Supplementary files for: Mudstone diagenesis and sandstone provenance in an Upper Jurassic – Lower Cretaceous evolving half-graben system, Wollaston Forland, North-East Greenland ...
The influence of rifting on the composition of Kimmeridgian to Barremian mudstones from northern Wollaston Forland in North-East Greenland is investigated by petrographic and mineralogical analysis, in addition to U-Pb zircon provenance analysis of nearby sandstones. The mudstone composition is foun...
| Main Authors: | , , , , |
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| Format: | Dataset |
| Language: | unknown |
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GEUS Dataverse
2023
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| Subjects: | |
| Online Access: | https://dx.doi.org/10.22008/fk2/kel0a6 https://dataverse.geus.dk/citation?persistentId=doi:10.22008/FK2/KEL0A6 |
| Summary: | The influence of rifting on the composition of Kimmeridgian to Barremian mudstones from northern Wollaston Forland in North-East Greenland is investigated by petrographic and mineralogical analysis, in addition to U-Pb zircon provenance analysis of nearby sandstones. The mudstone composition is found to vary systematically as a function of both the timing of the rifting progression and the position in the half-graben depositional system. Pyrite primarily precipitated in the early rift to rift climax phases. Euhedral pyrite overgrowths on framboids formed only during the rift climax phase (Lindemans Bugt Formation). Dolomite is the dominant carbonate cement, except for the sediments deposited in the early waning rift phase (Palnatokes Bjerg Formation) where calcite is dominant, and in the late waning rift phase (Stratumbjerg Formation) where siderite dominates. A diagenetic process scheme is established to summarize the main diagenetic reactions, of which the highest-temperature reactions with precipitation ... |
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