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Named Color Codes / Reference Chart

Desert sand #edc9af; Desire #ea3c53; Diamond #b9f2ff; Dim gray #696969; Dingy Dungeon #c53151; Dirt #9b7653; Dirty brown #b5651e; Dirty white #e8e4c9; Disappearing purple (Metsushi) #3f313a; Dodger blue #1e90ff; Dodie yellow #fef65b; Dogwood rose #d71868; Dollar bill #85bb65; Dolphin gray #828e84; Douban Blue #2496cd; Douban Green #2e963d ...

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Gravel | Encyclopedia

gravel, particles of rock, i.e., stones and pebbles, usually round in form and intermediate in size between sand grains and boulders. Gravel is composed of various kinds of rock, the most common constituent being the mineral quartz.

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Sandstone - Wikipedia

Sandstone is a clastic sedimentary rock composed mainly of sand-sized (0.0625 to 2 mm) mineral particles or rock fragments (clasts) or organic material. They make up about 20 to 25 percent of all sedimentary rocks. Most sandstone is composed of quartz or feldspar (both silicates) because they are the most resistant minerals to weathering processes at the Earth's .

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Basalt - Wikipedia

Basalt is an aphanitic (fine-grained) igneous rock that is relatively low in silica and alkali metals.It has a silica content of 45–53% and less than 10% feldspathoid by volume, with at least 65% of the rock consisting of feldspar in the form of plagioclase. This places basalt in the B field of the TAS classification or fields 9, 9', 10, 10', and 10 * of the QAPF diagram.

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desert | National Geographic Society

Although the word "desert" may bring to mind a sea of shifting sand, dunes cover only about 10 percent of the world's deserts. Some deserts are mountainous. Others are dry expanses of rock, sand, or salt flats. Kinds of Deserts The world's deserts can be divided into five types—subtropical, coastal, rain shadow, interior, and polar.

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Sand - Encyclopedia Britannica

Sand, mineral, rock, or soil particles that range in diameter from 0.02 to 2 mm (0.0008–0.08 inch). Most of the rock-forming minerals that occur on the Earth's surface are found in sand, but only a limited number are common in this form. Although in some localities feldspar, calcareous material,

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Artcyclopedia: Browse Artists Alphabetically by Name

Notes on the alphabetizing of names on this site: Following common practice, Italian "place" names (containing -da-, -di- or -della -, for example) are generally listed under the artist's first name (e.g. Leonardo da Vinci is under "L"). We have attempted to list Asian artists under their family name, although they may be written as last-name-first-name or Westernized as first-name-last-name.

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quarry | National Geographic Society

Sand, gravel or crushed rock excavated from a quarry is called aggregate. Aggregate is used in construction to create stable foundations for things like roads and railroad tracks. Aggregate is also used to make concrete and asphalt. For this reason, asphalt and concrete plants are often built next to quarries. Asphalt is an oily substance that ...

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Sandstone | Article about sandstone by The Free Dictionary

a sedimentary rock composed of sand grains cemented by clay, carbonate, siliceous, or other material. Like sand, sandstones are divided into small-grain (0.1–0.25 mm), medium-grain (0.25–0.5 mm), and large-grain (0.5 mm) varieties according to the predominant particle size.

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Eyerok - Super Mario Wiki, the Mario encyclopedia

Apr 29, 2020 · History [] Super Mario series [] Super Mario 64 []. In Super Mario 64, Eyerok is the boss of Shifting Sand Land and resides in the central pyramid. Its chamber is a platform with a pit on three sides and is contained in a large red block. Eyerok guards the Power Star of the "Stand Tall on the Four Pillars" mission.. During the battle, Eyerok attacks by either slamming its fists or trying to ...

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sand - Kids | Britannica Kids | Homework Help

Sand is made up of small, loose pieces of rock, soil, minerals, and even gemstones. It may also contain the remains of living things. Sand particles, called grains, are smaller than gravel. They are larger than particles of mud or clay.

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Gravel | Encyclopedia

gravel, particles of rock, i.e., stones and pebbles, usually round in form and intermediate in size between sand grains and boulders. Gravel is composed of various kinds of rock, the most common constituent being the mineral quartz.

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Geology of Alabama | Encyclopedia of Alabama

May 23, 2008 · Cheaha State Park Alabama is a very geologically diverse state. Rocks exposed at the surface range in age from Precambrian to Holocene (2.5 billion years to about 1,800 years old). Alabama's vast geologic history includes episodes of continental collision and mountain building that produced numerous landforms, including in the folded and faulted sedimentary rocks of the .

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List of bands - Encyclopedia Britannica

Alternative rock, pop music style, built on distorted guitars and rooted in generational discontent, that dominated and changed rock between 1991 and 1996.It burst into the mainstream when "Smells Like Teen Spirit"—the first major-label single from Nirvana, a .

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The Sphinx - HISTORY

Aug 21, 2018 · The Great Sphinx of Giza is a giant 4,500-year-old limestone statue situated near the Great Pyramid in Giza, Egypt. Measuring 240 feet (73 meters) long and 66

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I Dream That A Huge Sand Like A Rock Bow By My Side ...

Sand is also a symbol of abundance and prosperity in that there are more grains of sand on a stretch of beach than can conceivably be counted. Sand also represents the passage of time, as in sand through the hour glass, or it can be an irritant, as in sand in an oyster, that .

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Geology and Earth Science News, Articles, Photos, Maps and ...

Geology is one of the world's leading portals to geology and earth science news and information for rocks, minerals, gemstones, energy, volcanoes, earthquakes, careers, geologic hazards, and more.

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sand - Students | Britannica Kids | Homework Help

When quartz sand grains are tightly cemented with silica, they form the hard compact rock called quartzite. (See also rock.) Uses of Sand. Sand is a major ingredient of mortar, plaster, concrete, and asphalt paving. Bricks made of clay mixed with sand are harder and will bear a greater weight than bricks composed of clay only.

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Quartz | Encyclopedia

Quartz. Quartz (SiO 2), a common mineral, is the product of the two most prevalent elements in the earth's crust: silicon and oxygen.Quartz can be found as giant crystals or small grains, and is the main component of most types of sand.It is the hardest common mineral, and for this reason is often used in the making of sandpaper, grindstones, polishers, and industrial cleaners.

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Aquifers | National Geographic Society

Jul 30, 2019 · An aquifer is a body of rock and/or sediment that holds groundwater.Groundwater is the word used to describe precipitation that has infiltrated the soil beyond the surface and collected in empty spaces underground.. There are two general types of aquifers: confined and unconfined. Confined aquifers have a layer of impenetrable rock or clay above them, while .

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