Author Question: Hydrolysis is particularly effective in weathering ____. A)limestone B)sandstone C)bauxite D)calcite ... (Read 44 times)

bucstennis@aim.com · **on:** Jul 13, 2018

Hydrolysis is particularly effective in weathering ____.
A)limestone
B)sandstone
C)bauxite
D)calcite
E)feldspar

Question 2

Explain how extensive black shales such as those seen in the Middle Devonian across the United States might form.

ultraflyy23 · **Reply #1 on:** Jul 13, 2018

Answer to Question 1

E

Answer to Question 2

The essential features required to produce extensive black shales include undisturbed anaerobic bottom water, a reduced supply of coarser detrital sediment, and high organic productivity in the overlying oxygenated waters. High productivity in the surface waters leads to a shower of organic material, which decomposes on the undisturbed seafloor and depletes the dissolved oxygen at the sedimentwater interface.