Jurassic vs Oolitic - What's the difference?

jurassic | oolitic |

As adjectives the difference between jurassic and oolitic

is that jurassic is (label) of or pertaining to the second period of the mesozoic era, a time still dominated by dinosaurs while oolitic is .

As a proper noun jurassic

is the period from 2013±02 to 145 million years ago, after the triassic and before the cretaceous; the geologic systems of this period.




(wikipedia Jurassic) (-)
  • (label) Of or pertaining to the second period of the Mesozoic era, a time still dominated by dinosaurs.
  • * 1990 , Michael Crichton, Jurassic Park , Alfred A. Knopf, p 94:
  • His father squinted at the skeleton. “What is it, Jurassic'?” “Jeez. No. Cretaceous.” “Cretaceous? What's the difference between Cretaceous and '''Jurassic'''?” “Only about a hundred million years,” Tim said. “Cretaceous is older?” “No, Dad, ' Jurassic is older.”
  • Of or pertaining to the people or region near the Jura Mountain Range of Europe.
  • * 1910 , Peter Kropotkin, “Anarchism”, in Encyclopædia Britannica .
  • The Jurassic , the Spanish and the Italian federations and sections of the International Working Men's Association, as also the French, the German and the American anarchist groups, were for the next years the chief centres of anarchist thought and propaganda.

    Proper noun

    (en proper noun)
  • The period from 201.3±0.2 to 145 million years ago, after the Triassic and before the Cretaceous; the geologic systems of this period.
  • * D. M. Kermack, K. A. Kermack, The Evolution of Mammalian Characters :
  • [p 108] Like the Forest Marble Beds in the Middle Jurassic , the Purbeck Beds of the Upper Jurassic are deltaic or estuarine in origin, so as well as mammals they contain small, presumably freshwater, crocodiles and the first indisputable lizards.
    [p 109] This is less surprising if it is recalled that in the Upper Jurassic , Europe and North America were joined to form Laurasia and the Atlantic Ocean still had to be formed [...]


    * (geological period) Phanerozoic - eon; Mesozoic - era


    * (geological period) Lower Jurassic, Middle Jurassic, Upper Jurassic - epochs; series

    Coordinate terms

    * (geological period) Triassic (preceding), Cretaceous (succeeding) - periods; systems

    See also





    (en adjective)
  • (geology) Made up of, or containing oolites
  • * 1844 , Charles Darwin, Volcanic Islands , Project Gutenberg transcription
  • Masses of white, finely oolitic rock are attached to the outside of some of these coated pebbles.
  • Of a prehistoric era; Jurassic.
  • * 1852 , J.C. Fremont, The Exploring Expedition to the Rocky Mountains, Oregon and California , Project Gutenberg transcription
  • These mines occur in the same ridge in which, about 120 miles to the northward, and subsequently in their more immediate neighborhood, we discovered the fossils belonging to the oolitic period


    (en noun)
  • An oolite.
  • A prehistoric era; the Jurassic.