Title: |
RUBY TRIANGLE LONDON BOROUGH OF SOUTHWARK A Report on the Geoarchaeological Monitoring |
Series: |
Quaternary Scientific (Quest) unpublished report series
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Downloads: |
quaterna1-309791_1.pdf (1 MB)
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Licence Type: |
ADS Terms of Use and Access
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DOI |
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Publication Type: |
Report (in Series)
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Abstract: |
A programme of geoarchaeological monitoring was carried out at the Ruby Triangle site in order to (1) to clarify the nature of the sub-surface stratigraphy across the site; and (2) to clarify the nature, depth, extent and possible date of any alluvium or Langley Silt deposits. In order to address these aims, a total of three geotechnical boreholes were monitored on-site, with the geotechnical logs from the remaining interventions also examined, in order to produce a basic deposit model of the major stratigraphic units at the site. The deposits overlying the bedrock consist predominantly of the Kempton Park Gravel, overlain in one sequence by a thin (0.3m thick) horizon of possible Langley Silt, and elsewhere, Made Ground. The surface of the Gravel lies at between ca. 0.5 and 1.5m OD across the site, generally rising towards the south/southeast to a level of around 1.5m OD. Overlying the higher Gravel surface towards the southeast of the site a unit interpreted as a possible remnant of the Langley Silt was recorded in one geotechnical intervention at between 1.85 and 1.55m OD. The Langley Silt was not observed in any of the other geotechnical boreholes; Made Ground directly overlies the Gravel elsewhere, in some places possibly truncating the natural sequence. On the basis of the limited presence and thin nature of the Langley Silt at the site, no further geoarchaeological interventions are recommended. The elevation of the Gravel, and the location of the site not far from the floodplain edge, indicates that there is some potential for archaeological evidence or remains to be present. The Gravel surface is of similar elevations to that at the B and Q Depot, Old Kent Road (Bird et al., 1991; Sidell et al., 2002) and Marlborough Grove (MAG93), where flint scatters and hearth deposits were recorded on weathered sand deposits overlying the Kempton Park Gravel at between ca. 0.8 and 1.2m OD. |
Author: |
Daniel Young
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Publisher: |
Quaternary Scientific (Quest)
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Other Person/Org: |
Historic England (OASIS Reviewer)
Southwark Council (OASIS Reviewer)
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Year of Publication: |
2018
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Locations: |
Site: |
Ruby Triangle |
County: |
Greater London |
District: |
Southwark |
Parish: |
BERMONDSEY ROTHERHITHE AND SOUTHWARK |
Country: |
England |
Grid Reference: 534600, 177850 (Easting, Northing)
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Subjects / Periods: |
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Identifiers: |
OASIS Id: |
quaterna1-309791 |
OBIB: |
Quaternary Scientific (QUEST) Unpublished Report February 2018; Project Number 193/17 |
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Source: |
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Relations: |
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Created Date: |
30 Apr 2020 |