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What are 2 reasons why it is difficult for scientist to study Precambrian rocks?
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∙ 11y ago
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Wiki User
∙ 11y ago
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Why is the shield also referred to as the Precambrian Shield?
Because it was created in the precambrian era...The Candadian Shield was formed in the Precambrian Era.The rocks of the Canadian Shield formed during the Precambrian time.
Are precambrian rocks common?
No. Precambrian rocks are exceptionally rare. That period ended 570 million years ago, and the oldest rocks on the surface of the Earth are in the Laurentian Range, which runs from Southern Quebec down into Texas and Mexico.
What is the Difference between Precambrian rocks and Paleozoic rocks?
Paleozoic rocks contain fossils while Precambarian rocks had no fossils since at that time there was only single celled organisms.
Precambrian metamorphic rocks exposed at surface of?
...at places in continental interiors termed shields.
Some continents contain large core areas of Precambrian rocks called?
It is called a continental shield.
What do scientist use to study Precambrian time?
Ore from eroded and deformed rocks
One reason the Precambrian rock record is difficult to interpret is because its rocks?
It's rocks are severely bent and folded.
Why is it difficult to interpret the rock record of precambrian time?
It's rocks are severely bent and folded.
When were precambrian rocks formed?
During the precambrian.
One reason the Precambrian rock record has been difficult to interpret is that it's rocks?
are severely bent and folded
One reason fossils are rarely found in Precambrian rocks is that?
Precambrian rocks contain relatively fewer fossils than rocks from different eras. This may be due to the fact that the rocks from this era were subject to a lot of heat and pressure, or were exposed to erosion.
Why is it difficult to divide precambrian time into smaller time units?
The Precambrian interval of earth history is difficult to study because of its tremendous age. Many of the original rocks have been destroyed by weathering and erosion, or have been greatly altered by heat & pressure during burial, a process known as metamorphism.
Why is the shield also referred to as the Precambrian Shield?
Because it was created in the precambrian era...The Candadian Shield was formed in the Precambrian Era.The rocks of the Canadian Shield formed during the Precambrian time.
What are two characteristics of precambrian rocks?
Nickel and Iron
Why is the Canadian Shield also referred as the Precambrian Shield?
Because it was created in the precambrian era...The Candadian Shield was formed in the Precambrian Era.The rocks of the Canadian Shield formed during the Precambrian time.
Why is the Canadian Shield also referred to as the Precambrian Shield?
Because it was created in the precambrian era...The Candadian Shield was formed in the Precambrian Era.The rocks of the Canadian Shield formed during the Precambrian time.
Are precambrian rocks common?
No. Precambrian rocks are exceptionally rare. That period ended 570 million years ago, and the oldest rocks on the surface of the Earth are in the Laurentian Range, which runs from Southern Quebec down into Texas and Mexico.
