| Beavers, through their dam-building efforts, had reduced the erosive power of the San Pedro. |
| These often overlie distal bayhead delta mouthbar facies, and commonly have a sharp erosive base. |
| They often occur in cavities which have been formed by the erosive action of acidulated water, in the way described in pars. |
| A developing young pellicle will hardly be a diffusion barrier to an erosive agent. |
| Land is also being protected from the erosive forces of the sea by rock jetties that extend out to sea. |
| The erosive action of the sea, from our present point of view, is of comparatively little importance. |
