Regional Caledonian structure of Hertugen af Orléans Land, North-East Greenland
| Autor: | R.A Strachan, F Kalsbeek, H.F Jepsen |
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| Rok vydání: | 1991 |
| Předmět: | |
| Zdroj: | Rapport Grønlands Geologiske Undersøgelse. 152:95-102 |
| ISSN: | 2597-2944 0418-6559 |
| DOI: | 10.34194/rapggu.v152.8162 |
| Popis: | Three structural elements of the East Greenland Caledonides are present in Hertugen af Orleans Land: (1) a marginal NNE-SSW trending zone of crystalIine basement rocks overlain by middle Proterozoic sediments (Trekant Series) in the westernmost nunatak area, characterised by folds and thrusts; (2) a central NNE–SSW trending belt of alIochthonous orthogneisses dominated by upright and west-vergent folds; and (3) and eastern N–S trending sinistral shear zone of intensely sheared, mylonitic gneisses (Storstrømmen shear zone). This structural pattern is a continuation of the structural elements in Dronning Louise Land, 40 km to the south-south-east. The late Caledonian Storstrømmen shear zone and its northward continuation define a 10 km wide linear feature of regional significance which can be followed along strike for more than 300 km. |
| Databáze: | OpenAIRE |
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