Category Archives: Geology

New South Pacific Island Shows Fast-forming Geology

New Island Tonga

The new island is thought to be composed mainly of scoria (solidified basaltic lava filled with gas holes) and clearly defined layers of wet ash which were deposited close to the vent and can be observed in pictures taken of the new island. The island also boasts a vast green sulphurous lake. One visitor to the island said, “There are thousands of seabirds—all kinds, laying eggs on the island”…

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