chalk wikipedia - EAS
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See all on WikipediaSECUREen.wikipedia.org/wiki/ChalkChalk is a soft, white, porous, sedimentary carbonate rock. It is a form of limestone composed of the mineral calcite and originally formed deep under the sea by the compression of microscopic plankton that had settled to the sea floor. Chalk is common throughout Western Europe, where
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See moreChalk is a fine-textured, earthy type of limestone distinguished by its light color, softness, and high porosity. It is composed mostly of tiny fragments of the calcite shells or skeletons of plankton, such as
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Chalk is mined from chalk deposits both above ground and underground. Chalk mining boomed during the Industrial Revolution, due to the need for chalk products such as
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See more• Blackboard – Reusable writing surface
• Chalk carving
• Chalk line – Tool for marking straight lines...
See moreChalk was formed in the Cretaceous, between 99 and 65 million years ago. It was deposited on extensive continental shelves at depths between 100 and 600 metres (330 and 1,970 ft),
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See moreChalk is so common in Cretaceous marine beds that the Cretaceous Period was named for these deposits. The name Cretaceous was derived from Latin creta, meaning chalk.
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See moreMost people first encounter chalk in school where it refers to blackboard chalk, which was originally made of mineral chalk, since it readily
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See more• Gordon, Helen (23 February 2021). "Rock of ages: How chalk made England". The Guardian. Adapted from Notes From Deep Time: A Journey Through Our Past and Future Worlds by Helen
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See moreWikipedia text under CC-BY-SA license- SECUREen.wikipedia.org/wiki/Chalk_(military)
In military terminology, a chalk is a group of paratroopers or other soldiers that deploy from a single aircraft. A chalk often corresponds to a platoon -sized unit for air assault operations, or a company -minus-sized organization for airborne operations. For air transport operations, it can consist of up to a company-plus-sized unit.
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- SECUREsimple.wikipedia.org/wiki/Chalk
Chalk is a type of limestone. It was made by calcareous (CaCO 3) skeletons of tiny planktonic algae called coccoliths. They live in the sea in huge numbers. They make chalk (CO 2) as a by-product of their photosynthesis. The chalk cliffs of Dover and elsewhere were made when England was below the equator in a tropical sea.
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- SECUREen.wikipedia.org/wiki/Chalk_(TV_series)
- Chalk Opening title. A crane shot descends outside of Galfast High. Written bySteven Moffat Directed byJuliet May StarringDavid Bamber Nicola Walker Theme music composerHoward Goodall Country of originUnited Kingdom No. of series2 No. of episodes12 Production Executive producerKevin Lygo ProducerAndre Ptaszynski EditorRichard Halladay Running time3...
- Executive producer: Kevin Lygo
- Original network: BBC One
- Original release: 20 February –, 22 October 1997
- SECUREen.wikipedia.org/wiki/Chalk_(film)
Chalk is a 2006 comedy mockumentary about teaching focusing on the lives of three teachers and one assistant principal. It stars Chris Mass as Mr. Stroope and Troy Schremmer as Mr. Lowrey. It is directed by Mike Akel. The movie is based on both Akel's and Mass' real life experiences in the teaching profession.
- SECUREen.wikipedia.org/wiki/Chalk_Group
From Wikipedia, the free encyclopedia The Chalk Group (often just called the Chalk) is the lithostratigraphic unit (a certain number of rock strata) which contains the Upper Cretaceous limestone succession in southern and eastern England. The same or similar rock sequences occur across the wider northwest European chalk ' province '.
- SECUREen.wikipedia.org/wiki/ChalkZone
ChalkZone is an American animated television series created by Bill Burnett and Larry Huber for Nickelodeon. The series follows Rudy Tabootie, an elementary school student who discovers a box of magic chalk that allows him to draw portals into the ChalkZone, an alternate dimension where everything ever drawn on a blackboard and erased turns to life. Rudy is joined in his …
- SECUREgeologyscience.com/rocks/sedimentary-rocks/chalk
Chalk is a non-clastic carbonate sedimentary rock that is form of limestone compesed of the mineral calcite. It is soft, fine-grained and easily pulverized. Color is white-to-grayish variety of limestone rock. It is composed of the shells of such minute marine organisms as foraminifera, coccoliths, and rhabdoliths.
- SECUREen.wikipedia.org/wiki/Chris_Chalk
From Wikipedia, the free encyclopedia Christopher Eugene Chalk (born December 7, 1977) [citation needed] is an American actor . Contents 1 Early life 2 Career 3 Personal life 4 Filmography 5 References 6 External links Early life [ edit]
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