UK structure site report : Walls Boundary Fault, Shetland

Understanding the architecture and structural history of ancient lithospheric faults is important for building wider regional geological models and helps us understand present-day analogies. The Walls Boundary Fault at Ollaberry, Shetland, is an ideal location for fault zone mapping and descriptions due to its almost unique location, excellent preservation of fault-deformation structures and relative ease of accessibility. Previous studies have characterised the wider fault zone on Shetland and the specific field locality (Watts et al. 2007; Armitage 2021; Armitage et al., 2021; 2024), however, none combined field descriptions with drone imagery to build integrated remote sensing and fieldwork workflows. Therefore, the following report is a characterisation for the Walls Boundary Fault at Ollaberry using a combination of unpublished and published material from Armitage et al. (2021) in addition to a detailed photogrammetric 3D model.