Cretaceous period
Cretacic Cre*tac"ic [Webster 1913 Suppl. +PJC]

{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, and at the end of which the dinosaurs died out. See {Cretaceous}. [1913 Webster +PJC]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • Cretaceous Period — Interval of geologic time from с 144 to 65 million years ago. During the Cretaceous the climate was warmer than today. In the seas, marine invertebrates flourished, and bony fishes evolved. On land, flowering plants arose, and insects, bees in… …   Universalium

  • Cretaceous period — kreida statusas T sritis ekologija ir aplinkotyra apibrėžtis Minkšta, menkai susicementavusi nuosėdinė karbonatinė uoliena, susidariusi iš planktoninių vienaląsčių organizmų klintinių liekanų ir chemogeninio kalcito (40–50%). Tarp organinių… …   Ekologijos terminų aiškinamasis žodynas

  • Cretaceous period — noun from 135 million to 63 million years ago; end of the age of reptiles; appearance of modern insects and flowering plants • Syn: ↑Cretaceous • Derivationally related forms: ↑Cretaceous (for: ↑Cretaceous) • Instance Hypernyms: ↑ …   Useful english dictionary

  • cretaceous period — n. geologic timescale from 135 million to 63 million years ago; end of the age of reptiles; appearance of modern insects and flowering plants …   English contemporary dictionary

  • Cretaceous — Period 145.5–65.5 million years ago …   Wikipedia

  • cretaceous — [kri tā′shəs, krētā′shəs] adj. [L cretaceus < creta: see CRAYON] 1. Now Rare containing, composed of, or having the nature of, chalk 2. [usually C ] designating or of the third and last geologic period of the Mesozoic Era, characterized by the …   English World dictionary

  • Cretaceous Research —   Abbreviated title (ISO) …   Wikipedia

  • Cretaceous–Tertiary extinction event — Artist s rendering of bolide impact Badlands nea …   Wikipedia

  • Cretaceous acid — Cretacic Cre*tac ic [Webster 1913 Suppl. +PJC] {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;… …   The Collaborative International Dictionary of English

  • Cretaceous formation — Cretacic Cre*tac ic [Webster 1913 Suppl. +PJC] {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;… …   The Collaborative International Dictionary of English

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”