Patkai, E. (2019). Archaeological borehole survey at Trews Weir, Exeter, Devon. Oakford Archaeology: Oakford Archaeology. https://doi.org/10.5284/1058636. Cite this using datacite

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Title:		 Archaeological borehole survey at Trews Weir, Exeter, Devon
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Series:		 Oakford Archaeology unpublished report series
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oakforda1-369599_1.pdf (4 MB) : Download
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https://doi.org/10.5284/1058636
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Publication Type:		 Report (in Series)
Abstract
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Abstract:		 A geotechnical borehole survey was undertaken in September 2019 by Red Rock Geoscience Ltd for Exeter City Council, at Trews Weir, Exeter, Devon, in advance of major repair works to the weir. The purpose of this survey was to investigate the causes of the weakening of the structure. The excavation of seven boreholes across the length of the weir allowed the recording of the structure and deposits below, providing valuable new information on the construction and date of the weir. The work identified a thick basal layer of gravel immediately above riverbed deposits in Boreholes 1 and 3, suggesting that an attempt was made to build at least some of the new weir on a 'solid' bedding layer. However, the sequence of deposits identified during the survey, for the most part, consisted of loose core material belonging to the new weir built in 1676 by Richard Hurd underneath a solid Heavitree Breccia capping. This sequence was especially well-preserved in Boreholes 1, 2, 3, 5 and 6. The solid mortared rubble core identified by Wessex Archaeology in March 2015 is likely to represent the 1698-1701 extension of the weir. Finally, evidence of modern repairs were identified in Boreholes 2 and 7.
Author
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Author:		 E Patkai
Publisher
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Publisher:		 Oakford Archaeology
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Other Person/Org:		 Historic England (OASIS Reviewer)
Exeter City HER (OASIS Reviewer)
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Year of Publication:		 2019
Locations
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Locations:
Site: Trews Weir
County: Devon
District: Exeter
Parish: EXETER
Country: England
Grid Reference: 292440, 91620 (Easting, Northing)
Subjects / Periods
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Subjects / Periods:
POST MEDIEVAL (Historic England Periods) WEIR (Monument Type England)
WATCHING BRIEF (Event)
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OASIS Id: oakforda1-369599
OBIB: 19-09
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Created Date
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Created Date:		 13 Jan 2020