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See all on WikipediaMafic - Wikipedia
A mafic mineral or rock is a silicate mineral or igneous rock rich in magnesium and iron. Most mafic minerals are dark in color, and common rock-forming mafic minerals include olivine, pyroxene, amphibole, and biotite. Common mafic rocks include basalt, diabase and gabbro. Mafic rocks often also … See more
The term mafic is a portmanteau of "magnesium" and "ferric" and was coined by Charles Whitman Cross, Joseph P. Iddings See more
The term mafic is still widely used for dark-colored ferromagnesian minerals. Modern classification schemes, such as the International Union of … See more
When applied to rocks, the term mafic is used primarily as a field term to describe dark-colored igneous rocks. The term is not used as a rock classification in the IUGS classification … See more
Wikipedia text under CC-BY-SA license Ultramafic rock - Wikipedia
Ultramafic rocks (also referred to as ultrabasic rocks, although the terms are not wholly equivalent) are igneous and meta-igneous rocks with a very low silica content (less than 45%), generally >18% MgO, high FeO, low potassium, and are composed of usually greater than 90% mafic minerals (dark colored, high magnesium and iron content). The Earth's mantle is composed of ultramafic rock…
Wikipedia · Text under CC-BY-SA license- Estimated Reading Time: 4 mins
Mafic - Simple English Wikipedia, the free encyclopedia
WEBMafic is an adjective describing a silicate mineral or igneous rock which is rich in magnesium and iron. The term is a portmanteau, made up from "magnesium" and …
- Estimated Reading Time: 1 min
Gabbro - Wikipedia
WEBGabbro (/ ˈ ɡ æ b. r oʊ /) is a phaneritic (coarse-grained), mafic intrusive igneous rock formed from the slow cooling of magnesium-rich and iron-rich magma into a …
Anorthosite - Wikipedia
WEBAnorthosite (/ ə ˈ n ɔːr θ ə s aɪ t /) is a phaneritic, intrusive igneous rock characterized by its composition: mostly plagioclase feldspar (90–100%), with a minimal mafic component …
Diabase - Wikipedia
WEBDiabase (/ ˈ d aɪ. ə ˌ b eɪ s /), also called dolerite (/ ˈ d ɒ l. ə ˌ r aɪ t /) or microgabbro, is a mafic, holocrystalline, subvolcanic rock equivalent to volcanic basalt or plutonic gabbro. …
- More about maficadjectivegeology
- relating to, denoting, or containing a group of dark-colored, mainly ferromagnesian minerals such as pyroxene and olivine. Often contrasted with felsic
Mafic rock | Igneous, Basaltic, Magma | Britannica
WEBmafic rock, in geology, igneous rock that is dominated by the silicates pyroxene, amphibole, olivine, and mica. These minerals are high in magnesium and ferric oxides, and their …
Layered intrusion - Wikipedia
WEBMafic-ultramafic layered intrusions occur at all levels within the crust, from depths in excess of 50 km (160,000 ft) to depths of as little as 1.5–5 km (5,000–16,000 ft). The depth at …
Mafic | Encyclopedia.com
WEBMay 23, 2018 · Mafic is an invented adjective based on the chemical symbols for magnesium (Ma) and iron (Fe): Ma-Fe-ic, mafic. Mafic is sometimes used as a synonym …
What Are Mafic Rocks, their Composition and Examples
WEBDec 10, 2023 · Mafic rocks are dark-colored igneous rocks rich in magnesium and calcium. These rocks are rich in minerals like pyroxene, olivine, hornblende, and biotite …
Felsic and mafic rocks | Igneous, Granitic & Rhyolitic Types
WEBIn a widely accepted silica-content classification scheme, rocks with more than 65 percent silica are called felsic; those with between 55 and 65 percent silica are intermediate; …
Felsic - Wikipedia
WEBFelsic refers to silicate minerals, magma, and rocks which are enriched in the lighter elements such as silicon, oxygen, aluminium, sodium, and potassium. Felsic magma or …
mafic – An Introduction to Geology
WEBmafic. Can refer to a volcanic rock with lower silica composition, or the minerals that make up those rocks, namely olivine, pyroxene, amphibole, and biotite. Mafic rocks are darker …
mafic - Wiktionary, the free dictionary
WEBJun 14, 2024 · Mafic is a geological term for rocks with high magnesium and iron content. Learn the etymology, pronunciation, synonyms, antonyms, and translations of mafic in …
Magma | Components, Types, & Facts | Britannica
WEBJun 8, 2024 · Basaltic (or mafic) magma predominates in nonexplosive volcanic eruptions. It is a high-temperature magma (1,200 °C [about 2,200 °F]) characterized by flowing …
Mafic | Geology Wiki | Fandom
WEBMafic minerals and rocks are silicate minerals, magmas, and volcanic and intrusive igneous rocks that have relatively high concentrations of the heavier elements (See Chemistry …
Mafic Rocks | Definition, Composition & Examples | Study.com
WEBNov 21, 2023 · Learn about mafic rocks, also known as mafic igneous rocks. Discover the mafic definition, composition of mafic minerals, and see mafic igneous rock examples. …
13 Metamorphism of Mafic and Ultramafic Rocks – Open Petrology
WEBA metamorphic facies is a general range of P-T conditions that produces distinctive looking rocks. We differentiate facies based on the metamorphic minerals present, on rock color …
Magma's Role in the Rock Cycle - National Geographic Society
WEBApr 26, 2024 · Magma is a molten and semi-molten rock mixture found under the surface of Earth. This mixture is usually made up of four parts: a hot liquid base, called the melt; …
Low-Elevation Outcrop Barrens - Department of Conservation …
WEBMar 4, 2021 · Low-Elevation Outcrop Barrens. This group comprises very sparse woodlands, scrub, and herbaceous vegetation of exposed outcrops up to about 975 m …
Mafic Definition & Meaning - Merriam-Webster
WEBThe meaning of MAFIC is of, relating to, or being a group of usually dark-colored minerals rich in magnesium and iron.
Mafic Facts for Kids | KidzSearch.com
WEBMafic is an adjective describing a silicate mineral or igneous rock which is rich in magnesium and iron. The term is a portmanteau, made up from "magnesium" and …
Mafic – Wikipedia tiếng Việt
WEBMafic. Trong địa chất học, các khoáng chất và đá mafic là các khoáng chất silicat, macma, đá lửa do núi lửa phun trào hoặc xâm nhập có tỷ lệ các nguyên tố hóa học nặng khá …
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