Igneous Rocks
This type of igneous rock forms inside the Earth's surface and contains large crystals.
What is an intrusive igneous rock?
These broad types of volcanoes are found at active plate tectonic boundaries.
What is an interplate volcano?
These are particles derived from the weathering and erosion of pre-existing rocks.
What is a sediment?
This process breaks intact rock into unconnected sediments.
What is physical weathering?
This rock texture has too small of minerals to see with the naked eye.
What is aphanitic?
This is the measure of a fluid's resistance to flow.
What is viscosity?
This process is the development of layering with sedimentary rocks.
What is stratification?
This soil horizon is where humus mixes with sediments.
What is topsoil?
These are formed when magma intrudes between
sedimentary rock layers and solidifies. They are horizontal intrusions parallel to the existing rock layers.
What is a sill?
These volcanic hazards are volcanic mudflows or debris
flows, forming from rapidly melting snow or glaciers.
What are lahars?
This type of sedimentary rock is formed by processes without physical weathering and erosion.
What are chemical sedimentary rocks?
This process is a chemical weathering where water reacts with minerals to break them down and form other minerals.
What is hydrolysis?
This process happens when only a portion of a rock undergoes melting while the rest remains solid, creating magma with a unique composition.
What is partial melting?
This volcano type are small with steep sides. Their eruptions are usually short-lived events.
What is a cinder cone volcano?
Sediment grain size is graded from large to small on this scale.
What is the Wentworth scale?
This historical event was a period of severe dust storms and soil erosion that caused great damage to ecology and agriculture?
What is the Dust Bowl?
This igneous rock has a composition of felsic and a texture of phaneritic.
What is granite?
These volcano eruptions are the largest and lowest viscosity eruption known and are unobserved in modern times.
What are flood basalts?
This sedimentary rock is composed of loosely-cemented shells and shell fragments.
What is coquina?
This is the term we use for roots preserved in the rock record.
What is rhizolith?