Wind carrying sand grains deposits the sand when the wind slows down or hits an obstacle.
Weatherman and scientist (The kind of scientist who studies weather).
the supercontinent pangaea
Both epochs and eras are divisions of geological time
The largest of the time divisions are Super-Eons.
Super-Eons are sub divided into Eons.
Eons are sub divided into Eras.
Eras are sub divided into Periods
Periods are sub divided into Epochs
Epochs are sub divided into Ages.
Form from many older rock particles.
Atmosphere is the transparent gaseous envelope that surrounds the earth. Other than earth there are two more planets that possess atmosphere Venus and Mars.
Geologic time scale
temperature humidity and pressure
The folding or tilting of rocks, followed by renewed deposition, has to occur to create an angular unconformity.
Carbon 14 is the isotope of carbon measured in radiocarbon dating.
Argon is a gas that may leak from a sample and provide inaccurate data
Hot and sunny. ;)
heated during metamorphism
A 60,000 year old mammoth bone.
The boundaries of history of eras are marked by great worldwide changes in continental coastline
The side downwind of the prevailing wind direction.