Enviro Notes

Earth Quakes, Feb 19

• Vibrations caused by rapid release of energy.

Fault

Cracks between big enough rocks cause change. When the movement at the fault is large this increases a earthquake. The fault scarp can be seen in real life (•‿•). There are different types of faults, if it go up its reverse, if it go down its a regular fault, if it goes up its a thrust fault. Normal faults are caused by extention.

Soil and Ground, March 4

Gravel >2mm, Snad 2-1/16mm, Silt 1/16-256mm, Clay >1/256mm.

Soil is More than Dirt!

Its minerals and decyed organic matter. Soil is the interface between Earth Subsystems. Soil is the bridge between the animate and inanmiate world. It also evolves over time. "The Critical Zone"

Weathering

The process that produces material for sediments and sedimentary rocks. All three rock types are subject to weathering. Two types of weathering, Mechanical and Chemical. Climate also affects the weathering type, humid=chemical, mechanical=cold.

土壌形成の要因

• O-horizon-organic
• A-horizon-mainly mineral, but humas important
• E-horizon-浸食、浸出
。
• B-horizon-subsoil
• C-horizon- 風化した親鉱物

Mass Wasting and Mass Movemnt, March 6

Erodierende Klippen, unterirdischer Erdrutsch, Steinschlag. Massenverschwendung ist die Abwärtsbewegung von Regolith und Gesteinsmassen unter der Anziehungskraft der Schwerkraft.

When a large object, like your mom, has downhill gravity and uphill friction it don't move. If da gravy is strong enough it make the object move downs. Shear stress is causd by downslope, and normal streess is the perpendicular componet of the totoal stress.

Role Of Vegetation

Th roots prevent the movement it helpes reduce landslides, wild fires precent. Shaking from earthquakes casue the sliding of rocks.