英语词汇“plagioclase”造句子简单的方法、技巧、例句及翻译-英语例句辞典

This reaction shows calcium plagioclase feldspar, but similar reactions could also be written for sodium or potassium feldspars. Physical Geology 2015-01-01T00:00:00Z

It usually contains roughly-equal amounts of light and dark minerals, including light grains of plagioclase feldspar and dark minerals like amphibole. An Introduction to Geology 2017-01-01T00:00:00Z

Maaz, which is on top and thus probably younger, has a composition similar to most basaltic lava flows — full of minerals known as pyroxene and plagioclase but with little or no olivine. NASA sees ‘otherworldly’ wreckage on Mars with ingenuity helicopter 2022-04-28T04:00:00Z

Séítah rocks contained evenly distributed crystals of the mineral olivine, which coalesce as magma slowly cools, whereas Máaz rocks had small grains of pyroxene and plagioclase, interlocked in a way that indicated igneous formation. Mars rover wraps survey of Jezero crater’s surprising volcanic floor 2022-03-09T05:00:00Z

The texture of the rocks containing this mineral suggested that it formed from a large body of molten rock that cooled, and the light plagioclase crystals floated to the top. Apollo's Bounty: The Science of the Moon Rocks 2019-07-02T04:00:00Z

What are the names and compositions of the two end-members of the plagioclase series? Physical Geology 2015-01-01T00:00:00Z

Granite commonly has large amounts of salmon pink potassium feldspar and white plagioclase crystals that have visible cleavage planes. An Introduction to Geology 2017-01-01T00:00:00Z

The researchers looked at samples of plagioclase and clinopyroxene from eastern Quebec, Canada and found that they contain magnetic needles approximately 50 to 100 nanometers in size, surprising the researchers. Earth's magnetic field almost disappeared 565 million years ago 2019-01-30T05:00:00Z

Backlit under a microscope, minerals in the slices—including plagioclase, olivine, and pyroxene—burst into focus: polygonal islands swimming in a dark sea of rock. Smudged volcanic crystals offer clues to past eruptions 2016-11-17T05:00:00Z

These fluids contain all the components that have not been consumed in the high-temperature crystals like pyroxene, olivine and plagioclase; and among these components, of course, there is water. Pacific lavas back dry early Mars 2012-09-10T08:50:04Z

At about the point where pyroxene begins to crystallize, plagioclase feldspar also begins to crystallize. Physical Geology 2015-01-01T00:00:00Z

Diorite is identifiable by it’s Dalmatian-like appearance of black hornblende and biotite and white plagioclase feldspar. An Introduction to Geology 2017-01-01T00:00:00Z

Of the felspars the plagioclase separates first and forms well-shaped crystals of which the central parts may be more basic than the outer zones. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 3 "Gordon, Lord George" to "Grasses" 2011-11-13T03:00:13.177Z

She focused on plagioclase crystals that formed in shallow magma chambers in the crust. Smudged volcanic crystals offer clues to past eruptions 2016-11-17T05:00:00Z

They consist essentially of plagioclase felspar, with hornblende or augite, and may contain also biotite, quartz and a limited amount of orthoclase. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 2 "Anjar" to "Apollo"

As it cools further, much of the remaining silica goes into calcium-rich plagioclase, and any silica left may be used to convert some of the olivine to pyroxene. Physical Geology 2015-01-01T00:00:00Z

Because of twinning in the crystal, striations show up on one of the two cleavage faces of the plagioclase crystal. An Introduction to Geology 2017-01-01T00:00:00Z

Their essential minerals are pyroxene, plagioclase and garnet: chemically they resemble the gabbros. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 3 "Gordon, Lord George" to "Grasses" 2011-11-13T03:00:13.177Z

Many of these plagioclase crystals also had numerous layers with different chemical compositions, which they acquired over their long lifetimes. Smudged volcanic crystals offer clues to past eruptions 2016-11-17T05:00:00Z

Their essential minerals are those of basalt, viz. olivine, augite and plagioclase felspar, while hornblende, ilmenite, apatite and biotite are their commonest accessory ingredients. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 6 "Dodwell" to "Drama"

As cooling continues, the various reactions on the discontinuous branch will proceed because silica is abundant, the plagioclase will become increasingly sodium-rich, and eventually potassium feldspar and quartz will form. Physical Geology 2015-01-01T00:00:00Z

