Exam 12: Weathering and Soil

At the surface of the Earth,ultramafic rocks in kimberlite pipes weather away leaving behind concentrations of _____.

In tropical regions where temperatures are high and rainfall abundant,highly leached soils called _______ (oxisols)form.

The solution of calcite in a limestone supplies substantial amounts of ______ to ground water.

Which of the following landforms are created from unloading?

Oxygen is abundant in the atmosphere but it does not combine with minerals of the Earth's crust.

Water that has trickled down into a joint in a rock can freeze,expand,and _____.

Transportation is the picking up or physical removal of rock particles by an agent such as running water or glaciers.

Expanding ice in soil pushes large boulders down into the ground.

Chemical weathering generally proceeds __.

_______ refers to the group of destructive processes that change the physical and chemical character of rocks at the Earth's surface.

Clay minerals help hold water and clay nutrients in soil.

The most important natural source for the formation of acid for rock weathering at the Earth's surface is dissolved _______.

___ is the picking up and physical removal of rock particles by an agent such as wind,flowing liquid water,or glaciers.

The removal of a great weight of rock above a batholith by erosion allows the granite to expand forming ______.

Ferromagnesian minerals such as pyroxene,amphibole,biotite,and olivine are chemically altered in the presence of _____.

A ___ soil is one that develops from the bedrock directly beneath it.

What,in terms of Earth systems,forms an essential interface between the geosphere,biosphere,hydrosphere,and atmosphere?

______ is weathered unconsolidated material on top of solid bedrock.

A soil formed entirely through the weathering of basalt would not contain sand-sized grains of __.

_______ is a byproduct of rock weathering.