By the Triassic, the entire basin had evolved into an intracratonic basin
, with sedimentation occurring on a stable basement.
Tectono-sedimentological evolution of an elongate intracratonic basin
(Aulacogen): The case of the Benue Trough of Nigeria.
Another consequence of this volume being the offspring of a European Union of Geosciences meeting is that the case studies are heavily based on European basins (twelve out of fifteen papers), with additional examples from Australia (one fore-arc basin), Chile (a divergent continental margin), and Asia (one intracratonic basin).
Out of the fifteen research papers, five deal with fold-thrust belts and associated intramontane or piggyback basins, three papers focus on foreland basins, three on rift and/or graben/half-graben basins, two concentrate on intracratonic basins, one presents the case study of a divergent continental margin, and one other deals with a fore-arc basin.
The Sverdrup Basin is a northeast-trending, intracratonic basin
that extends along the Arctic polar margin from the northern tip of Ellesmere Island to Prince Patrick and Melville Islands.
The K-bentonite beds discussed in this paper are situated on the southwestern margin of the big intracratonic basin
. Exact location of the volcanoes that produced these ash beds still remains unknown.
Geologically, the state consists of large areas of sedimentary unconsolidated deposits in the west on landforms of the food-plain, sedimentary rocks of intracratonic basins
in the east, with the development of landforms such as plateaus, mesas, and buttes, and metamorphic and igneous rocks of the mobile belts and crystalline basement in the centre-south, including landform elements with faults and folds producing ridges, narrow valleys, plateaus and hills.
The shared history between the basins of Laurentia is complex and extensive, supporting the multiple pathway hypothesis for the Richmondian Invasion including sources from both intracratonic basins
as well as marginal basins.
The same trend could be described in Spain (Arche and Lopez-Gomez, 2005), British Islands, Germany (Roscher and Schneider, 2006), Italy (Cassinis, 2001) and particularly Sardinia (Pittau and Del Rio, 2004), North Sea (Martin et al., 2002), the Czech Republic, Poland, Bulgaria (Yanev, 2000), Russia, Ukraine, etc., where "New Red Sandstones" characterised Late Palaeozoic intracratonic basins
Stratabound ore deposits (syngenetic, diagenetic and epigenetic) are found in sedimentary sequences of passive-margin intracratonic basins
formed during Jurassic-Cretaceous times (Fig.
Whether these rocks were deposited in deep, intracratonic basins
, or whether they were open to large oceans is still debated.