Campbell, S., Scourse, J.D., Hunt, C.O., Keen, D.H. & Stephens, N. 1998. Quaternary of South-West England. Geological Conservation Review Series No. 14, JNCC, Peterborough, ISBN 0 412 78930 2. The original source material for these web pages has been made available by the JNCC under the Open Government Licence 3.0. Full details in the JNCC Open Data Policy
Tables
(Table 7.1) Radiocarbon dates from the outer peat
| Material |
Lab. Ref |
Result (years BP) |
Height (metres OD) |
| wood |
HAR–5642 |
4840 ± 70 |
−1.0 |
| peat |
HA–6363 |
5190 ± 80 |
— |
| peat |
HAR–5640 |
5200 ± 120 |
−2.1 |
| wood |
HAR–5631 |
6100 ± 100 |
−2.0 |
| wood |
HAR–5630 |
5630 ± 80 |
−2.0 |
| peat |
HAR–5641 |
5740 ± 100 |
−2.2 |
(Table 9.1) Fossil molluscs from the Chadbrick Gravel
| Species |
Number |
Percentage |
| Valvata cristata (Müller) |
1 |
0.4 |
| Valvata piscinalis (Müller) |
88 |
35.5 |
| Bithynia tentaculata (Linné) |
24 |
9.6 |
| Physa fontinalis (Linné) |
1 |
0.4 |
| Lymnaea stagnalis (Linné) |
1 |
0.4 |
| Lymnaea peregra (Müller) |
41 |
16.5 |
| Planorbis spp. |
2 |
0.8 |
| Gyraulus laevis (Alder) |
7 |
2.8 |
| Ancylus fluviatilis (Müller) |
1 |
0.4 |
| Unio sp. |
3 |
1.2 |
| Corbicula fluminalis (Müller) |
18 |
7.3 |
| ?Sphaerium sp. |
1 |
0.4 |
| Pisidium amnicum (Müller) |
9 |
3.6 |
| Pisidium clessini Neumayr |
5 |
2.0 |
| Pisidium henslowanum (Sheppard) |
5 |
2.0 |
| Pisidium nitidum Jenyns |
1 |
0.4 |
| Pisidium subtruncatum Maim |
4 |
1.6 |
| Pisidium spp. |
22 |
8.9 |
| Oxyloma cf. pfeifferi |
5 |
2.0 |
| Cochlicopa cf. lubrica |
1 |
0.4 |
| Vallonia cf. pukhella |
1 |
0.4 |
| Discus rotundatus (Müller) |
1 |
0.4 |
| ?Helicella sp. |
1 |
0.4 |
| Trichia cf. hispida |
6 |
2.4 |
| Total |
248 |
|
(Table 10.1) Fossil molluscs from three profiles through the interglacial channel-fill at Kennpier Footbridge (after Gilbertson and Hawkins, 1978a)
| Species |
KPA |
Profiles KPB |
KPD |
| Marine |
|
|
|
| Littorina littorea (Linné) |
3 |
— |
1 |
| Littorina saxatilis (Olivi) |
1 |
— |
— |
| Littorina littoralis (Linné) |
5 |
1 |
‑ |
| Littorina spp. |
13 |
1 |
2 |
| Retusa sp. |
— |
— |
1 |
| Nucella lapillus (Linné) |
3 |
— |
— |
| Ostrea sp. |
1 |
— |
2 |
| Cerastoderma spp. |
2 |
— |
frags |
| Macoma balthica (Linné) |
36 |
1 |
16 |
| Land and freshwater |
|
|
|
| Valvata piscinalis (Müller) |
127 |
72 |
423 |
| Belgrandia marginata (Michaud) |
14 |
— |
13 |
| Bithynia tentaculata (Linné) shells |
3 |
— |
4 |
| Bithynia tentaculata (Linn) opercula |
1092 |
3579 |
5619 |
| Lymnaea peregra (Müller) |
12 |
— |
65 |
| Anisus leucostoma Müller |
— |
— |
1 |
| Gyraulus laevis Alder |
4 |
— |
1 |
| Armiger crista (Linné) |
1 |
— |
1 |
| Planorbis spp. |
— |
— |
1 |
| Ancylus fluviatilis Müller |
2 |
— |
— |
| Trichla htspida (Linné) |
— |
— |
15 |
| Zonitoides nitidus (Müller) |
— |
— |
1 |
| Agrolimax cf. agrestis (Linné) |
70 |
70 |
128 |
| Agrolimax cf. reticulatus (Müller) |
30 |
43 |
35 |
| Agrolimax cf. laevis (Müller) |
6 |
— |
22 |
| Agrolimax spp. |
65 |
56 |
162 |
| Corbicula fluminalis (Müller) |
— |
20 |
24 |
| Pisidium amnicum (Müller) |
4 |
6 |
7 |
| Pisidium obtusale (Lamarck) |
— |
— |
1 |
| Pisidium subtruncatum Malm |
5 |
— |
1 |
| Pisidium henslowanum (Sheppard) |
1 |
— |
— |
| Pisidium nitidum Jenyns |
5 |
— |
1 |
| Pisidtum moitessierianum Paladilhe |
— |
— |
1 |
| Pisidium spp. |
13 |
4 |
13 |
| Total |
1560 |
3854 |
6564 |
(Table 10.2) Fossil molluscs from the interglacial deposit at Yew Tree Farm (after Gilbertson and Hawkins, 1978a)
