Scottish Submerged Forest

27 Jan 2018

This story is again interesting as far as changing sea levels and ocean configuration is concerned. At https://www.scotsman.com/lifestyle/archaeologists-survey-scotland-s-fore... ... archaeologists are surveying Scotland's submerged forests (rather, wooded regions under the waves). This seems to revolve around the Bay of Ireland in the Orkneys and Benbecula in the Outer Hebrides. Stumps of trees and their roots have been known about in the Orkneys for some time - and the forest itself is said to date from 6000 years ago (or at least one section that was dated by tree rings or C14). We know that sea levels in Orkney rose dramatically around 3000BC - from the Ness of Brodgar excavations. Prior to 4000BC rkney was a single island mass - now split into islands and peninsulars that were the former high ground of the original. Going even further back in time, prior to 8000 years ago, Orkney was joined to the mainland of Scotland. All this seems to contradict the idea of glacial rebound - where Scotland is rising and southern England is sinking. However, the idea of rebound also involves the land going down as well as up (glacial bounce as it is sometimes called). Orkney must have been caught short - and once severed from the mainland was unable to bounce back up in tandem with it. The same is true of the Hebrides. At one time these islands would have been dry land between Stornaway to the Torridons - but the Scottish mountains still reach for the sky but the same mountain massif in the Hebrides is much closer to sea level. A piece of timber has been dated to 4400BC (which is shortly prior to the 4250BC low growth tree ring event).