Anamudi is located within a larger tectonic province, a Neoproterozoicmobile belt known as the Southern Granulite Terrane (SGT) or Pandyan Mobile Belt. This geologic province represents an area of Archean rocks that were deeply buried during the neoproterozoic Pan-African Orogeny, as part of the Mozambique Belt, in which developed Himalayan-scale mountains when West and East Gondwana collided due to the closure of the ancient Mozambique Ocean. Specifically, Anamudi is located within a geological sub-province of the SGT known as the Madurai Province. The mountain massif itself is composed of neoproterozoic A-type granite known as Munnar Granite, which was intruded deep into the thickened crust of the SGT during Orogenic collapse of the Pan-African highlands. After approximately 800-500 million years of burial, the Munnar Granite of the Anamundi massif is now exposed high above sea level due to a combination of faulting and unroofing.[11]
12Hunter, William Wilson; James Sutherland Cotton; Richard Burn; William Stevenson Meyer; Great Britain India Office (1909). The Imperial Gazetteer of India. Vol.11. Clarendon Press. Archived from the original on 16 December 2008.
↑Brandt, Sönke; Raith, Michael M.; Schenk, Volker; Sengupta, Pulak; Srikantappa, C.; Gerdes, Axel (31 January 2014). "Crustal evolution of the Southern Granulite Terrane, south India: New geochronological and geochemical data for felsic orthogneisses and granites". Precambrian Research. 246: 91–122. doi:10.1016/j.precamres.2014.01.007.