Upon entering Tamil Nadu, the Kaveri continues through a series of twisted wild gorges until it reaches Hogenakal Falls and flows through a straight, narrow gorge.... "Kaveri River". Encyclopædia Britannica. Retrieved 6 March 2012.
Natarajana, M; Bhaskar Rao, B; Parthasarathy, R; Kumar, Anil; Gopalan, K (1994). "2.0 Ga old pyroxenite-carbonatite complex of Hogenakal, Tamil Nadu, South India". Precambrian Research. 65 (1–4): 167–81. doi:10.1016/0301-9268(94)90104-X. INIST3910799.
Natarajana, M; Bhaskar Rao, B; Parthasarathy, R; Kumar, Anil; Gopalan, K (1994). "2.0 Ga old pyroxenite-carbonatite complex of Hogenakal, Tamil Nadu, South India". Precambrian Research. 65 (1–4): 167–81. doi:10.1016/0301-9268(94)90104-X. INIST3910799.