying out a geological correlation and an astrochronological calibration based on the Holocene cyclostratigraphy leading to the setting of an age model satisfying dates of climatic and eustatic phases identified in southern Tunisia, including the Anthropocene and the Great Acceleration. Along a 130 cm core, four major climatic phases were upward recorded.

A review of the lower and middle Miocene of northern Belgium

The stratigraphy, sedimentology and paleogeography of the lower and middle Miocene Berchem and Bolderberg Formations from northern Belgium have been extensively studied during the last decades, a.o. in the framework of doctoral research, as parts of subsurface mapping and interregional geological correlation initiatives by governmental organizations. The last formal stratigraphical revision on formation level, however, almost dates from two decades ago, notwithstanding the fact that a wealth of new data has become available. A compilation and assessment of the stratigraphical data of the lower and middle Miocene has been carried out and a refined stratigraphical framework—based on dinoflagellate cyst stratigraphy—is presented. Recommendations for the National Commission for Stratigraphy of Belgium are proposed. A new member, the Molenbeersel member, is proposed for the glauconite-bearing silts and fine sands in the upper part of the Bolderberg Formation in the Roer Valley Graben.