Abstract
In North-West Europe two mega-basins began their development during Late Carboniferous to Early Permian: The South Permian Basin stretching from eastern England into Poland , and the North Permian Basin reaching from Scotland into Denmark. These two basins were separated by the Mid North Sea High and the Ringkøbing-Fyn High which came into existence early in Permian. The initial phase of subsidence was accompanied by extensive subaerial volcanism. This was followed by a period of oxidation and erosion under desert conditions and deposition of red beds and sabkha sediments in the two Permian basins (fig. 19). These rocks are included in the Rotliegendes Group as originally established by Werner (1786). Continuous subsidence and transgression of the sea, but with a restricted connection to the ocean, lead to the formation of the evaporites of the Zechstein Group.
Highlights
Type section: For the present being the P-1 well, 10541-10865' b.KB may suffice as a reference for the Rotliegendes volcanics and underlying sediments belonging to the Autunian stage
By Fritz Lyngsie Jacobsen & JfiJrgen Gutzon Larsen In North-West Europe two mega-basins began their development during Late Carboniferous to Early Permian: The South Permian Basin stretching from eastern England into Poland, and the North Permian Basin reaching from Scotland into Denmark
These two basins were separated by the Mid North Sea High and the Ringk0bing-Fyn High which came into exis
Summary
Type section: For the present being the P-1 well, 10541-10865' b.KB may suffice as a reference for the Rotliegendes volcanics and underlying sediments belonging to the Autunian stage. Thickness: The volcanic rocks and interbedded sediments form a 99 m thick pile in the P-1 well, but in all other wells of the Danish off shore sector, the base of the volcanic rocks has not been penetrated. The cores and cuttings indicate, together with the log data, especially gamma ray, the predominance of basalts; but more differentiated rocks occur in the P-1 and W-1 wells. From the latter well these rocks are described as andesites and rhyolites (mudlog). They may occur as lava flows and pyroclastic beds.
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