GEOG 3360 Study Guide - Midterm Guide: Alluvium, Kaolinite, Feldspar
Document Summary
Geog 3360 midterm take-up: given the table in part 1, the task is to conduct an analysis of these three soil profiles. The source parent material is alluvium(which is loose unconsolidated soil that has been eroded, reshaped by water, and redeposited in a non-marine setting, and is made up of a variety of materials. ) The lowermost horizon is fresh parent material, granitic. You are asked to discuss the clay mineral distributions: soil a--right away, we notice that the smectite concentration is deep down in b horizon, and kaolinite increases going down the profile. There is also increasing illite from b horizon downwards. However, these trends are pretty detrital and fluctuate. This means that clay forming genesis is not very significant. The concentration of illite in the lowermost horizon is exactly the same, and it is fairly uniform.
