Kattegat
Information from:- Late glacial to early Holocene development of southern Kattegat, by Carina Bendixen et al
"Two lithological units presumably of Holocene age were also found in sediment core no. DGU 561118.10 collected at 56°23.165´N, 11°22.0´E from a water depth of 38.0 m.
The core was 518 cm long and consisted of 136 cm sand with abundant shells of the common blue mussel Mytilus edulis characteristic of shallow water, overlain by 328 cm of mud with shells of Turritella communis, Arctica islandica, Pecten s.l. sp. and other marine molluscs that are characteristic of deeper water. The marked lithological change 382 cm below the core top probably corresponds to the boundary between units H1 and H2 (Bendixen 2012). We suggest that the sand was deposited during the early Holocene when sea level was low, whereas the mud was deposited after the relative sea level had increased. Radiocarbon dating of Holocene sub-littoral sand deposits in the region has yielded ages of c. 11–10 cal. ka BP (Bennike et al. 2000; Jensen et al. 2002a)."
The sealevel curve for the North Sea west coast of Denmark (Hijma et al) indicates that the date that mussels were living in the Kattegat was around 10,000BP.
No comments:
Post a Comment