Ocean Floor - Clay Sand and Dirt
Spawns patches of Clay, Sand, and Dirt, within the Deep Dcean layer of boring gravel.
Spawn rates and sizes controlled in the config file:
If you link to this page and let me know somehow (comment or twitter @lothrazar), you can use this in a modpack.
Requires Minecraft Forge version 1.8-220.127.116.116 or higher, from http://files.minecraftforge.net/