Definition of Chalk period. Meaning of Chalk period. Synonyms of Chalk period

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Definition of Chalk period

Chalk period
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.

Meaning of Chalk period from wikipedia

- Chalk is a soft, white, porous, sedimentary carbonate rock. It is a form of limestone composed of the mineral calcite and originally formed deep under...
- Cretaceous period. Today this formation within the Chalk Group is called the West Melbury Marly Chalk Formation. The Channel Tunnel was bored through Chalk Marl...
- limestone known as chalk. The chalk of northern France and the white cliffs of south-eastern England date from the Cretaceous Period. During the Late Cretaceous...
- The fossil rich Secondary Pre-Adamitic period was divided up into the Coal period, the Lias and the Chalk period, later expanded into the now-familiar...
- Alexander John Gervase Chalk KC (born 8 August 1976) is a British politician and barrister. He served as Lord Chancellor and Secretary of State for Justice...
- 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...
- Erasure: Chalk can be easily erased, while whiteboard markings left for an extended period may require solvents for removal. Stain Resistance: Chalk can be...
- geological period of the entire Phanerozoic. The name is derived from the Latin creta, 'chalk', which is abundant in the latter half of the period. It is...
- The Ector Chalk is a geologic formation in Texas. It preserves fossils dating back to the Cretaceous period. Earth sciences portal Texas portal Paleontology...
- Chalk streams are rivers that rise from springs in landscapes with chalk bedrock. Since chalk is permeable, water percolates easily through the ground...