GEOS 212 1st Edition Lecture 9Outline of Last Lecture Review:- Three main processes for transporting sediment (rivers, glaciers, wind) - Big rivers of the world (Mississippi, Amazon, Nile, Congo, Yangtze, Yellow, Ganges, Indus) - Sediments on coastlines and continental shelf (Sand -> Mud -> Skeletons)- Sediments on deep sea floor: turbidites (submarine landslide), clays (mostly windblown), skeletons of microscopic plants: diatoms (quartz) and coccoliths (calcite) - Profile view of changes in sediment on continent & ocean floor Distribution of Sediment Types on the Seafloor:- Movies of sediment on coastline & deep seafloor o Type and thickness of sediment on deep ocean flooro Minerals in beach sand? How does turbidite form?- Seawater chemistry, chemistry of life, rocks, and volcanoes – all connected!! - Chemical processes of weathering => salinity of seawater - Granite = Rock = made up of 8 main elements (see below) - Elements combined into three minerals: o Quartz: elements present (Si + O), and weathering productso Feldspar: elements present (K + Al + Si + O), and weathering productso Mica: elements present (Fe + Mg + Al + Si + O), and weathering products - Physical & Chemical changes along a river system (profile diagrams)These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.- Contributions of rock weathering to seawater chemistry Importance of rock weathering and volcanic gases to oceans, atmosphere, and life!Outline of Current LectureLECTURE 10 OUTLINE : Light in the Ocean- The four function of sunlight in the ocean- Why the ocean is blue? (Light reflects of mostly blue)- Why is the equator warmer than the poles? (Direct vs. Indirect sunlight)- Changes in light, pressure, temperature, oxygen, and co2 as one descendsCurrent Lecture: Light in the
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