Stages of Weathering

13 terms by beartay14 

Create a new folder

Advertisement Upgrade to remove ads

Bedrock

hard, unweathered rock of the planet

Regolith

The first stage of weathering bedrock is to produce a layer of rock chips, pebbles, and fragments

Humus

a dark material composed of decaying organic matter

Parent Rock

The original rock that was weathered

Transported Soil

Sometimes soil is not related to the rock it sits on or to a nearby rock

Residual Soil

stays put on top of its parent rock
This soil often develops distinct layers called horizons

Horizon A- Topsoil

Water leaches minerals form here

Horizon B- Subsoil

Contains minerals leached from the topsoil of Horizon A. Contains clay and perhaps some hummus. May contain the minerals remaining after water has evaporated.

Horizon C- Partly Weathered Bedrock

This is in the first stages of chemical and mechanical weathering. Continued weathering will turn into Horizon B or even Horizon A material. Transported soil is an undifferentiated mix of material and has no horizon.

Laterites

In tropical climates, the heavy rains cause rapid chemical weathering.

Pedalfer

Rains about 25 inches per year. Contains clay, quartz, and iron. Found in states east of the Mississippi River and in the Gulf Cast states.

Pedocal

Rains about 25 inches per year. Contain calcium carbonate which combines with excess hydrogen to make soil less acidic. Found in states west of the Mississippi Rive. A very fertile soil

Topography

lay of the land, is a factor in soil development

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions above and try again

Example:

Reload the page to try again!

Reload

Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

NEW! Voice Recording

Create Set