Blue Clay
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| Layer | 3 of 5 |
|---|---|
| Blocks | clay, cyan terracotta, light grey terracotta, light blue terracotta |
| Thickness | 10–70 m |
| Above | Greensand |
| Below | Globigerina Limestone |
Blue Clay (Maltese: Tafal) is the soft grey-blue clay of Malta's rock layers. It forms the smooth slopes under the flat-topped hills, below the hard Upper Coralline Limestone cap.
In the world
- Blocks: clay, in bands with cyan, light grey and light blue terracotta, each band about 2 blocks thick and gently wavy.
- Thickness: 10–70 m.
Where to see it
- The slopes under the Xagħra plateau on Gozo: bare clay and blue-grey terracotta at the surface.
Coordinates
- Slopes under the Xagħra plateau:
/tp @s -10293 141 -13881
Mining
- Unlike vanilla clay, the Blue Clay carries ores.
- It is the one place in the world with whole hillsides of clay blocks.
See also
- Rock layers
- Globigerina Limestone: the layer below