rocks of Tertiary period

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• Tertiary Period — Interval of geologic time, 65–1. 8 million years ago. It constitutes the first of the two periods of the Cenozoic Era, the second being the Quaternary. The Tertiary has five subdivisions: (from oldest to youngest) the Paleocene, Eocene, Oligocene …   Universalium

• tertiary — [tʉr′shē er΄ē, tʉr′shə rē] adj. [L tertiarius < tertius,THIRD] 1. of the third rank, order, formation, stage, etc.; third 2. Chem. a) third in order or type; involving the substitution of three atoms or radicals b) characterized by or… …   English World dictionary

• tertiary — I. noun (plural ries) Date: circa 1550 1. [Medieval Latin tertiarius, from Latin, of a third] a member of a monastic third order especially of lay people 2. capitalized the Tertiary period or system of rocks II. adjective Etymology: Latin …   New Collegiate Dictionary

• period — /pear ee euhd/, n. 1. a rather large interval of time that is meaningful in the life of a person, in history, etc., because of its particular characteristics: a period of illness; a period of great profitability for a company; a period of social… …   Universalium

• tertiary — /ˈtɜʃəri / (say tershuhree) adjective 1. of the third order, rank, formation, etc.; third. 2. Education denoting or relating to tertiary education. 3. Chemistry a. denoting or containing a carbon atom united to three other carbon atoms. b. formed …  

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

• Ordovician Period — Interval of geologic time, 490–443 million years ago, the second oldest period of the Paleozoic Era. It follows the Cambrian and precedes the Silurian. During the Ordovician, many of the landmasses were aligned in the tropics. Life was dominated… …   Universalium

• 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

• geological period — noun a unit of geological time during which a system of rocks formed ganoid fishes swarmed during the earlier geological periods • Syn: ↑period • Hypernyms: ↑geological time, ↑geologic time • Hyponyms: ↑ice age, ↑ …   Useful english dictionary

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

• Paleogene Period — ▪ geology also spelled  Palaeogene Period   older of the two stratigraphic divisions of the Cenozoic Era spanning the interval between 65.5 million and 23 million years ago. Paleogene is Greek meaning “ancient born” and includes the Paleocene… …   Universalium