1. Enrique Lomeli
Geology 1
12/3/2010
Field Lab part one!!
1. My first rock sample that I collected was a metamorphic rock I
identified as Gneiss. I picked this rock up in the Avocado Lake, in
Sanger California. I found this rock interesting because when I
picked it up I could feel its medium-to coarse grained texture. I
indeed concluded that this was a gneiss rock after I did some
research because it has an abundance of quartz and feldspar
minerals.

2. 2. My second sample is another metamorphic rock that I found in
San Miguel, California. This rock is considered to be slate and has
a very smooth texture. I believe that this rock also contains mica
and quartz minerals which is one of main the reasons that it has a
smooth surface. This rock is also widely used for the construction
of many hose roofs and many other construction projects as well.

3. 3. My third rock sample is granite rock, which comes from the
igneous rock family. I found in a creek called Bear Creek, near the
Merced River, in Fresno County. The feldspars on this rock give it
most of its color which to me kind of looks like it is made up of
salt and pepper. This rock is coarse grained to very coarse grained
and like slate, it too is used for many construction projects.

4. 4. My fourth rock sample is a sedimentary rock, which is Limestone. I
found this rock near Avocado Lake in Sanger, Ca as well and many
other different types of sedimentary and igneous rocks can be
seen there too. This rock is mainly composed of mostly calcite
minerals and the majority of limestone rocks are believed to have
formed under water.

5. 5. My final rock sample that I collected is another sedimentary rock
called Sandstone. I found this particular rock in Parkifield,

6. California near the San Andreas Fault while working on the second
part of this lab. It was definitely interesting to see how this area
has lots of interesting and different types of rocks. This piece of
sandstone is mainly composed of quartz, has a rough texture like
granite, and has a light color.