Exam 2: Formation of Soils From Parent Materials

In which of the following horizons has the process of illuviation most likely occurred? 14

Hydrolysis involves the splitting of water into its H⁺ and OH^- components while hydration attaches intact water molecules to a compound.

Iron and aluminum oxides are major components of igneous rocks.

Alluvial parent materials are those that have been laid down in former lake bottoms.

Climate influences not only the rate of weathering but the type of native vegetation dominant in an area.

The mixed angular gravel, rock, and soil found at the foot of a slope is typical of what type of parent material?

Which of the following is not a secondary mineral?

The transformation of gneiss into mica, quartz, and feldspar crystals is an example of:

Chemical weathering is accelerated by water, oxygen, and organic and inorganic acids moving down through the regolith.

The presence of rocks such as shale and sandstone indicate the existence of _______.

Residual parent materials have generally been subjected to weathering for a longer period of time than have lacustrine or alluvial parent materials.

Igneous rocks are formed when molten magma cools and solidifies.