Glacial Lakes

Glacial Lakes are created by melted glaciers. The glaciers would move and shift its way down to where it would ultimately become a lake. As it progressed down the hills, it would leave craters and markings, which is how Geologist can tell the glaciers moved from one spot to another. The Glaciers would essentially erode itself away as it moved. 

I love how reflective the water is. This is Lake McDonald in Montana, USA.

The Great Lakes are the largest Glacial Lakes in the World

Rock Identification - Obsidian

Obsidian is an extrusive igneous rock. They get their black glassy texture by rapid cooling of silica-rich lava.Its composition is extremely felsic. Its major minerals include feldspar, quartz, and mica. Today, Obsidian can be used in making surgical scalpels. Obsidian is also used as jewelry of course. Since it can scratch easily and is likely to chip upon impact, it is mostly used for earrings, brooches, and pendants. its hardness is set at 5.5. Obsidian is most commonly found is the United States, Mexico, Canada, Argentina, Kenya, Italy, Greece, and Iceland.  

Lab #3

Here are some minerals that we looked over in class.

Amethyst

Calcite

Obsidian

Quartz

Galena

Mica

Maps

Chorpleth Map

Dot Density Map

Isarithmic Map

Proportional Symbol Map

Our Mean Annual Precipitation in Georgia

Stone Mountain Park

So during the summer break I loved going to Stone Mountain Park to run up the mountain. It is a steep mountain, but rewarding experience. This is the route I would drive to get to Stone Mountain Park. Which would only take me like 20 mins.

Stone Mountain is made up of quartz monzonite, granite and granodiorite, which are all closely related Igneous rocks.