Much like trees, clam shells have growth rings. The chemistry of these rings can be used as a proxy for ocean chemistry. Recently, an international team of scientists used the growth rings found in shells of Arctica islandica to produce an annual absolutely dated marine δ18O record for the last millennium which was published in Nature Communications. The record represents the first fine scale arch ...[Read More]
Coffee break biogeosciences–high resolution δ18O record from bivalves
Arctica islandica from the North Sea. Image: © Hans Hillewaert used under CC BY-SA 4.0.