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Iron
It's rocks are severely bent and folded.
The Precambrian time period is segmented into very few parts because the fossil record is scarce.
most rock form that era are deeply buried.
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.
Iron
It's rocks are severely bent and folded.
are severely bent and folded
It's rocks are severely bent and folded.
The word Precambrian describes the approximate age of the rock, it could be sedimentary, igneous or metamorphic and there are many ways in which these 3 types of rock could form.
Precambrian
Precambrian time.
Yes, although the fossil record for the precambrian period is scarce. See related link.
The Precambrian time period is segmented into very few parts because the fossil record is scarce.
geologic time scale
correlation between rock units is impossible
The ediacaran fauna lived during Precambrian time and became extinct then, too. Nobody knows for sure why, but trilobites might have caused their disappearance.