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Diabase - YouTube

16.09.2016· Diabase or dolerite or microgabbro is a mafic, holocrystalline, subvolcanic rock equivalent to volcanic basalt or plutonic gabbro.Diabase dikes and sills are typically shallow intrusive bodies and ...

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Diabase - definition of diabase by The Free …

Define diabase. diabase synonyms, diabase pronunciation, diabase translation, English dictionary definition of diabase. ) n. A dark-gray to black, fine-textured igneous rock composed mainly of feldspar and pyroxene and used for monuments and as crushed stone. n 1. Diabase - definition of diabase by The Free Dictionary.

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Diabase - Simple English Wikipedia, the free …

Diabase (also known as dolerite or microgabbro) is an igneous rock that is often blue in colour. It is rich in magnesium and iron, and originally found under the crust of volcanoes. Dikes and sills in igneous rock are often made of diabase.

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Diabase | Scientific.Net

The experimental data suggest that different rocks have different magnetic susceptibility, and magentic susceptibility of igneous rocks is the highest and has big variation, that is represented by diabase, and these characteristics always react on identification of rock types quickly in the field operation and laboratory technique.

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Diabase | Definition of Diabase by Merriam-Webster

Diabase definition is - diorite. Recent Examples on the Web It's made of diabase traprock, which contains iron that causes the cliffs to look lumpen and rusty in the wrong light, precise and resplendent in the right one. — Christian Wiman, Harper's magazine, "The Cancer Chair," 20 Jan. 2020 These example sentences are selected automatically from various online news sources to reflect ...

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Diabase | Project Gutenberg Self-Publishing - …

Diabase: | | ||| | Diabase | | | | |Diabase| ... World Heritage Encyclopedia, the aggregation of the largest online encyclopedias available, and the most definitive ...

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Dolerit – Wikipedia

Dolerit (griech. δολερός (dolerós): listig, trügerisch) ist ein subvulkanisches Ganggestein, das chemisch und mineralogisch dem vulkanischen Basalt bzw. dem plutonischen Gabbro entspricht.. International wird Dolerit auch als diabase bezeichnet. Weil im deutschen Sprachraum der Name Diabas in älterer Literatur oft einen geologisch alten, alterierten (d. h. im Mineralbestand ...

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Rocks of Pennsylvania | Sciencing

Igneous rocks are also formed when lava cools on the Earth's surface. This type of rock often contains mineral deposits. Granite, pegmatite, rhyolite and diabase are a few specific types of igneous rock found throughout Pennsylvania. Many types of igneous rocks like granite are some of the hardest types of rock …

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Diabase Rock | History | Origin - Compare Nature

From Stone Age, rocks are used for various purposes. Also, the metals and minerals found in rock play an important role in our life. Get to know all the Diabase Uses. We have provided you with all information about Diabase rock here. Diabase is a fine-grained igneous rock …

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Diabase - Igneous Rocks

Diabase is composed of plagioclase feldspar (mostly labradorite) and pyroxene ().The crystals that make up dolerite are usually visible to the naked eye, but sometimes porphyritic rocks of basaltic composition with pyroxene and especially plagioclase phenocrysts are also named that way. Ophitic texture (randomly oriented plagioclase laths enclosed by pyroxene grains) is a characteristic ...

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Diabase vs Dolerite - What's the difference? | …

Dolerite is a synonym of diabase. Diabase is a synonym of dolerite. As nouns the difference between diabase and dolerite is that diabase is (geology) a fine-grained igneous rock composed mostly of pyroxene and feldspar while dolerite is (geology) a fine-grained basaltic rock.

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Common Beach Stone Identification (Including …

Diabase (Dolerite - Older Term) is a dark rock that may have light colored lath shaped (flat elongated) grains. Like basalt, rhyolite and gabbro, diabase is a Michigan volcanic rock, only less commonly found along the shoreline as a beach worn cobbler or boulder stone. It is equivalent to gabbro and basalt in composition, but between them in ...

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Basalt vs Diabase - Compare Rocks

Basalt vs Diabase Characteristics. Though some rocks look identical, they have certain characteristics which distinguish them from others. Characteristics of rocks include texture, appearance, color, fracture, streak, hardness etc. Basalt vs Diabase characteristics assist us to distinguish and recognize rocks.

