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...
- The Chalk Formation of Southern England is a system of chalk downland in the south of England. The formation is perhaps best known for Salisbury Plain...
- Chalk is a soft, white, porous, sedimentary carbonate rock, a form of limestone composed of the mineral calcite. Calcite is an ionic salt called calcium...
- The White Chalk Formation is a Mesozoic geologic formation in southern England. Pterosaur fossils have been recovered from the formation. Earth sciences...
- The Rügen White Chalk Formation is a geologic formation in Germany. It preserves fossils dating back to the Cretaceous period. Earth sciences portal Germany...
- word for "hills". Downland is formed when chalk formations are raised above the surrounding rocks. The chalk slowly erodes to form characteristic rolling...
- The Chalk Butte Formation is a geologic formation in Oregon. It preserves fossils dating back to the Neogene period. Earth sciences portal Oregon portal...
- The Somme in Northern France is a chalk stream on a larger scale. Chalk streams of the Southern England Chalk Formation in Berkshire, Hampshire, Wiltshire...
- The Smoky Hill Chalk Member of the Niobrara Chalk formation is a Cretaceous conservation Lagerstätte, or fossil rich geological formation, known primarily...
- The Chalk Hills Formation is a geologic formation in Idaho. It preserves fossils dating back to the Neogene period. Earth sciences portal Paleontology...
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