PPT-Earth History GEOL 2110

Lecture 7 Fundamentals of Stratigraphy I Geologic Time Scale Stratigraphic Units Sedimentary Facies Major Concepts In the early 1800s the geologic rock record and time scale was deciphered from careful mapping and observations of fossil assemblages throughout Europe. Lab . 5. . - . Rocks, Weathering, and Minerals. Oct. 2 . - . 5, . 2012. Department of Earth Sciences. Department of Earth Sciences. REVIEW . | . 2. QUIZ . 3 . REVIEW. Solid Bedrock. Unconsolidated sediments. Supplementary material to . Aerden, 1991 (J. Struct. Geol.). Aerden 1991 – J. Struct. Geol.. 100m. WOODEN BLOCKS MODEL. Fold interpretation of Brathwaite, 1970. 45. ORE LENS . E. ORE LENS G. ORE LENS . The Earth is divided into three layers based on the compounds that makeup each layer. They are:. 1. Crust. 2. Mantle. 3. Core. The Crust. The Crust is the :. 1. outer most layer of the Earth.. 2. It is the thinnest layer.. 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. Presented by Kesler Science. What are the main characteristics of the Earth’s layers?. How can the Earth’s layers be illustrated?. Essential Questions:. Earth's Layers. Earth’s Crust. The outer layer of the Earth. Lecture . 9. Absolute Dating of the Earth. Major Concepts. The discovery of radioactivity in the early 1900’s and the recognition that . radioactive deca. y . (a statistical event) . occurs at a constant average rate for particular unstable isotopes has provided a means of determining the absolute ages of earth materials. Geological Time Scale. AIM: . How have stratigraphy and radiometric dating been used to construct the geological time scale?. The History of Earth. Earth’s history has been studied through 2 methods:. Lecture 3. Development of. Geological Concepts, Part I. Major Concepts. In the 17. th. and 18. th. centuries (Age of Reason), application of the scientific method of observation and interpretation began with the purpose of understanding earth processes in the context of the biblical account, but wound up challenging and discrediting that explanation. . Lecture 9. Absolute Dating of the Earth. Major Concepts. The discovery of radioactivity in the early 1900’s and the recognition that . radioactive decay . (a statistical event) occurs at a constant average rate for particular unstable isotopes has provided a means of determining the absolute ages of earth materials. 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 . Conditions on early Earth made the Origin of Life possible.. Current theory about how life on Earth began.. Earth formed about 4.6 billion years ago.. Earth was too hot and still being bombarded by meteors, any water evaporated.. COMMON plumeswere initially thought to consist of primitive mantle (e.g., Schilling, 1973). As we found, mixing be-tween primitive and depleted mantle can explain the Sr and Nd isotopic compositions 2014. Veronica Sosa-Gonzalez. Russia: Setting the context. Outline. Geography and population. Health and education. Political history. Climate and Environment. Lake Baikal paper mill. http://thestateofthecentury.wordpress.com/2013/02/22/the-geopolitical-realities-of-eurasia/. Semester ‘year1. Fall Semester ‘year2. Spring Semester ‘year2. Fall Semester ‘year3. Spring Semester ‘year3. Fall Semester ‘year4. Spring semester ‘year4. GEOL. 1101 (1). Sci as Profession.