Rock Cycle Terminology
What is Sediment?
As lava carves out the surface of the land, what type of rock will it form as it cools?
What is Igneous?
Weathering and Erosion
Sediments
The term "fossil" means
What is the preserved remains of past life on Earth?
The actual age of a fossil
Absolute age dating/absolute dating
When sediments are placed under pressure because of the weight of overlying layers.
Compaction
What type of rock are the most fossils typically found.
What is sedimentary rock?
Another name for magma/lava
molten rock
Give me a simple explanation for the Law of Superposition.
The older fossils are at the bottom layer and the younger fossils are at the top layer.
Intrusions occur when ______________ cools beneath the surface.
magma
When the particles of sediment begin to stick to each other and holds the particles/grains tightly together
Cementation
Heat and Pressure
Metamorphic rock
All types of rocks can do this to turn into magma/lava.
Melt
An index fossil represents a species that lived for how long
A short amount of time.
Comparing rock layers without a date
relative age dating/relative dating
The process by which rock particles are worn away and moved elsewhere by gravity, or by wind, water or ice.
How is sedimentary rock formed?
Deposition, compaction, and cementation
Paleontologist
Identify the index fossil
A
What is the law of cross cutting?
When one rock layer cuts across other rock layers
The laying down of sediment carried by wind, water, or ice
deposition
Why are most fossils found in sedimentary rocks?
Very low heat and pressure
An intrusion is always ___________ than the rock layers around it.
younger
If rocks in a region are found to have fossilized fins, what does this indicate about the past of the region?
The area was once covered with water.
A system of chronological measurement that describes the timing and relationships between events that have occurred throughout Earth's history.
Geological Time Scale