Volcanoes and Volcanic Eruptions. Magmas and Lava. Since volcanic eruptions are caused by magma (a mixture of liquid rock, crystals, and dissolved gas) expelled onto the Earth's surface, we'll first review the characteristics of magma that we covered previously. Three basic types of magma: Mafic or Basaltic-- SiO2 45-55 wt%, high in Fe, Mg, Ca, low in K, Na.
EMEA: Europe, the Middle East and Africa, marked on a worldmap. EMEA (or EMEIA if India is included), is a shorthand designation meaning Europe, the Middle East and Africa. It is used by institutions, governments as well as in marketing and business. It is particularly common among North American companies. The region is generally accepted to include all European nations, all African Nations, and extends east to Iran, but including Russia. Typically this does not include independent overseas territories of mainland countries in the region, such as French Guyana.
India, which is located in the South Asia is the largest democracy of the world. It is the 7th largest country by area in world and the 2nd most populous country. The Indian Peninsula is bordered by India Ocean on the south, the Arabian Sea on the south-west, and the Bay of Bengal on the south-east.India shares its land border with Pakistan to the west; China, Nepal, and Bhutan to the north-east; and Burma and Bangladesh to the east.ndia is the seventh largest nation in the world, covering most of the Indian subcontinent in South Asia. As a peninsula, India is surrounded on three sides by the Indian Ocean, with the Arabian Sea along the west, and the Bay of Bengal along the east.