IELTS Writing Task 1 Map Diagram – Example 6
You should spend about 20 minutes on this task.
Write at least 150 words.
The diagram below gives information about the Hawaiian island chain in the centre of the Pacific Ocean.
Write a report for a university lecturer describing the information shown.
|The map represents the Hawaiian island chain, it is located in the heart of the Pacific Ocean. As shown, it is formed of volcanoes and the active volcanoes are located at the south-east tip, where Hawaii is located. It also shows how the volcano eruption occurs.
It is shown that the chain began to form almost 80 million years ago on the solid dense rock bed and each island started to evolve after an eruption on the seafloor. A hot spot existed on the ocean bed, which let out the material which is known as the magma. Moreover, the hot spot remained static. Hence, magma spume was formed and this magma originated from as deep as 2,883 km below the ocean bed. Eruptions took place and a volcano was formed above the surface of the ocean.
Later, the spume of magma has remained inactive as the Pacific tectonic plate moves in a north-west direction across it, at an annual speed of 7-9 centimetre. The other major islands in the Pacific ocean are Niihau, Kauai, Oahu, Molokai, Maui, Lanai and Kahoolawe which are located from 0-100 kilometres away from each other.