India Post issued this stamp on 14th December 1964 in commemoration of the XXII International Geological Congress (IGC).

The XXII IGC held in New Delhi in 1964 was a landmark event in the field of geological sciences. The gathering brought together geologists from across the world to discuss a wide array of geological topics and share their research findings.

The Congress was supported by the United Nations Educational, Scientific and Cultural Organisation (UNESCO), which promoted international collaboration in the field of geological sciences. UNESCO's participation helped facilitate the exchange of knowledge and fostered cooperation among geologists from different countries.

The Congress was notable for its comprehensive coverage of geological subjects, including Archaean and Precambrian geology, the geological results of the International Indian Ocean Expedition, and numerous abstracts of papers presented during the sessions. The findings and discussions from the Congress have been referenced in subsequent geological research and publications, highlighting its lasting impact on the field.