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Diagenetic microlamination in chalk

Ekdale, A. A ; Bromley, Richard G

Journal of sedimentary petrology, 1988-09, Vol.58 (5), p.857-861 [Periódico revisado por pares]

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Título:
Diagenetic microlamination in chalk
Autor: Ekdale, A. A ; Bromley, Richard G
Assuntos: calcite ; carbonate rocks ; carbonates ; chalk ; Cretaceous ; Denmark ; diagenesis ; Europe ; fabric ; laminations ; Maestrichtian ; Mesozoic ; microlaminations ; planar bedding structures ; pressure solution ; processes ; Scandinavia ; sed rocks, sediments ; sedimentary petrology ; sedimentary rocks ; sedimentary structures ; Senonian ; techniques ; Upper Cretaceous ; Western Europe ; White Chalk
É parte de: Journal of sedimentary petrology, 1988-09, Vol.58 (5), p.857-861
Descrição: The Maastrichtian chalk of Denmark contains units that exhibit a very fine lamination of presumed diagenetic origin. The chalk laminae, only a few tens or hundreds of microns thick, are bounded by irregularly wrinkled, parallel, pressure-solution planes. These appear to be microstylolitic seams that contain no detectable films of clay or other insoluble material. They possibly represent a stratigraphic condensation of up to 15%. Despite the release of considerable amounts of calcium carbonate in solution, the chalk has remained poorly cemented.
Editor: Society of Economic Paleontologists and Mineralogists
Idioma: Inglês

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