The environments of deposition of the Triassic Main Buntsandstein Formation in the P and Q quadrants, offshore the Netherlands

Rift–raft tectonics: examples of gravitational tectonics from the Zechstein basins of northwest Europe

“…Away from zones of deformation and erosion there is a remarkable consistency in lithology and thickness of the Lower Bacton Group and the St Bees Sandstone Formation (allowing for minor local variations and post Variscan basin sag). A tectonic event at the end of the Early Triassic is recognized as the Hardegsen unconformity in both basins and is a useful correlative tool (Ames & Farfan 1996). Restoration sections in the Southern North Sea by Arthur (1993) confirm the lateral consistency of the Bacton Group and the overlying Haisborough Group (Fig.…”

The feasibility of CO2 storage in the depleted P18-4 gas field offshore the Netherlands (the ROAD project)

“…Its origin is mainly fluvial, but it has also some aeolian sediments. It consists of braided river deposits interbedded with subordinate flood-plain and crevassesplay deposits and locally dune deposits (Ames and Farfan, 1996). The Volpriehausen Formation is a clean sandstone with a blocky appearance on gamma-ray logs (Fig.…”

“…It consists mainly of aeolian sediment (dunes), and some fluvial deposits (Ames and Farfan, 1996). It is marked by low gamma-ray values due to its high quartz grain content and because it is quartz-cemented (Geluk et al, 1996).…”

Diagenetic controls on dryland clastic reservoirs from the Buntsandstein Subgroup in the Netherlands

“…Although the well tests show adequate reservoir temperatures, porosity and permeability were lower than 5% and 0.1 mD respectively, as result of a high degree of compaction and cementation (Felder & Fernandez, 2018). Dolomite is often described as the main cementing mineral in the Buntsandstein (Maniar, 2019;Veldkamp & Boxem, 2015;Ames, R. & Farfan, 1996). On the other hand, the presence of detrital dolomite has been underestimated in the Lower Triassic of the Netherlands, while many studies have described the importance of the latter in siliciclastic dryland systems, as key element controlling diagenetic evolution, thus reservoir quality (Henares et al, 2016;Molenaar and Felder, 2019) .…”