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Diabase | Loudoun County, VA - Official Website

Diabase is a hard, brittle rock used as a base component for construction of roads and for building foundations. There are defined belts of this rock, also known as trap rock, south of Leesburg and near Washington Dulles International Airport. The crushed-stone quarries that extract diabase are a substantial economic resource.

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Diabase vs Dolerite - What's the difference? | …

Dolerite is a synonym of diabase. Diabase is a synonym of dolerite. As nouns the difference between diabase and dolerite is that diabase is (geology) a fine-grained igneous rock composed mostly of pyroxene and feldspar while dolerite is (geology) a fine-grained basaltic rock.

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Diabase - hyperleap.com

The term basalt is at times applied to shallow intrusive rocks with a composition typical of basalt, but rocks of this composition with a phaneritic (coarser) groundmass are generally referred to as diabase (also called dolerite) or, when more coarse-grained (crystals over 2 mm across), as gabbro. Common mafic rocks include basalt, diabase and gabbro. The Palisades Sill is a Triassic, 200 Ma ...

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Geologic units containing Diabase - USGS

Diabase - Concordant to discordant, predominantly sheet-like intrusions of medium- to fine-grained diabase and dikes of fine-grained diabase; dark-greenish-gray to black; subophitic texture. Dense, hard, sparsely fractured rock composed mostly of plagioclase (An50-70), clinopyroxene (mostly augite), and magnetite-ilmenite.

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Where can dolerite rocks be found Yahoo Answers

Diabase vs Limestone Compare Nature. Diabase is a finegrained igneous rock which is composed mostly of pyroxene and feldspar Limestone is a sedimentary rock composed mostly of calcite and aragonite which are different crystal forms of calcium carbonate These rocks are composed of many distinct minerals The process of formation of rocks is different for various rocks

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Category:Diabase - Wikimedia Commons

English: Diabase or Dolerite is a mafic, holocrystalline, subvolcanic rock equivalent to volcanic basalt or plutonic gabbro.In North American usage, the term diabase refers to the fresh rock, whilst elsewhere the term dolerite is used for the fresh rock and diabase refers to altered material. Diabase dikes and sills are typically shallow intrusive bodies and often exhibit fine grained to ...

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The Density of Common Rocks and Minerals - …

Rock density is very sensitive to the minerals that compose a particular rock type. Sedimentary rocks (and granite), which are rich in quartz and feldspar, tend to be less dense than volcanic rocks. And if you know your igneous petrology, you will see that the more mafic (rich in magnesium and iron) a rock is, the greater its density.

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What defines a "Diabase"? : geology

When I googled "Diabase", I am told that it is a black fine grained intrusive igneous rock. As far as minerals go, it is mostly comprised of types of plagioclase and types of pyroxenes. When I go to a ternary diagram for intrusive igneous rocks, I don't see Diabase as an option.

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Formation of Diabase | Composition - Compare …

Formation of Diabase is explained below: Diabase forms when molten igneous rock is squeezed up into a vertical crack in other rocks, the crack is usually forced apart and the molten rock cools in the space to form a tabular igneous intrusion cutting across the surrounding rocks and is known as a dike.

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Category:Diabase - Wikimedia Commons

English: Diabase or Dolerite is a mafic, holocrystalline, subvolcanic rock equivalent to volcanic basalt or plutonic gabbro.In North American usage, the term diabase refers to the fresh rock, whilst elsewhere the term dolerite is used for the fresh rock and diabase refers to altered material. Diabase dikes and sills are typically shallow intrusive bodies and often exhibit fine grained to ...

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Diabase - hyperleap.com

The term basalt is at times applied to shallow intrusive rocks with a composition typical of basalt, but rocks of this composition with a phaneritic (coarser) groundmass are generally referred to as diabase (also called dolerite) or, when more coarse-grained (crystals over 2 mm across), as gabbro. Common mafic rocks include basalt, diabase and gabbro. The Palisades Sill is a Triassic, 200 Ma ...

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