Jurassic Period definition

Jurassic Period means the middle period of the Mesozoic era, spanning the time between approximately 213 million and 145 million years before the Effective Date of this Compact, as identified on the geologic table attached hereto as Appendix 4.
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Jurassic Period means the geological period approximately 135 million to 190 million years ago.
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Jurassic Period means the middle period of the Mesozoic era, spanning the time between
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Examples of Jurassic Period in a sentence

  • The Subcommission is the primary body for facilitation of international communication and scientific cooperation in Jurassic stratigraphy, defined in the broad sense of multidisciplinary activities directed towards better understanding of the evolution of the Earth during the Jurassic Period.

  • For example: the end of the Jurassic Period occurred approximately 145.5 million years ago (Gradstein and others, 2004).

  • Indeed, when grown at silica concentrations similar to those inferred for a pre-diatom world, some modern sponges produce spicule morphologies not seen in the geologic record since the Jurassic Period (Maldonado et al.

  • This work provides conclusive evidence that these strata were deposited during the Jurassic Period and can be subdivided into recognizable and mappable packages.

  • Fossil evidence suggests that they originated during, or before, the early Jurassic Period.

  • These tectonic areas are characterized by mid- Jurassic Period slates, and upper Jurassic and lower Cretaceous Period carbonate flysch and mid Jurassic volcanogenic sedimentary rocks.

  • The chert here originated as silica-rich shells of microscopic ocean creatures called radiolarians sunk to the floor of the Panthalassic Ocean, an ancestor to the Pacific, more than 140 million years ago in the Jurassic Period.

  • For example: the end of the Jurassic Period occurred approximately 145.5 million years ago (Xxxxxxxxx and others, 2004).

  • Sedimentary Bedrock formed approximately 166 to 168 million years ago in the Jurassic Period.

  • Dolerite (Jd) Dolerite is a very hard igneous rock that intruded the sedimentary layers during the Jurassic Period and occurs either as sills or as dykes.

Related to Jurassic Period

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  • Effective Period has the meaning assigned thereto in Section 2(a).

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