The rock types identified in this complex are gabbros (tholeiitic and alkalic), diorites, lamprophyres, alkali-syenites and rhyolites.
The parent gabbroic magma is shown to have given rise in sequence to diorites, lamprophyres and alkali-syenites.
This mountain was considered holy to Buddhists as well.
Mount Girnar is a major igneous plutonic complex which intruded into the basalts towards the close of the Deccan Trap period.
On the same rock can be found an inscription of the Western Satrap ruler Rudradaman, the Junagadh rock inscription of Rudradaman.
At about 200 metres from the gate, to the right of the road, is the Temple of Wagheshwari (Upale Vagheshwari maa), which is joined to the road by a causeway about 150 yards long.Lord Shri Krishna lured Kalayavana into the cave where the great king of Tretayug, Muchukunda, one of the forefathers of Lord Shri Rama was in a deep slumber of thousands of years after helping Devas in an epic war with Asuras.Contemplating an absolutely undisturbed sleep he was given a boon that anyone who dared to disturb his sleep would get burnt to ashes immediately.Girnar, also known as Girinagar ('city-on-the-hill') or Revatak Parvata, is a group of mountains in the Junagadh District of Gujarat, India, situated near Junagadh.Is considered older than the Himalayas, Girnar, the mountain and its range are considered sacred.
The rhyolite, though earlier considered a product of differentiation, is now believed to be an independent magma without any genetic link with the gabbro and its variants.