GSI and UPSC aspirants, answer the following questions
GSI – Write short notes on each of the following:
(a) Significance of cross bedding and current beddings.
(b) Distinguish between Arkose and Greywacke.
UPSC – What are the criteria based on which indicator elements are selected for geochemical exploration of mineral deposits? Describe any two methods of interpreting geochemical data for recognition of geochemical anomaly.