Table 3.
87Sr/86Sr values measured in modern plants growing on lithology of Lower Devonian age within 10 miles (approximately 16 km) of Penywyrlod and Ty Isaf
| Latitude | Longitude | Sample number | Plant species | Superficial deposits | Bedrock geology | Formation | Geological period | 87Sr/86Sr |
|---|---|---|---|---|---|---|---|---|
| 51.94752 | −3.42426 | S‐WALES 36 | Ivy (Hedera helix) | Glaciofluvial Sheet Deposits, Devensian | Argillaceous rocks and sandstone, interbedded | St Maughans Formation | Lower Devonian | 0.710056 |
| 51.93542 | −3.34336 | S‐WALES 37 | Ivy (Hedera helix) and Beech leaves (Fagus sylvatica) | Glaciofluvial Sheet Deposits, Devensian | Argillaceous rocks and sandstone, interbedded | St Maughans Formation | Lower Devonian | 0.710418 |
| 51.92573 | −3.34086 | S‐WALES 38 | Cow Parsley (Anthriscus sylvestris) | Glaciofluvial Fan Deposits, Devensian | Argillaceous rocks and sandstone, interbedded | St Maughans Formation | Lower Devonian | 0.71137 |
| 51.90365 | −3.29715 | S‐WALES 39 | Ivy (Hedera helix) and annuals | Till, Devensian | Sandstone and argillaceous rocks, interbedded | Senni Formation | Lower Devonian | 0.710384 |
| 51.88732 | −3.27605 | S‐WALES 40 | Hart's‐tongue fern (Asplenium scolopendrium) | None recorded | Sandstone and argillaceous rocks, interbedded | Senni Formation | Lower Devonian | 0.710653 |
| 51.87312 | −3.26747 | S‐WALES 41 | Hedgerow annuals | Glaciofluvial Deposits, Devensian | Sandstone and argillaceous rocks, interbedded | Senni Formation | Lower Devonian | 0.711317 |
| 51.86806 | −3.21373 | S‐WALES 42 | Ivy (Hedera helix) | Glaciofluvial Deposits, Devensian | Sandstone and argillaceous rocks, interbedded | Senni Formation | Lower Devonian | 0.713664 |
| 51.93308 | −3.12945 | S‐WALES 43 | Goose Grass (Galium aparine) | None recorded | Sandstone and argillaceous rocks, interbedded | Senni Formation | Lower Devonian | 0.710166 |
| 51.87462 | −3.10612 | S‐WALES 44 | Cow Parsley (Anthriscus sylvestris) | Till, Devensian | Sandstone and argillaceous rocks, interbedded | Senni Formation | Lower Devonian | 0.709728 |
| 51.87568 | −3.07297 | S‐WALES 45 | Lords‐and‐ladies (Arum maculatum) | Till, Devensian | Sandstone and argillaceous rocks, interbedded | Senni Formation | Lower Devonian | 0.710393 |
| 51.88318 | −3.03830 | S‐WALES 46 | Goose Grass (Galium aparine) | Glaciolacustrine Deposits, Devensian | Sandstone and argillaceous rocks, interbedded | Senni Formation | Lower Devonian | 0.710621 |
| 51.88205 | −2.98572 | S‐WALES 47 | Ivy (Hedera helix) | Glaciofluvial Deposits, Devensian | Argillaceous rocks and sandstone, interbedded | St Maughans Formation | Lower Devonian | 0.709711 |