| Species |
Number |
| Valvata cristata Müller |
12 |
| Valvata piscinalis (Müller) |
3324 |
| Beigrandia marginata (Michaud) |
970 |
| Bithynia tentaculata (Linné) shells |
1039 |
| Bithynia tentaculata (Linné) opercula |
1755 |
| Carychium minimum Müller |
2 |
| Lymnaea truncatula (Müller) |
192 |
| Lymnaea palustris (Müller) |
1 |
| Lymnaea peregra (Müller) |
886 |
| Planorbis planorbis (Linné) |
25 |
| Anisus vorticulus Troschel |
147 |
| Anisus leucostoma Müller |
141 |
| Gyraulus laevis Alder |
1613 |
| Armiger crista (Linné) |
615 |
| Planorbis spp. |
3 |
| Hippentis complanata (Linné) |
21 |
| Acroloxus lacustris (Linné) |
8 |
| Oxyloma cf. pfeifferi Rossmässler |
6 |
| Cochlicopa lubrica (Müller) |
2 |
| Pupilla muscorum (Linné) |
2 |
| Vallonia costata (Müller) |
4 |
| Vallonia puicbella (Müller) |
6 |
| Vallonia spp. |
1 |
| Cepaea nemoralis (Linné) |
1 |
| Trichia bispida (Linné) |
3 |
| Punctum pygmaeum Draparnaud |
1 |
| Zonitoides nitidus (Müller) |
4 |
| Agrolimax cf. agrestis (Linné) |
6 |
| Agrolimax spp. |
42 |
| Spbaerium corneum (Linné) |
1 |
| Corbicula fluminalis (Müller) |
72 |
| Pisidium amnicum (Müller) |
44 |
| Pisidium casertanum (Poli) |
7 |
| Pisidium obtusale (Lamarck) |
10 |
| Pisidium milium Held |
56 |
| Pisidium subtruncatum Malm |
138 |
| Pisidium benslowanum (Sheppard) |
24 |
| Pisidium nitidum Jenyns |
270 |
| Pisidium pulchellum Jenyns |
2 |
| Pisidium moitessierianum Paladilhe |
3 |
| Pisidium spp. |
190 |
| Total |
11 649 |
(Table 10.3) Molluscs from the interglacial deposit at Kenn Church (after Gilbertson, 1974; Gilbertson and Hawkins, 1978a)
| Sample |
A |
B |
C |
D |
E |
G |
J |
O |
| Sample depth (m) |
2.7 |
2.2 |
1.7 |
1.5 |
1.2 |
0.8 |
|
unstratified |
| Marine/estuarine taxa |
|
|
|
|
|
|
|
|
| Patella vulgata Linné |
|
|
|
|
|
2 |
|
|
| Gibbula sp. |
|
|
|
|
|
|
1 |
|
| Littorina littorea (Linné) |
1 |
|
|
|
|
|
2 |
|
| Littorina saxatilis (Olivi) |
2 |
|
|
|
|
|
1 |
|
| Littorina littoralis (Linné) |
1 |
|
|
|
1 |
1 |
|
|
| Littorina sp. |
2f |
f |
2f |
1f |
|
f |
f |
f |
| Nucella lapillus (Linné) |
|
|
|
|
|
|
1 |
2 |
| Ocenebra erinacea (Linné) |
|
|
|
|
|
1 |
1 |
|
| Buccinum undatum (Linné) |
|
|
|
|
|
|
1 |
3 |
| Nassarius reticulatus (Linné) |
|
|
|
|
|
|
1 |
|
| Cerastoderma spp. |
3f |
8f |
1f |
f |
|
f |
f |
if |
| Macoma balthica (Linné) |
7f |
16f |
23f |
2f |
|
6f |
90f |
50f |
| Brackish-water taxa |
|
|
|
|
|
|
|
|
| Hydrobia ventrosa Montagu |
163 |
125 |
16 |
2 |
|
1 |
|
|
| Hydrobia ulvae (Pennant) |
103 |
75 |
19 |
4 |
|
2 |
1 |
|
| Freshwater taxa |
|
|
|
|
|
|
|
|
| Valvata piscinalis (Müller) |
6 |
2 |
|
|
|
|
|
|
| Belgrandia marginate (Michaud) |
1 |
|
|
|
|
|
|
|
| Bithynia tentaculata (Linné) |
3 |
|
|
|
|
|
|
|
| Lymnaea peregra (Müller) |
20 |
14 |
5 |
|
|
|
|
|
| Planorbis planorbis (Linné) |
1 |
2 |
|
|
|
|
|
|
| Anisus vorticulus Troschel |
2 |
|
|
|
|
|
|
|
| Gyraulus laevis (Alder) |
11 |
15 |
1 |
|
|
|
|
|
| Corbicula fluminalis (Müller) |
|
|
|
|
|
2 |
|
|
| Pisidium subtruncatum Malm |
1 |
|
|
|
|
|
|
|
| Pisidium nitidum Jenyns |
1 |
|
|
|
|
|
|
|
| Pisidium moitessierianum Paladilhe |
1 |
|
|
|
|
|
|
|
| Pisidium spp. |
2 |
2 |
|
|
|
|
|
|
| Terrestrial taxa |
|
|
|
|
|
|
|
|
| Vallonia pulchella (Müller) |
1 |
|
|
|
|
|
|
|
| Vallonia enniensis (Gredler) |
|
1 |
|
|
|
|
|
|
| Trichia striolata Pfeiffer |
1 |
|
|
|
|
|
|
|
| Helicella virgata (Da Costa) |
|
|
|
|
|
1 |
|
|
| Discus rotundatus (Müller) |
|
|
|
|
|
1 |
|
|
References