Hitaga Sand Ridge Prairie - Big Rock
The walk will be about 0.4 miles be on the lookout for an interesting big rock!
There are three main types of rocks: 1.Metamorphic Rock 2.Igneous Rock 3.Sedimentary Rocks
Metamorphic Rock
This is a result of a transformation of a pre-existing rock. The original rock is subjected to very high heat and pressure, which cause obvious physical and/or chemical changes. There are two basic types of metamorphic rocks. Foliated metamorphic rocks such as gneiss, phyllite, schist, and slate have a layered or banded appearance that is produced by exposure to heat and directed pressure. Non-foliated metamorphic rocks such as hornfels, marble, quartzite, and novaculite do not have a layered or banded appearance.
Igneous Rock
Extrusive igneous rocks cool and solidify quicker than intrusive igneous rocks. They are formed by the cooling of molten magma on the earth's surface. The magma, which is brought to the surface through fissures or volcanic eruptions, solidifies at a faster rate.
Sedimentary Rock
Sedimentary rock is rock that has formed through the deposition and solidification of sediment, especially sediment transported by water (rivers, lakes, and oceans), ice ( glaciers ), and wind. Sedimentary rocks are often deposited in layers, and frequently contain fossils. Note : Limestone and shale are common sedimentary rocks.
To receive credit for this earth cache, email to me the answers to the following questions:
1. What type of rock is the Hitaga Big Rock, and is it Igneous, Sedimentary or Metamorphic?
2. What is the height and width of this rock?
3. Go examine the rock up close and describe its color, texture. How does this rock feel? Do any parts feel different than others? Why do or don't they?
4. Based on the descriptions above, is the rock Fine, Medium or coarse grained?
5. **Optional** Take a picture of yourself at the rock.