![Top curves](../../../../jsp/jahia/templates/GSL/gsl_templates/img/keystage3/main_top_grad.gif)
Yellow sandstone, Sussex
Slanting beds (large-scale cross-bedding) like these are laid down in fast-flowing tidal currents today, so these sands may have been deposited by ancient tidal currents that swept the sand along as shown in the diagram.
![tidal flow diagram](../../../../webdav/site/GSL/shared/images/education_and_careers/RockCycle/RocksAroundBritain/TidalFlow%20resized.jpg)
Heath End Sand Pit, Sussex
![Heath End Pit, Sussex](../../../../webdav/site/GSL/shared/images/education_and_careers/RockCycle/RocksAroundBritain/HeathendPit%20xtrawide.jpg)
![Bottom curves](../../../../jsp/jahia/templates/GSL/gsl_templates/img/keystage3/bottom_curve.gif)