Definition of Chalk formation. Meaning of Chalk formation. Synonyms of Chalk formation
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Definition of Chalk formation
Chalk formationChalk 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
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]
Chalk drawing (Fine Arts), a drawing made with crayons. See
Chalk formation. See Cretaceous formation, under
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
Chalk period. (Geol.) See Cretaceous period, under
Chalk pit, a pit in which chalk is dug.
Drawing chalk. See Crayon, n., 1.
French chalk, steatite or soapstone, a soft magnesian
Red chalk, an indurated clayey ocher containing iron, and
used by painters and artificers; reddle. chalk formationCretaceous 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
Meaning of Chalk formation from wikipedia
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