See the cleavage surfaces on galena above or plagioclase below. An Introduction to Geology 2017-01-01T00:00:00Z

In many diorites the plagioclase felspar has crystallized before the hornblende, which consequently has less perfect outlines and forms irregular plates which enclose sharply formed individuals of felspar. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 5 "Dinard" to "Dodsworth"

In the centre a small crystal of plagioclase. Etna A History of the Mountain and of its Eruptions

Andesite.—This is a dark-coloured, compact or vesicular, semi-vitreous group of volcanic rocks, composed essentially of a glassy plagioclase felspar, and a ferro-magnesian constituent enclosed in a glassy base. Volcanoes: Past and Present

Why is it common for plagioclase crystals to be zoned from relatively calcium-rich in the middle to more sodium-rich on the outside? Physical Geology 2015-01-01T00:00:00Z

In section 1, olivine crystallizes; section 2: olivine and pyroxene crystallize; section 3: pyroxene and plagioclase crystallize; and section 4: plagioclase crystallizes. An Introduction to Geology 2017-01-01T00:00:00Z

More rarely biotite and augite exhibit the same relations to the plagioclase. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 5 "Dinard" to "Dodsworth"

The plagioclase crystals vary greatly in size, some being mere microliths while others are over the eighth of an inch in length. Etna A History of the Mountain and of its Eruptions

Group of leucite crystals of irregular form from the lava of 1855, congregated around a nucleus of crystals of plagioclase and magnetite. Volcanoes: Past and Present

As the temperature drops, and providing that there is sodium left in the magma, the plagioclase that forms is a more sodium-rich variety. Physical Geology 2015-01-01T00:00:00Z

The actual cleavage angle in plagioclase is slightly different than 90o and the alternating mirror images in these twinned zones produce a series of parallel lines on one of plagioclase’s two cleavage faces. An Introduction to Geology 2017-01-01T00:00:00Z

In the later stages of alteration the amphibole becomes compact and well crystallized; the rocks consist of green hornblende and plagioclase felspar, and are then generally known as epidiorites or amphibolites. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 3 "Destructors" to "Diameter"

On the right hand side part of a plagioclase crystal with inclosures similar to that in the preceding figure. Etna A History of the Mountain and of its Eruptions

The plagioclase felspar, if fresh, is transparent and appears simple in ordinary light, but when polarized breaks up into a series of bars of different colours owing to its complex twinned structure. Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 3 "Banks" to "Bassoon"

In cases where cooling happens relatively quickly, individual plagioclase crystals can be zoned from calcium-rich in the centre to more sodium-rich around the outside. Physical Geology 2015-01-01T00:00:00Z

The essential constituents are quartz, orthoclase and plagioclase, and by the addition to these of biotite, garnet, epidote, blue quartz, and hornblende, five types are formed. History and Comprehensive Description of Loudoun County, Virginia

These rocks consist of augite and plagioclase, with little or no olivine, on a brown, vitreous, interstitial matrix. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 3 "Destructors" to "Diameter"

A fine grained compact gray rock, of aggregate structure, consisting chiefly of quartz, plagioclase and biotite, and the alteration products epidote and sericite. The Long Labrador Trail

Minerals present are hornblende, biotite, plagioclase, pyroxene, quartz and the alteration products from the feldspar. The Long Labrador Trail

A coarse dark green rock whose principal constituents are pyroxene plagioclase and magnetite. The Long Labrador Trail

Sections of the finer schist in polarized light show many small areas of quartz and plagioclase and numerous crystals of epidote, magnetite, and chlorite, the whole having a marked parallel arrangement. History and Comprehensive Description of Loudoun County, Virginia

The minerals of diabase are the same as those of dolerite, viz. olivine, augite, and plagioclase felspar, with subordinate quantities of hornblende, biotite, iron oxides and apatite. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 3 "Destructors" to "Diameter"

A soft extremely fine grained gray rock, with a well developed schistose structure, carrying much magnetite, plagioclase, orthoclase and their alteration products. The Long Labrador Trail

A dark, compact rock, having a mottled appearance due to grains of plagioclase, and a green color in section. The Long Labrador Trail

