Why in news?

• Geological Survey of India (GSI) has identified two geological heritage sites in the Indian Himalayan Region of India.
• Siwalik Fossil Park, Himachal Pradesh, displays a rich collection of vertebrate fossils recovered from the Siwalik rocks of the area of Plio-Pleistocene age.
• Stromatolite bearing Dolomite / Limestone of Buxa Formation at mamley, Sikkim, provides one of the rare examples of early life in Sikkim Himalaya.
• Geological Survey of India (GSI) declares geo-heritage sites/ national geological monuments for protection and maintenance. These sites are preserved in the respective States.