CAS ES 144 Lecture Notes - Lecture 12: Harold Urey, Zirconium, Goldilocks Principle
18 Jan 2018
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Document Summary
Rocks found at jackson hill are sedimentary rocks which have a chemical composition that is beneficial to organism through vitamins and minerals. Jackson hill also boasts the oldest mineral on earth, zirconium. Zirconium can be used for geochronology due to the presence of uranium. Scientists concluded that the zirconium samples were created in an already existing ocean. Carboniferous chondrite is a meteorite that is unique in that it contains some of the youngest material from our solar system. However they are the most primitive terrestrial material. Oxygen coming from the atmosphere and mantle often have different isotopic concentrations allowing for an accurate report on their origins. Oxygen from aquatic environments typically have lower isotopic ratios. The solar system is 4. 5672 billion year old as evidenced from a c-al sample. Bacteria thrive on nitrogen, especially from fertilization runoff. Bacteria gain energy by taking co2 and sulfur to create alcohol and water as a waste product.
