Title: |
PLOT2 CENTRAL PARK, SEVERN BEACH, GLOUCESTERSHIRE: GEOARCHAEOLOGY BOREHOLE REPORT |
Series: |
ARCA unpublished report series
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Downloads: |
arca1-504234_186546.pdf (1 MB)
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Download
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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: |
Borehole survey The Mercia Mudstone Group bedrock lies between -2.09m OD (9.62m bgl) and +0.90m OD (6.75m bgl). the top fraction is heavily weathered with evidence for solifluction. The bedrock is overlain by fine grained intertidal/fluvial deposits of the Wentlooge Formation that has intercalated thin peat units. These units have been correlated with dated peat units on the neighbouring Sevenside Hotel site. On this basis the basal peat dates to c. 2470 – 2286 cal BC in the Late Neolithic. The succeeding peat commences growth at c. 2140 – 1957 cal BC in the Early Bronze Age and is overwhelmed by intertidal sedimentation at c. 830 – 775 cal BC in the Late Bronze Age.
Lithological evidence demonstrates that there was a cyclical change in the environment represented by fresh and brackish water peats, and intertidal mudflats evolving within a very low energy regime. The vegetational history of the site has not been assessed, however, palynological work at the Severnside Hotel site suggests that a similar picture would apply, namely that: there is no significant change throughout the sequence; the floral environment on the site consists of saltmarsh and fen/reed swamp with stands of alder and willow on the floodplain margin; and mixed deciduous forest grows on the higher land. These results are very similar to the sites of Willow Farm and Severn Road, 1.7km south southwest on the floodplain. No evidence of human activity was found.
The marked similarity in lithostratigraphy between the two sites leads to a recommendation that no further work be undertaken on the Plot 2 Central Park site. |
Author: |
Nick Watson
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Publisher: |
ARCA
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Year of Publication: |
2020
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Locations: |
County: |
Gloucestershire |
District: |
South Gloucestershire |
Country: |
England |
Parish: |
Pilning and Severn Beach |
Grid Reference: 355735, 183136 (Easting, Northing)
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Subjects / Periods: |
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Identifiers: |
OASIS Id: |
arca1-504234 |
Report id: |
2021-4 |
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Source: |
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Relations: |
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Created Date: |
10 Mar 2023 |