Durham E-Theses Tectonic Evolution of the Prøven Igneous Complex within the Rinkian Fold-Thrust Belt, West Greenland: Investigation using 3D Photogrammetry SLEATH, PHOEBE,ROSE How to cite: SLEATH, PHOEBE,ROSE (2021) Tectonic Evolution of the Prøven Igneous Complex within the Rinkian Fold-Thrust Belt, West Greenland: Investigation using 3D Photogrammetry, Durham theses, Durham University. Available at Durham E-Theses Online: http://etheses.dur.ac.uk/14088/ Use policy The full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that: • a full bibliographic reference is made to the original source • a link is made to the metadata record in Durham E-Theses • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders. Please consult the full Durham E-Theses policy for further details. Academic Support Oce, Durham University, University Oce, Old Elvet, Durham DH1 3HP e-mail: [email protected] Tel: +44 0191 334 6107 http://etheses.dur.ac.uk 2 Tectonic Evolution of the Prøven Igneous Complex within the Rinkian Fold-Thrust Belt, West Greenland: Investigation using 3D Photogrammetry Phoebe Rose Sleath This thesis is submitted as fulfilment for an MSc by Research in Geology, Department of Earth Sciences, Durham University, 2021 1 Contents 1. Abstract .................................................................................................................................. 5 2. Acknowledgments.................................................................................................................. 5 3. Introduction ............................................................................................................................ 6 4. Geological Setting ................................................................................................................ 10 5. Methodology & Data Sources .............................................................................................. 13 5.1 Archive Maps ................................................................................................................. 13 5.2 Aerial Images ................................................................................................................. 15 5.3 Photogrammetry ............................................................................................................. 15 5.4 GIS ................................................................................................................................. 17 5.5 Cross Sections ................................................................................................................ 18 6. Tectonic Stratigraphy of Prøven-Upernavik ........................................................................ 20 6.1 Archean Orthogneisses ................................................................................................... 22 6.2 Archean Metasediments ................................................................................................. 22 6.2.1 Qeqertarssuaq Formation ......................................................................................... 22 6.3 Karrat Group .................................................................................................................. 22 5.3.1 Karrat Group South of the PIC ................................................................................ 23 5.3.2 The Karrat Group South and North of the PIC ........................................................ 24 6.4 Tectonic Stratigraphy and Intrusive Rocks in the Prøven-Upernavik Region ............... 26 6.4.1 Basement Gneiss...................................................................................................... 28 6.4.2 Quartz Arenite Formation ........................................................................................ 30 6.4.3 Nûkavsak Formation (NF) ....................................................................................... 32 6.4.4. Prøven Intrusive Complex ...................................................................................... 34 6.4.5 Leucocratic Intrusions ............................................................................................. 39 6.4.6 Tertiary Basalts ........................................................................................................ 42 6.4.7 Dykes ....................................................................................................................... 42 7. Structural Geology ............................................................................................................... 45 2 7.1 Akia (Lange Ø)............................................................................................................... 51 7.1.1 Descriptions ............................................................................................................. 51 7.1.2 Interpretations .......................................................................................................... 54 7.2 Atilissuaq Island ............................................................................................................. 57 7.2.1 Descriptions ............................................................................................................. 58 7.2.2 Interpretations .......................................................................................................... 59 7.3 Wider Atilissuaq Dome Complex .................................................................................. 61 7.3.1 Description............................................................................................................... 61 7.3.2 Interpretations .......................................................................................................... 63 7.4 Ikermiunnguaq and Qaarsorsuatsiaq .............................................................................. 65 7.4.1 Descriptions ............................................................................................................. 66 7.4.2 Interpretations .......................................................................................................... 68 7.5 Akornat and Nutaarmiut ................................................................................................. 70 7.5.1 Descriptions ............................................................................................................. 71 7.5.2 Interpretations .......................................................................................................... 73 7.6 Sanningasoq Fold ........................................................................................................... 75 7.6.1 Descriptions ............................................................................................................. 76 7.6.2 Interpretations .......................................................................................................... 79 7.7 Akuliaruseq and Amarortalik ......................................................................................... 80 7.7.1 Descriptions ............................................................................................................. 80 7.7.2 Interpretations .......................................................................................................... 82 7.8 Kangeq ........................................................................................................................... 83 .............................................................................................................................................. 83 7.8.1 Descriptions ............................................................................................................. 83 7.8.2 Interpretations .......................................................................................................... 89 7.9 Annertusoq and Iperaq ................................................................................................... 90 7.9.1 Descriptions ............................................................................................................. 90 3 7.9.2 Interpretations .......................................................................................................... 92 7.10 Ikeq Margin Thrust System .......................................................................................... 93 7.10.1 Descriptions ........................................................................................................... 94 7.10.2 Interpretations ........................................................................................................ 97 8. Discussion ............................................................................................................................ 98 8.1 Structural Evolution ....................................................................................................... 98 8.1.1 D1 ............................................................................................................................ 98 8.1.2 D2 ............................................................................................................................ 99 8.1.3 D3 ...........................................................................................................................