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 ...... Most of the country of India is a triangular-shaped peninsula that juts into the Indian Ocean. Due to its central location on the Indian Ocean between China and the Middle East, India became the ancient world's largest trading center.India also gave the world important new ideas including the numbering system we use today and the religions of Hinduism and Buddhism.sia is the world's largest continent, sharing the landmass of Eurasia with Europe. The Ural Mountains of Russia are considered the dividing line between Asia and Europe. Asia was the site of three of the world's earliest civilizations in Mesopotamia, India and China.