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Tectono-sedimentological evolution of an elongate intracratonic basin (Aulacogen): The case of the Benue Trough of Nigeria.
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.
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.
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.
Stratabound ore deposits (syngenetic, diagenetic and epigenetic) are found in sedimentary sequences of passive-margin intracratonic basins formed during Jurassic-Cretaceous times (Fig.
The Erdis basin is one of several adjacent intracratonic basins across North Africa that share sedimentological and geological history and together form a Palaeozic mega-province where significant current production already exists and substantial potential remains underexplored.
Whether these rocks were deposited in deep, intracratonic basins, or whether they were open to large oceans is still debated.
The basin is one of several large intracratonic basins found in central Australia that are filled mainly with Paleozoic and Precambrian sediments (about 1,000-5,000 metres thick).