Geologic Time
The largest division of geologic time
What is Eons?
Certain features that some organisms have that make them more likely to become fossils?
What are hard parts like shells, bones and teeth?
The main rock type formed from the compaction and cementation of sediments
What is sedimentary rock?
The process that causes tectonic plates to move (also water to boil).
What is convection?
What is Carbon Dioxide (CO2)?
The division of geologic time we will focus on in this class
What is a period?
The common feature that most depositional environments that create fossils have.
What is water?
The main rock type formed from cooling magma and lava
What is Igneous Rock?
The type of plate boundary when two plates move apart.
What is divergent plate boundary?
What is photosynthesis?
When 75% or more of all life disappears within a relatively short amount of geologic time
What is a mass extinction?
An example of a depositional environment likely to leave fossils.
Ocean, Lakes, Rivers, Beaches, Deltas, Swamps
The specific rock that indicates past warm shallow seas
What is limestone?
The main features found at convergent plate boundaries include...
What are earthquakes and volcanoes?
The process that puts carbon into the atmosphere before humans starting burning fossil fuels.
What is volcanic outgassing?
The second largest division of geologic time
What is an era?
The types of organisms that are over represented in the fossil record.
The specific rock type that indicates past volcanic eruptions.
What is basalt?
The two types of tectonic plates
Increased chemical weathering would cause what to happen to the climate?
What is an ice age? or cooler climate
How do geologist know when one period of geologic time ends and another begins?
Fossil evidence shifts. Some fossils disappear and new ones show up.
Name any type of fossil
Casts, Mold, Amber, Trace, Petrified
The specific rock that indicates past anoxic environments
What is shale?
The theory of plate tectonics is supported by many pieces of evidence including...(looking for 5 things)
Location of volcanoes, earthquakes, trenches and mountain chains. The age of the seafloor and fossil distribution.
What is ocean acidification?