Disk

{
    "title": "Disk",
    "rows": [
        {
            "field": "Depends",
            "label": "(link to Biome article, displayed as Biomes)"
        },
        {
            "field": "No",
            "label": "Generates in<br>existing chunks  "
        },
        {
            "field": "(values exceeds 1000 characters...)",
            "label": "Consists of"
        }
    ],
    "invimages": [],
    "images": []
}

A disk is a feature consisting of a naturally generated roughly circular deposit of a soil-like block under or next to bodies of water.

Disks are generated at the Euclidean distance n (i.e. x²+y²=n²) from a given central block, creating a circular-looking pattern of the given block with a radius of n. They are commonly seen throughout rivers, shallow oceans, swamps, and mangrove swamps.

Block	Replaces blocks	Minimum size (n)	Maximum size (n)	Biomes
Sand, Sandstone (When above air)	Dirt, Grass Block	2	6	All Overworld biomes except swamp, mangrove swamp, and swamp hills‌[BE only](Unused)
Gravel	Dirt, Grass Block	2	5	All Overworld biomes except swamp, mangrove swamp, and swamp hills‌[BE only](Unused)
Clay	Dirt, Clay	2	3	All Overworld biomes except desert and snowy plains
Grass Block, Dirt (when under solid-material block or Water)	Dirt, Mud	2	6	mangrove swamp

Java Edition:

Feature type	Identifier
[No displayed name]	disk

Configured feature	Identifier
Clay Disk	disk_clay
Grass Disk	disk_grass
Gravel Disk	disk_gravel
Sand disk	disk_sand

Bedrock Edition:

Feature	Identifier
Clay Disk	clay_feature
Gravel Disk	gravel_feature
Sand Disk	sand_feature
Grass Disk	grass_disc_feature

Java Edition:

{
  "type": "minecraft:disk",
  "config": {
    "half_height": 1,
    "radius": {
      "type": "minecraft:uniform",
      "value": {
        "max_inclusive": 3,
        "min_inclusive": 2
      }
    },
    "state_provider": {
      "fallback": {
        "type": "minecraft:simple_state_provider",
        "state": {
          "Name": "minecraft:clay"
        }
      },
      "rules": []
    },
    "target": {
      "type": "minecraft:matching_blocks",
      "blocks": [
        "minecraft:dirt",
        "minecraft:clay"
      ]
    }
  }
}

Issues relating to "Disk" are maintained on the bug tracker. Issues should be reported and viewed there.

• 
  A lake in a flower forest with overlapping disks of sand, clay, gravel, and dirt.
• 
  A disk generated in a swamp biome.
• 
  A gravel disk next to a river.

• Clay blob, a terrain feature before Beta 1.8 Pre-release.