POP! Goes the Volcano
This type of volcano has broad shallow sloped sides and is known for it's beautiful lava flows.
Shield
The first wave of an earthquake that is recorded.
P-wave (Primary)
What is the first eon in Geologic Time?
Hadean Eon
This molten rock is located under the surface
Magma
This principle states that within a sequence of rock layers, the oldest layer is at the base and the layers above are progressively younger with ascending order in the sequence.
Principle of Superposition
The deadliest volcanic hazard.
Pyroclastic Flows
This fault occurs when the hanging wall moves up relative to the footwall.
Reverse/Thrust Fault
This era is known as the "Age of Dinosaurs".
Mesozoic Era
Granite has this composition
Felsic
The amount of time it takes for half of the parent isotope to decay to the daughter isotope
Half life
A mafic rock signifies this type of eruption style.
Effusive
Today, scientists use this scale to accurately measure earthquakes.
Moment Magnitude
The smallest unit of time in the Geologic Time Scale.
Ages
This Earthquake wave cannot travel through liquids.
S-wave
The percent of daughter atoms remaining when there are 25% parent atoms measured within the mineral.
75% daughter atoms
The three components of magma.
Melt, Crystals, Volatiles
This hazard makes saturated sediment to lose its strength when ground shaking occurs.
Sediment Liquefaction
This eon covers the majority of time within the Geologic Time Scale, roughly 2 Ma.
Proterozoic Eon
This era is known as the "Age of Mammals"
Cenozoic
The age of a mineral that has a measured half life of 1000 yrs and 2 half lives has passed
2000 yrs
The definition of viscosity.
A substances resistance to flow.
This stress creates folds, anticlines and synclines.
Compressional Stress
Our current period and epoch in Geologic Time.
Quaternary and Holocene
This process causes the formation of magma that create volcanic arcs.
Partial melting of the subducting slab
This radiometric dating technique only works on recent organic material.
Carbon 14 Dating