GEOS 212 1st Edition Lecture 8 Outline of Last Lecture Rivers Headwaters flood plains and Delta plus a world tour of flood plains and major deltas Other types of sediment transport besides rivers glaciers and wind Types of sediments at different ocean depths and where they came from sand mud skeletons Sediment transport diagram Outline of Current Lecture LECTURE 8 OUTLINE Seawater Chemistry 10 February 2015 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 floor o Minerals in beach sand How does turbidite form 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 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 products o Feldspar elements present K Al Si O and weathering products o Mica elements present Fe Mg Al Si O and weathering products Physical Chemical changes along a river system profile diagrams Contributions of rock weathering to seawater chemistry Importance of rock weathering and volcanic gases to oceans atmosphere and life Current Lecture SEDIMENT TRANSPORT
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