Geology of the British Indian Ocean Territory carbonates, which are present in the Seychelles for reasons that are not clear—hypothesized to include local storm erosion. The offshore waters around the archipelago contain deep-sea ferromanganese nodules, with globular, dendritic and laminated microstructures formed from iron-manganese oxide. Due to the US military presence on the island the US Geological Survey has conducted water resource analysis since 1984. Geology of the British Indian Ocean Territory The geology of the British Indian Ocean Territory comprises the Chagos Archipelago—the above water portion of the Chagos Bank. Formed from hotspot volcanism, the Chagos Bank was separated from the Nazareth Bank 36 million years
Scattered Islands in the Indian Ocean each of the islands in the Mozambique Channel that are claimed by Madagascar. The Glorioso Islands are also claimed by the Comoros, while Mauritius claims Tromelin Island. France claims an Exclusive Economic Zone (EEZ) of 200 nautical miles around each of the small islands in the Îles Éparses, which together with the EEZ claims for the islands of Réunion and Mayotte totals more than one million square kilometres in the western Indian Ocean. There is considerable overlap of the EEZ with the neighbouring states. Scattered Islands in the Indian Ocean The Scattered Islands in the Indian Ocean ( or "Îles