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زمینشناسی و معدن::
سنگ بستر
Some outcrops-sites where bedrock is exposed at
The bedrock geology of the Michigan Basin The youngest rocks are centrally located, whereas the oldest beds flank this structure.
The East Kaibab Monocline, Arizona This monocline consists of bent sedimentary beds that were deformed by faulting in the bedrock below.
In many situations, most of the bedrock is concealed by vegeta- tion or buried by recent sedimentation.
Consequently, reconstruction must be done using data gathered from a limited number of outcrops of exposed bedrock.
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