Igneous rock the partial melting of rocks within the mantle and crust. Extrusive igneous rocks cool and solidify quicker than intrusive igneous rocks. They are formed by the cooling of molten magma on the earth's surface. The magma, which is brought to the surface through fissures or volcanic eruptions, solidifies at a faster rate. Hence such rocks are smooth, crystalline and fine-grained. Basalt is a common extrusive igneous rock and forms lava flows, lava sheets and lava plateaus. Some kinds of basalt solidify to form long polygonal columns. The Giant's Causeway in Antrim, Northern Ireland is an example. The molten rock, with
S. S. Vasan values to have become almost the blueprint for formula films of India. Gemini was also the first to pioneer innovative marketing and PR plans for the release of films including the first to use the concept of giant 'cut-outs' and billboards beginning with Chandralekha. A vast number of reigning film and media professionals came out from the mentorship or employment of Gemini Studios. Selected and available filmography has been listed. S. S. Vasan Subramaniam Srinivasan (4 January 1904 – 26 August 1969), popularly known by his screen name S. S. Vasan, was an Indian journalist, writer, advertiser, film producer, director