Why was iceland called iceland?

Flóki Vilgerðarson was the third settler of Iceland. Before it had been called Snowland and Gardar's islet. Flóki settled on the south coast of the island's tail, which is known for it's vibrant geology and is covered in fjords (inlets from the sea with steep sides and water flowing in). Spending the winter there, in the spring Flóki saw ice drifts coming into the fjord near where he settled and decided to name it Iceland.