cretaceous rocks

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

• Cretaceous — Cre*ta ceous (kr[ e]*t[=a] sh[u^]s), a. [L. cretaceus, fr. creta chalk. See {Crayon}.] 1. Having the qualities of chalk; abounding with chalk; chalky; as, cretaceous rocks and formations. See {Chalk}. [1913 Webster] 2. (Geol.) Of, pertaining to,… …   The Collaborative International Dictionary of English

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

• Cretaceous — adjective Etymology: Latin cretaceus resembling chalk, from creta chalk Date: 1832 of, relating to, or being the last period of the Mesozoic era characterized by continued dominance of reptiles, emergent dominance of angiosperms, diversification… …   New Collegiate Dictionary

• Cretaceous — Cre|ta|ceous [krıˈteıʃəs] adj [Date: 1600 1700; : Latin; Origin: cretaceus, from creta chalk ] the Cretaceous period was the time long ago when rocks containing ↑chalk were formed …   Dictionary of contemporary English

• cretaceous — adjective technical 1 similar to chalk 1 (1) or containing chalk 2 the Cretaceous period the time when rocks containing chalk were formed …   Longman dictionary of contemporary English

• Medicine Rocks State Park — IUCN Category V (Protected Landscape/Seascape) Medicine Rocks State Park …   Wikipedia

• Late Cretaceous — (100mya 65mya) refers to the second half of the Cretaceous Period, named after the famous white chalk cliffs of southern England, which date from this time. Rocks deposited during the Late Cretaceous Period are referred to as the Upper Cretaceous …   Wikipedia

• Old Harry Rocks — Old Harry and his (latest) wife The Old Harry …   Wikipedia