Definition of Chalk formation. Meaning of Chalk formation. Synonyms of Chalk formation

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Definition of Chalk formation

Chalk formation
Chalk Chalk, n. [AS. cealc lime, from L. calx limestone. See Calz, and Cawk.] 1. (Min.) A soft, earthy substance, of a white, grayish, or yellowish white color, consisting of calcium carbonate, and having the same composition as common limestone. 2. (Fine Arts) Finely prepared chalk, used as a drawing implement; also, by extension, a compound, as of clay and black lead, or the like, used in the same manner. See Crayon. Black chalk, a mineral of a bluish color, of a slaty texture, and soiling the fingers when handled; a variety of argillaceous slate. By a long chalk, by a long way; by many degrees. [Slang] --Lowell. Chalk drawing (Fine Arts), a drawing made with crayons. See Crayon. Chalk formation. See Cretaceous formation, under Cretaceous. Chalk line, a cord rubbed with chalk, used for making straight lines on boards or other material, as a guide in cutting or in arranging work. Chalk mixture, a preparation of chalk, cinnamon, and sugar in gum water, much used in diarrheal affection, esp. of infants. Chalk period. (Geol.) See Cretaceous period, under Cretaceous. Chalk pit, a pit in which chalk is dug. Drawing chalk. See Crayon, n., 1. French chalk, steatite or soapstone, a soft magnesian mineral. Red chalk, an indurated clayey ocher containing iron, and used by painters and artificers; reddle.
chalk formation
Cretaceous Cre*ta"ceous (kr[-e]*t[=a]"sh[u^]s), a. [L. cretaceus, fr. creta chalk. See Crayon.] Having the qualities of chalk; abounding with chalk; chalky; as, cretaceous rocks and formations. See Chalk. Cretaceous acid, an old name for carbonic acid. Cretaceous formation (Geol.), the series of strata of various kinds, including beds of chalk, green sand, etc., formed in the Cretaceous period; -- called also the chalk formation. See the Diagram under Geology. Cretaceous period (Geol.), the time in the latter part of the Mesozoic age during which the Cretaceous formation was deposited.

Meaning of Chalk formation from wikipedia

- 'Upper Chalk') Tarrant Chalk Member (formerly part of 'Upper Chalk') Newhaven Chalk Formation (formerly part of 'Upper Chalk') Seaford Chalk Formation (formerly...
- Downland, chalkland, chalk downs or just downs are areas of open chalk hills, such as the North Downs. This term is used to describe the characteristic...
- layers of chalk, containing Globorotalia, in the Nicosia Formation of Cyprus, which formed during the Pliocene. Chalk is mined from chalk deposits both...
- The Chalk Marl is a geologic formation in England. Consisting of mixed and layered chalk and marl, it preserves fossils dating back to the Cretaceous period...
- Old Harry Rocks are three chalk formations, including a stack and a stump, located at Handfast Point, on the Isle of Purbeck in Dorset, southern England...
- Burnham Chalk formation Welton Chalk Formation Grey Chalk Subgroup Ferriby Chalk Formation Hunstanton Chalk Formation The thin Hunstanton Chalk and the...
- The Niobrara Formation /ˌnaɪ.əˈbrærə/, also called the Niobrara Chalk, is a geologic formation in North America that was deposited between 87 and 82 million...
- Chalk streams are rivers that rise from springs in landscapes with chalk bedrock. Since chalk is permeable, water percolates easily through the ground...
- The Austin Chalk is an upper Cretaceous geologic formation in the Gulf Coast region of the United States. It is named after type section outcrops near...
- Niobrara Chalk is comparable to that of the Dakota Formation, although the Dakota Formation, which was deposited during the Cenomanian, predates the chalk by...