FELSIC VOLCANICS INTERLAYERED WITH SEDIMENTS OF THE MARWAR-SUPERGROUPAT CHHOTI-KHATU, DISTRICT NAGAUR, RAJASTHAN

A thick pile of undeformed and unmetamorphosed sediments exposed to th e west of the Aravalli mountain range in Rajasthan, earlier known as t he Trans-Aravalli Vindhyans and rater renamed as the Marwar Supergroup , are considered to rest unconformably over the Malani Igneous Suite o f rocks. Felsic volcanics have been observed around Chhoti Khatu, in N agaur district for the first time interlayered with sediments of the M arwar Supergroup. They occur sandwiched between the underlying Sonia F ormation and the overlying Girbhakar Formation of the Jodhpur Group (t he Marwar Supergroup). This interesting relationship may help in decid ing the age of the Marwar Supergroup.