What kind of rock is basalt? - Answers
Basalt is an extrusive igneous rock, which means it has solidified from magma above ground. It is a mafic rock, meaning that it is relatively high in heavier element content, particularly ...
Basalt is an extrusive igneous rock, which means it has solidified from magma above ground. It is a mafic rock, meaning that it is relatively high in heavier element content, particularly ...
Igneous Rocks Igneous rocks are formed by the cooling of molten rock. There are two major states of molten rock: Magma and Lava. Magma is a form of molten rock that exists below the Earth's surface. Lava is the term given to magma once it reaches the Earth's surface, usually in the form of a volcanic eruption. There are two major classifications of igneous rocks: Intrusive and
Definition of Basalt. 1. a volcanic rock [n -S] : BASALTIC [adj] Medical Definition of Basalt. 1. 1. A rock of igneous origin, consisting of augite and triclinic feldspar, with grains of magnetic or titanic iron, and also bottle-green particles of olivine frequently disseminated. It is usually of a greenish black colour, or of some dull brown ...
Igneous rocks (from the Latin word for fire) form when hot, molten rock crystallizes and solidifies. The melt originates deep within the Earth near active plate boundaries or hot spots, then rises toward the surface. Igneous rocks are divided into two groups, intrusive or extrusive, depending upon where the molten rock solidifies.
Lava Rock or Basalt is the most common type of volcanic rock on the planet. Scientists consider the oceanic crust to be composed of Basalt. Also, many oceanic islands were formed on volcanic rocks. These are the Faroe Islands, Hawaii, Reunion and Iceland. Basalt is …
ba·salt (bə-sôlt′, bā′sôlt′) n. 1. A hard, dense, dark igneous rock composed chiefly of plagioclase feldspar, pyroxene, and olivine, and often having a glassy appearance. 2. A kind of hard unglazed pottery. [From New Latin basaltēn, a misreading (in manuscripts of Pliny) of Latin basanītēn, accusative of basanītēs, a word Pliny uses of ...
noun. 1 A dark, fine-grained volcanic rock that sometimes displays a columnar structure. It is typically composed largely of plagioclase with pyroxene and olivine. 'Further up section the geology is dominated by a succession of unmetamorphosed but strongly fractured and veined blocky andesites, basalts and tuffaceous rocks.'.
The rock assemblages of the bayinbuluke formation are mainly alkaline basalt - thick andesite - alkaline rhyolite 。 It belong series of the alkaline basalt, and have character of island ocean in geochemistry and petrochemistry 、, ...
Basalt definition, the dark, dense igneous rock of a lava flow or minor intrusion, composed essentially of labradorite and pyroxene and often displaying a columnar structure. See more.
Basalt is an igneous volcanic rock that is basically molten lava that has solidified under intense heat and pressure. Basalt can be any color from grey to black. Basalt is also known as Lava Rock. Since basalt is formed from molten lava, and molten lava was …
Alternatively, rocks like basalt and obsidian have very small grains and a relatively fine texture. This happens because when magma erupts into lava, it cools more quickly than it would if it stayed inside the earth, giving crystals less time to form. Obsidian cools into volcanic glass so quickly when ejected that the grains are impossible to ...
Define basalt. basalt synonyms, basalt pronunciation, basalt translation, English dictionary definition of basalt. n. 1. A hard, dense, dark igneous rock composed chiefly of plagioclase feldspar, pyroxene, and olivine, and often having a glassy appearance. 2.
Basalt is an aphanitic extrusive igneous rock formed from the rapid cooling of low-viscosity lava rich in magnesium and iron exposed at or very near the surface of a rocky planet or moon. More than 90% of all volcanic rock on Earth is basalt. Rapid-cooling, fine-grained basalt is chemically equivalent to slow-cooling, coarse-grained gabbro.
Basalt is a dark-colored, fine-grained, igneous rock composed mainly of plagioclase and pyroxene minerals. It most commonly forms as an extrusive rock, such as a lava flow, but can also form in small intrusive bodies, such as an igneous dike or a thin sill. It has a composition similar to gabbro. The difference between basalt and gabbro is that ...
