Field Lab Assignment Field Lab Assignment Part 1Part 1

By: Mariah KramerBy: Mariah Kramer

Example #1Example #1 Scoria is a type of Scoria is a type of

Igneous Rock. It is a Igneous Rock. It is a dark colored rock that dark colored rock that has vesicles, these has vesicles, these vesicles are formed vesicles are formed because of trapped gas because of trapped gas within the melt at the within the melt at the time of solidification. time of solidification. This rock forms as a This rock forms as a frothy crust on the top frothy crust on the top of lava flow or as of lava flow or as material ejected from a material ejected from a volcanic vent and volcanic vent and solidifying while solidifying while airborne.airborne.

Example #2Example #2 Sandstone is a type of Sandstone is a type of

sedimentary rock. It is sedimentary rock. It is mostly made up of sand-mostly made up of sand-size minerals. It is found size minerals. It is found in environments where in environments where large amounts of sand large amounts of sand can accumulate. For can accumulate. For example beaches, example beaches, deserts, and flood plains.deserts, and flood plains.

Example #3Example #3 Phyllite is a Phyllite is a

metamorphic rock. It metamorphic rock. It is made up of five-is made up of five-grained mica. The grained mica. The surface is sometimes surface is sometimes wrinkled and usually wrinkled and usually lustrous. It is usually lustrous. It is usually black, gray, or light black, gray, or light greenish gray color. greenish gray color. It is found in It is found in northwest Arran.northwest Arran.

Example #4Example #4 Hornfels is a metamorphic Hornfels is a metamorphic

rock.rock. It is fine-grained It is fine-grained that is made up of quarts, that is made up of quarts, feldspar, mica, and other feldspar, mica, and other minerals. The action of minerals. The action of intrusive rock upon intrusive rock upon sedimentary rock is how sedimentary rock is how this rock is formed.this rock is formed.

Example #5Example #5 Quartzite is a Quartzite is a

metamorphic rock. It is metamorphic rock. It is produced by the produced by the metamorphism of metamorphism of sandstone and made sandstone and made up of quartz. This rock up of quartz. This rock can actually be used to can actually be used to decorate things such as decorate things such as roofing tiles, flooring roofing tiles, flooring and stair steps.and stair steps.