Which?
Which is where rock move up because of tectonic plates?
uplift
How many different types of rocks can fossils be found in? (greater than ?)
3
What is an index fossil?
A common fossil found in many areas, and easily recognized
Which is the principle that states that the oldest rock layers are on the bottom, super position, crosscutting, or inclusions?
superposition
What is the Principle of Baked contacts?
An igneous rock intrusion “bakes” surrounding rocks. The rock that is baked is older than the intrusion.
Which types of living things can fossils be made/come from?
Answer-plants,bones, etc.
How do you use correlation?
By matching up the same type of fossils to find the age of others
What do you call the opposite of a cast?
Mold
Which principle states that if one geological feature cuts across another, what has been cut is older-intrusions and faults?
crosscutting
What is the Principle of original horizontality?
This states that sedimentary rock layers are formed in relatively flat layers. Folding or tilting of layers occurs after the rock layers form.
Which is the definition for sedimentary rock?
These are Forms as layers of eroded materials are deposited in layers. Only rock type that contains
How did dinosaurs possibly go extinct? (2 possible answers)
steroids, acid rain, etc.
What is the percent of earth’s species that were going extinct in the Triassic Period?
95%
Which Principle says that if an igneous rock intrusion contains xenoliths, the rock fragments are older?
Inclusions
What principle says that sedimentary rocks are deposited in large continuous sheets?
original continuity
Which is lava that has reached the crust's surface, flowed out over the land, and then hardened into a new rock layer?
extrusion
How do you know what unconformity is?
It is buried erosional surface, separating two rock masses or strata of different ages.
What do you call the the processes that can now work and in the same way that they always have?
uniformitarianism
Which is the youngest layer?
The layer on the top.
What do you call matching up existing rock layers and connecting them to make a model of the layers that you cannot see?
Superposition
Which kind of rock is the rock that Forms when an existing rock is changed into a new form. Can happen due to extreme heat, pressure or both?
Metamorphic Rock
How do you explain igneous rocks?
rocks that are formed by magma.
What is Xenolith?
A rock that is inside a larger rock as it turns into a solid.
Which means layers of rock?
strata
What is intrusion?
Magma that melts its way up through part of the crust but hardens before it ever reaches the surface.