Giant seabed polygons and underlying polygonal faults in the Caribbean Sea as markers of the sedimentary cover extension in the Grenada Basin

Abstract

> Seabed giant polygons were identified in the Grenada Basin, covering the widest area (55000 km²) ever found on Earth > The local ellipse of strains provided major orientations for extension needed for polygons to initiate > Polygonal faults orientations are indicative of the modern strain state in the upper sedimentary column, defining two major tectonic domains