【texture】_texture_____ …

texture [ 'tekstʃə ] n. the feel of a surface or a fabric "the wall had a smooth texture" the essential quality of something "the texture of Neapolitan life" the musical pattern created by parts being played or sung together "then another melodic line is added to the texture" the characteristic appearance of a surface having a tactile quality

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Textures of Basalts and Gabbros

Ophitic definition, a diabase in which elongate crystals of plagioclase are embedded in pyroxene. See more.

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NWA 12839 - Lunar Meteorite

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Diabasic texture (mean grainsize 0.5 mm). Composed primarily of zoned clinopyroxene and maskelynite with accessory blade-like ilmenite, very sparse zoned olivine (~3 vol.%), Cr-Ti oxides, baddeleyite, probable zirconolite, troilite, merrillite, silica polymorph, fayalite and hedenbergite.

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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 - SlideShare

Dec 01, 2012· The texture is termed diabasic and is typical of diabases. This diabasic texture is alsotermed interstitial.[4] The feldspar is high in anorthite (as opposed to albite), the calciumendmember of the plagioclase anorthite-albite solid solution series, most commonly labradorite.Diabase/dolerite 3.

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Arc and backarc geochemical signatures of the proto ...

Outcrop photos of the lithologic units of the Samar Ophiolite. (A) Harzburgites exposed in Manicani Island. (B) Isotropic gabbros in Balangiga. (C) Lower massive flow with diabasic texture and columnar joints in Balangiga. (D) and (E) Massive lava flow and pillow basaltic andesites in Marabut.

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Diabase | Geology Wiki | FANDOM powered by Wikia

The texture is termed diabasic and is typical of diabases. This diabasic texture is also termed interstitial. The feldspar is high in anorthite (as opposed to albite), the calcium endmember of the plagioclase anorthite-albite solid solution series, most commonly …

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Review of Shallow, Ore-related Granites: Textures ...

Further, crystallization textures evolve with increasing undercooling (e.g. a given mafic melt may crystallize yielding a gabbroic texture at low undercooling, a diabasic texture at intermediate undercooling and a basaltic texture at high undercooling).

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Active Basalt Alteration at Supercritical Conditions in ...

The deepest cored section (4634-4659 m) generally retains a diabasic texture, but all igneous minerals are replaced or have changed composition. Plagioclase retains its igneous texture but now has composition ranging from An 30 to An 99. Igneous augite is replaced by intergrown hornblende, clinopyroxene, and orthopyroxene.

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NWA 12262 Martian Meteorite - YouTube

Jul 11, 2019· The piece shows beautifully in multiple display orientations as the medium-grained example with a diabasic texture also features small and …

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ALEX STREKEISEN-Ophitic Texture-

Ophitic Texture Ophitic texture, a variant the Poikilitic texture, is one where random plagioclase laths are enclosed by pyroxene or olivine. If plagioclase is larger and encloses the ferromagnesian minerals, then the texture is subophitic and the laths typically impinge on one another to form sharp angles.

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NWA5990 - 59 grams Depleted Olivine-phyric Shergottite

NWA5990 - 59 grams Depleted Olivine-phyric Shergottite Introduction NWA5990 is a small round stone found on Hamada du Draa, Morocco in 2009. It is a fine-grained diabase that is ~ 400 m.y. old with an exposure to cosmic rays of about 2.1 m.y. It may be unique, but has been compared with QUE94201. Petrography Irving et al. (2012) reported the ...

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【diabasic_texture】_diabasic_texture_ …

(D3) ... diabase-laterite diabasic texture diabatic process .... 69-

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Mineralogy, geochemistry, and petrogenesis of green ...

The ore body is distributed in layers, with two main types of rock surrounding the nephrite strata: diabase intrusive rocks with diabasic textures; and gray-black, thin layers of limestone and grayish-white, thick layers of dolomite intercalated with siliceous rock or sandstone. The limestone stratum is extremely developed, and white calcite ...

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Petrology Flashcards | Quizlet

a texture in which large crystals of augite enclose lath-shaped crystals of plagioclase. As the amount of augite decreases and the relative amount of plagioclase increases the former may fill only the interspaces between the latter. Commonly used synonymously with diabasic texture.

