Which one among the following is the type of the Comoros Islands which lie in the Indian Ocean between Northern Mada- gascar and the African Coast ?

The Comoros Islands, located in the Mozambique Channel between northern Madagascar and the African coast, are a volcanic archipelago [2]. The chain consists of four main islands—Grande Comore, Moh li, Anjouan, and Mayotte—which were formed by hotspot mantle plume activity and rifting processes associated with the East African Rift System [3]. Grande Comore, the largest and youngest island, remains volcanically active, featuring the Karthala shield volcano [1]. Geological evidence indicates a chronological sequence of formation from east to west, with volcanic activity starting approximately 11 to 32 million years ago [1]. Unlike the coral-based Laccadives or Maldives, the Comoros are characterized by steep volcanic peaks and basaltic lavas, confirming their classification as volcanic islands rather than glacial, eolian, or folded structures [3].

Sources

1. [1] https://www.sciencedirect.com/topics/earth-and-planetary-sciences/comoros
2. [2] Certificate Physical and Human Geography , GC Leong (Oxford University press 3rd ed.) > Chapter 11: Islands and Coral Reefs > Oceanic islands > p. 98
3. [3] https://en.wikipedia.org/wiki/Geology_of_Mayotte