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Field Visit

Date 24 April 2015

Event ID 1025862

Category Recording

Type Field Visit

Permalink http://canmore.org.uk/event/1025862

NS 45482 72901 (Canmore ID: 43313, SMR: 12891) Four timbers and three stakes were collected from the eroding intertidal platform in the Firth of Clyde on 24 April, 2015. The site consists of a semi-circle of timber and stone on its E side and an irregular stone mound on its NW side. The central part of the site is hidden by estuarine muds. The first pair of timber samples was collected from the junction between the timber and stone semi-circle and the stone mound. The second pair of samples was collected from two substantial exposed parallel timbers 10m diagonally to the SE of the first pair. The three stakes were sampled from a group of stakes protruding from the estuarine muds, c5m to the NE of the second pair of samples. The site is in an overall poor condition and is deteriorating. A number of substantial timbers visible in various plans from the 1990s have been lost. Furthermore, both observations in the field and subsequent laboratory work demonstrate a large extent of decomposition of the timber component and attack by the shipworm, T. navalis.

Sampling has been conducted to establish internal and absolute chronologies of Dumbuck and Erskine Bridge marine crannogs through radiocarbon wiggle-match dating of select contexts. This will resolve the question of timber reuse and establish the foundation for building a precise chronology of intertidal settlement in the Firth of Clyde.

Archive: National Record of the Historic Environment (NRHE) and SUERC

Funder: Historic Scotland and Caledonian Research Fund

Piotr Jacobsson – SUERC

(Source: DES, Volume 16)

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