The volume was brought out to commemorate the birth centenary of Dr. B.P. Radhakrishna, former Director of Department of Mines and Geology, President of the Geological Society of India and a doyen of Indian geology. It contains selected 25 landmark contributions spanning over the period from 1952 to 2008 which had significant bearing on the then existing knowledge, published in Journal of Geological Society of India and various other Journals. The papers are presented under four sections: 1. Archaean History of the Earth, 2. Geomorphological Studies, 3. Mineral Resources Development, and???? 4. Water, Environment and Ecology; each section prefaced with editorial comments by Dr. R. Srinivasan, Prof. R. Vaidyanadhan, Dr. M.S. Rao and Mr. Subhajyothi Das, respectively.