Antigua's soil is primarily composed of volcanic ash, which is a key contributor to its agricultural productivity. However, the island also has pockets of clay and sand soil, making for a diverse landscape.

Here are three specific soil types found in Antigua:

1. Andosols: These are volcanic ash soils, rich in nutrients and organic matter. They are highly fertile and support diverse agricultural activities, especially sugar cane and cotton.

2. Ferralsols: These are clay-rich soils that develop in humid tropical environments. They are often found in areas with high rainfall and can be highly fertile, but can also be prone to erosion.

3. Arenosols: These are sandy soils formed from the weathering of volcanic rocks. They are generally low in nutrients and can be prone to drought.

It's important to note that these are just a few examples, and Antigua's soil types can vary depending on location and specific geological features.