Crustal Structure of the Lofoten Shelf, NE North Atlantic,along the Silver-Road refraction profile
- 1ITU Eurasia Institute of Earth Sciences, Solid Earth, İstanbul, Türkiye (metin.kahraman2@gmail.com)
- 2China University of Geosciences, School of Earth Sciences, Wuhan, China
- 3GEOMAR Helmholtz Center for Ocean Research, Section of Marine Geodynamics, Kiel, Germany
- 4Stanford University, Department of Geophysics, CA 94305, USA
- 5Centre for Earth Evolution and Dynamics, University of Oslo, Oslo, Norway
- 6Geological Survey of Sweden, Uppsala, Sweden
- 7Department of Earth Science, University of Bergen, Bergen, Norway
The Lofoten continental shelf is located at the edge of the Baltic Shield in the northeastern North Atlantic Ocean. It was formed during continental break up in early Eocene associated with intense magmatism, leading to large intrusions and basaltic volcanic rocks now hidden below Cenozoic sediments. The Lofoten shelf is relatively narrow.
We present results of ray tracing model of seismic refraction/wide-angle reflection data along the offshore Silver Road profile across the Lofoten Shelf at the northeastern Baltic Shield. The ~300km long WNW/ESE trending offshore section between 63oN and 71oN profile is perpendicular to the coastline and extends a ~300km onshore section. Wide-angle seismic data obtained from air gun shots from the vessel Hakon Mosby along the whole offshore profile were recorded by 16 ocean bottom seismometers on the shelf, slope and oceanic environment as well as by 270 onshore seismic stations.
The new offshore crustal velocity - depth model covers the anomalous and heterogeneous transition from shelf to oceanic lithosphere around the North Atlantic Ocean. The results will test existence of crustal root and magmatic intrusions along the offshore profile.
How to cite: Kahraman, M., Thybo, H., Artemieva, I., Shulgin, A., Hedin, P., and Mjelde, R.: Crustal Structure of the Lofoten Shelf, NE North Atlantic,along the Silver-Road refraction profile, EGU General Assembly 2024, Vienna, Austria, 14–19 Apr 2024, EGU24-18927, https://doi.org/10.5194/egusphere-egu24-18927, 2024.
