PPT-Cenozoic Earth History I

The Cenozoic Era Spans the 655 Ma from the end of the Mesozoic to today There is not agreement in the Earth science community about whether the Cenozoic should be subdivided into Tertiary and Quaternary or into . Canada’s Geologic History. - By carefully analyzing landforms, rocks and fossils. - A fossil of an animal that was around on earth at a particular time in history. Index Fossils. 4, 600, 000, 000 years ago. The . Sun. Is HOT!!!. The sun is an . average . star . The heat and light are the result of . Nuclear Reactions . constantly taking place in the sun.. It is in the . center. of our solar system. . Comparison . An Introduction to Ch 11&12. Regions of the Earth. The Earth is made up predominantly of two major regions:. A predominantly molten, central core. A mostly solid outer mantle and crust. Hydrosphere and Crust . What is Earth Science?. What are the Earth System’s four Spheres?. What are cycles and how do they work?. System. : A kind of model often used to describe the natural world.. Closed System. : ENERGY enters and may leave, but MATTER does not leave. A) is an essential part of the gradualist model of evolution. B) refers to morphological stasis, not molecular stasis. C) suggests strong directional selection. D) is more likely in . dueterostomes. E) none of the above. Chapter 14 Lesson 3. 248 mya to 65 mya. Dinosaurs roam the Earth. Tremendous plate movement occurs breaking Pangaea up. The Mesozoic Era. Beginning of Mesozoic all land was joined as the Supercontinent Pangaea. The Layers of the Earth. The Earth is an oblate spheroid – the . Solid Earth. . . It is composed of a number of . different layers. as determined by deep drilling and . seismic. evidence.. The Four Basic Layers. Organization of . Ch. 21-24. Ch. 21.1 – Describes the geologic time scale. Ch. 22 – Precambrian Earth. . Section 1: Early Earth. . Section 2: Formation of the Crust and Continents. . Section 3: Formation of the Atmosphere and Oceans. The Geologic Column. Eonothem. Erathems. Systems. Eonothem. Erathems. Systems. Eon. Era. Periods. Chronostratigraphic. Geochronologic. Two Sets of Terminology. Precambrian. Phanerozoic. Eonothem. How old is the earth?. How old is our earth?. Aristotle thought the Earth had existed eternally.. Early Romans believed its formation was relatively recent due to no records before the Trojan War.. 1640 – Ussher calculated Earth was created in . Geologic Time and Evolution Earth Has a History Geologic materials record enormous changes. Earth is a complex, evolving system. Physical and biological systems continuously interact. Earth constantly changes and has done so through time. A. V. Zuza – CV Page 1 of 5 , Ph.D. Assistant Professor Nevada Bureau of Mines and Geology Mackay School of Earth Sciences and Engineering University of Nevada, Reno azuza@unr.edu ; ( 775 ) 682 - A V Zuza CVPage 1of 5 PhDAssistant ProfessorNevada Bureau of Mines and GeologyMackay School of Earth Sciencesand EngineeringUniversity of Nevada Renoazuzaunredu 775682-8752EDUCATIONPhDUniversity of Ca A V Zuza CVPage 1of 5 PhDAssistant ProfessorNevada Bureau of Mines and GeologyMackay School of Earth Sciences and EngineeringUniversity of Nevada Renoazuzaunredu775682-8752EDUCATIONPhDUniversity of Ca