EPS SCI 3 Study Guide - Quiz Guide: Komatiite, Hydrogen Sulfide, Formamide
17 Nov 2016
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Document Summary
Prokaryotes have no membrane around the genetic material (no nucleus) Multicellular life includes cells that specialize in different fxs (muscle cells, rbc, adipose. The archaean (rise of life-3. 8-2. 5 ga ago: water was present with a reduced atmosphere. Formation of small continents appeared with the signs of first life (stromatolithes). Basalt: common extrusive volcanic rock, high in silicone dioxide, iron oxide and aluminum oxide and has a eruption temperature of about 1100 c to. Komatiite: high in magnesium oxide and has a very high melting point with eruption temperature of >1600 c. Hydrothermal systems from komatiite lava flows would have been very alkaline (high ph) due to high mg content. Sediments were scarce and consisted of eroded volcanic terrain or volcanic ashes (mg rich) Radiogenic heat formation is heat generated by radioactive decay at various times in the past. It has decreased over time because the abundance of radioactive elements have diminished over time.