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Textures and Structures of Igneous Rocks Flashcards | Quizlet

Diabasic. Texture characterized by lath-shaped plagioclase (the major mineral) with augite filling the spaces between the plagioclase. Synonymous with intergranular except that it is coarser grained. Trachytic (Megascopic)

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Diabase - UC Berkeley College of Natural Resources

It commonly occurs as tabular bodies (dikes and sills) intruded into surrounding rocks. Diabasic texture is best seen on a weathered surface where the feldspars stand out against the more altered mafic minerals (minerals rich in magnesium and iron). The Palisades …

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Diablastic | Article about diablastic by The Free Dictionary

Looking for diablastic? Find out information about diablastic. Pertaining to a texture in metamorphic rock that consists of intergrown and interpenetrating rod-shaped components Explanation of diablastic

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Diabase - Wikipedia

The texture is termed diabasic and is typical of diabases. This diabasic texture is also termed interstitial. The feldspar is high in anorthite (as opposed to albite), the calcium endmember of the plagioclase anorthite-albite solid solution series, most commonly labradorite. Locations

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Igneous rock textures - SlideShare

Jul 29, 2017· Igneous rock textures 1. Igneous Rock Textures By: Ahmed Essam 2. What are Igneous Rocks? Igneous rocks is the primary type of rocks that formed by direct solidification or crystalization due to the cooling down of molten magma or lava at high temperatures ranges from 650 to 1300 o c. Plutonic or Intrusive Igneous Rocks: that types of igneous rocks that formed beneath the …

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Martian Meteorite - Shergottite NWA 12965, Igneous rock ...

Petrography: (J. Gattacceca, CEREGE) Igneous rock with sub-ophitic texture. Typical grain size 800 µm. Main minerals are strongly zoned pyroxene and maskelynite. Pyroxene has lobate contacts with plagioclase. Opaque minerals are iron oxides and pyrrhotite to 200 µm.

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diabasic texture - Translation from English into Arabic | PONS

Look up the English to Arabic translation of diabasic texture in the PONS online dictionary. Includes free vocabulary trainer, verb tables and pronunciation function.

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Definition of diablastic - Mindat.org

Definition of diablastic. Pertaining to a texture in metamorphic rock that consists of intricately intergrown and interpenetrating constituents, usually with rodlike shapes. ... Prev: diabasic Next: diachronism Glossary Search . Mineral and/or Locality . Mindat.org is an …

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PALAEOMAGNETISM OF DIABASE DYKES OF THE CANADIAN …

Some areas of the Canadian Shield are profusely intruded by swarms of subparallel basaltic dykes. These typically have a diabasic texture and formerly were considered to be strictly the intrusive equivalents of tholeiitic flood basalt.About 650 oriented samples were collected from about 25 dyke swarms and preliminary palaeomagnetic data from six of them are presented here.

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Diabase - Wikipedia

Ophitic texture is the association of lath-shaped euhedral crystals of plagioclase, grouped radially or in an irregular mesh, with surrounding or interstitial large anhedral crystals of pyroxene; it is characteristic of the common rock type known as diabase. Read More

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Diabase | rock | Britannica

In diabase, poorly formed pyroxene crystals wrap around or mold against long, rectangular plagioclase crystals to give it the characteristic texture known as diabasic or ophitic. The larger pyroxene grains may completely enclose plagioclase; but as the quantity of the …

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Swayyah 002 Martian Basalt Meteorites for Sale

Petrography: (A. Irving, UWS and P. Carpenter, WUSL) Diabasic texture (mean grainsize 0.7 mm). Composed mainly of zoned clinopyroxene and maskelynite with accessory Cr-Ti-bearing magnetite, ilmenite, chlorapatite, pyrrhotite and rare baddeleyite.

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Dolerite - The Full Wiki

Ophitic texture (randomly oriented plagioclase laths enclosed by pyroxene grains) is a characteristic feature of diabase. Minerals of lesser importance are magnetite, olivine, ilmenite, hornblende, biotite, chlorite, etc. The term “diabase” has a long and complicated history. It was first defined by a French geologist Alexandre Brongniart ...

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Classification of Igneous Rocks - Kansas Geological Survey

phanerocrystalline, normally silicic, dike rock (or small irregular mass) having a conspicuously coarser texture than parent. Aplite: phanerocrystalline rock having sugary (fine-grained allotriomorphic-granular) texture. Lamprophyre: dark dike rock with exclusive FeMg phenocrysts and/or euhedral FeMg minerals in ground mass. Porphyritic

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Tekstur Batuan | Science Never Dies...

Diabasic, tersusun dari piroksen anhedral (atau amfibol) yang terletak di antara lembaran plagioklas yang tidak terarah. Ophitic, tersusun dari lembaran plagioklas yang dikelilingi oleh lembaran piroksen. Pegmatitic, tersusun dari butiran yang menunjukkan rentang ukuran lebar, namun umumnya terlihat lebih besar dibandingkan pada batu induk.

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felsophyric texture- Free definitions by Babylon

felsophyric texture - Free definition results from over 1700 online dictionaries

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Igneous Rocks Descriptions Name - Wasatch-Uinta Field …

This texture is part of a spectrum from ophitic to subophitic to diabasic. Diabasic texture is commonly found in basaltic dikes and thus over the years, the term diabase (and dolerite in the UK) have become synonymous with basaltic dike. It is most appropriate to avoid that usage and insert diabase as a texture in the unit (and rock) description.

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diabasic - Wiktionary

Pertaining to, or containing, diabase ... Definition from Wiktionary, the free dictionary

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Diabasic Texture