Fremington Clay — OD cross-sections

Appendix A classifications vs published lacustrine OD (~15–28 m). Sheet 293 / DigMap TILMP covers head on the Hele–Bickington ridge (BH9–11 clay tops ~38–40 m OD), above the lacustrine basin.

Cross-section A — Higher Gorse / Lake to RoundswellLong-axis · green lacustrine · amber uncertain · red head above basinm OD · Tim Daw / sarsen.org · CC BY-SApublished lacustrine OD ~15-28 m1015202530354045500 m200 m400 m600 m800 m1000 m1200 m1400 mBH15BH16BH18BH14BH17BH13BH12BH1BH4BH2BH3BH7BH8BH9BH10BH11W/start OSGB 252750E 131650NE/end OSGB 254200E 131220Nelevation (m OD)
Section A · Higher Gorse / Lake → Roundswell · holes within ~420 m of the line.
Cross-section B — N-S across Hele-Bickington ridgeBasin floor north to head on ridge (BH9-11) · lacustrine OD band 15-28 mm OD · Tim Daw / sarsen.org · CC BY-SApublished lacustrine OD ~15-28 m1015202530354045500 m200 m400 m600 m800 m1000 m1200 mBH17BH6BH5BH4SS53SW54BH1BH3BH2BH7BH8BH9BH10BH11W/start OSGB 253400E 132150NE/end OSGB 254200E 131100Nelevation (m OD)
Section B · N–S across Hele–Bickington ridge · holes within ~450 m of the line.

Also see the interactive 3D lacustrine lens. © Tim Daw / sarsen.org 2026 · CC BY-SA 4.0 · Science: Constraining the Fremington Clays