0-700 years In the upper part of the core, which goes back about 700 years, are fine-grained sediments, mostly roots, burrows and a lot of organic material …

700-1500 years The middle part of the core is between around 700 to 1500 years old. What is distinctive here is the flaser structure …

1500-200 years In the bottom (older) part of the core, which was formed about 2000 to 1500 years ago, cross-stratification structures are recognizable …