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Open Earth Systems: An Earth Science Course For Maryland Teacher Professional Development

Open Earth Systems: An Earth Science Course For Maryland Teacher Professional Development. EARTH HISTORY AND THE FOSSIL RECORD DAY 1 - Weds. July 9 AM Instruction: Solar System Origin, Early Earth & Habitability AM Activity: Dating the Earth – Simulating Radioactive Decay

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Open Earth Systems: An Earth Science Course For Maryland Teacher Professional Development

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  1. Open Earth Systems: An Earth Science Course For Maryland Teacher Professional Development EARTH HISTORY AND THE FOSSIL RECORD DAY 1 - Weds. July 9 AM Instruction: Solar System Origin, Early Earth & Habitability AM Activity: Dating the Earth – Simulating Radioactive Decay PM Instruction: Major Events in Earth History PM Activity: Exploring Geologic Time with TS-Creator DAY 2 - Thurs. July 10 AM Instruction: Climates of the Past AM Activity: Weathering, Erosion and Soils PM Instruction: The Fossil Record of Life PM Activity: Fossil Identification LINDA HINNOV, Instructor

  2. Radioisotope dating • Year 1896 Discovery of Radioactivity: • Arthur Holmes • Discovery of radioactivity led to geological applications and measurement of parent-daughter isotope ratios in specific rock minerals. • * Absolute ages of rocks • * Improved global correlation of rocks • Further refinement of Earth history timeline • Ability to assess rates of major geologic • processes

  3. Radioisotope dating U-Pb dating of zircons Zircons from a volcanic ash bed, human hair for scale. M. Schmitz website: http://earth.boisestate.edu/ home/markschmitz/ Parent IsotopeStable Daughter ProductCurrently Accepted Half-Life Uranium-238 Lead-206 4.5 billion years Uranium-235 Lead-207 704 million years Thorium-232 Lead-208 14.0 billion years Rubidium-87 Strontium-87 48.8 billion years Potassium-40 Argon-40 1.25 billion years Samarium-147 Neodymium-143 106 billion years Carbon-14 Nitrogen-14 5,730 years http://pubs.usgs.gov/gip/geotime/radiometric.html

  4. Activity

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