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Iceberg Scour Marks in the Southern North Sea - Indications for Iceberg Transport at the Beginning of Northern Hemispher
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 80th EAGE Conference and Exhibition 2018, Jun 2018, Volume 2018, p.1 - 5
Abstract
Based on 3D seismic data within the northwestern German North Sea glacial lineaments, interpreted as iceberg scour marks were studied. A suite of four commercial 3D seismic surveys covering an area of ∼4000 km2 referred to as the Entenschnabel area have been used to investigate the geomorphology and ice-related glacial features of the Quaternary succession. Eight prominent seismic horizons between 250–1050 ms (TWT, approximately 200–1000 m) depth are interpreted in the study area. All horizons reveal curvilinear and cross-cutting lineations, interpreted as iceberg scour marks. As previously suggested for the Dutch offshore correlation of our data show the iceberg scour marks in the study area can be attributed to younger Gelasian age (1.8 Ma), but also that iceberg scour marks even occur already at the beginning of NGH around 2.6 Ma. Furthermore, amplitude mapping of some of the mapped horizons shows distinct correlation of bright spot accumulation and iceberg scour marks occurrence.