The principal minerals are, plagioclase, biotite and microcline, with smaller quantities of quartz, iron oxide, pyroxene and garnet. The Long Labrador Trail

单词	plagioclase
例句	plagioclase This reaction shows calcium plagioclase feldspar, but similar reactions could also be written for sodium or potassium feldspars. Physical Geology 2015-01-01T00:00:00Z It usually contains roughly-equal amounts of light and dark minerals, including light grains of plagioclase feldspar and dark minerals like amphibole. An Introduction to Geology 2017-01-01T00:00:00Z Maaz, which is on top and thus probably younger, has a composition similar to most basaltic lava flows — full of minerals known as pyroxene and plagioclase but with little or no olivine. NASA sees ‘otherworldly’ wreckage on Mars with ingenuity helicopter 2022-04-28T04:00:00Z Séítah rocks contained evenly distributed crystals of the mineral olivine, which coalesce as magma slowly cools, whereas Máaz rocks had small grains of pyroxene and plagioclase, interlocked in a way that indicated igneous formation. Mars rover wraps survey of Jezero crater’s surprising volcanic floor 2022-03-09T05:00:00Z The texture of the rocks containing this mineral suggested that it formed from a large body of molten rock that cooled, and the light plagioclase crystals floated to the top. Apollo's Bounty: The Science of the Moon Rocks 2019-07-02T04:00:00Z What are the names and compositions of the two end-members of the plagioclase series? Physical Geology 2015-01-01T00:00:00Z Granite commonly has large amounts of salmon pink potassium feldspar and white plagioclase crystals that have visible cleavage planes. An Introduction to Geology 2017-01-01T00:00:00Z The researchers looked at samples of plagioclase and clinopyroxene from eastern Quebec, Canada and found that they contain magnetic needles approximately 50 to 100 nanometers in size, surprising the researchers. Earth's magnetic field almost disappeared 565 million years ago 2019-01-30T05:00:00Z Backlit under a microscope, minerals in the slices—including plagioclase, olivine, and pyroxene—burst into focus: polygonal islands swimming in a dark sea of rock. Smudged volcanic crystals offer clues to past eruptions 2016-11-17T05:00:00Z These fluids contain all the components that have not been consumed in the high-temperature crystals like pyroxene, olivine and plagioclase; and among these components, of course, there is water. Pacific lavas back dry early Mars 2012-09-10T08:50:04Z At about the point where pyroxene begins to crystallize, plagioclase feldspar also begins to crystallize. Physical Geology 2015-01-01T00:00:00Z Diorite is identifiable by it’s Dalmatian-like appearance of black hornblende and biotite and white plagioclase feldspar. An Introduction to Geology 2017-01-01T00:00:00Z Of the felspars the plagioclase separates first and forms well-shaped crystals of which the central parts may be more basic than the outer zones. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 3 "Gordon, Lord George" to "Grasses" 2011-11-13T03:00:13.177Z She focused on plagioclase crystals that formed in shallow magma chambers in the crust. Smudged volcanic crystals offer clues to past eruptions 2016-11-17T05:00:00Z They consist essentially of plagioclase felspar, with hornblende or augite, and may contain also biotite, quartz and a limited amount of orthoclase. Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 2 "Anjar" to "Apollo" As it cools further, much of the remaining silica goes into calcium-rich plagioclase, and any silica left may be used to convert some of the olivine to pyroxene. Physical Geology 2015-01-01T00:00:00Z Because of twinning in the crystal, striations show up on one of the two cleavage faces of the plagioclase crystal. An Introduction to Geology 2017-01-01T00:00:00Z Their essential minerals are pyroxene, plagioclase and garnet: chemically they resemble the gabbros. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 3 "Gordon, Lord George" to "Grasses" 2011-11-13T03:00:13.177Z Many of these plagioclase crystals also had numerous layers with different chemical compositions, which they acquired over their long lifetimes. Smudged volcanic crystals offer clues to past eruptions 2016-11-17T05:00:00Z Their essential minerals are those of basalt, viz. olivine, augite and plagioclase felspar, while hornblende, ilmenite, apatite and biotite are their commonest accessory ingredients. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 6 "Dodwell" to "Drama" As cooling continues, the various reactions on the discontinuous branch will proceed because silica is abundant, the plagioclase will become increasingly sodium-rich, and eventually potassium feldspar and quartz will form. Physical Geology 2015-01-01T00:00:00Z See the cleavage surfaces on galena above or plagioclase below. An Introduction to Geology 2017-01-01T00:00:00Z In many diorites the plagioclase felspar has crystallized before the hornblende, which consequently has less perfect outlines and forms irregular plates which enclose sharply formed individuals of felspar. