Marine Bio-geochemistry and Sedimentation

• Distribution of Marine Sediments 

• Carbonate Equilibrium and the CCD 

• Organic Carbon and Sediments

• Bacterial Respiration and Subsurface Redox Zonation

• Fe/Mn Nodule Formation

Dissolution of Carbonate at Depth

• Chemical processes modify biological (biogenic) sediments through the dissolution of CaCO3 and opal silica in deep water.

• Temperature and pressure play a role in increasing the corrosiveness of deep waters

• The other major control on carbonate dissolution is due to the creation of CO2 by the oxidation of organic matter 

• This creates bicarbonate ions at the expense of carbonate ions thereby driving the dissolution of carbonate tests.         

Note:- This Seminar download only contain PPT