International Rock Day has been created so that people all around the world can learn more about rocks. It’s not about rock and roll music; it’s all about the stone variety! After all, rocks play a big role in the environment, and they have been used by humans for many purposes over the years.
Three major groups of rocks are defined: igneous, sedimentary, and metamorphic. The scientific study of rocks is called petrology, which is an essential component of geology. At a granular level, rocks are composed of grains of minerals, which, in turn, are homogeneous solids formed from a chemical compound that is arranged in an orderly manner.
The aggregate minerals forming the rock are held together by chemical bonds. The types and abundance of minerals in a rock are determined by the manner in which the rock was formed. Many rocks contain silica (SiO2); a compound of silicon and oxygen that forms 74.3% of the Earth’s crust. This material forms crystals with other compounds in the rock. The proportion of silica in rocks and minerals is a major factor in determining their name and properties.
The stamp depicts the Vivekananda Rock Memorial which is a monument and popular tourist attraction in Kanyakumari, India's southernmost tip. The memorial stands on one of the two rocks located about 500 meters off mainland of Vavathurai. It was built in 1970 in honour of Swami Vivekananda, who is said to have attained enlightenment on the rock. According to legends, it was on this rock that Goddess Kanyakumari (Parvathi) performed tapas in devotion of lord Shiva. A meditation hall known as Dhyana Mandapam is also attached to the memorial for visitors to meditate. The design of the mandapa incorporates different styles of temple architecture from all over India.The rocks are surrounded by the Laccadive Sea where the three oceans Bay of Bengal, the Indian Ocean and the Arabian Sea meets. The memorial consists of two main structures, the Vivekananda Mandapam and the Shripada Mandapam
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