Basalt definition: Basalt is a type of black rock that is produced by volcanoes . | Meaning, pronunciation, translations and examples
Basalt, extrusive igneous (volcanic) rock that is low in silica content, dark in color, and comparatively rich in iron and magnesium. Basalts may be broadly classified on a chemical and petrographic basis into two main groups: the tholeiitic and the alkali basalts. Learn more about basalt in this article.
Both basalt and granite are types of rock, and a rock is composed of multiple minerals - except for some rocks composed of essentially one mineral like limestone (calcite) or quartzite (quartz).
Basalt definition is - a dark gray to black dense to fine-grained igneous rock that consists of basic plagioclase, augite, and usually magnetite.
noun. 1 A dark fine-grained volcanic rock that sometimes displays a columnar structure, typically composed largely of plagioclase with pyroxene and olivine. 'Further up section the geology is dominated by a succession of unmetamorphosed but strongly fractured and veined blocky andesites, basalts and tuffaceous rocks.'. 'These are ...
Basalt is a kind of volcanic rock. It is categorized in igneous rocks that are made from magma cooled suddenly. It is a basic kind of rock that makes the surface of the Earth. People are receiving the power of Basalt a lot without noticing it. More than 90% of the volcanos on the Earth is made of Basalt.
Lava Stone, (also known as Basalt, or Lava Rock) is an igneous volcanic rock. It has solidified from molten lava, after conditions of intense heat and pressure. Lava Stone Associations. Chakras - Base Chakra Zodiac - Taurus, Cancer Planet - Earth Element - Fire & Earth Numerical Vibration - Number 1
Basalt is a major rock type that occurs in virtually every tectonic setting. Basalt is clearly the most common volcanic rock on Earth and basaltic rocks (including gabbro, diabase and their metamorphosed equivalents) are the most common rocks in the crust 2.Basalt is also common on the Moon and other rocky planets of the Solar System.
Basalt has a strict chemical definition. It is defined in the TAS diagram shown above. Basalt is an igneous rock that contains more than 45 and less than 52% of SiO2 and less than five percent of total alkalies (K2O + Na2O)3. Types of Basalt Basalt types: tholeiites vs alkali basalts. Tholeiitic basalt is relatively rich in silica and poor in ...
By definition, basalt is an aphanitic (fine-grained) igneous rock with generally 45-55% silica (SiO2) and less than 10% feldspathoid by volume, and where at least 65% of the rock is feldspar in the form of plagioclase. It is the most common …
Igneous rock (derived from the Latin word ignis meaning fire), or magmatic rock, is one of the three main rock types, the others being sedimentary and metamorphic.Igneous rock is formed through the cooling and solidification of magma or lava.. The magma can be derived from partial melts of existing rocks in either a planet's mantle or crust.Typically, the melting is caused by one or more of ...
noun (Geol.) A rock of igneous origin, consisting of augite and triclinic feldspar, with grains of magnetic or titanic iron, and also bottle-green particles of olivine frequently disseminated. noun An imitation, in pottery, of natural basalt; a kind of black porcelain.
Greenstone. In Minnesota, greenstone is somewhat younger than the gneiss. Greenstone is a weakly metamorphosed basalt that is greenish to gray. This type of rock formed about 2.7 billion years ago, when the area that is now northern Minnesota was part of a volcanic island arc, much like the islands of Japan are today.
Interesting Basalt Facts: The word basalt comes from a Latin word meaning very hard stone. Though basalt is typically a dark, black rock, weathering can lead to a yellow-brown color. A light-color basalt is rare, but can be found due to a high concentration of plagioclase and weathering.
What does basalt mean? A hard, dense, dark igneous rock composed chiefly of plagioclase feldspar, pyroxene, and olivine, and often having a gla...
Basalt: Granite: Definition: Basalt is a dark igneous rock of a lava flow or minor intrusion composed of labradorite and pyroxene. Granite is a coarse-grained igneous rock composed of orthoclase and albite feldspars and quartz. Composition: Basalt is composed of Mafic. Granite is composed of Felsic. Surface Location: Basalt is an Extrusive ...