Archaean rocks formations of Tirumala Hills.
The boundary between two ancient rock groups denoting enormous time gap in the evolution of earth's crust is called the Eparchaean Unconformity
Licensing
User:Elavana, the copyright holder of this work, hereby publishes it under the following license:
The person who associated a work with this deed has dedicated the work to the public domain by waiving all of their rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law. You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission.
http://creativecommons.org/publicdomain/zero/1.0/deed.enCC0Creative Commons Zero, Public Domain Dedicationfalsefalse