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 5 "Dinard" to "Dodsworth" In the centre a small crystal of plagioclase. Etna A History of the Mountain and of its Eruptions Andesite.—This is a dark-coloured, compact or vesicular, semi-vitreous group of volcanic rocks, composed essentially of a glassy plagioclase felspar, and a ferro-magnesian constituent enclosed in a glassy base. Volcanoes: Past and Present Why is it common for plagioclase crystals to be zoned from relatively calcium-rich in the middle to more sodium-rich on the outside? Physical Geology 2015-01-01T00:00:00Z In section 1, olivine crystallizes; section 2: olivine and pyroxene crystallize; section 3: pyroxene and plagioclase crystallize; and section 4: plagioclase crystallizes. An Introduction to Geology 2017-01-01T00:00:00Z More rarely biotite and augite exhibit the same relations to the plagioclase. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 5 "Dinard" to "Dodsworth" The plagioclase crystals vary greatly in size, some being mere microliths while others are over the eighth of an inch in length. Etna A History of the Mountain and of its Eruptions Group of leucite crystals of irregular form from the lava of 1855, congregated around a nucleus of crystals of plagioclase and magnetite. Volcanoes: Past and Present As the temperature drops, and providing that there is sodium left in the magma, the plagioclase that forms is a more sodium-rich variety. Physical Geology 2015-01-01T00:00:00Z The actual cleavage angle in plagioclase is slightly different than 90o and the alternating mirror images in these twinned zones produce a series of parallel lines on one of plagioclase’s two cleavage faces. An Introduction to Geology 2017-01-01T00:00:00Z In the later stages of alteration the amphibole becomes compact and well crystallized; the rocks consist of green hornblende and plagioclase felspar, and are then generally known as epidiorites or amphibolites. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 3 "Destructors" to "Diameter" On the right hand side part of a plagioclase crystal with inclosures similar to that in the preceding figure. Etna A History of the Mountain and of its Eruptions The plagioclase felspar, if fresh, is transparent and appears simple in ordinary light, but when polarized breaks up into a series of bars of different colours owing to its complex twinned structure. Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 3 "Banks" to "Bassoon" In cases where cooling happens relatively quickly, individual plagioclase crystals can be zoned from calcium-rich in the centre to more sodium-rich around the outside. Physical Geology 2015-01-01T00:00:00Z The essential constituents are quartz, orthoclase and plagioclase, and by the addition to these of biotite, garnet, epidote, blue quartz, and hornblende, five types are formed. History and Comprehensive Description of Loudoun County, Virginia These rocks consist of augite and plagioclase, with little or no olivine, on a brown, vitreous, interstitial matrix. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 3 "Destructors" to "Diameter" A fine grained compact gray rock, of aggregate structure, consisting chiefly of quartz, plagioclase and biotite, and the alteration products epidote and sericite. The Long Labrador Trail Minerals present are hornblende, biotite, plagioclase, pyroxene, quartz and the alteration products from the feldspar. The Long Labrador Trail A coarse dark green rock whose principal constituents are pyroxene plagioclase and magnetite. The Long Labrador Trail Sections of the finer schist in polarized light show many small areas of quartz and plagioclase and numerous crystals of epidote, magnetite, and chlorite, the whole having a marked parallel arrangement. History and Comprehensive Description of Loudoun County, Virginia The minerals of diabase are the same as those of dolerite, viz. olivine, augite, and plagioclase felspar, with subordinate quantities of hornblende, biotite, iron oxides and apatite. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 3 "Destructors" to "Diameter" A soft extremely fine grained gray rock, with a well developed schistose structure, carrying much magnetite, plagioclase, orthoclase and their alteration products. The Long Labrador Trail A dark, compact rock, having a mottled appearance due to grains of plagioclase, and a green color in section. The Long Labrador Trail The principal minerals are, plagioclase, biotite and microcline, with smaller quantities of quartz, iron oxide, pyroxene and garnet. The Long Labrador Trail
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