Igneous rock is formed through the cooling and solidification of magma or lava. Igneous rock may form with or without crystallization, either below the surface as intrusive (plutonic) rocks or on the surface as extrusive (volcanic) rocks.This magma can be derived from partial melts of pre-existing rocks in either a planet's mantle or crust.ntrusive igneous rocks are formed from magma that cools and solidifies within the crust of a planet, surrounded by pre-existing rock (called country rock); the magma cools slowly and, as a result, these rocks are coarse grained. The mineral grains in such rocks can generally be identified with the naked eye.
marital status - the condition of being married or unmarried. law, jurisprudence - the collection of rules imposed by authority; civilization presupposes respect for the law; the great problem for jurisprudence to allow freedom while enforcing order.
Filing status. Filing status is an important factor when computing taxable income under the federal income tax in the United States. The federal tax filing status defines the type of tax return form an individual will use. Filing status is based on marital status and family situation. A taxpayer will fall into one of five possible filing status categories: single individual, married person filing jointly or surviving spouse, married person filing separately, head of household and a qualifying widow with depend