Field/Lab Assignment: Part 2

1. Two weathering processes:
MECHANICAL WEATHERING
The picture above is an example of mechanical weathering. Mechanical weathering is a process where
there is no chemical change. For example, a rock broken into many pieces is still a rock. There is no
chemical change to it. Pressure built up and caused the rock to break in the picture above and it slid up
on itself in various areas shown. This picture was taken up a trail in Stanislaus.

2. CHEMICAL WEATHERING
This is an example of chemical weathering. Chemical weathering is the process in which the
composition of the rock changes. In the picture shown above, acid rain has disintegrated the brick wall.

3. Examples of mass wasting and erosional events:
EROSION
The picture above is an example of erosional events. Erosion is the incorporation and transportation of
matierals by wind, water, or ice. In the picture, wind and water have created little caves in the rocks.
This place is called the Russian Gulch.

4. GLACIAL EROSION
This is Half Dome at Yosemite. This is an example of glacial erosion.

5. MASS WASTING
I'm not too sure if this is mass wasting. This picture was taken at Point Loma in San Diego, CA. It
looks like downhill creeps to me? But nonetheless, it looks pretty awesome.

6. Sedimentary environments:
CONTINENTAL
I used these dunes in Yuma, AZ as an example of the continental environment. I believe these dunes
were made by a process called Aeolian. Aeolian processes involve the wind and it's ability to reshape
Earth's surface.

7. TRANSITIONAL
These are examples of transitional environments, particularly the beach environments. These pictures
were taken at Capitola beach and Santa Cruz. The transitional environment pertaining to beaches
involves the shoreline and loose particles like sand, gravel, rocks, etc.

8. MARINE
Pictured above is a reef. This is an example of the marine sedimentary evironment. It is by far my most
favorite environment.

9. Practical Use Of Geology In My Area:
MONTECELLO DAM – LAKE BERRYESSA
This is a dam in Napa, CA, about an hour from my house.

10. SAN MATEO BRIDGE
This is a panaromic view of the San Mateo bridge, which is about 10 minutes away from my house.
This bridge is the 25th longest in the world in length and the longest in San Francisco itself. Bedrock
forms the base for the bridge and helps support the bridge itself.

11. FAULT
Here is a picture of the Hayward Fault. This was taken on a tour of it; it's about ten minutes from my
house. Cracks in the street are shown and the sidewalk is offset in some places that was caused by a
fault creep. The Hayward Fault is a strike-slip fault. Grinding causes pressure to build up and land on
each side will shift and cause a shake and crack in the ground.

12. This is just something extra I thought was interesting. City hall has this swivel-cushion technology on
top of the columns that hold up the building that will help prevent it from collapsing during an
earthquake. It has the ability to withstand a 7.5 magnitude earthquake on the Richter scale. I've never
seen technology like this and I thought I'd show you guys!