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When were precambrian rocks formed?

During the precambrian.


Why is it difficult to study Precambrian time?

Studying the Precambrian time is challenging due to a lack of well-preserved rocks, limited fossil records, and the immense timescale involved (4.6 billion to 541 million years ago). Additionally, geological processes have altered many Precambrian rocks over time, making it hard to interpret their original characteristics accurately.


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.


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 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.


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.


What is a Precambrian's shield?

How are mafic and felsic igneous rocks different


What is the Difference between Precambrian rocks and Paleozoic rocks?

Precambrian rocks are older than Paleozoic rocks, dating back to about 4.6 billion to 541 million years ago, while Paleozoic rocks were formed from 541 to 252 million years ago. Precambrian rocks lack fossils, while Paleozoic rocks contain abundant fossil evidence of early marine life. Additionally, Paleozoic rocks mark the beginning of complex life forms, whereas Precambrian rocks mainly consist of simpler organisms.


Where do most of our history of precambrian rocks come from?

Most of our knowledge of Precambrian rocks comes from studying exposed rock outcrops on the Earth's surface, as well as from drilling deep boreholes and mining operations. Additionally, information about Precambrian rocks can be gleaned from geophysical surveys and satellite imagery.


Example of summary?

Precambrian rocks have been so deeply buried that they have changed by heat and pressure. That's a summary about the Precambrian time.


What are 2 reasons why it is difficult for scientist to study Precambrian rocks?

Precambrian rocks are often heavily metamorphosed, making it challenging to determine their original composition and age accurately. The lack of easily recognizable fossils in Precambrian rocks makes it difficult to establish a timeline of events and understand the evolution of life during that time.


The Precambrian rocks of South Africa are a famous mining area for?

gold