Geologic Eras
The oldest geologic era
Precambrian
This occurs when tectonic plates move apart
Volcanoes
We live in this region
Great Lakes-St. Lawrence Lowlands
Name the three types of rock
Igneous, Sedimentary, Metamorphic
This mountain range can be found in both North America and Northern Europe.
Appalachians
Dinosaurs reigned supreme in this era
Mesozoic
This occurs when tectonic plates press against each other
Mountains
This landform region is the furthest west in Canada.
Western Cordillera
Intrusive igneous rocks form this way.
Magma cools slowly deep inside Earth.
This supercontinent broke up into 20 plates 300 million years ago
Pangaea
The age of the earth
4.6 billion years old
This occurs when tectonic plates rub against each other
Earthquakes
This region was formed primarily during the Precambrian era
Canadian Shield
Name the five steps in the formation of sedimentary rocks
Weathering, Erosion, Deposition, Compaction, Cementation (lithified).
Humans have been on Earth for this length of time.
200,000 years
We live in this era
Cenozoic
These two tectonic plates run through Iceland
North American Plate and Eurasian Plate
Name Canada's three Highland regions
Western Cordillera, Innuitian Mountains, Applachians
Marble and Quartz are this type of rock
Metamorphic
He proved the existence of Pangaea
Dr. Alfred Wegener
This era began 230 million years ago
Paleozoic
This aquatic organism helps maintain the earth's temperature
Plankton
This region was once covered by inland seas, leaving behind fertile sediment
Interior Plains
Gold, silver, and other minerals can be found in this type of rock
Metamorphic
The Rocky Mountains formed in this geologic era
Cenozoic