Extended Data Fig. 6: Trace fossils and burrows between 83 and 117 cm depth in core GS07-148-17GC.
From: Eurasian Ice Sheet collapse was a major source of Meltwater Pulse 1A 14,600 years ago
a, Computed tomography radiograph with colour scheme chosen to emphasise trace fossils and burrows. White and light blue colours indicate low-density sediments and cavities, red and yellow colours mark high-density material. b, Photograph of the core surface showing open burrow tubes and cavities, a and b are aligned on the same depth scale. c, Close-up of burrow cavity containing ovoid pellets with the same density as the surrounding sediment. We assume these pellets were made by the burrowing organism.
